CA 2022 California Energy Code Approved Express Terms COMPLETE
$48.75
California Energy Code Approved Express Terms
| Published By | Publication Date | Number of Pages |
| CA | 2022 | 648 |
None
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | 2022 P1 (1) ADMINISTRATIVE REGULATIONS CALIFORNIA CODE OF REGULATIONS TITLE 24, PART 1 |
| 4 | ARTICLE 1 – ENERGY BUILDING REGULATIONS 10-101 – SCOPE 10-102 – DEFINITIONS |
| 8 | 10-103 – PERMIT, CERTIFICATE, INFORMATIONAL, AND ENFORCEMENT REQUIREMENTS FOR DESIGNERS, INSTALLERS, BUILDERS, MANUFACTURERS, AND SUPPLIERS |
| 18 | 10-103.1 – NONRESIDENTIAL LIGHTING CONTROLS ACCEPTANCE TEST TRAINING AND CERTIFICATION |
| 24 | 10-103.2 – NONRESIDENTIAL MECHANICAL ACCEPTANCE TEST TRAINING AND CERTIFICATION |
| 30 | 10-104 – EXCEPTIONAL DESIGNS |
| 31 | 10-105 – ENFORCEMENT BY THE COMMISSION |
| 32 | 10-106 – LOCALLY ADOPTED ENERGY STANDARDS |
| 33 | 10-107 – INTERPRETATIONS |
| 34 | 10-108 – EXEMPTION |
| 35 | 10-109 – COMPLIANCE SOFTWARE, ALTERNATIVE COMPONENT PACKAGES, EXCEPTIONAL METHODS, DATA REGISTRIES AND RELATED EXTERNAL DIGITAL DATA SOURCES, ALTERNATIVE RESIDENTIAL FIELD VERIFICATION PROTOCOLS, ELECTRONIC DOCUMENT REPOSITORIES, AND PHOTOVOLTAIC, AND… |
| 38 | 10-110 – PROCEDURES FOR CONSIDERATION OF APPLICATIONS UNDER SECTIONS 10-104, 10-106, 10-108, AND 10-109 |
| 39 | 10-111 – CERTIFICATION AND LABELING OF FENESTRATION PRODUCT AND EXTERIOR DOOR U-FACTORS, SOLAR HEAT GAIN COEFFICIENTS, VISIBLE TRANSMITTANCE AND AIR LEAKAGE |
| 42 | 10-112 – CRITERIA FOR DEFAULT TABLES |
| 43 | 10-113 – RATING AND LABELING OF ROOFING PRODUCT REFLECTANCE AND EMITTANCE |
| 45 | 10-114 – DETERMINATION OF OUTDOOR LIGHTING ZONES AND ADMINISTRATIVE RULES FOR USE |
| 47 | 10-115 – COMMUNITY SHARED SOLAR ELECTRIC GENERATION SYSTEM OR COMMUNITY SHARED BATTERY STORAGE SYSTEM COMPLIANCE OPTION FOR ON-SITE SOLAR ELECTRIC GENERATION OR BATTERY STORAGE REQUIREMENTS |
| 52 | 2022 P6 S100 Building Energy Efficiency Standards CALIFORNIA CODE OF REGULATIONS TITLE 24, PART 6 |
| 53 | SECTION 100.0 – SCOPE |
| 60 | SECTION 100.1 – DEFINITIONS AND RULES OF CONSTRUCTION |
| 107 | SECTION 100.2 – CALCULATION OF TIME DEPENDENT VALUATION (TDV) ENERGY |
| 108 | 2022 P6 S110 SUBCHAPTER 2 ALL OCCUPANCIES—MANDATORY REQUIREMENTS FOR THE MANUFACTURE, CONSTRUCTION AND INSTALLATION OF SYSTEMS, EQUIPMENT AND BUILDING COMPONENTS SECTION 110.0 – SYSTEMS AND EQUIPMENT—GENERAL |
| 110 | SECTION 110.1 – MANDATORY REQUIREMENTS FOR APPLIANCES |
| 111 | SECTION 110.2 – MANDATORY REQUIREMENTS FOR SPACE-CONDITIONING EQUIPMENT |
| 173 | SECTION 110.3 – MANDATORY REQUIREMENTS FOR SERVICE WATER-HEATING SYSTEMS AND EQUIPMENT |
| 175 | SECTION 110.4 – MANDATORY REQUIREMENTS FOR POOL AND SPA SYSTEMS AND EQUIPMENT |
| 176 | SECTION 110.5 – NATURAL GAS CENTRAL FURNACES, COOKING EQUIPMENT, POOL AND SPA HEATERS, AND FIREPLACES: PILOT LIGHTS PROHIBITED |
| 177 | SECTION 110.6 – MANDATORY REQUIREMENTS FOR FENESTRATION PRODUCTS AND EXTERIOR DOORS |
| 181 | SECTION 110.7 – MANDATORY REQUIREMENTS TO LIMIT AIR LEAKAGE |
| 182 | SECTION 110.8 – MANDATORY REQUIREMENTS FOR INSULATION, ROOFING PRODUCTS AND RADIANT BARRIERS |
| 185 | SECTION 110.9 – MANDATORY REQUIREMENTS FOR LIGHTING CONTROLS |
| 188 | SECTION 110.10 – MANDATORY REQUIREMENTS FOR SOLAR READY BUILDINGSREADINESS |
| 191 | SECTION 110.11 – MANDATORY REQUIREMENTS FOR ELECTRICAL POWER DISTRIBUTION SYSTEM |
| 192 | SECTION 110.12 – MANDATORY REQUIREMENTS FOR DEMAND MANAGEMENT |
| 194 | 2022 P6 S120 SUBCHAPTER 3 NONRESIDENTIAL, HIGH-RISE RESIDENTIAL, HOTEL/MOTEL OCCUPANCIES, AND COVERED PROCESSES—MANDATORY REQUIREMENTS SECTION 120.0— GENERAL |
| 195 | SECTION 120.1 – REQUIREMENTS FOR VENTILATION AND INDOOR AIR QUALITY |
| 211 | SECTION 120.2 – REQUIRED CONTROLS FOR SPACE-CONDITIONING SYSTEMS |
| 216 | SECTION 120.3 – REQUIREMENTS FOR PIPE INSULATION |
| 220 | SECTION 120.4 – REQUIREMENTS FOR AIR DISTRIBUTION SYSTEM DUCTS AND PLENUMS |
| 223 | SECTION 120.5 – REQUIRED NONRESIDENTIAL MECHANICAL SYSTEM ACCEPTANCE |
| 225 | SECTION 120.6 – MANDATORY REQUIREMENTS FOR COVERED PROCESSES |
| 240 | SECTION 120.7 – MANDATORY INSULATION REQUIREMENTS |
| 242 | SECTION 120.8 – NONRESIDENTIAL BUILDING COMMISSIONING |
| 245 | SECTION 120.9 – MANDATORY REQUIREMENTS FOR COMMERCIAL BOILERS. |
| 246 | SECTION 120.10 – MANDATORY REQUIREMENTS FOR FANS |
| 247 | 2022 P6 S130 SUBCHAPTER 4 NONRESIDENTIAL, HIGH-RISE RESIDENTIAL, AND HOTEL/MOTEL OCCUPANCIES—MANDATORY REQUIREMENTS FOR LIGHTING SYSTEMS AND EQUIPMENT, AND ELECTRICAL POWER DISTRIBUTION SYSTEMS SECTION 130.0 – LIGHTING SYSTEMS AND EQUIPMENT, AND ELECTRICAL POWER DISTRIBUTION SYSTEMS —GENERAL |
| 250 | SECTION 130.1 – MANDATORY INDOOR LIGHTING CONTROLS |
| 261 | SECTION 130.2 – OUTDOOR LIGHTING CONTROLS AND EQUIPMENT |
| 264 | SECTION 130.3 – SIGN LIGHTING CONTROLS |
| 265 | SECTION 130.4 –LIGHTING CONTROL ACCEPTANCE AND INSTALLATION CERTIFICATE REQUIREMENTS |
| 267 | SECTION 130.5 –ELECTRICAL POWER DISTRIBUTION SYSTEMS |
| 270 | 2022 P6 S140 SUBCHAPTER 5 NONRESIDENTIAL, HIGH-RISE RESIDENTIAL, AND HOTEL/MOTEL OCCUPANCIES—PERFORMANCE AND PRESCRIPTIVE COMPLIANCE APPROACHES FOR ACHIEVING ENERGY EFFICIENCY SECTION 140.0 – PERFORMANCE AND PRESCRIPTIVE COMPLIANCE APPROACHES |
| 271 | SECTION 140.1 – PERFORMANCE APPROACH: ENERGY BUDGETS |
| 272 | SECTION 140.2 – PRESCRIPTIVE APPROACH |
| 273 | SECTION 140.3 – PRESCRIPTIVE REQUIREMENTS FOR BUILDING ENVELOPES |
| 293 | SECTION 140.4 – PRESCRIPTIVE REQUIREMENTS FOR SPACE CONDITIONING SYSTEMS |
| 326 | SECTION 140.5 – PRESCRIPTIVE REQUIREMENTS FOR SERVICE WATER HEATING SYSTEMS |
| 327 | SECTION 140.6 – PRESCRIPTIVE REQUIREMENTS FOR INDOOR LIGHTING |
| 350 | SECTION 140.7 – PRESCRIPTIVE REQUIREMENTS FOR OUTDOOR LIGHTING |
| 356 | SECTION 140.8 – PRESCRIPTIVE REQUIREMENTS FOR SIGNS |
| 358 | SECTION 140.9 – PRESCRIPTIVE REQUIREMENTS FOR COVERED PROCESSES |
| 365 | SECTION 140.10 – PRESCRIPTIVE REQUIREMENTS FOR PHOTOVOLTAIC AND BATTERY STORAGE SYSTEMS |
| 368 | SUBCHAPTER 6 NONRESIDENTIAL, HIGH-RISE RESIDENTIAL, AND HOTEL/MOTEL OCCUPANCIES—ADDITIONS, ALTERATIONS, AND REPAIRS SECTION 141.0 – ADDITIONS, ALTERATIONS, AND REPAIRS TO EXISTING NONRESIDENTIAL, HIGH-RISE RESIDENTIAL, AND HOTEL/MOTEL BUILDINGS, TO EXISTING OUTDOOR LIGHTING, AND TO INTERNALLY AND EXTERNALLY ILLUMINATED SIGNS |
| 383 | SECTION 141.1 – REQUIREMENTS FOR COVERED PROCESSES IN ADDITIONS, ALTERATIONS TO EXISTING NONRESIDENTIAL, HIGH-RISE RESIDENTIAL, AND HOTEL/MOTEL BUILDINGS |
| 386 | 2022 P6 S150 SUBCHAPTER 7 LOW-RISESINGLE-FAMILY RESIDENTIAL BUILDINGS – MANDATORY FEATURES AND DEVICES SECTION 150.0 – MANDATORY FEATURES AND DEVICES |
| 414 | SUBCHAPTER 8 LOW-RISESINGLE-FAMILY RESIDENTIAL BUILDINGS – PERFORMANCE AND PRESCRIPTIVE COMPLIANCE APPROACHES SECTION 150.1 – PERFORMANCE AND PRESCRIPTIVE COMPLIANCE APPROACHES FOR LOW-RISESINGLE-FAMILY RESIDENTIAL BUILDINGS |
| 435 | SUBCHAPTER 9 LOW-RISE SINGLE-FAMILY RESIDENTIAL BUILDINGS – ADDITIONS AND ALTERATIONS TO EXISTING LOW-RISE RESIDENTIAL BUILDINGS SECTION 150.2 – ENERGY EFFICIENCY STANDARDS FOR ADDITIONS AND ALTERATIONS TO EXISTING LOW-RISESINGLE-FAMILY RESIDENTIAL BUILDINGS |
| 450 | 2022 P6 S160 SUBCHAPTER 10 MULTIFAMILY BUILDINGS—MANDATORY REQUIREMENTS Section 160.0 – General |
| 451 | Section 160.1 – Mandatory Requirements for Building Envelopes (a) Ceiling and Roof Insulation. The opaque portions of ceilings and roofs separating conditioned spaces from unconditioned spaces or ambient air shall meet the requirements of Item1 or 2, and 3 below: 1. Attic Roof. Roofs with an attic space shall meet the requirements of A through C below: A. Shall be insulated to achieve an area-weighted average U-factor not exceeding U-0.043 or shall be insulated between wood-framing members with insulation resulting in an installed thermal resistance of R-22 or greater for the insulation alone. For v… B. Attic access doors shall have permanently attached insulation using adhesive or mechanical fasteners. The attic access shall be gasketed to prevent air leakage; and C. When loose-fill insulation is installed, the minimum installed weight per square foot shall conform with the insulation manufacturer’s installed design weight per square foot at the manufacturer’s labeled R-value. 2. Non Attic Roof. Roofs without attic spaces shall meet the applicable requirements of A through C below: A. Metal Building- The area-weighted average U-factor of the roof assembly shall not exceed 0.098. B. Wood Framed and Others- The area-weighted average U-factor of the roof assembly shall not exceed 0.075. C. Insulation Placement- When insulation is installed at the roof, fixed vents or openings to the outdoors or to unconditioned spaces shall not be installed. When the space between the ceiling and the roof is either directly or indirectly conditioned … (b) Wall Insulation. Opaque portions of above grade walls separating conditioned spaces from unconditioned spaces or ambient air shall meet the following applicable requirements: 1. Metal Building- The area-weighted average U-factor of the wall assembly shall not exceed 0.113. 2. Metal Framed- The area-weighted average U-factor of the wall assembly shall not exceed 0.151. 3. Wood Framed and Others- A. Nominal 2×4 inch framing shall have an area-weighted average U-factor of the wall assembly not exceeding 0.102. B. Nominal 2×6 inch framing shall have an area-weighted average U-factor of the wall assembly not exceeding 0.071. C. Other wall assemblies shall have an area-weighted average U-factor of the wall assembly not exceeding 0.102. 4. Light Mass Walls- A 6 inch or greater Hollow Core Concrete Masonry Unit shall have a U-factor not to exceed 0.440. 5. Heavy Mass Walls- An 8 inch or greater Hollow Core Concrete Masonry Unit shall have a U-factor not to exceed 0.690. 6. Spandrel Panels and Curtain Wall- The area-weighted average U-factor of the spandrel panels and curtain wall assembly shall not exceed 0.280. 7. Demising Walls-. The opaque portions of framed demising walls shall meet the requirements of Item A or B below: |
| 452 | A. Wood framed walls shall be insulated to meet a U-factor not greater than 0.099. B. Metal Framed walls shall be insulated to meet a U-factor not greater than 0.151. 8. Bay or Bow Window roofs and floors. Shall be insulated to meet the wall insulation requirements of TABLE 170.2-A. (c) Floor and Soffit Insulation. The opaque portions of floors and soffits that separate conditioned spaces from unconditioned spaces or ambient air shall meet the applicable requirements of Items 1 through 3 below: 1. Raised Mass Floors – Shall have a minimum of 3 inches of lightweight concrete over a metal deck or the area-weighted average U-factor of the floor assembly shall not exceed 0.269. 2. Raised Wood Floor – shall have an overall assembly U-factor not exceeding U-0.037. In a wood framed assembly, compliance with the U-factor may be demonstrated by installing insulation with an R-value of 19 or greater. 3. Other Floors -The area-weighted average U-factor of the floor assembly shall not exceed 0.071. 4. Heated Slab On Grade Floor-A heated slab on grade floor shall be insulated to meet the requirements of Section 110.8(g) A. The foundation walls are insulated to meet the wall insulation minimums as shown in Table170.2-A; and B. A Class I or Class II vapor retarder is placed over the entire floor of the crawlspace; and C. Vents between the crawlspace and outside air are fitted with automatically operated louvers that are temperature actuated; and D. The requirements in Reference Residential Appendix RA4.5.1. (d) Vapor Retarder. (e) Fenestration Products. Fenestration separating conditioned space from unconditioned space or outdoors shall meet the requirements of either Item 1 or 2 below: (f) Installation of Fireplaces, Decorative Gas Appliances and Gas Logs. If a masonry or factory-built fireplace is installed, it shall comply with Section 110.5, Section 4.503 of Part 11, and shall have the following: |
| 454 | Section 160.2 – Mandatory Requirements for Ventilation and Indoor Air Quality (a) General Requirements. 1. Attached dwellings units in multifamily buildings shall comply with the applicable requirements of subsection 160.2(b) below. Occupiable spaces in multifamily buildings other than attached dwelling units shall comply with the applicable requirement… NOTE: Section 160.2 is not applicable to townhouses or dwellings that contain two dwelling units. 2. The required outdoor air-ventilation rate and the air-distribution system design shall be clearly identified on the building design plans submitted to the enforcement agency in accordance with Section 10-103 of Title 24, Part 1. (b) Attached Dwelling Units. Attached dwellings units shall comply with the requirements of subsections 1 and 2 below. 1. Air Filtration. A. System types specified in Subsections i, ii, and iii shall be provided with air filters in accordance with Sections 160.2(b)1B, 160.2(b)1C, and 160.2(b)1D. System types specified in subsection i shall also comply with Section 160.2(b)1E. i. Mechanical space conditioning systems that supply air to an occupiable space through ductwork exceeding 10 ft (3 m) in length. ii. Mechanical supply-only ventilation systems and makeup air systems that provide outside air to an occupiable space. iii. The supply side of mechanical balanced ventilation systems, including heat recovery ventilation systems, and energy recovery ventilation systems that provide outside air to an occupiable space. B. System Design and Installation. i. The system shall be designed to ensure that all recirculated air and all outdoor air supplied to the occupiable space is filtered before passing through any system’s thermal conditioning components. EXCEPTION to 160.2(b)1Bi: For heat recovery ventilators and energy recovery ventilators the location of the filters required by Section 160.2(b)1 may be downstream of a system thermal conditioning component, provided the system is equipped with ancill… ii. All systems shall be designed to accommodate the clean-filter pressure drop imposed by the system air filter(s). The design airflow rate, and maximum allowable clean-filter pressure drop at the design airflow rate applicable to each air filter sha… Systems specified in Section 160.2(b)1Ai shall be equipped with air filters that meet either subsection a or b below: a. Nominal two-inch minimum depth filter(s) shall be sized by the system designer, or b. Nominal one-inch minimum depth filter(s) shall be allowed if the filter(s) are sized according to Equation 160.2-A, based on a maximum face velocity of 150 ft per minute, and according to the maximum allowable clean-filter pressure drop specified i… |
| 455 | iii. All system air filters shall be located and installed in such a manner as to be accessible for regular service by the system owner. iv. All system air filter installation locations shall be labeled to disclose the applicable design airflow rate and the maximum allowable clean-filter pressure drop. The labels shall be permanently affixed to the air filter installation location, rea… C. Air Filter Efficiency. The system shall be provided with air filters having a designated efficiency equal to or greater than MERV 13 when tested in accordance with ASHRAE Standard 52.2, or a particle size efficiency rating equal to or greater than … D. Air Filter Pressure Drop. All systems shall be provided with air filters that conform to the applicable maximum allowable clean-filter pressure drop specified in subsections i, ii, iii, or iv below, when tested using ASHRAE Standard 52.2, or as rat… i. The maximum allowable clean-filter pressure drop shall be determined by the system design for the nominal two-inch minimum depth air filter required by Section 160.2(b)1Biia, or ii. A maximum of 25 PA (0.1 inches water) clean-filter pressure drop shall be allowed for a nominal one-inch depth air filter sized according to Section 160.2(b)1Biib, or iii. For systems specified in 160.2(b)1Aii, and 160.2(b)1Aiii, the maximum allowable clean filter pressure drop shall be determined by the system design. iv. If EXCEPTION 1 to Section 160.3(b)5Lii or iv is utilized for compliance with cooling system airflow rate and fan efficacy requirements, the clean-filter pressure drop for the system air filter shall conform to the requirements given in TABLE 160.3… E. Air Filter Product Labeling. Systems described in 160.2(b)1Ai shall be equipped with air filters that have been labeled by the manufacturer to disclose the efficiency and pressure drop ratings that demonstrate conformance with Sections 160.2(b)1C a… EXCEPTION to 160.2(b)1: Evaporative coolers are exempt from the air filtration requirements in Section 160.2(b)1. 2. Ventilation and Indoor Air Quality for Attached Dwelling Units. All attached dwelling units shall meet the requirements of ASHRAE Standard 62.2, Ventilation and Acceptable Indoor Air Quality in Residential Buildings subject to the amendments specif… A. Amendments to ASHRAE 62.2 Requirements. |
| 456 | iii. Air Filtration. Air filtration shall conform to the specifications in 160.2(b)1. Compliance with ASHRAE 62.2 Sections 6.7 (Minimum Filtration) and 6.7.1 (Filter Pressure Drop) shall not be required. Total Required Ventilation Rate [ASHRAE 62.2:4.1.1]. Qtot = 0.03Afloor + 7.5(Nbr + 1) (Equation 160.2-B) WHERE: Qtot = total required ventilation rate, cfm Afloor = dwelling-unit floor area, ft2 Nbr = number of bedrooms (not to be less than 1) b. All dwelling units in a multifamily building shall use the same whole-dwelling unit ventilation system type. The system type installed throughout the building shall be only one of the following three types: supply, exhaust, or balanced. The dwellin… 1. Balanced Ventilation. A balanced ventilation system shall provide the required whole-dwelling-unit ventilation airflow. Systems with heat recovery or energy recovery that serve a single dwelling unit shall have a fan efficacy of ≤1.0 W/cfm; or 2. Supply or Exhaust Ventilation with Compartmentalization Testing. Continuously operating supply ventilation systems, or continuously operating exhaust ventilation systems shall be allowed to be used to provide the required whole-dwelling unit ventil… |
| 457 | v. Multifamily Building Central Ventilation System Airflow Rate Tolerance. Multifamily building central ventilation systems that serve multiple dwelling units shall have airflow rates in each dwelling unit served that meet or exceed a design ventilati… a. Designers shall specify a design ventilation airflow rate for each dwelling unit that is equal to or greater than the rate specified by Equation 160.2-B. b. The design ventilation airflow rate for each dwelling unit shall be stated on the building design plans approved by the enforcement agency. c. Airflow in each dwelling unit shall be no more than twenty percent greater than the specified design ventilation airflow rate. Ventilation systems shall utilize mechanical or software airflow control means to ensure each of the dwelling-unit airflo… |
| 460 | (c) Common Services Use Areas. All occupiable spaces shall comply with the requirements of subsection 1 and shall also comply with either subsection 2 or subsection 3: 1. Air Filtration 2. Natural Ventilation. Naturally ventilated spaces shall be designed in accordance with 160.2(c)2A through 160.2(c)2C and include a mechanical ventilation system designed in accordance with 160.2(c)3: A. Floor area to be ventilated. Spaces or portions of spaces to be naturally ventilated shall be located within a distance based on the ceiling height, as specified in i, ii and iii. The ceiling height (H) to be used in i, ii or iii shall be the minim… |
| 461 | i. Single Side Opening. For spaces with operable opening on one side of the space, the maximum distance from the operable opening shall be not more than 2H. [ASHRAE 62.1:6.4.1.1] ii. Double Side Opening. For spaces with operable openings on two opposite sides of the space, the maximum distance from the operable opening shall be not more than 5H. [ASHRAE 62.1:6.4.1.2] iii. Corner Opening. For spaces with operable openings on two adjacent sides of a space, the maximum distance from the operable openings shall be not more than 5H along a line drawn between the two openings that are the farthest apart. Floor area outs… B. Location and Size of Openings. Spaces or portions of spaces to be naturally ventilated shall be permanently open to operable wall openings directly to the outdoors. The openable area shall be not less than 4 percent of the net occupiable floor area… C. Control and Accessibility. The means to open the required operable opening shall be readily accessible to building occupants whenever the space is occupied. Controls shall be designed to coordinate operation of the natural and mechanical ventilatio… 3. Mechanical Ventilation. Occupiable spaces shall be ventilated with a mechanical ventilation system capable of providing an outdoor airflow rate (Vz) to the zone no less than the larger of A or B as described below: A. The outdoor airflow rate to the zone (Vz) shall be determined in accordance with Equation 160.2-G; or B. For spaces designed for an expected number of occupants, the outdoor airflow rate to the zone (Vz) shall be determined in accordance with Equation 160.2-H; EXCEPTION to Section 160.2(c)3: Transfer air. The rate of outdoor air required by Section 160.2(c)3 may be provided with air transferred from other ventilated space if: i. Use of transfer air is in accordance with Section 160.2(c)8; and |
| 462 | ii. The outdoor air that is supplied to all spaces combined, is sufficient to meet the requirements of Section 160.2(c)3 for each space individually. 4. Exhaust Ventilation. The design exhaust airflow shall be determined in accordance with the requirements in Table 160.2-C. Exhaust makeup air shall be permitted to be any combination of outdoor air, recirculated air, or transfer air. [ASHRAE 62.1:6…. 5. Operation and Control Requirements for Minimum Quantities of Outdoor Air. A. Times of occupancy. The minimum rate of outdoor air required by Section 160.2(c) shall be supplied to each space at all times when the space is usually occupied. EXCEPTION 1 to Section 160.2(c)5A: Demand control ventilation. In intermittently occupied spaces that do not have processes or operations that generate dusts, fumes, mists, vapors or gasses and are not provided with local exhaust ventilation (such as … EXCEPTION 2 to Section 160.2(c)5A: Temporary reduction. The rate of outdoor air provided to a space may be reduced below the level required by Section 160.2(c) for up to 30 minutes at a time if the average rate for each hour is equal to or greater tha… B. Pre-occupancy. The lesser of the minimum rate of outdoor air required by Section 160.2(c) or three complete air changes shall be supplied to the entire building during the 1-hour period immediately before the building is normally occupied. C. Required Demand Control Ventilation. Demand ventilation controls complying with 160.2(c)5D are required for a space with a design occupant density, or a maximum occupant load factor for egress purposes in the CBC, greater than or equal to 25 people… i. an air economizer; or ii. modulating outside air control; or iii. design outdoor airflow rate > 3,000 cfm. EXCEPTION 1 to Section 160.2(c)5C: Where space exhaust is greater than the design ventilation rate specified in Section 160.2(c)3 minus 0.2 cfm per ft² of conditioned area. EXCEPTION 2 to Section 160.2(c)5C: Spaces that have processes or operations that generate dusts, fumes, mists, vapors, or gases and are not provided with local exhaust ventilation, such as indoor operation of internal combustion engines or areas desig… EXCEPTION 3 to Section 160.2(c)5C: Spaces with an area of less than 150 square feet, or a design occupancy of less than 10 people as specified by Section 160.2(c)3. D. Demand Control Ventilation Devices. i. For each system with demand control ventilation (DCV), CO2 sensors shall be installed in each room that meets the criteria of Section 160.2(c)5C with no less than one sensor per 10,000 ft² of floor space. When a zone or a space is served by more th… ii. CO2 sensors shall be located in the room between 3 ft and 6 ft above the floor or at the anticipated height of the occupants’ heads. iii. Demand ventilation controls shall maintain CO2 concentrations less than or equal to 600 ppm plus the outdoor air CO2 concentration in all rooms with CO2 sensors. |
| 463 | EXCEPTION to Section 160.2(c)5Diii: The outdoor air ventilation rate is not required to be larger than the design outdoor air ventilation rate required by Section 160.2(c)3 regardless of CO2 concentration. iv. Outdoor air CO2 concentration shall be determined by one of the following: a. CO2 concentration shall be assumed to be 400 ppm without any direct measurement; or b. CO2 concentration shall be dynamically measured using a CO2 sensor located within 4 ft of the outdoor air intake. v. When the system is operating during hours of expected occupancy, the controls shall maintain system outdoor air ventilation rates no less than the rate listed in Table 160.2-B for DCV, times the conditioned floor area for spaces with CO2 sensors, p… vi. CO2 sensors shall be certified by the manufacturer to be accurate within plus or minus 75 ppm at a 600 and 1000 ppm concentration when measured at sea level and 25 C, factory calibrated, and certified by the manufacturer to require calibration no … vii. The CO2 sensor(s) reading for each zone shall be displayed continuously, and shall be recorded on systems with digital direct controls (DDC) to the zone level. E. Occupant Sensor Ventilation Control Devices. When occupancy sensor ventilation devices are required by Section 160.3(a)2Diii, occupant Occupant sensors sensing ventilation controls are required for space conditioning zones that are both permitted t… i. i. Occupant sensors shall meet the requirements in Section 110.9(b)4 and shall have suitable coverage and placement to detect occupants in the entire space ventilated. ii. If When occupant sensors controlling lighting are also used for ventilation, the ventilation signal shall be independent of daylighting, manual lighting overrides or manual control of lighting. iii. When a single zone damper or a single zone system serves multiple rooms, there shall be an occupancy occupant sensor in each room and the zone is shall not be considered vacant until all rooms in the zone are vacant. iv. ii. One hour prior to normal scheduled occupancy, the occupancy occupant sensor ventilation control shall allow pre-occupancy purge as described in Section 160.2(c)5B. 6. Ducting for Zonal Heating and Cooling Units. Where a return plenum is used to distribute outdoor air to a zonal heating or cooling unit which then supplies the air to a space in order to meet the requirements of Section 160.2(c)3, the outdoor air s… |
| 464 | A. Within 5 feet of the unit; or B. Within 15 feet of the unit, substantially toward the unit, and at a velocity not less than 500 feet per minute. 7. Design and Control Requirements for Quantities of Outdoor Air. A. All mechanical ventilation and space-conditioning systems shall be designed with and have installed ductwork, dampers, and controls to allow outside air rates to be operated at the minimum levels specified in Section 160.2(c)3 or the rate required … B. All variable air volume mechanical ventilation and space-conditioning systems shall include dynamic controls that maintain measured outside air ventilation rates within 10 percent of the required outside air ventilation rate at both full and reduce… C. Measured outdoor air rates of constant volume mechanical ventilation and space-conditioning systems shall be within 10 percent of the required outside air rate. 8. Air Classification and Recirculation Limitations. Air classification and recirculation limitations of air shall be based on the air classification as listed in Table 160.2-B or Table 160.2-D, in accordance with the following: A. Class 1 Air is air with significant contaminant concentration, significant sensory-irritation intensity, or offensive odor. Recirculation or transfer of Class 1 air to any space shall be permitted; [ASHRAE 62.1:5.16.3.1] B. Class 2 Air is air with moderate contaminant concentration, mild sensory-irritation intensity, or mildly offensive odors (Class 2 air also includes air that is not necessarily harmful or objectionable but that is inappropriate for transfer or recir… i. Recirculation of Class 2 air within the space of origin shall be permitted [ASHRAE 62.1:5.16.3.2.1]: ii. Recirculation or transfer of Class 2 to other Class 2 or Class 3 spaces shall be permitted, provided that the other spaces are used for the same or similar purpose or task and involve the same or similar pollutant sources as the Class 2 space [ASH… iii. Transfer of Class 2 air to toilet rooms [ASHRAE 62.1:5.16.3.2.3]; or iv. Recirculation or transfer of Class 2 air to Class 4 spaces [ASHRAE 62.1:5.16.3.2.4]; or v. Class 2 air shall not be recirculated or transferred to Class 1 spaces. [ASHRAE 62.1:5.16.3.2.5] EXCEPTION to Section 160.2(c)8Bv: When using any energy recovery device, recirculation from leakage, carryover, or transfer from the exhaust side of the energy recovery device is permitted. Recirculated Class 2 air shall not exceed 10% of the outdoor … C. Class 3 Air is air with significant contaminant concentration, significant sensory-irritation intensity, or offensive odor. Recirculation or transfer of Class 3 air shall be permitted in accordance with 160.2(c)8Ci and 160.2(c)8Cii: i. Recirculation of Class 3 air within the space of origin shall be permitted. [ASHRAE 62.1:5.16.3.3.1] ii. Class 3 air shall not be recirculated or transferred to any other space. [ASHRAE 62.1:5.16.3.3.2]. EXCEPTION to Section 160.2(c)8Cii: When using any energy recovery device, recirculation from leakage, carryover, or transfer from the exhaust side of the energy recovery device is permitted. Recirculated Class 3 air shall not exceed 5% of the outdoor … D. Class 4 Air is air with highly objectionable fumes or gases or with potentially dangerous particles, bioaerosols, or gases at concentrations high enough to be considered as harmful. Class 4 air shall not be recirculated or transferred to any space … E. Ancillary spaces. Redesignation of Class 1 air to Class 2 air shall be permitted for Class 1 spaces that are ancillary to Class 2 spaces. [ASHRAE 62.1:5.16.2.3] |
| 465 | F. Transfer. A mixture of air that has been transferred through or returned form spaces or locations with different air classes shall be redesignated with the highest classification among the air classes mixed. [ASHRAE 62.1:5.16.2.2] G. Classification. Air leaving each space or location shall be designated at an expected air-quality classification not less than that shown in Tables 160.2-B, 160.2-C or 160.2-D. Air leaving spaces or locations that are not listed in Tables 160.2-B, … (d) Parking Garages. Mechanical ventilation systems for enclosed parking garages in multifamily buildings shall comply with Section 120.6(c). |
| 473 | Section 160.3 – Mandatory Requirements for Space Conditioning Systems in Multifamily Buildings (a) Controls – Space conditioning systems serving dwelling units and common use areas in multifamily buildings shall comply with applicable requirements of Sections 160.3(a)1 or 160.3(a)2. 1. Dwelling Unit and common living area Thermostats. All heating or cooling systems, including heat pumps, not controlled by a central energy management control system (EMCS) shall have a setback thermostat, as specified in Section 110.2(c). A. Thermostatic Controls for Each Zone. The supply of heating and cooling energy to each space-conditioning zone shall be controlled by an individual thermostatic control that responds to temperature within the zone and that meets the applicable requi… EXCEPTION to Section 160.3(a)2A: An independent perimeter heating or cooling system may serve more than one zone without individual thermostatic controls if: i. All zones are also served by an interior cooling system; and ii. The perimeter system is designed solely to offset envelope heat losses or gains; and iii. The perimeter system has at least one thermostatic control for each building orientation of 50 feet or more; and iv. The perimeter system is controlled by at least one thermostat located in one of the zones served by the system. B. Criteria for Zonal Thermostatic Controls. The individual thermostatic controls required by Section 160.3(a)2A shall meet the following requirements as applicable: i. Where used to control comfort heating, the thermostatic controls shall be capable of being set, locally or remotely, down to 55 F or lower. ii. Where used to control comfort cooling, the thermostatic controls shall be capable of being set, locally or remotely, up to 85 F or higher. iii. Where used to control both comfort heating and comfort cooling, the thermostatic controls shall meet Items i and ii and shall be capable of providing a temperature range or dead band of at least 5 F within which the supply of heating and cooling … EXCEPTION to Section 160.3(a)2Biii: Systems with thermostats that require manual changeover between heating and cooling modes. iv. Thermostatic controls for all single zone air conditioners and heat pumps shall comply with the requirements of Section 110.2(c) and 110.12(a) and, if equipped with DDC to the Zone level, with the Automatic Demand Shed Controls of Section 110.12(b). |
| 474 | EXCEPTION Section 160.3(a)2Biv: Package terminal air conditioners, package terminal heat pumps, room air conditioners, and room air-conditioner heat pumps. C. Heat Pump Controls. All heat pumps with supplementary electric resistance heaters shall be installed with controls that comply with Section 110.2(b). D. Shut-off and Reset Controls for Space-conditioning Systems. Each space-conditioning system shall be installed with controls that comply with the following: i. The control shall be capable of automatically shutting off the system during periods of nonuse and shall have: a. An automatic time switch control device complying with Section 110.9, with an accessible manual override that allows operation of the system for up to 4 hours; or b. An occupancy sensor; or c. A 4-hour timer that can be manually operated. ii. The control shall automatically restart and temporarily operate the system as required to maintain: a. A setback heating thermostat setpoint if the system provides mechanical heating; and EXCEPTION to Section 160.3(a)2Diia: Thermostat setback controls are not required in multifamily buildings in areas where the Winter Median of Extremes outdoor air temperature determined in accordance with Section 170.2(c)1C is greater than 32 F. b. A setup cooling thermostat setpoint if the system provides mechanical cooling. EXCEPTION to Section 160.3(a)2Diib: Thermostat setup controls are not required in multifamily buildings in areas where the Summer Design Dry Bulb 0.5 percent temperature determined in accordance with Section 170.2(c)1C is less than 100 F. iii. Occupantcy Sensing Zone Controls. Space conditioning system zones serving only space(s) that are required to have occupant sensing controls in accordance with Section 160.5(b)4C, and where the Table 160.2-B occupancy category permits ventilation … a. Occupancy sensing zone controls shall comply with the Occupant Sensor Ventilation Control Device requirements of Section 160.3(c)5E and allow preoccupancy ventilation requirements of Section 160.3(c)5B; and b. Occupancy sensing zone controls shall comply with Section 110.9(b)4 and be capable of indicating a space is unoccupied no more than 20 minutes after a space has been vacated; and c. When a zone is scheduled to be occupied, and occupancy sensing controls in all space(s) served by the zone indicate the spaces are unoccupied, the zone shall be placed in occupied standby mode; and bd. In Within 5 minutes or less after of entering occupied-standby mode as described in Section 160.2(c)5: I. Automatically setup the operating cooling temperature set point by 2 F or more and setback the operating heating temperature set point by 2 F or more; or II. For multiple zone systems with Direct Digital Controls (DDC) to the zone level, setup the operating cooling temperature setpoint by 0.5 F or more and setback the operating heating temperature setpoint by 0.5 F or more. |
| 475 | ce. In Within 5 minutes or less after of entering occupied-standby mode, all airflow mechanical ventilation to the zone shall be shut remain off whenever the space temperature is between the active heating and cooling setpoints. EXCEPTION to Section 160.3(a)2Diii: Zones which are only ventilated by a natural ventilation system in accordance with Section 120.1(c)2. EXCEPTION 1 to Sections 160.3(a)2Di, ii, and iii: Where it can be demonstrated to the satisfaction of the enforcing agency that the system serves an area that must operate continuously. EXCEPTION 2 to Sections 160.3(a)2Di, ii, and iii: Systems with full load demands of 2 kW or less, if they have a readily accessible manual shut-off switch. E. Dampers for Air Supply and Exhaust Equipment. Outdoor air supply and exhaust equipment shall be installed with dampers that automatically close upon fan shutdown. EXCEPTION 1 to Section 160.3(a)2E: Equipment that serves an area that must operate continuously. EXCEPTION 2 to Section 160.3(a)2E: Gravity and other nonelectrical equipment that has readily accessible manual damper controls. EXCEPTION 3 to Section 160.3(a)2E: At combustion air intakes and shaft vents. EXCEPTION 4 to Section 160.3(a)2E: Where prohibited by other provisions of law. F. Isolation Area Devices. Each space-conditioning system serving multiple zones with a combined conditioned floor area of more than 25,000 square feet shall be designed, installed, and controlled to serve isolation areas. i. Each zone, or any combination of zones not exceeding 25,000 square feet, shall be a separate isolation area. ii. Each isolation area shall be provided with isolation devices, such as valves or dampers that allow the supply of heating or cooling to be reduced or shut-off independently of other isolation areas. iii. Each isolation area shall be controlled by a device meeting the requirements of Section 160.3(a)2Di. EXCEPTION to Section 160.3(a)2F: Zones designed to be conditioned continuously. G. Automatic Demand Shed Controls. See Section 110.12 for requirements for Automatic Demand Shed Controls. H. Economizer Fault Detection and Diagnostics (FDD). All newly-installed air handlers with a mechanical cooling capacity over33,000 Btu/hr and an installed air economizer shall include a stand-alone or integrated Fault Detection and Diagnostics (FDD)… i. The following temperature sensors shall be permanently installed to monitor system operation: outside air, supply air, and when required for differential economizer operation, a return air sensor; and ii. Temperature sensors shall have an accuracy of ±2 F over the range of 40 F to 80 F; and iii. The controller shall have the capability of displaying the value of each sensor; and iv. The controller shall provide system status by indicating the following conditions: a. Free cooling available; b. Economizer enabled; c. Compressor enabled; d. Heating enabled, if the system is capable of heating; and e. Mixed air low limit cycle active. v. The unit controller shall allow manual initiation of each operating mode so that the operation of cooling systems, economizers, fans, and heating systems can be independently tested and verified; and |
| 476 | vi. Faults shall be reported in one of the following ways: a. Reported to an Energy Management Control System regularly monitored by facility personnel. b. Annunciated locally on one or more zone thermostats, or a device within five (5) feet of zone thermostat(s), clearly visible, at eye level, and meeting the following requirements: I. On the thermostat, device, or an adjacent written sign, display instructions to contact appropriate building personnel or an HVAC technician; and II. In buildings with multiple tenants, the annunciation shall either be within property management offices or in a common space accessible by the property or building manager. c. Reported to a fault management application which automatically provides notification of the fault to remote HVAC service provider. vii. The FDD system shall detect the following faults: a. Air temperature sensor failure/fault; b. Not economizing when it should; c. Economizing when it should not; d. Damper not modulating; and e. Excess outdoor air. viii. The FDD System shall be certified by the Energy Commission as meeting requirements of Sections 160.3(a)2Hi through160.3(a)2Hvii in accordance with Section 110.0 and JA6.3. EXCEPTION to Section 160.3(a)2Hviii: FDD algorithms based in Direct Digital Control systems are not required to be certified to the Energy Commission. I. Direct Digital Controls (DDC). Direct Digital Controls to the zone shall be provided as specified by Table 160.3-C. i. The provided DDC system shall meet the control logic requirements of Sections 160.3(a)2E and 160.3(a)2G, and be capable of the following: ii. Monitoring zone and system demand for fan pressure, pump pressure, heating and cooling; iii. Transferring zone and system demand information from zones to air distribution system controllers and from air distribution systems to heating and cooling plant controllers; iv. Automatically detecting the zones and systems that may be excessively driving the reset logic and generate an alarm or other indication to the system operator; v. Readily allow operator removal of zones(s) from the reset algorithm; vi. For new buildings, trending and graphically displaying input and output points; and vii. Resetting heating and cooling setpoints in all non-critical zones upon receipt of a signal from a centralized contact or software point as described in Section 160.3(a)2G. J. Optimum Start/Stop Controls. Space conditioning systems with DDC to the zone level shall have optimum start/stop controls. The control algorithm shall, as a minimum, be a function of the difference between space temperature and occupied setpoint,… EXCEPTION to Section 160.3(a)2J: Systems that must operate continuously. (b) Dwelling Unit Space Conditioning and Air Distribution Systems. |
| 477 | 1. Building Cooling and Heating Loads. Building heating and cooling loads shall be determined using a method based on any one of the following, using cooling and heating loads as two of the criteria for equipment sizing and selection: A. The ASHRAE Handbook, Equipment Volume, Applications Volume, and Fundamentals Volume; or B. The SMACNA Residential Comfort System Installation Standards Manual; or C. The ACCA Manual J. NOTE: Heating systems are required to have a minimum heating capacity adequate to meet the minimum requirements of the CBC. 2. Design conditions. Design conditions shall be determined in accordance with the following: A. For the purpose of sizing the space-conditioning (HVAC) system, the indoor design temperatures shall be 68 F for heating and 75 F for cooling. B. Outdoor design conditions shall be selected from Reference Joint Appendix JA2, which is based on data from the ASHRAE Climatic Data for Region X. C. The outdoor design temperatures for heating shall be no lower than the Heating Winter Median of Extremes values. D. The outdoor design temperatures for cooling shall be no greater than the 1.0 percent Cooling Dry Bulb and Mean Coincident Wet Bulb values. 3. Outdoor Condensing Units. A. Clearances. Installed air conditioner and heat pump outdoor condensing units shall have a clearance of at least five (5) feet (1.5 meters) from the outlet of any dryer vent. B. Liquid Line Drier. Installed air conditioner and heat pump systems shall be equipped with liquid line filter driers if required, as specified by manufacturer’s instructions. 4. Central Forced-Air Heating Furnaces. A. Temperature Rise. Central forced-air heating furnace installations shall be configured to operate in conformance with the furnace manufacturer’s maximum inlet-to-outlet temperature rise specifications. 5. Air-Distribution and Ventilation System Ducts, Plenums, and Fans. A. CMC Compliance. |
| 478 | b. Ducts do not require insulation a minimum installed level of R-4.2 when the duct system is located entirely in conditioned space. For buildings with three or fewer habitable stories, duct systems located entirely in conditioned space shall be confi… a. The cavity, duct or plenum is located entirely inside the building’s thermal envelope as confirmed by visual inspection. b. At all locations where portions of non-insulated cavities, ducts, or plenums make a transition into unconditioned space, the transition shall be air-sealed to prevent air infiltration into the cavity and be insulated to a minimum of R-6 as confirme… B. Factory-Fabricated Duct Systems. i. All factory-fabricated duct systems shall comply with UL 181 for ducts and closure systems, including collars, connections, and splices, and be labeled as complying with UL 181. UL 181 testing may be performed by UL laboratories or a laboratory app… ii. All pressure-sensitive tapes, heat-activated tapes, and mastics used in the manufacture of rigid fiberglass ducts shall comply with UL 181 and UL 181A. iii. All pressure-sensitive tapes and mastics used with flexible ducts shall comply with UL 181 and UL 181B. iv. Joints and seams of duct systems and their components shall not be sealed with cloth back rubber adhesive duct tapes unless such tape is used in combination with mastic and drawbands. C. Field-Fabricated Duct Systems. i. Factory-made rigid fiberglass and flexible ducts for field-fabricated duct systems shall comply with UL 181. All pressure-sensitive tapes, mastics, aerosol sealants, or other closure systems used for installing field-fabricated duct systems shall m… ii. Mastic sealants and mesh. a. Sealants shall comply with the applicable requirements of UL 181, UL 181A, and UL 181B, and be nontoxic and water resistant. |
| 479 | b. Sealants for interior applications shall be tested in accordance with ASTM C731 and D2202, incorporated herein by reference. c. Sealants for exterior applications shall be tested in accordance with ASTM C731, C732, and D2202, incorporated herein by reference. d. Sealants and meshes shall be rated for exterior use. iii. Pressure-sensitive tape. Pressure-sensitive tapes shall comply with the applicable requirements of UL 181, UL 181A, and UL 181B. iv. Joints and seams of duct systems and their components shall not be sealed with cloth back rubber adhesive duct tapes unless such tape is used in combination with mastic and drawbands. v. Drawbands used with flexible duct. a. Drawbands shall be either stainless-steel worm-drive hose clamps or UV-resistant nylon duct ties. b. Drawbands shall have a minimum tensile strength rating of 150 pounds. c. Drawbands shall be tightened as recommended by the manufacturer with an adjustable tensioning tool. vi. Aerosol-sealant closures. a. Aerosol sealants shall meet the requirements of UL 723 and be applied according to manufacturer specifications. b. Tapes or mastics used in combination with aerosol sealing shall meet the requirements of this section. D. Duct Insulation R-value Ratings. All duct insulation product R-values shall be based on insulation only (excluding air films, vapor retarder, or other duct components) and tested C-values at 75 F mean temperature at the installed thickness, in acco… E. Duct Insulation Thickness. The installed thickness of duct insulation used to determine its R-value shall be determined as follows: i. For duct board, duct liner, and factory-made rigid ducts not normally subjected to compression, the nominal insulation thickness shall be used. ii. For duct wrap, installed thickness shall be assumed to be 75 percent (25 percent compression) of nominal thickness. iii. For factory-made flexible air ducts, the installed thickness shall be determined by dividing the difference between the actual outside diameter and nominal inside diameter by two. F. Duct Labeling. Insulated flexible duct products installed to meet this requirement shall include labels, in maximum intervals of 3 feet, showing the thermal performance R-value for the duct insulation itself (excluding air films, vapor retarder, or… G. Backdraft Dampers. All fan systems, regardless of volumetric capacity, that exchange air between the building conditioned space and the outside of the building shall be provided with backdraft or automatic dampers to prevent unintended air leakage … H. Gravity Ventilation Dampers. All gravity ventilating systems that serve conditioned space shall be provided with either automatic or readily accessible, manually operated dampers in all openings to the outside except combustion inlet and outlet air… I. Protection of Insulation. Insulation shall be protected from damage, including that due to sunlight, moisture, equipment maintenance, and wind but not limited to the following: Insulation exposed to weather shall be suitable for outdoor service (e…. |
| 480 | J. Porous Inner Core Flex Duct. Flexible ducts having porous inner cores shall have a non-porous layer or air barrier between the inner core and the outer vapor barrier. K. Duct System Sealing and Leakage Testing. When space conditioning systems utilize forced air duct systems to supply conditioned air to an individual dwelling unit, the ducts shall be sealed, as confirmed through field verification and diagnostic tes… For multifamily dwellings with the air-handling unit installed and the ducts connected directly to the air handler, regardless of duct system location: i. The total leakage of the duct system shall not exceed 12 percent of the air handler airflow as determined utilizing the procedures in Reference Residential Appendix Section RA3.1.4.3.1; or ii. The duct system leakage to outside shall not exceed 6 percent of the air handler airflow as determined utilizing the procedures in Reference Residential Appendix Section RA3.1.4.3.4. EXCEPTION 1 to Section 160.3(b)5K: The HERS Rater field verification and HERS Provider data registry requirements of Reference Residential Appendix RA2 and RA3 are not required for multifamily dwelling units in buildings four habitable stories and gre… EXCEPTION 2 to Section 160.3(b)5K: Multifamily dwelling units in buildings four habitable stories and greater in Climate Zone 1, 3, 5, and 7. L. System Airflow Rate and Fan Efficacy. Space conditioning systems that utilize forced air ducts to supply cooling to an individual dwelling unit shall: i. Static Pressure Probe. Have a hole for the placement of a static pressure probe (HSPP), or a permanently installed static pressure probe (PSPP) in the supply plenum downstream of the air conditioning evaporator coil. The size, location, and labelin… EXCEPTION to Section 160.3(b)5Li: Systems that cannot conform to the specifications for hole location in Reference Residential Appendix Figure RA3.3-1 shall not be required to provide holes as described in Figure RA3.3-1. ii. Single Zone Central Forced Air Systems. Demonstrate, in every control mode, airflow greater than or equal to 350 cfm per ton of nominal cooling capacity through the return grilles, and an air-handling unit fan efficacy less than or equal to the ma… a. 0.45 W/cfm for gas furnace air-handling units. b. 0.58 W/cfm for air-handling units that are not gas furnaces. |
| 481 | iii. Zonally Controlled Central Forced Air Systems. Zonally controlled central forced air cooling systems shall be capable of simultaneously delivering, in every zonal control mode, an airflow from the dwelling, through the air handler fan and deliver… a. 0.45 W/cfm for gas furnace air-handling units. b. 0.58 W/cfm for air-handling units that are not gas furnaces. EXCEPTION 1 to Section 160.3(b)5Liii: Multispeed or variable speed compressor systems, or single speed compressor systems that utilize the performance compliance approach, shall demonstrate compliance with the airflow (cfm/ton) and fan efficacy (Watt/… iv. Small Duct High Velocity Forced Air Systems. Demonstrate, in every control mode, airflow greater than or equal to 250 cfm per ton of nominal cooling capacity through the return grilles, and an air-handling unit fan efficacy less than or equal to 0… EXCEPTION 1 to Section 160.3(b)5Liv: Standard ducted systems without zoning dampers may comply by meeting the applicable requirements in TABLE 160.3-A or 160.3-B as confirmed by field verification and diagnostic testing in accordance with the procedur… EXCEPTION 1 to Section 160.3(b)5L: The HERS Rater field verification and HERS Provider data registry requirements of Reference Residential Appendix RA2 and RA3 are not required for multifamily dwelling units in buildings four habitable stories and gre… EXCEPTION 2 to Section 160.3(b)5L: Multifamily dwelling units in buildings four habitable stories and greater in Climate Zone 1. 6. Piping for space conditioning systems, solar water-heating system collector loop, and distribution piping for steam and hydronic heating system, shall meet the requirements of Section 160.3(c)1. |
| 482 | (c) Fluid Distribution Systems; Common Services Area Space-Conditioning Systems. Multifamily buildings shall comply with the applicable requirements of Section 160.3(a)1. Multifamily common services areas shall comply with the applicable requirements … 1. Pipe Insulation. Multifamily buildings shall comply with the applicable requirements of Sections 160.3(c)1A through 160.3(c)1D. A. General Requirements. The piping conditions listed below for space-conditioning systems with fluid normal operating temperatures listed in 160.3-D, shall have at least the amount of insulation specified in Section 160.3(c)1C: i. Space Cooling Systems. All refrigerant suction, chilled water, and brine fluid distribution systems. ii. Space Heating Systems. All refrigerant, steam, steam condensate and hot water fluid distribution systems. B. Insulation conductivity shall be determined in accordance with ASTM C335 at the mean temperature listed in 160.3-D, and shall be rounded to the nearest 1/100 Btu-inch per hour per square foot per F. Fluid distribution systems include all elements… C. Insulation Protection. Pipe Insulation shall be protected from damage due to sunlight, moisture, equipment maintenance, and wind. Protection shall, at minimum, include the following: i. Pipe insulation exposed to weather shall be protected by a cover suitable for outdoor service. The cover shall be water retardant and provide shielding from solar radiation that can cause degradation of the material. Adhesive tape shall not be us… ii. Pipe insulation covering chilled water piping and refrigerant suction piping located outside the conditioned space shall include, or be protected by, a Class I or Class II vapor retarder. All penetrations and joints shall be sealed. iii. Pipe insulation buried below grade must be installed in a water proof and non-crushable casing or sleeve. D. Insulation Thickness i. For insulation with a conductivity in the range shown in 160.3-D for the applicable fluid temperature range, the insulation shall have the applicable minimum thickness or R-value shown in 160.3-D. ii. For insulation with a conductivity outside the range shown in 160.3-D for the applicable fluid temperature range, the insulation shall have a minimum R-value shown in 160.3-D or thickness as calculated with Equation 160.3-A: |
| 483 | EXCEPTION 1 to Section 160.3(c)1: Factory-installed piping within space-conditioning equipment certified under Section 110.1 or 110.2. EXCEPTION 2 to Section 160.3(c)1: Piping that conveys fluids with a design operating temperature range between 60 F and 105 F. EXCEPTION 3 to Section 160.3(c)1: Where the heat gain or heat loss to or from piping without insulation will not increase building source energy use. EXCEPTION 4 to Section 160.3(c)1: Piping that penetrates framing members shall not be required to have pipe insulation for the distance of the framing penetration. Metal piping that penetrates metal framing shall use grommets, plugs, wrapping or other… 2. Requirements for Air Distribution System, Ducts, and Plenum. Multifamily common services areas shall comply with the applicable requirements of Sections 160.3(c)2A through 160.3(c)2F. A. CMC Compliance. All air distribution system ducts and plenums, including, but not limited to, building cavities, mechanical closets, air-handler boxes and support platforms used as ducts or plenums, shall meet the requirements of the CMC Sections 6… B. Portions of supply-air and return-air ducts conveying heated or cooled air located in one or more of the following spaces shall be insulated to a minimum installed level of R-8: i. Outdoors; or ii. In a space between the roof and an insulated ceiling; or iii. In a space directly under a roof with fixed vents or openings to the outside or unconditioned spaces; or iv. In an unconditioned crawlspace; or v. In other unconditioned spaces. Portions of supply-air ducts that are not in one of these spaces, including ducts buried in concrete slab, shall be insulated to a minimum installed level of R-4.2 or be enclosed in directly conditioned space. |
| 484 | C. Duct and Plenum Materials. i. Factory-fabricated duct systems. a. All factory-fabricated duct systems shall comply with UL 181 for ducts and closure systems, including collars, connections, and splices, and be labeled as complying with UL 181. UL 181 testing may be performed by UL laboratories or a laboratory app… b. All pressure-sensitive tapes, heat-activated tapes, and mastics used in the manufacture of rigid fiberglass ducts shall comply with UL 181 and UL 181A. c. All pressure-sensitive tapes and mastics used with flexible ducts shall comply with UL 181 and UL 181B. d. Ductwork and plenums with pressure class ratings shall be constructed to Seal Class A. Joints and seams of duct systems and their components shall not be sealed with cloth back rubber adhesive duct tapes unless such tape is used in combination with… EXCEPTION to Section 160.3(c)2Cid: Ductwork located in occupied space and exposed to view. ii. Field-fabricated duct systems. a. Factory-made rigid fiberglass and flexible ducts for field-fabricated duct systems shall comply with UL 181. All pressure-sensitive tapes, mastics, aerosol sealants, or other closure systems used for installing field-fabricated duct systems shall m… b. Mastic sealants and mesh. I. Sealants shall comply with the applicable requirements of UL 181, UL 181A, and UL 181B, and be nontoxic and water resistant. II. Sealants for interior applications shall pass ASTM C731 (extrudability after aging) and D2202 (slump test on vertical surfaces), incorporated herein by reference. III. Sealants for exterior applications shall pass ASTM C731, C732 (artificial weathering test), and D2202, incorporated herein by reference. IV. Sealants and meshes shall be rated for exterior use. c. Pressure-sensitive tape. Pressure-sensitive tapes shall comply with the applicable requirements of UL 181, UL 181A, and UL 181B. d. Ductwork and plenums with pressure class ratings shall be constructed to Seal Class A. Joints and seams of duct systems and their components shall not be sealed with cloth back rubber adhesive duct tapes unless such tape is used in combination with… e. Drawbands used with flexible duct. I. Drawbands shall be either stainless-steel worm-drive hose clamps or UV-resistant nylon duct ties. II. Drawbands shall have a minimum tensile strength rating of 150 pounds. III. Drawbands shall be tightened as recommended by the manufacturer with an adjustable tensioning tool. f. Aerosol-sealant closures. I. Aerosol sealants shall meet the requirements of UL 723 and be applied according to manufacturer specifications. II. Tapes or mastics used in combination with aerosol sealing shall meet the requirements of this section. |
| 485 | D. All duct insulation product R-values shall be based on insulation only (excluding air films, vapor retarders, or other duct components) and tested C-values at 75 F mean temperature at the installed thickness, in accordance with ASTM C518 or ASTM C1… E. The installed thickness of duct insulation used to determine its R-value shall be determined as follows: i. For duct board, duct liner, and factory-made rigid ducts not normally subjected to compression, the nominal insulation thickness shall be used. ii. For duct wrap, installed thickness shall be assumed to be 75 percent (25 percent compression) of nominal thickness. iii. For factory-made flexible air ducts, the installed thickness shall be determined by dividing the difference between the actual outside diameter and nominal inside diameter by two. F. Insulated flexible duct products installed to meet this requirement must include labels, in maximum intervals of 3 feet, showing the thermal performance R-value for the duct insulation itself (excluding air films, vapor retarder, or other duct comp… G. Insulation shall be protected from damage, including that due to sunlight, moisture, equipment maintenance, and wind but not limited to the following: Insulation exposed to weather shall be suitable for outdoor service e.g., protected by aluminum, … H. Duct systems shall be tested in accordance with i or ii below i. New duct systems that meet the criteria in Subsections a, b and c below or ductwork that is part of a system that meets the criteria of Section 180.2(b)2B shall be sealed to a leakage rate not to exceed 6 percent of the nominal air handler airflow… a. The duct system provides conditioned air to an occupiable space for a constant volume, single zone, space-conditioning system; and b. The space conditioning system serves less than 5,000 square feet of conditioned floor area; and c. The combined surface area of the ducts located in the following spaces is more than 25 percent of the total surface area of the entire duct system: I. Outdoors; or II. In a space directly under a roof that has a U-factor greater than the U-factor of the ceiling, or if the roof does not meet the requirements of Section 170.2(a)1; or III. In a space directly under a roof that has fixed vents or openings to the outside or unconditioned spaces; or IV. In an unconditioned crawlspace; or V. In other unconditioned spaces. ii. All duct systems that do not meet the criteria in Section 160.3(c)2H shall meet the duct leakage testing requirements of CMC Section 603.10.1. (d)3.Mechanical Acceptance Testing. Multifamily common services areas shall comply with the applicable requirements of Sections 160.3(c)3A and 160.3(c)3B. 1.A.Common Areas. Before an occupancy permit is granted, the following equipment systems and systems equipment serving multifamily common areas shall be certified as meeting the Acceptance Requirements for Code Compliance, as specified by the Referenc… |
| 486 | Ai. Outdoor air ventilation systems shall be tested in accordance with NA7.5.1 Bii. Constant volume, single zone air conditioning and heat pump unit controls shall be tested in accordance with NA7.5.2. Ciii. Duct systems shall be tested in accordance with NA7.5.3 where either: a. They are new duct systems; or b. They are part of an altered system. Div. Air economizers shall be tested in accordance with NA7.5.4. EXCEPTION to Section160.3(cd)1D3Aiv: Air economizers installed by the HVAC system manufacturer and certified to the Commission as being factory calibrated and tested are exempt from the Functional Testing section of the Air Economizer Controls accepta… Ev. Demand control ventilation systems required by Section 160.2(c)3 shall be tested in accordance with NA7.5.5 Fvi. Supply fan variable flow controls shall be tested in accordance with NA7.5.6 Gvii. Hydronic system variable flow controls shall be tested in accordance with NA7.5.7 and NA7.5.9 Hviii. Boiler or chillers that require isolation controls as specified by Section 170.2(c)4Iii or 170.2(c)4Iiii shall be tested in accordance with NA7.5.7 Iix. Hydronic systems with supply water temperature reset controls shall be tested in accordance with NA7.5.8 Jx. Automatic demand shed controls shall be tested in accordance with NA7.5.10. Kxi. Fault Detection and Diagnostics (FDD) for Packaged Direct-Expansion Units shall be tested in accordance with NA7.5.11. Lxii. Automatic Fault Detection and Diagnostics (FDD) for air handling units and zone terminal units shall be tested in accordance with NA7.5.12. Mxiii. Distributed Energy Storage DX AC Systems shall be tested in accordance with NA7.5.13. Nxiv. Thermal Energy Storage (TES) Systems shall be tested in accordance with NA7.5.14. Oxv. Supply air temperature reset controls shall be tested in accordance with NA7.5.15. Pxvi. Water-cooled chillers served by cooling towers with condenser water reset controls shall be tested in accordance with NA7.5.16. Qxvii. When an Energy Management Control System is installed, it shall functionally meet all of the applicable requirements of Part 6. Rxviii. Occupant Sensing Zone Controls shall be tested in accordance with NA7.5.17. |
| 487 | 3B. When certification is required by Title 24, Part 1, Section 10-103.2, the acceptance testing specified by Section 160.3(cd)3A 1 and 2 shall be performed by a Certified Mechanical Acceptance Test Technician (CMATT). If the CMATT is operating as an … |
| 491 | Section 160.4 – Mandatory Requirements for Water Heating Systems (a) Systems using gas or propane water heaters to serve individual dwelling units shall include the following components: 1. A dedicated 125 volt, 20 amp electrical receptacle that is connected to the electric panel with a 120/240 volt 3 conductor, 10 AWG copper branch circuit, within 3 feet from the water heater and accessible to the water heater with no obstructions. … A. Both ends of the unused conductor shall be labeled with the word “spare” and be electrically isolated; and B. A reserved single pole circuit breaker space in the electrical panel adjacent to the circuit breaker for the branch circuit in A above and labeled with the words “Future 240V Use”; and 2. A Category III or IV vent, or a Type B vent with straight pipe between the outside termination and the space where the water heater is installed; and 3. A condensate drain that is no more than 2 inches higher than the base of the installed water heater, and allows natural draining without pump assistance, and 4. A gas supply line with a capacity of at least 200,000 Btu/hr. (b) Water heating recirculation loops serving multiple dwelling units shall meet the requirements of Section 110.3(c)4. (c) Solar water-heating systems and collectors shall be certified and rated by the Solar Rating and Certification Corporation (SRCC), the International Association of Plumbing and Mechanical Officials, Research and Testing (IAPMO R&T), or by a listing… (d) Instantaneous water heaters with an input rating greater than 6.8 kBTU/hr (2kW) shall meet the requirements of Section 110.3(c)6.7 (e) Commercial Boilers 1. Combustion air positive shut-off shall be provided on all newly installed boilers as follows: A. All boilers with an input capacity of 2.5 MMBtu/h (2,500,000 Btu/h) and above, in which the boiler is designed to operate with a nonpositive vent static pressure. B. All boilers where one stack serves two or more boilers with a total combined input capacity per stack of 2.5 MMBtu/h (2,500,000 Btu/h). 2. Boiler combustion air fans with motors 10 horsepower or larger shall meet one of the following for newly installed boilers: A. The fan motor shall be driven by a variable speed drive, or B. The fan motor shall include controls that limit the fan motor demand to no more than 30 percent of the total design wattage at 50 percent of design air volume. 3. Newly installed boilers with an input capacity 5 MMBtu/h (5,000,000 Btu/h) and greater shall maintain excess (stack-gas) oxygen concentrations at less than or equal to 5.0 percent by volume on a dry basis over firing rates of 20 percent to 100 perc… EXCEPTION to Section 160.4(e)3: Boilers with steady state full-load thermal combustion efficiency 90 percent or higher. (f) Insulation for Piping and Tanks 1. Storage tank insulation. Unfired hot water tanks, such as storage tanks and backup storage tanks for solar water-heating systems, shall be externally wrapped with insulation having an installed thermal resistance of R-4 or greater. |
| 492 | EXCEPTION to Section 160.4(f)1: Unfired storage tank with internal insulation of at least R-16 and a label on the exterior of the tank showing the insulation R-value. 12. Piping for multifamily domestic hot water systems, shall be insulated to meet the requirements of Table 160.4-A. EXCEPTION 1 to Section 160.4(f)12: Factory-installed piping within space-conditioning equipment certified under Section 110.1 or 110.2. EXCEPTION 2 to Section 160.4(f)12: Piping that penetrates framing members shall not be required to have pipe insulation for the distance of the framing penetration. Piping that penetrates metal framing shall use grommets, plugs, wrapping or other insu… EXCEPTION 3 to Section 160.4(f)12: Piping installed in interior or exterior walls shall not be required to have pipe insulation if all of the requirements are met for compliance with Quality Insulation Installation (QII) as specified in the Reference … EXCEPTION 4 to Section 160.4(f)12: Piping surrounded with a minimum of 1 inch of wall insulation, 2 inches of crawlspace insulation, or 4 inches of attic insulation, shall not be required to have pipe insulation. 23. Insulation Protection. Pipe Insulation shall be protected from damage due to sunlight, moisture, equipment maintenance, and wind. Protection shall, at minimum, include the following: A. Pipe insulation exposed to weather shall be protected by a cover suitable for outdoor service. The cover shall be water retardant and provide shielding from solar radiation that can cause degradation of the material. Adhesive tape shall not be us… B. Pipe insulation covering chilled water piping and refrigerant suction piping located outside the conditioned space shall include, or be protected by, a Class I or Class II vapor retarder. All penetrations and joints shall be sealed. C. Pipe insulation buried below grade must be installed in a water proof and non-crushable casing or sleeve. |
| 493 | Section 160.5 – Mandatory Lighting Requirements for Indoor and Outdoor Spaces (a) Dwelling Unit and Common Living Area Lighting. 1. Luminaire Requirements. A. Luminaire Efficacy. All installed luminaires shall meet the requirements in TABLE 160.5-A. B. Screw based luminaires. Screw based luminaires shall contain lamps that comply with Reference Joint Appendix JA8 or may contain lamps as specified in Table 150.0-A including qualified colored lamps, dim-to-warm lamps, tunable-white lamps, color-tu… C. Recessed Downlight Luminaires In addition to complying with Section 160.5(a)1A, luminaires recessed into ceilings shall meet all of the following requirements: i. Shall not contain screw base lamp sockets; and ii. Have a label that certifies the luminaire is airtight with air leakage less than 2.0 cfm at 75 Pascals when tested in accordance with ASTM E283. An exhaust fan housing with integral light shall not be required to be certified airtight; and iii. Be sealed with a gasket or caulk between the luminaire housing and ceiling, and have all air leak paths between conditioned and unconditioned spaces sealed with a gasket or caulk, or be installed per manufacturer’s instructions to maintain airtig… iv. Meet the clearance and installation requirements of California Electrical Code Section 410.116 for recessed luminaires. D. Light Sources in Enclosed or Recessed Luminaires. Lamps and other separable light sources that are not compliant with the JA8 elevated temperature requirements, including marking requirements, shall not be installed in enclosed or recessed luminaires. |
| 494 | 2. Indoor Lighting Controls. A. Lighting shall have readily accessible wall-mounted controls that allow the lighting to be manually turned ON and OFF. EXCEPTION to Section 160.5(a)2A: Ceiling fans may provide control of integrated lighting via a remote control. B. No controls shall bypass a dimmer, occupant sensor or vacancy sensor function where that dimmer or sensor has been installed to comply with Section160.5(a)2. C. Lighting controls shall comply with the applicable requirements of Section 110.9. D. An Energy Management Control System (EMCS) or a multiscene programmable controller may be used to comply with dimming, occupancy, and lighting control requirements in Section 160.5(a)2 if it provides the functionality of the specified controls in a… E. Automatic Off Controls. F. Dimming Controls. Lighting in habitable spaces, including but not limited to living rooms, dining rooms, kitchens, and bedrooms, shall have readily accessible wall-mounted dimming controls that allow the lighting to be manually adjusted up and down… |
| 495 | 3. Outdoor Lighting Controls. In addition to meeting the requirements of Section 160.5(a)1, luminaires providing residential outdoor lighting shall meet the following requirements, as applicable: A. Outdoor lighting attached to a building and separately controlled from the inside of a dwelling unit, shall meet the requirement in item i and the requirements in either item ii or item iii: |
| 496 | (b) Common Services Area Lighting. Lighting systems and equipment in multifamily common services areas shall comply with the applicable provisions of Sections 160.5(b)1 through 160.5(b)4. NOTE: The requirements of Section160.5(b) applies to newly constructed buildings. Sections 180.1 and 180.2 specify which requirements of Sections 160.5(b)1 through 160.5(e) also apply to additions and alterations to existing buildings. 1. Luminaire classification and power. Luminaires shall be classified and their wattage determined as follows: A. Luminaire wattage shall be labeled as follows: i. The maximum rated wattage or relamping rated wattage of a luminaire shall be listed on a permanent, preprinted, factory-installed label, as specified by UL 1574, 1598, 2108, or 8750, as applicable; and ii. The factory-installed maximum rated wattage or relamping rated wattage label shall not consist of peel-off or peel-down layers or other methods that allow the rated wattage to be changed after the luminaire has been shipped from the manufacturer Exception to Section 160.3(b)1Aii: Luminaires with a single lamp and an integrated ballast or transformer may use a peel-down label provided that they are layered such that the rated wattage reduces as successive layers are removed. a. Low-voltage luminaires (except low voltage track systems), ≤ 24 volts, with a maximum relamping rated wattage of 50 watts. b. Compact fluorescent luminaires, having an integral electronic ballast, with a maximum relamping rated wattage of 42 watts. c. High intensity discharge luminaires, having an integral electronic ballast, with a maximum relamping rated wattage of 150 watts. B. For luminaires with line voltage lamps not served by drivers, ballasts, or transformers, the wattage of such luminaires shall be determined as the maximum rated wattage as labeled in accordance with Section 160.5(b)1A. C. For luminaires with permanently installed or remotely installed ballasts, the wattage of such luminaires shall be the operating input wattage of the rated lamp/ballast combination published in the ballast manufacturer’s catalogs based on independen… D. For inseparable SSL luminaires and SSL luminaires with remotely mounted drivers, the maximum rated wattage shall be the maximum rated input wattage of the SSL luminaire as specified in Section 160.5(b)1A when tested in accordance with UL 1598, 2108… E. For LED tape lighting and LED linear lighting with LED tape lighting components, the maximum rated wattage shall be the sum of the installed length of the tape lighting times its rated linear power density in watts per linear feet, or the maximum r… F. For modular lighting systems that allow the addition or relocation of luminaires without altering the wiring of the system, shall be determined as follows: i. The wattage shall be the greater of: a. 30 watts per linear foot of track or plug-in busway; or b. the rated wattage of all of the luminaires included in the system, where the luminaire wattage is determined as specified in Section 160.5(b)1A; or ii. For line-voltage lighting track and plug-in busway served by a track lighting integral current limiter or a dedicated track lighting supplementary overcurrent protection panel, the wattage shall be determined as follows: |
| 497 | a. The volt-ampere rating of current limiter as specified by UL 1077; or b. The sum of the ampere (A) rating of all of the current protection devices times the branch circuit voltages for track lighting supplementary overcurrent protection panel. iii. For other modular lighting systems with power supplied by a driver, power supply or transformer, including but not limited to low-voltage lighting systems, the wattage of the system shall be the maximum rated input wattage of the driver, power su… EXCEPTION to Section 160.5(b)1F: For power-over-Ethernet lighting systems, power provided to installed non-lighting devices may be subtracted from the total power rating of the power-over-Ethernet system. G. For all other lighting equipment not addressed by Sections 160.5(b)1B through F, the wattage of the lighting equipment shall be the maximum rated wattage of the lighting equipment, or operating input wattage of the system, labeled in accordance wit… 2. Lighting Controls. All lighting controls and equipment shall comply with the applicable requirements in Sections 110.9, 160.5(b) and 160.5(c), and shall be installed in accordance with any applicable manufacturer instructions. 3. Energy Management Control System (EMCS). An EMCS may be installed to comply with the requirements of one or more lighting controls if it meets the following minimum requirements: A. Provides all applicable functionality for each specific lighting control or system for which it is installed in accordance with Sections 110.9, 160.5(b) and 160.5(c); and B. Complies with all applicable Lighting Control Installation Requirements in accordance with Section 160.5(e) for each specific lighting control or system for which it is installed; and C. Complies with all applicable application requirements for each specific lighting control or system for which it is installed, in accordance with Part 6. 4. Mandatory Indoor Lighting Controls. Multifamily common use areas shall comply with the applicable requirements of Sections 160.5(b)4A through 160.5(b)4F, in addition to the applicable requirements of Sections 110.9. A. Manual Area Controls. Each area enclosed by ceiling-height partitions shall provide lighting controls that allow the lighting in that area to be manually turned on and off. The manual control shall: i. Be readily accessible; and EXCEPTION to Section 160.5(b)4Ai: Restrooms having two or more stalls, parking areas, stairwells, corridors, and areas of the building intended for access or use by the public may use a manual control not accessible to unauthorized personnel. ii. Be located in the same enclosed area with the lighting it controls; and EXCEPTION to Section 160.5(b)4Aii: For areas where placement of a manual area control poses a health and safety hazard, the manual area control may instead be located so that a person using the control can see the lights or area controlled by that con… iii. Provide separate control of general, floor display, wall display, window display, case display, ornamental, and special effects lighting, such that each type of lighting can be turned on or off without turning on or off other types of lighting. S… EXCEPTION to Section 160.5(b)4A: Up to 0.1 watts per square foot of indoor lighting may be continuously illuminated to allow for means of egress illumination consistent with California Building Code Section 1008. Egress lighting complying with this wa… |
| 498 | i. The area is designated for means of egress on the plans and specifications submitted to the enforcement agency under Section 10-103(a)2 of Part 1; and ii. The controls for the egress lighting are not accessible to unauthorized personnel. B. Multi-Level Lighting Controls. The general lighting of any enclosed area 100 square feet or larger with a connected lighting load that exceeds 0.5 watts per square foot shall provide multi-level lighting controls that allow the level of lighting t… i. Provide the number of control steps specified in TABLE 160.5-B; and ii. Meet the uniformity requirements specified in TABLE 160.5-B. EXCEPTION 2 to Section 160.5(b)4B: Restrooms. C. Automatic Shut-OFF Controls. All installed indoor lighting shall be equipped with controls able to automatically reduce lighting power when the space is typically unoccupied. EXCEPTION to Section 160.5(b)4C: Lighting providing means of egress illumination, as the term is used in the California Building Code, shall be configured to provide no less than the amount of light required by California Building Code Section 1008 wh… i. In addition to lighting controls installed to comply with Sections 160.5(b)4A and B, all installed indoor lighting shall be equipped with controls that meet the following requirements: a. Shall be controlled with an occupant sensing control, automatic time-switch control, or other control capable of automatically shutting OFF all of the lighting when the space is typically unoccupied; and b. Separate controls for the lighting on each floor, other than lighting in stairwells; and c. Separate controls for a space enclosed by ceiling height partitions not exceeding 5,000 square feet; and d. Separate controls for general, display, ornamental, and display case lighting; and e. For automatic time-switch controls, may include a manual-on mode. EXCEPTION 1 to Section 160.5(b)4Ci: Where the lighting is serving an area that is in continuous use, 24 hours per day/365 days per year. EXCEPTION 2 to Section 160.5(b)4Ci: Lighting complying with Section 160.5(b)4Cv or vii. EXCEPTION 3 to Section 160.5(b)4Ci: Up to 0.1 watts per square foot of lighting in any area within a building may be continuously illuminated, provided that the area is designated for means of egress on the plans and specifications submitted to the en… EXCEPTION 4 to Section 160.5(b)4Ci: Electrical equipment rooms subject to Article 110.26(D) of the California Electrical Code. EXCEPTION 5 to Section 160.5(b)4Ci: Illumination provided by lighting equipment that is designated for emergency lighting, connected to an emergency power source or battery supply, and is intended to function in emergency mode only when normal power i… EXCEPTION 6 to Section 160.5(b)4Ci: Lighting in stairways provided that the stairway is designated for means of egress on the plans and specifications submitted to the enforcement agency under Section 10-103(a)2 of Part 1. |
| 499 | ii. Countdown timer switches may be used to comply with the automatic shut-OFF control requirements in Section 160.5(b)4Ci only in closets less than 70 square feet. The maximum timer setting shall be 10 minutes for closets. iii. If an automatic time-switch control, other than an occupant sensing control, is installed to comply with Section 160.5(b)4Ci, it shall incorporate a manual override lighting control that: a. Complies with 160.5(b)4A; and b. Allows the lighting to remain ON for no more than 2 hours when an override is initiated. iv. If an automatic time-switch control, other than an occupant sensing control, is installed to comply with Section 160.5(b)4Ci, it shall incorporate an automatic holiday “shut-OFF” feature that turns OFF all loads for at least 24 hours, and then res… v. Occupant Sensing Controls are required for specified offices, multipurpose rooms, conference rooms and restrooms. Lighting installed inIn offices 250 square feet or smaller, multipurpose rooms of less than 1,000 square feet, conference rooms of any… In areas required by Section 160.5(b)4B to have multi-level lighting controls, the occupant sensing controls shall function either as: a. a partial-ON occupant sensing control capable of automatically activating between 50-70 percent of controlled lighting power, or b. a vacancy sensing control, where all lighting responds to a manual ON input only. In areas not required by Section 160.5(b)4B to have multi-level lighting controls, the occupant sensing controls shall function either as: a. an occupant sensing control; or b. a partial-ON occupant sensing control, or c. a vacancy sensing control, where all lighting responds to a manual ON input only. In addition, controls shall be provided that allow the lights to be manually shut-OFF in accordance with Section 160.5(b)4A regardless of the sensor status. vi. Full or Partial OFF occupant sensing controls are required for corridors and stairwells, and offices greater than 300250 square feet. Lighting installed in the following areas shall meet the following requirements below in addition to complying wi… a. Lighting installed inIn corridors and stairwells, lighting shall be controlled by occupant sensing controls that separately reduce the lighting power in each space by at least 50 percent when the space is unoccupied. The occupant sensing controls s… EXCEPTION to Section 160.5(b)4Cvia: In corridors and stairwells in which the installed lighting power is 80 percent or less of the value allowed under the Area Category Method, occupant sensing controls shall reduce power by at least 40 percent. b. In office spaces greater than 250 square feet, general lighting shall be controlled by occupancy sensing controls that meet all of the following: I. The occupancy sensing controls shall be configured so that lighting shall be controlled separately in control zones not greater than 600 square feet. For luminaires with an embedded occupancy sensor that are capable of reducing power independently … |
| 500 | II. Within In 20 minutes of or less after the control zone being is unoccupied, the occupancy sensing controls shall uniformly reduce lighting power in the control zone to by at least 80 percent of full power. Control functions that switch control zon… III. Within In 20 minutes of or less after the entire office space being is unoccupied, the occupancy sensing controls shall automatically turn off lighting in all control zones in the space; and IV. In each control zone, lighting shall be allowed to automatically turn on to any level up to full power upon occupancy within the control zone. When occupancy is detected in any control zone in the space, the lighting in other control zones that ar… EXCEPTION to Section 160.5(b)4Cvi130.1(c)6D: Under-shelf or furniture-mounted task lighting controlled by a local switch and either a time switch or an occupancy sensor. vii. Partial OFF occupant sensing controls are required for parking garages, parking areas, and loading and unloading areas. General lighting Lighting installed in the following areas shall meet the following requirements below instead of complying wi… a. (reserved) b. In parking garages, parking areas and loading and unloading areas, general lighting shall be controlled by occupant sensing controls having at least one control step between 20 percent and 50 percent of design lighting power. No more than 500 watts… Interior areas of parking garages are classified as indoor lighting for compliance with Section 160.5(b)4Cviib. Parking areas on the roof of a parking structure are classified as outdoor hardscape and shall comply with the (applicable provisions in S… EXCEPTION to Section 160.5(b)4Cviib: Metal halide luminaires with a lamp plus ballast mean system efficacy of greater than 75 lumens per watt, used for general lighting in parking garages, parking areas and loading and unloading areas, shall be contro… D. Automatic Daylighting Controls. The general lighting in skylit daylit zones, primary sidelit daylit zones, and secondary sidelit daylit zones, as well as the general lighting in the combined primary and secondary sidelit daylit zones in parking gar… i. All skylit daylit zones, primary sidelit daylit zones, secondary sidelit daylit zones and the combined primary and secondary sidelit daylit zones in parking garages shall be shown on the plans. NOTE: Parking areas on the roof of a parking structure are outdoor hardscape, not skylit daylit areas. ii. The automatic daylighting controls shall provide separate control for general lighting in each type of daylit zone. General Lighting in overlapping skylit daylit zone and sidelit daylit zone shall be controlled as part of the Sskylit Ddaylit Zzone… |
| 501 | iii. The automatic daylighting controls shall: a. For spaces required to install multilevel controls under Section 160.5(b)4B, adjust lighting via continuous dimming or the number of control steps provided by the multilevel controls; b. For each space, ensure the combined illuminance from the controlled lighting and daylight is not less than the illuminance from controlled lighting when no daylight is available; c. For areas other than parking garages, ensure that when the daylight illuminance is greater than 150 percent of the illuminance provided by the controlled lighting system when no daylight is available, the controlled lighting power in that daylight … d. For parking garages, ensure that when daylight illuminance levels measured at the farthest edge of the secondary sidelit zone away from the glazing or opening are greater than 150 percent of the illuminance provided by the controlled lighting when … iv. Photosensor shall be located so that they are not readily accessible to unauthorized personnel. v. The location where calibration adjustments are made to the automatic daylighting controls shall be readily accessible to authorized personnel but may be inside a locked case or under a cover which requires a tool for access. EXCEPTION 1 to Section 160.5(b)4D: Areas under skylights where it is documented that existing adjacent structures or natural objects block direct sunlight for more than 1,500 daytime hours per year between 8a.m. and 4p.m. EXCEPTION 2 to Section 160.5(b)4D Areas adjacent to vertical glazing below an overhang, where the overhang covers the entire width of the vertical glazing, no vertical glazing is above the overhang, and the ratio of the overhang projection to the over… EXCEPTION 3 to Section 160.5(b)4D: Rooms in which the total installed general lighting power in the Skylit Daylit Zone and Primary Sidelit Daylit Zone is less than 120 watts do not require automatic daylighting controls in the daylit zones. EXCEPTION 4 to Section 160.5(b)4D: Rooms in which the total installed general lighting power in the Secondary Sidelit Daylit Zone is less than 120 watts do not require automatic daylighting controls in the secondary sidelit daylit zones. EXCEPTION 5 to Section 160.5(b)4D: Rooms in which the total installed wattage of the general lighting in the primary and the secondary sidelit daylit zones is less than 240 watts do not require automatic daylighting controls in the secondary sidelit d… EXCEPTION 6 4 to Section 160.5(b)4D: Parking garage areas where the total installed wattage of the general lighting in the primary and the secondary sidelit daylit zones is less than 60 watts do not require automatic daylighting controls in the daylit… EXCEPTION 7 5 to Section 160.5(b)4D: Rooms that have a total glazing area of less than 24 square feet, or parking garage areas with a combined total of less than 36 square feet of glazing or opening. EXCEPTION 8 6 to Section 160.5(b)4D: For parking garages, luminaires located in the daylight adaptation zone and luminaires for only dedicated ramps. Daylight adaptation zone and dedicated ramps are defined in Section 100.1. |
| 502 | EXCEPTION 9 7 to Section 160.5(b)4D: Luminaires in sidelit daylit zones in retail merchandise sales and wholesale showroom areas. E. Demand Responsive Controls. See Section 110.12 for requirements for demand responsive lighting controls. F. Control Interactions. Each lighting control installed to comply with Section 160.5(b)4 shall permit or incorporate the functions of the other lighting controls required by this Section. i. For general lighting, the manual area control shall permit the level or amount of light provided while the lighting is on to be set or adjusted by the controls specified in Sections 160.5(b)4B, C, D, and E. ii. The manual area control shall permit the shutoff control to turn the lighting down or off. iii. The multi-level lighting control shall permit the automatic daylighting control to adjust the electric lighting level in response to changes in the amount of daylight in the daylit zone. iv. The multi-level lighting control shall permit the demand responsive control to adjust the lighting during a demand response event and to return it to the level set by the multilevel control after the event. v. The shutoff control shall permit the manual area control to turn the lighting on. If the on request occurs while an automatic time switch control would turn the lighting off, then the on request shall be treated as an override request consistent wi… vi. The automatic daylighting control shall permit the multi-level lighting control to adjust the level of lighting. vii. For lighting controlled by multi-level lighting controls and by occupant sensing controls that provide an automatic-on function, the controls shall provide a partial-on function that is capable of automatically activating between 50-70 percent of… viii. (RESERVED) ix. For space conditioning system zones serving only spaces that are required to have occupancy sensing controls as specified in Section 160.5(b)4Cv, vi, and vii, and where Table 120.1-A allows the ventilation air to be reduced to zero when the space … |
| 503 | (c) Outdoor Lighting and Controls Equipment. Multifamily buildings shall comply with the applicable requirements of Sections 160.5(c)1 through 160.5(c)2. 1. Luminaire Shielding Requirements. All outdoor luminaires of 6,200 initial luminaire lumens or greater, shall comply with Backlight, Uplight, and Glare (BUG) (in accordance with ANSI/IES TM-15-20, Annex A) requirements in accordance with Title 24, P… EXCEPTION 1 to Section 160.5(c)1: Signs. EXCEPTION 2 to Section 160.5(c)1: Lighting for building facades, public monuments, public art, statues, and vertical surfaces of bridges. EXCEPTION 3 to Section 160.5(c)1: Lighting not permitted by a health or life safety statute, ordinance, or regulation to be a cutoff luminaire. EXCEPTION 4 to Section 160.5(c)1: Temporary outdoor lighting. EXCEPTION 5 to Section 160.5(c)1: Replacement of existing pole mounted luminaires in hardscape areas meeting all of the following conditions: A. Where the existing luminaire does not meet the luminaire BUG requirements in Section 160.5(c)1; and B. Spacing between existing poles is greater than six times the mounting height of the existing luminaires; and C. Where no additional poles are being added to the site; and D. Where new wiring to the luminaires is not being installed; and E. Provided that the connected lighting power wattage is not increased. |
| 504 | 2. Controls for Outdoor Lighting. Outdoor lighting shall be independently controlled from other electrical loads, and the controls for outdoor lighting shall meet the following functional requirements: EXCEPTION 1 to Section 160.5(c)2: Outdoor lighting not permitted by a health or life safety statute, ordinance, or regulation to be turned OFF or reduced. EXCEPTION 2 to Section 160.5(c)2: Lighting in tunnels required to be illuminated 24 hours per day and 365 days per year. A. Daylight Availability. All installed outdoor lighting shall be controlled by a photo control, astronomical time-switch control, or other control capable of automatically shutting OFF the outdoor lighting when daylight is available. B. Automatic Scheduling Controls. i. Automatic scheduling controls shall be installed for all outdoor lighting. Automatic scheduling controls may be installed in combination with motion sensing controls or other outdoor lighting controls. ii. Automatic scheduling controls shall be capable of reducing the outdoor lighting power by at least 60 50 percent and no more than 90 percent, and separately capable of turning the lighting OFF, during scheduled unoccupied periods. iii. Automatic scheduling controls shall allow scheduling of a minimum of two nighttime periods with independent lighting levels, and may include an override function that turns lighting ON during its scheduled dim or OFF state for no more than two ho… C. Motion Sensing Controls. i. Motion sensing controls shall be installed for the following luminaires. Motion sensing controls may be installed for other outdoor lighting and in combination with other outdoor lighting controls: a. Outdoor luminaires other thanother than those providing Building Façade, Ornamental Hardscape, or Outdoor Dining, where the bottom of luminaire is mounted 24 feet or less above grade or lower; and, b. Outdoor wall mounted luminaires installed for General Hardscape parking lot lighting, located within 1 mounting height of a parking space, mounted 24 feet or less above grade or lower. ii. Motion sensing controls shall be capable of reducing the outdoor lighting power of each controlled luminaire by at least 60 50 percent and no more than 90 percent, and separately capable of turning the luminaire OFF, during unoccupied periods. iii. Motion sensing controls shall be capable of reducing the lighting to its dim or OFF state no longer than 15 minutes after the area has been vacated, and of returning the lighting to its ON state when the area becomes occupied. iv. No more than 1,500 watts of lighting power shall be controlled by a single sensor or as a single zone. EXCEPTION 1 to Section 160.5(c)2C: Luminaires with a maximum rated wattage of 40 watts each are not required to have motion sensing controls. EXCEPTION 2 to Section 160.5(c)2C: Applications listed as Exceptions to Section 170.2(e)2A are not required to have motion sensing controls. EXCEPTION 3 to Section 160.5(c)2C: Lighting subject to a health or life safety statute, ordinance, or regulation may have a minimum time-out period longer than 15 minutes or a minimum dimming level above 50 percent when necessary to comply with the ap… |
| 505 | EXCEPTION 4 to Section 160.5(c)2C: For parking lots, luminaires with a maximum rated wattage of 78 watts each are not required to have motion sensing controls. (d) Sign Lighting Controls. All sign lighting shall meet the requirements below as applicable: 1. Indoor Signs. All indoor sign lighting other than exit sign lighting shall be controlled with an automatic time-switch control or astronomical time-switch control. 2. Outdoor Signs. Outdoor sign lighting shall meet the following requirements as applicable: A. All outdoor sign lighting shall be controlled with a photocontrol in addition to an automatic time-switch control, or an astronomical time-switch control. EXCEPTION to Section 160.5(d)2A: Outdoor signs in tunnels, and signs in large permanently covered outdoor areas that are intended to be continuously lit, 24 hours per day and 365 days per year. B. All outdoor sign lighting that is ON both day and night shall be controlled with a dimmer that provides the ability to automatically reduce sign lighting power by a minimum of 65 percent during nighttime hours. Signs that are illuminated at night a… EXCEPTION to Section 160.5(d)2B: Outdoor signs in tunnels and large covered areas that are intended to be illuminated both day and night. 3. Demand Responsive Electronic Message Center (EMC) Control. See Section 110.12 for requirements for demand responsive EMC controls. (e) Lighting Control Acceptance and Installation Certificate Requirement. Multifamily common services areas shall comply with the applicable requirements of Sections 160.5(e)1 through 160.5(e)3. 1. Lighting Control Acceptance Requirements. Before an occupancy permit is granted, indoor and outdoor lighting controls serving the building, area, or site and installed to comply with Section 160.5(b)4D, 160.5(b)4C, 160.5(b)4E, 160.5(c)2, or 170.2(e… A. RESERVED; B. RESERVED; C. Automatic daylight controls shall be tested in accordance with Reference Nonresidential Appendix NA7.6.1; D. Lighting shut-OFF controls shall be tested in accordance with Reference Nonresidential Appendix NA7.6.2; E. Demand responsive lighting controls shall be tested in accordance with Reference Nonresidential Appendix NA7.6.3; and F. Outdoor lighting controls shall be tested in accordance with Reference Nonresidential Appendix NA7.8; and G. Lighting systems receiving the Institutional Tuning Power Adjustment Factor shall be tested in accordance with Reference Nonresidential Appendix NA 7.6.4. 2. Lighting Control Installation Certificate Requirements. To be recognized for compliance with Part 6 an Installation Certificate shall be submitted in accordance with Section 10-103(a) for any lighting control system, Energy Management Control Syste… |
| 506 | A. Certification that when a lighting control system is installed to comply with lighting control requirements in Part 6 it complies with the applicable requirements of Section 110.9; and complies with Reference Nonresidential Appendix NA7.7.1. B. Certification that when an Energy Management Control System is installed to function as a lighting control required by Part 6 it functionally meets all applicable requirements for each application for which it is installed, in accordance with Secti… C. Certification that interlocked lighting systems used to serve an approved area comply with Section 170.2(e)1A2A; and comply with Reference Nonresidential Appendix NA7.7.4. D. Certification that lighting controls installed to earn a lighting Power Adjustment Factor (PAF) comply with Section 170.2(e)1B2B; and comply with Reference Nonresidential Appendix NA7.7.5. E. Certification that additional lighting wattage installed for a videoconference studio complies with Section 170.2(e)1CifVI; and complies with Reference Nonresidential Appendix NA7.7.6RESERVED. 3. When certification is required by Title 24, Part 1, Section 10-103.1, the acceptance testing specified by Section 160.5(e) shall be performed by a Certified Lighting Controls Acceptance Test Technician (CLCATT). If the CLCATT is operating as an e… |
| 507 | Section 160.6 – Mandatory Requirements for Electric Power Distribution Systems (a) Service Electrical Metering. Each electrical service or feeder that provides power to the common use areas (interior and exterior) shall have a permanently installed metering system which measures electrical energy use in accordance with TABLE 160… EXCEPTION to Section 160.6(a): Service or feeder for which the utility company provides a metering system for the multifamily building that indicates instantaneous kW demand and kWh for a utility-defined period. (b) Separation of Electrical Circuits for Electrical Energy Monitoring. Electrical power distribution systems shall be designed so that measurement devices can monitor the electrical energy usage of load types according to TABLE 160.6-B. |
| 508 | (c) Voltage Drop. The maximum combined voltage drop on both installed feeder conductors and branch circuit conductors to the farthest connected load or outlet shall not exceed 5 percent. (d) Circuit Controls for 120-Volt Receptacles and Controlled Receptacles. In all common services areas, both controlled and uncontrolled 120 volt receptacles shall be provided in office areas, lobbies, conference rooms, kitchen areas in office spaces,… 1. Install a control capable of automatically shutting OFF the controlled receptacles when the space is typically unoccupied, either at the receptacle or circuit level. When an automatic time switch control is installed it shall incorporate an overrid… 2. Install at least one controlled receptacle within 6 feet from each uncontrolled receptacle, or install a splitwired receptacle with at least one controlled and one uncontrolled receptacle. Where receptacles are installed in modular furniture in ope… |
| 509 | 3. Provide a permanent and durable marking for controlled receptacles or circuits to differentiate them from uncontrolled receptacles or circuits; and A. Receptacles specifically for refrigerators and water dispensers in kitchen areas. B. Receptacles located a minimum of six feet above the floor that are specifically for clocks. C. Receptacles for network copiers, fax machines, A/V and data equipment other than personal computers in copy rooms. D. Receptacles on circuits rated more than 20 amperes. E. Receptacles connected to an uninterruptible power supply (UPS) that are intended to be in continuous use, 24 hours per day/365 days per year, and are marked to differentiate them from other uncontrolled receptacles or circuits. F.(e) Demand responsive controls and equipment. See Section 110.12 for requirements for demand responsive controls and equipment. |
| 510 | Section 160.7 – Mandatory Requirements for Covered Processes (a) Elevators. Elevators shall meet the requirements of section 120.6(f). (b) Pool and spa systems. Pool and spa systems available to multiple tenants or to the public shall comply with the applicable requirements of Section 110.4. Pool and spa systems installed for exclusive use by a single tenant shall comply with the app… |
| 511 | SECTION 160.8 – MANDATORY REQUIREMENTS FOR SOLAR READY BUILDINGS (a) Solar Ready Buildings. Newly constructed multifamily buildings shall meet the requirements of Section 110.10 applicable to the building project. |
| 512 | SECTION 160.9 – MANDATORY REQUIREMENTS FOR electric READY BUILDINGS |
| 515 | 2022 P6 S170 SUBCHAPTER 11 MULTIFAMILY BUILDINGS – PERFORMANCE AND PRESCRIPTIVE COMPLIANCE APPROACHES Section 170.0 – General (a) Multifamily buildings shall meet all of the following: 1. The applicable requirements of Sections 110.0 through 110.10. 2. The applicable requirements of Section 160.0 (mandatory features). 3. Either the performance Standards (170.1) or the prescriptive Standards (170.2) set forth in this Subchapter for the Climate Zone in which the building is located. Climate zones are shown in Reference Joint Appendix JA2 – Weather/Climate Data. |
| 516 | Section 170.1 – Performance Approach (a) Energy Budget for the Standard Design Building. The energy budget for the Standard Design Building is expressed in terms of source energy and time-dependent valuation (TDV) energy, and they are determined by applying the mandatory and prescriptive… (b) Energy Budget for the Proposed Design Building. The energy budget for a Proposed Design Building is expressed in terms of source energy and time-dependent valuation (TDV) energy, and they are determined by calculating the source energy and TDV ene… (c) Calculation of Energy Budget. The TDV energy for both the Standard Design Building and the Proposed Design Building shall be computed by Compliance Software certified for this use by the Commission. The processes for Compliance Software approval b… (d) Compliance Demonstration Requirements for Performance Standards. 1. Certificate of Compliance and Application for a Building Permit. The application for a building permit shall include documentation pursuant to Sections 10-103(a)1 and 10-103(a)2 which demonstrates, using an approved calculation method, that the bui… 2. Field Verification of Individual Dwelling Unit Systems. When performance of installed features, materials, components, manufactured devices or systems above the minimum specified in Section 170.2 is necessary for the building to comply with Section… A. EER/EER2/SEER/SEER2/CEER/HSPF/HSPF2 Rating. When performance compliance requires installation of a space conditioning system with a SEER rating that is greater than the minimum SEER rating required by TABLE 170.2-K or specified for the standard des… B. Variable Capacity Heat Pump (VCHP) Compliance Option. When performance compliance requires installation of a heat pump system that meets all the requirements of the VCHP compliance option specified in the ACM Reference Manual, the system shall be f… |
| 517 | C. Low Leakage Air Handler. When performance compliance requires installation of a low leakage air-handling unit, the installed air handling unit shall be field verified in accordance with the procedures specified in Reference Residential Appendix RA3… D. HSPF RatingRESERVED. When performance compliance requires installation of a heat pump system with an HSPF rating that is greater than the minimum HSPF rating required in Table170.2-H the installed system shall be field verified in accordance with t… E. Heat Pump – Rated Heating Capacity. When performance compliance requires installation of a heat pump system, the heating capacity values at 47 degrees F and 17 degrees F shall be field verified in accordance with the procedures specified in Referen… F. Whole House Fan. When performance compliance requires installation of a whole-house fan, the whole house fan ventilation airflow rate and fan efficacy shall be field verified in accordance with the procedures in Reference Residential Appendix RA3.9. G. Central Fan Ventilation Cooling System. When performance compliance requires installation of a central fan ventilation cooling system, the installed system shall be field verified in accordance with the procedures in Reference Residential Appendix … H. Dwelling Unit Enclosure Air Leakage. When performance compliance requires a building enclosure leakage rate that is lower than the standard design, the building enclosure shall be field verified in accordance with the procedures specified in Refere… I. Quality Insulation Installation (QII). When performance compliance requires field verification of QII, the building insulation system shall be field verified in accordance with the procedures in Reference Residential Appendix RA3.5. J. Pre-Cooling. When performance compliance requires field verification of the installation and programming of a Pre-Cooling Thermostat, it shall be field verified in accordance with the procedures in Reference Residential Appendix RA3.4.5. |
| 518 | Section 170.2 – Prescriptive Approach (a) Envelope Component Requirements. 1. Exterior roofs and ceilings. Exterior roofs and ceilings shall comply with each of the applicable requirements in this subsection: A. Roofing Products. All roofing products shall meet the requirements of Section 110.8 and the applicable minimum aged solar reflectance and thermal emittance requirements of Table 170.2-A. B. Roof Insulation. Roofs shall have an overall assembly U-factor no greater than the applicable value in TABLE 170.2-A, meeting option i, ii, iii, or iv below. Where required by Section 110.8 and 160.1(a), insulation shall be placed in direct contact… i. Option A: RESERVED ii. Option B: A minimum R-value of insulation installed between the roof rafters in contact with the roof deck and an additional layer of ceiling insulation located between the attic and the conditioned space when meeting Section 170.2(c)3Biia; or iii. Option C: A minimum R-value of ceiling insulation located between the attic and the conditioned space when meeting Section 170.2(c)3Biib. iv. Option D: A minimum U-factor for roof assemblies above conditioned space without attic space. C. Radiant Barrier. A radiant barrier required in TABLE 170.2-A shall meet the requirements specified in Section 110.8(j), and shall meet the installation criteria specified in the Reference Residential Appendix RA4. 2. Wall Insulation A. Exterior walls shall have an overall assembly U-factor no greater than the applicable value in TABLE 170.2-A. B. Demising walls shall meet the requirements of 160.1(b)7. Vertical windows in demising walls between conditioned and unconditioned spaces shall have an area-weighted average U-factor no greater than the applicable value in TABLE 170.2-A. 3. Fenestration. A. Vertical fenestration and glazed doors in exterior walls shall comply with subsections i, ii, and iii: i. Percent fenestration area shall be limited in accordance with the applicable requirements of a and b below: a. A total fenestration area no greater than 20 percent of the conditioned floor area; and b. A total fenestration area no greater than 40 percent of the gross exterior wall area. NOTE: Demising walls are not exterior walls, and therefore demising wall area is not part of the gross exterior wall area, and fenestration in demising walls are not part of the fenestration area limitation. |
| 519 | ii. Fenestration Properties. Installed fenestration products, including glazed doors, shall have an area-weighted average U-factor, Relative Solar Heat Gain Coefficient (RSHGC), and Visual Transmittance (VT) meeting the applicable fenestration values … Vertical fenestration in demising walls between conditioned and unconditioned spaces are only required to comply with the area-weighted average U-factor requirement in TABLE 170.2-A. EXCEPTION 1 to Section 170.2(a)3Aii: For each dwelling unit, up to 3 square feet of new glazing area installed in doors shall not be required to meet the U-factor and RSHGC requirements of TABLE 170.2-A. EXCEPTION 2 to Section 170.2(a)3Aii: For fenestration containing chromogenic type glazing: a. The lower-rated labeled U-factor and SHGC shall be used with automatic controls to modulate the amount of solar gain and light transmitted into the space in multiple steps in response to daylight levels or solar intensity; b. Chromogenic glazing shall be considered separately from other fenestration; and c. Area-weighted averaging with other fenestration that is not chromatic shall not be permitted and shall be determined in accordance with Section 110.6(a). EXCEPTION 3to Section 170.2(a)3Aii: For dwelling units containing unrated site-built fenestration that meets the maximum area restriction, the U-factor and SHGC can be determined in accordance with the Nonresidential Reference Appendix NA6 or use defa… iii. Shading. Where Table 170.2-A requires a maximum RSHGC, the requirements shall be met with an area-weighted average RSHGC excluding the effects of interior shading, no greater than the applicable value in Table 170.2-A. For the purposes of this paragraph, the RSHGC of a vertical window is: a. The Solar Heat Gain Coefficient of the window; or b. Relative Solar Heat Gain Coefficient is calculated using EQUATION 170.2-A, if the window has an overhang that extends beyond each side of the window jamb by a distance equal to the overhang’s horizontal projection. EXCEPTION 1 to Section 170.2(a)3Aiiib: An area-weighted average Relative Solar Heat Gain Coefficient of 0.56 or less shall be used for windows: I. That are in the first story of exterior walls that form a display perimeter; and II. For which codes restrict the use of overhangs to shade the windows. EXCEPTION 2 to Section 170.2(a)3Aiiib: For vertical glazing containing chromogenic type glazing: I. the lower-rate labeled RSHGC shall be used with automatic controls to modulate the amount of heat flow into the space in multiple steps in response to daylight levels or solar intensity; and II. chromogenic glazing shall be considered separately from other glazing; and III. area-weighted averaging with other glazing that is not chromogenic shall not be permitted. NOTE: Demising walls are not exterior walls, and therefore fenestration in demising walls are not subject to SHGC requirements. |
| 520 | iv. Vertical fenestration shall have an area-weighted average Visible Transmittance (VT) no less than the applicable value in TABLE 170.2-A, or EQUATION 170.2-B, as applicable. EXCEPTION 1 to Section 170.2(a)3Aiv: When the window’s primary and secondary sidelit daylit zones are completely overlapped by one or more skylit daylit zones, then the window need not comply with Section 170.2(a)3Aivw. EXCEPTION 2 to Section 170.2(a)3Aiv: If the window’s VT is not within the scope of NFRC 200, or ASTM E972, then the VT shall be calculated according to Reference Nonresidential Appendix NA6. EXCEPTION 3 to Section 170.2(a)3Aiv: For vertical windows containing chromogenic type glazing: a. The higher rated labeled VT shall be used with automatic controls to modulate the amount of light transmitted into the space in multiple steps in response to daylight levels or solar intensity; b. Chromogenic glazing shall be considered separately from other glazing; and c. Area-weighted averaging with other glazing that is not chromogenic shall not be permitted. NOTE: Demising walls are not exterior walls, and therefore windows in demising walls are not subject to VT requirements. B. Skylights shall: i. Have an area no greater than 5 percent of the gross exterior roof area Skylight Roof Ratio (SRR); and EXCEPTION 1 to Section 170.2(a)3Bi: Buildings with an atria over 55 feet high shall have a skylight area no greater than 10 percent of the gross exterior roof area. |
| 521 | ii. Have an Area-Weighted Performance Rating U-factor no greater than the applicable value in TABLE 170.2-A. EXCEPTION 2 to Section 170.2(a)3Bii: For each dwelling unit up to 16 square feet of new skylight area with a maximum U-factor of 0.55 and a maximum SHGC of 0.30. iii. Solar Heat Gain Coefficient. Have an area-weighted performance rating Solar Heat Gain Coefficient no greater than the applicable value in TABLE 170.2-A. EXCEPTION to Section 170.2(a)3Bii and 170.2(a)3Biii: For skylights containing chromogenic type glazing: a. the lower-rated labeled SHGC shall be used with automatic controls to modulate the amount of heat flow into the space in multiple steps in response to daylight levels or solar intensity; and b. chromogenic glazing shall be considered separately from other glazing; and c. area-weighted averaging with other glazing that is not chromogenic shall not be permitted. iv. Haze Value. Have a glazing material or diffuser that has a measured haze value greater than 90 percent, determined according to ASTM D1003, or other test method approved by the Energy Commission. EXCEPTION to Section 170.2(a)3Biv: Skylights designed and installed to exclude direct sunlight entering the occupied space by the use of fixed or automated baffles or the geometry of the skylight and light well. 4. All exterior doors, excluding glazed doors, that separate conditioned space from unconditioned space or from ambient air shall have a U-factor not greater than the applicable value in TABLE 170.2-A. Glazed doors must comply with the requirements of… 5. Floors shall meet the following requirements: A. Raised-floors shall be insulated such that the floor assembly has an assembly U-factor equal to or less than shown in TABLE 170.2-A, or shall be insulated between wood framing with insulation having an R-value equal to or greater than shown in TABL… B. All buildings with three habitable stories or fewer shall have slab floor perimeter insulation installed with a U-factor equal to or less than or R-value equal to or greater than shown in Table 170.2-A. The minimum depth of concrete slab floor per… EXCEPTION to Section 170.2(a)5: Raised-floor insulation may be omitted if the foundation walls are insulated to meet the wall insulation minimums shown in TABLE 170.2-A. 6. All buildings up to three habitable stories shall comply with the Quality Insulation Installation (QII) requirements shown in TABLE 170.2-A. When QII is required, insulation installation shall meet the criteria specified in Reference Appendix RA3.5. |
| 526 | (b) Minimum Daylighting Requirement for Large Enclosed Spaces. In Climate Zones 2 through 15, conditioned enclosed spaces, and unconditioned enclosed spaces, that are greater than 5,000 ft² and that are directly under a roof with ceiling heights great… 1. A combined total of at least 75 percent of the floor area, as determined in building floor plan (drawings) view, shall be within one or more of the following: A. Primary Sidelight Daylight Zone in accordance with Section 160.5(b)4Dib, or B. The total floor area in the space within a horizontal distance of 0.7 times the average ceiling height from the edge of rough opening of skylights. 2. All Skylit Daylit Zones and Primary Sidelit Daylit Zones shall be shown on building plans. 3. General lighting in daylit zones shall be controlled in accordance with Section 160.5(b)4D. 4. The total skylight area is at least 3 percent of the total floor area in the space within a horizontal distance of 0.7 times the average ceiling height from the edge of rough opening of skylights; or the product of the total skylight area and the a… 5. All skylights shall have a glazing material or diffuser that has a measured haze value greater than 90 percent, tested according to ASTM D1003 (notwithstanding its scope) or another test method approved by the Commission. EXCEPTION 1 to Section 170.2(b): In buildings with unfinished interiors, future enclosed spaces for which there are plans to have: (c) Space Conditioning Systems. All space heating, space cooling, and ventilation equipment shall comply with minimum Appliance Efficiency Regulations as specified in Sections 110.0 through 110.2 and the applicable requirements of Subsections 1 throug… 1. Sizing and Equipment Selection – Common Use Areas. Mechanical heating and mechanical cooling equipment serving common use areas of multifamily buildings, shall be the smallest size, within the available options of the desired equipment line, necess… EXCEPTION 1 to Section 170.2(c)1: Where it can be demonstrated to the satisfaction of the enforcing agency that oversizing will not increase building TDV energy use. EXCEPTION 2 to Section 170.2(c)1: Standby equipment with controls that allow the standby equipment to operate only when the primary equipment is not operating. EXCEPTION 3 to Section 170.2(c)1: Multiple units of the same equipment type, such as multiple chillers and boilers, having combined capacities exceeding the design load, if they have controls that sequence or otherwise optimally control the operation … 2. Calculations – Common Use Areas. In making equipment sizing calculations under Subsection (c)1, all of the following rules shall apply: A. Heating and cooling loads. Heating and cooling system design loads shall be determined in accordance with |
| 527 | the method in the 2017 ASHRAE Handbook, Fundamentals Volume, or as specified in a method approved by the Commission. B. Indoor design conditions. Indoor design temperature and humidity conditions for comfort applications shall be determined using ASHRAE Standard 55 or the 2017 ASHRAE Handbook, Fundamentals Volume, except that winter humidification and summer dehumid… C. Outdoor design conditions. Outdoor design conditions shall be in accordance with the design conditions from Reference Joint Appendix JA2, which is based on data from the ASHRAE Climatic Data for Region X. Heating design temperatures shall be no low… EXCEPTION to Section 170.2(c)12C: Cooling design temperatures for cooling towers shall be no greater than the 0.5 percent Cooling Design Wet bulb values. D. Ventilation. Outdoor air ventilation loads shall be calculated using the ventilation rates required in Section 160.2(c)3. E. Envelope. Envelope heating and cooling loads shall be calculated using envelope characteristics, including square footage, thermal conductance, Solar Heat Gain Coefficient or shading coefficient, and air leakage, consistent with the proposed design. F. Lighting. Lighting heating and cooling loads shall be based on actual design lighting levels or power densities as specified in Section170.2(e)1. G. People. Occupant density shall be based on the expected occupancy of the building and shall be the same as determined under Section 160.2(c)3A, if used. Sensible and latent heat gains shall be as listed in the 2017 ASHRAE Handbook- Fundamentals, Ch… H. Process loads. Loads caused by a process shall be based upon actual information on the intended use of the building. I. Miscellaneous equipment. Equipment loads other than process loads shall be calculated using design data compiled from one or more of the following sources: i. Actual information based on the intended use of the building; or ii. Published data from manufacturer’s technical publications or from technical societies, such as the ASHRAE Handbook, Applications Volume; or iii. Other data based on the designer’s experience of expected loads and occupancy patterns. J. Internal heat gains. Internal heat gains may be ignored for heating load calculations. K. Safety factor. Calculated design loads based on Sections 170.2(c)2A through K may be increased by up to 10 percent to account for unexpected loads or changes in space usage. L. Other loads. Loads such as warm-up or cool-down shall be calculated from principles based on the thermal capacity of the building and its contents, the degree of setback, and desired recovery time; or may be assumed to be no more than 30 percent fo… 3. Dwelling Unit Space Conditioning Systems A. Heating System Type. Space conditioning systems with direct expansion cooling serving individual dwelling units shall meet i, or ii, or shall meet the performance compliance requirements of 170.1. Systems that cannot meet the requirements of i or i… i. Multifamily Buildings three habitable stories or less. For climate zones 1 through 15, the space conditioning system shall be a heat pump. For climate zones 16, the space conditioning system shall be an air conditioner with furnace. Additionally, b… |
| 528 | EXCEPTION to Section 170.2(c)3A: A supplemental heating unit may be installed in a space served directly or indirectly by a primary heating system, provided that the unit thermal capacity does not exceed 2 kW or 7,000 Btu/hr and is controlled by a tim… i. Refrigerant Charge – Systems Serving Individual Dwelling Units. When refrigerant charge verification or fault indicator display is shown as required by TABLE 170.2-K, the system shall comply with either 170.2(c), 170.2(c)3Bia or 170.2(c)170.2(c)3Bib: a. Air-cooled air conditioners and air-source heat pumps, including but not limited to ducted split systems, ducted packaged systems, small duct high velocity systems, and mini-split systems, shall comply with subsections I, II and III, unless the sys… I. Have measurement access holes (MAH) installed according to the specifications in the Reference Residential Appendix Section RA3.2.2.3; and II. System airflow rate in accordance with subsection A or B below, shall be confirmed through field verification and diagnostic testing in accordance with all applicable procedures specified in Reference Residential Appendix Section RA3. 3 or an appr… A. For small duct high velocity systems, the system airflow rate shall be greater than or equal to 250 cfm per ton; or B. For all other air-cooled air conditioner or air-source heat pump systems, the system airflow rate shall be greater than or equal to 350 cfm per ton. III. The installer shall charge the system according to manufacturer’s specifications. Refrigerant charge shall be verified according to one of the following options, as applicable: A. The installer and rater shall perform the standard charge procedure as specified by Reference Residential Appendix Section RA3.2.2 or an approved alternative procedure as specified by RA1; or B. The system shall be equipped with a fault indicator display (FID) device that meets the specifications of Reference Joint Appendix JA6. The installer shall verify the refrigerant charge and FID device in accordance with the procedures in Reference … C. The installer shall perform the weigh-in charging procedure as specified by Reference Residential Appendix Section RA3.2.3.1 provided the system is of a type that can be verified using the RA3.2.2 standard charge verification procedure and RA3.3 ai… EXCEPTION to Section 170.2(c)3BiaI: Systems that cannot conform to the specifications for hole location in Reference Residential Appendix Figure RA3.2-1, shall not be required to provide holes as described in Figure RA3.2-1. |
| 529 | EXCEPTION to Section 170.2(c)3BiaII: Standard ducted systems without zoning dampers may comply with the minimum airflow rate by meeting the applicable requirements in TABLE 160.3-A and TABLE 160.3-B as confirmed by field verification and diagnostic te… EXCEPTION to Section 170.2(c)3BiaIII: When the outdoor temperature is less than 55 degrees F and the installer utilizes the weigh-in charging procedure in Reference Residential Appendix Section RA3.2.3.1 to verify the refrigerant charge, the installer… b. For air-cooled air conditioners and air-source heat pumps, including but not limited to ducted split systems, ducted packaged systems, small duct high velocity systems and mini-split systems, which are of a type that cannot comply with the requirem… I. The installer shall confirm the refrigerant charge using the weigh-in charging procedure specified in Reference Residential Appendix Section RA3.2.3.1, as verified by a HERS Rater according to the procedures specified in Reference Residential Appen… II. Systems that utilize forced air ducts shall comply with the minimum system airflow rate requirement in Section 170.2(c)3BiaII provided the system is of a type that can be verified using the procedures in RA3.3 or an approved alternative procedure … EXCEPTION 1 to Section 170.2(c)3Bi: Packaged systems for which the manufacturer has verified correct system refrigerant charge prior to shipment from the factory are not required to have refrigerant charge confirmed through field verification and diag… EXCEPTION 2 to Section 170.2(c)3Bi: The HERS Rater field verification and HERS Provider data registry requirements of Reference Residential Appendix RA2 and RA3 are not required for multifamily dwelling units in buildings four habitable stories and gr… ii. Space Conditioning Distribution Systems. All space conditioning systems shall meet all applicable requirements of a or b below: a. High performance attics. Air handlers or ducts are allowed to be in ventilated attic spaces when the roof and ceiling insulation level meet Option B in TABLE 170.2-KA. b. Duct and air handlers located in conditioned space. Duct systems and air handlers of HVAC systems shall be located in conditioned space, and confirmed by field verification and diagnostic testing to meet the criterion of Reference Residential Appen… NOTE: Gas heating appliances installed in conditioned spaces must meet the combustion air requirements of the California Mechanical Code Chapter 7, as applicable. iii. Central Fan Integrated Ventilation Systems – Systems Serving Individual Dwelling Units. Central forced air system fans used to provide outside air, shall have an air-handling unit fan efficacy less than or equal to the maximum W/cfm specified in … |
| 530 | a. 0.45 W/cfm for gas furnace air-handling units; or b. 0.58 W/cfm for air-handling units that are not gas furnaces. iv. Balanced Ventilation Systems.ERV or HRV. When balanced ventilation systems areis used to meet Section 160.2(b)2Aivb, they shall meet the applicable requirements of a, b, or c below: in Climate Zones 1, 2, and 11-16, the ventilation system shall be… a. a. In Climate Zones 1, 2, and 11-16, balanced ventilation systems serving individual dwelling units shall: 1. Be Aan energy recovery ventilator (ERV) or heat recovery ventilator (HRV), serving one individual dwelling unit shall 2. have Have a minimum sensible recovery efficiency of 67 percent, rated at 32 degrees Fahrenheit (0 degrees Celsius), and 3. Have a minimum fan efficacy of less than or equal to 0.6 W per cfm. as These measures shall be confirmed through HERS field verification in accordance with the procedures in RA3.7.4.4 for buildings with three habitable stories or less, or the procedures in NA2.2.4.1.5 for buildings with four or more habitable stories. b. b. In Climate Zones 1, 2, and 11-16, balanced ventilation systems serving multiple dwelling units in Bbuildings with four or more habitable stories shall: 1. Be with an ERV or HRV, serving multiple dwelling units shall be field verified in accordance with NA7.18.4 and confirm 2. Have a minimum sensible recovery efficiency or effectiveness of 67 percent, rated at 32 degrees Fahrenheit (0 degrees Celsius), 3. Meet the fan power meeting the requirements ofin Section 170.2(c)4A, and 4. Have recovery bypass or free cooling control capabilities to directly economize with ventilation air based on outdoor air temperature limits that meet the requirements specified in Table 170.2-G. These measures shall be filed verified in accordance with NA7.18.4. c. In buildings with three habitable stories or less in Climate Zones 4-10, when a heat pump space conditioning system is installed to meet the requirements of Section 170.2(c)3Ai, balanced ventilation systems without an ERV or HRV shall have a fan ef… EXCEPTION to Section 170.2(c)3B: The HERS Rater field verification and HERS Provider data registry requirements of Reference Residential Appendix RA2 and RA3 are not required for multifamily dwelling units in buildings four habitable stories and great… C. HVAC System Bypass Ducts. Bypass ducts that deliver conditioned supply air directly to the space conditioning system return duct airflow shall not be used. 4. Common Use Area Space Conditioning Systems. A building complies with this section by being designed with and having constructed and installed a space-conditioning system that meets the applicable requirements of Subsections A through M. A. Fan Systems. Each fan system moving air into, out of, or between spaces or circulating air for the purpose of conditioning air within a space shall meet the requirements of Items i, ii, and iii below. |
| 531 | i. Fan Power Budget. For each fan system that includes at least one fan or fan array with fan electrical input power ≥ 1 kW, fan system electrical input power (Fan kWdesign,system) determined per Section 170.2(c)4Aib at the fan system design airflow d… a. Calculation of Fan Power Budget (Fan kWbudget). For each fan system: I. Determine the fan system airflow and choose the appropriate table(s) for fan power allowance. A. For single-cabinet fan systems, use the fan system airflow and the power allowances in both Tables 170.2-B and Table 170.2-C. B. For supply-only fan systems, use the fan system airflow and power allowances in Table 170.2-B. C. For relief fan systems, use the design relief airflow and the power allowances in Table 170.2-C. D. For exhaust, return, and transfer fan systems, use the fan system airflow and the power allowances in Table 170.2-C. E. For complex fan systems, separately calculate the fan power allowance for the supply and return/exhaust systems and sum them. For the supply airflow, use supply airflow at the fan system design conditions, and the power allowances in Table 170.2-B…. II. For each fan system determine the components included in the fan system and sum the Fan Power Allowances of those components. All fan systems shall include the System Base Allowance. If, for a given component, only a portion of the fan system airf… III. Multiply the fan system airflow by the sum of the fan power allowances for the fan system. IV. Divide by 1000 to convert to Fan kWbudget. V. For building sites at elevations greater than 3,000 feet, multiply Fan kWbudget by Correction Factor in Table 170.2-D. b. Determining Fan System Electrical Input Power (Fan kWdesign,system). Fan kWdesign,system is the sum of Fan kWdesign for each fan or fan array included in the fan system with Fan kWdesign ≥ 1 kW. If variable speed drives are used their efficiency lo… I. Use the default Fan kWdesign in Table 170.2-E for one or more of the fans. This method cannot be used for complex fan systems. |
| 532 | II. Use the Fan kWdesign at fan system design conditions provided by the manufacturer of the fan, fan array, or equipment that includes the fan or fan array calculated per a test procedure included in USDOE 10 CFR Part 430, USDOE 10 CFR Part 431, ANSI… III. Use the Fan kWdesign provided by the manufacturer, calculated at fan system design conditions per one of the methods listed in section 5.3 of ANSI/AMCA 208-2018. IV. Determine the Fan kWdesign by using the maximum electrical input power provided on the motor nameplate. ii. Variable air volume (VAV) systems. a. Static Pressure Sensor Location. Static pressure sensors used to control variable air volume fans shall be placed in a position such that the controller set point is no greater than one-third the total design fan static pressure, except for systems… b. Setpoint Reset. For systems with direct digital control of individual zone boxes reporting to the central control panel, static pressure setpoints shall be reset based on the zone requiring the most pressure; i.e., the set point is reset lower unti… iii. Fractional HVAC Motors for Fans. HVAC motors for fans that are less than1 hp and 1/12 hp or greater shall be electronically-commutated motors or shall have a minimum motor efficiency of 70 percent when rated in accordance with NEMA Standard MG 1-… EXCEPTION 1 to 170.2(c)4A: fan system power caused solely by process loads. |
| 538 | B. Space-conditioning Zone Controls. Each space-conditioning zone shall have controls designed in accordance with i or ii: i. Each space-conditioning zone shall have controls that prevent: a. Reheating; and b. Recooling; and |
| 539 | c. Simultaneous provisions of heating and cooling to the same zone, such as mixing or simultaneous supply of air that has been previously mechanically heated and air that has been previously cooled either by cooling equipment or by economizer systems; or ii. Zones served by variable air-volume systems that are designed and controlled to reduce, to a minimum, the volume of reheated, recooled, or mixed air are allowed only if the controls meet all of the following requirements: a. For each zone with direct digital controls (DDC), the volume of primary air that is reheated, recooled or mixed air supply shall not exceed the larger of: I. 50 percent of the peak primary airflow; or II. The design zone outdoor airflow rate as specified by Section 160.2(c)3. b. The volume of primary air in the deadband shall not exceed the design zone outdoor airflow rate as specified by Section 160.2(c)3. c. The first stage of heating consists of modulating the zone supply air temperature setpoint up to a maximum setpoint no higher than 95ºF while the airflow is maintained at the dead band flow rate. d. The second stage of heating consists of modulating the airflow rate from the dead band flow rate up to the heating maximum flow rate. e. For each zone without DDC, the volume of primary air that is reheated, re-cooled, or mixed air supply shall not exceed the larger of the following: I. 30 percent of the peak primary airflow; or II. The design zone outdoor airflow rate as specified by Section 160.2(c)3. EXCEPTION 1 to Section 170.2(c)4B: Zones with special pressurization relationships or cross-contamination control needs. EXCEPTION 2 to Section 170.2(c)4B: Zones served by space-conditioning systems in which at least 75 percent of the energy for reheating, or providing warm air in mixing systems, is provided from a site-recovered or site-solar energy source. EXCEPTION 3 to Section 170.2(c)4B: Zones in which specific humidity levels are required to satisfy exempt process loads. Computer rooms or other spaces where the only process load is from IT equipment may not use this exception. EXCEPTION 4 to Section 170.2(c)4B: Zones with a peak supply-air quantity of 300 cfm or less. C. Economizers. i. Each cooling air handler that has a design total mechanical cooling capacity over 33,000 Btu/hr, or chilled-water cooling systems without a fan or that use induced airflow that has a cooling capacity greater than the systems listed in TABLE 170.2-E… a. An air economizer capable of modulating outside-air and return-air dampers to supply 100 percent of the design supply air quantity as outside-air; or b. A water economizer capable of providing 100 percent of the expected system cooling load, at outside air temperatures of 50 F dry-bulb and 45 F wet-bulb and below. EXCEPTION 1 to Section 170.2(c)4Ci: Where special outside air filtration and treatment, for the reduction and treatment of unusual outdoor contaminants, makes compliance infeasible. EXCEPTION 2 to Section 170.2(c)4Ci: Where the use of outdoor air for cooling will affect other systems, such as humidification or dehumidification, so as to increase overall building TDV energy use. EXCEPTION 3 to Section 170.2(c)4Ci: Systems serving dwelling units. |
| 540 | EXCEPTION 4 to Section 170.2(c)4Ci: Where comfort cooling systems have the cooling efficiency that meets or exceeds the cooling efficiency improvement requirements in TABLE 170.2-F. EXCEPTION 5 to Section 170.2(c)4Ci: Fan systems primarily serving computer rooms. See Section 140.9(a) for computer room economizer requirements. |
| 541 | a If a unit is rated with an annualized or part-load metric, then to eliminate the required economizer, only the annualized or part-load minimum cooling efficiency of the unit must be increased by the percentage shown. If the unit is only rated with a… ii. If an economizer is required by Section 170.2(c)4Ci, and an air economizer is used to meet the requirement, then it shall be: a. Designed and equipped with controls so that economizer operation does not increase the building heating energy use during normal operation; and b. Capable of providing partial cooling even when additional mechanical cooling is required to meet the remainder of the cooling load. c. Designed and equipped with a device type and high limit shut off complying with TABLE 170.2-G. |
| 542 | b Devices with selectable (rather than adjustable) setpoints shall be capable of being set to within 2 F and 2 Btu/lb of the setpoint listed. iii. The air economizer and all air dampers shall have the following features: a. Warranty. 5-year Manufacturer warranty of economizer assembly. b. Damper reliability testing. Suppliers of economizers shall certify that the economizer assembly, including but not limited to outdoor air damper, return air damper, drive linkage, and actuator, have been tested and are able to open and close agains… c. Damper leakage. Economizer outdoor air and return air dampers shall have a maximum leakage rate of 10 cfm/sf at 250 Pascals (1.0 in. of water) when tested in accordance with AMCA Standard 500-D. The economizer outside air and return air damper leak… |
| 543 | d. Adjustable setpoint. If the high-limit control is fixed dry-bulb or fixed enthalpy + fixed dry-bulb then the control shall have an adjustable setpoint. e. Sensor accuracy. Outdoor air, return air, mixed air, and supply air sensors shall be calibrated within the following accuracies. I. Drybulb and wetbulb temperatures accurate to ±2 F over the range of 40 F to 80 F; II. Enthalpy accurate to ±3 Btu/lb over the range of 20 Btu/lb to 36 Btu/lb; III. Relative humidity (RH) accurate to ±5 percent over the range of 20 percent to 80 percent RH; f. Sensor calibration data. Data used for control of the economizer shall be plotted on a sensor performance curve. g. Sensor high limit control. Sensors used for the high limit control shall be located to prevent false readings, including but not limited to being properly shielded from direct sunlight. h. Relief air system. Relief air systems shall be capable of providing 100 percent outside air without over-pressurizing the building. iv. The space conditioning system shall include the following: a. Unit controls shall have mechanical capacity controls interlocked with economizer controls such that the economizer is at 100 percent open position when mechanical cooling is on and does not begin to close until the leaving air temperature is less … b. Direct Expansion (DX) units greater than 65,000 Btu/hr that control the capacity of the mechanical cooling directly based on occupied space temperature shall have a minimum of 2 stages of mechanical cooling capacity. c. DX units not within the scope of Section 170.2(c)4Ciib shall (i) comply with the requirements in TABLE 170.2-H, and (ii) shall have controls that do not false load the mechanical cooling system by limiting or disabling the economizer or by any othe… v. Systems that include a water economizer to meet Section 170.2(c)4Ci shall include the following: a. Maximum pressure drop. Precooling coils and water-to-water heat exchangers used as part of a water economizer shall either have a waterside pressure drop of less than 15 feet of water, or a secondary loop shall be installed so that the coil or heat… b. Economizer systems shall be integrated with the mechanical cooling system so that they are capable of providing partial cooling even when additional mechanical cooling is required to meet the remainder of the cooling load. Controls shall not false … |
| 544 | D. Supply Air Temperature Reset Controls. Space-conditioning systems supplying heated or cooled air to multiple zones shall include controls that automatically reset supply-air temperatures. Air distribution systems serving zones that are likely to ha… i. In response to representative building loads or to outdoor air temperature; and ii. At least 25 percent of the difference between the design supply-air temperature and the design room air temperature. EXCEPTION 1 to Section 170.2(c)4D: Systems that meet the requirements of Section 170.2(c)3Bi, without using Exception 1 to that section. EXCEPTION 2 to Section 170.2(c)4D: Where supply-air temperature reset would increase overall building energy use. EXCEPTION 3 to Section 170.2(c)4D: Systems supplying zones in which specific humidity levels are required to satisfy process loads. Computer Rooms or other spaces with only IT equipment may not use this exception. E. Electric Resistance Heating. Electric resistance heating systems shall not be used for space heating. EXCEPTION 1 to Section 170.2(c)4E: Where an electric-resistance heating system supplements a heating system in which at least 60 percent of the annual energy requirement is supplied by site-solar or recovered energy. EXCEPTION 2 to Section 170.2(c)4E: Where an electric-resistance heating system supplements a heat pump heating system, and the heating capacity of the heat pump is more than 75 percent of the design heating load calculated in accordance with Section 1… EXCEPTION 3 to Section 170.2(c)4E: Where the total capacity of all electric-resistance heating systems serving the entire building is less than 10 percent of the total design output capacity of all heating equipment serving the entire building. EXCEPTION 4 to Section 170.2(c)4E: Where the total capacity of all electric-resistance heating systems serving the entire building, excluding those allowed under Exception 2, is no more than 3 kW. EXCEPTION 5 to Section 170.2(c)4E: heating systems serving as emergency backup to gas heating equipment. F. Heat Rejection Systems. Heat rejection equipment used in comfort cooling systems such as air-cooled condensers, open cooling towers, closed-circuit cooling towers, and evaporative condensers shall include the following: i. Fan Speed Control. Each fan powered by a motor of 7.5 hp (5.6 kW) or larger shall have the capability to operate that fan at 2/3 of full speed or less, and shall have controls that automatically change the fan speed to control the leaving fluid tem… EXCEPTION 1 to Section 170.2(c)4Fi: Heat rejection devices included as an integral part of the equipment listed in TABLE 110.2-A through TABLE 110.2-NI. EXCEPTION 2 to Section 170.2(c)4Fi: Condenser fans serving multiple refrigerant circuits. EXCEPTION 3 to Section 170.2(c)4Fi: Condenser fans serving flooded condensers. EXCEPTION 4 to Section 170.2(c)4Fi: Up to one third of the fans on a condenser or tower with multiple fans where the lead fans comply with the speed control requirement. ii. Tower Flow Turndown. Open cooling towers configured with multiple condenser water pumps shall be designed so that all cells can be run in parallel with the larger of: a. The flow that is produced by the smallest pump; or b. 50 percent of the design flow for the cell. |
| 545 | iii. Limitation on Centrifugal Fan Cooling Towers. Open cooling towers with a combined rated capacity of 900 gpm and greater at 95 F condenser water return, 85 F condenser water supply, and 75 F outdoor wet-bulb temperature, shall use propeller fans a… EXCEPTION 1 to Section 170.2(c)4Fiii: Cooling towers that are ducted (inlet or discharge) or have an external sound trap that requires external static pressure capability. EXCEPTION 2 to Section 170.2(c)4Fiii: Cooling towers that meet the energy efficiency requirement for propeller fan towers in Section 110.2, TABLE 110.2-GF. iv. Multiple Cell Heat Rejection Equipment. Multiple cell heat rejection equipment with variable speed fan drives shall: a. Operate the maximum number of fans allowed that comply with the manufacturer’s requirements for all system components, and b. Control all operating fans to the same speed. Minimum fan speed shall comply with the minimum allowable speed of the fan drive as specified by the manufacture’s recommendation. Staging of fans is allowed once the fans are at their minimum operating… v. Cooling tower efficiency. Axial fan, open-circuit cooling towers serving condenser water loops for chilled water plants with a total of 900 gpm or greater, shall have a rated efficiency of no less than 60 gpm/hp when rated in accordance with the co… EXCEPTION 1 to Section 170.2(c)4Fv: Replacement of existing cooling towers that are inside an existing building or on an existing roof. EXCEPTION 2 to Section 170.2(c)4Fv: Cooling towers serving buildings in Climate Zone 1 or 16. G. Minimum Chiller Efficiency. Chillers shall meet or exceed Path B from TABLE 110.2-D EXCEPTION 1 to Section 170.2(c)4G: Chillers with electrical service > 600V. EXCEPTION 2 to Section 170.2(c)4G: Chillers attached to a heat recovery system with a design heat recovery capacity > 40 percent of the design chiller cooling capacity. EXCEPTION 3 to Section 170.2(c)4G: Chillers used to charge thermal energy storage systems where the charging temperature is < 40 F. EXCEPTION 4 to Section 170.2(c)4G: In buildings with more than 3 chillers, only 3 chillers are required to meet the Path B efficiencies H. Limitation of Air-Cooled Chillers. Chilled water plants shall not have more than 300 tons provided by air-cooled chillers. EXCEPTION 1 to Section 170.2(c)4H: Where the water quality at the building site fails to meet manufacturer’s specifications for the use of water-cooled chillers. EXCEPTION 2 to Section 170.2(c)4H: Chillers that are used to charge a thermal energy storage system with a design temperature of less than 40 degrees F (4 degrees C). I. Hydronic System Measures. i. Hydronic Variable Flow Systems. HVAC chilled and hot water pumping shall be designed for variable fluid flow and shall be capable of reducing pump flow rates to no more than the larger of: a) 50 percent or less of the design flow rate; or b) the mi… ii. Chiller Isolation. When a chilled water system includes more than one chiller, provisions shall be made so that flow through any chiller is automatically shut off when that chiller is shut off while still maintaining flow through other operating c… |
| 546 | iii. Boiler Isolation. When a hot water plant includes more than one boiler, provisions shall be made so that flow through any boiler is automatically shut off when that boiler is shut off while still maintaining flow through other operating boiler(s). iv. Chilled and Hot Water Temperature Reset Controls. Systems with a design capacity exceeding 500,000 Btu/hr supplying chilled or heated water shall include controls that automatically reset supply water temperatures as a function of representative b… EXCEPTION to Section 170.2(c)4Iiv: Hydronic systems that use variable flow to reduce pumping energy in accordance with Section 170.2(c)4Ii. v. Water-Cooled Air Conditioner and Hydronic Heat Pump Systems. Water circulation systems serving water-cooled air conditioners, hydronic heat pumps, or both, that have total pump system power exceeding 5 hp shall have flow controls that meet the requ… vi. Variable Flow Controls. a. Variable Speed Drives. Individual pumps serving variable flow systems and having a motor horsepower exceeding 5 hp shall have controls or devices (such as variable speed control) that will result in pump motor demand of no more than 30 percent of d… b. Pressure Sensor Location and Setpoint. c. For systems without direct digital control of individual coils reporting to the central control panel, differential pressure shall be measured at the most remote heat exchanger or the heat exchanger requiring the greatest differential pressure. d. For systems with direct digital control of individual coils with a central control panel, the static pressure set point shall be reset based on the valve requiring the most pressure, and the setpoint shall be no less than 80 percent open. Pressure … EXCEPTION 1 to Section 170.2(c)4Ivi: Heating hot water systems. EXCEPTION 2 to Section 170.2(c)4Ivi: Condenser water systems serving only water-cooled chillers. vii. Hydronic Heat Pump (WLHP) Controls. Hydronic heat pumps connected to a common heat pump water loop with central devices for heat rejection and heat addition shall have controls that are capable of providing a heat pump water supply temperature de… EXCEPTION to Section 170.2(c)4Ivii: Where a system loop temperature optimization controller is used to determine the most efficient operating temperature based on real-time conditions of demand and capacity, dead bands of less than 20 F shall be allowed. J. RESERVED K. Fan Control. Each cooling system listed in TABLE 170.2-H shall be designed to vary the indoor fan airflow as a function of load and shall comply with the following requirements: i. DX and chilled water cooling systems that control the capacity of the mechanical cooling directly based on occupied space temperature shall (i) have a minimum of 2 stages of fan control with no more than 66 percent speed when operating on stage 1; … ii. All other systems, including but not limited to DX cooling systems and chilled water systems that control the space temperature by modulating the airflow to the space, shall have proportional fan control such that at 50 percent air flow the power … |
| 547 | iii. Systems that include an air side economizer to meet 170.2(c)4Ci shall have a minimum of two speeds of fan control during economizer operation. EXCEPTION to Section 170.2(c)4K: Modulating fan control is not required for chilled water systems with all fan motors <1 HP, or for evaporative systems with all fan motors < 1 HP, if the systems are not used to provide ventilation air and all indoor f… L. Mechanical System Shut-off. Any directly conditioned common use area space with operable wall or roof openings to the outdoors shall be provided with interlock controls that disable or reset the temperature setpoint to 55 F for mechanical heating … EXCEPTION 1 to Section 170.2(c)4L: Interlocks are not required on doors with automatic closing devices. EXCEPTION 2 to Section 170.2(c)4L: Any space without a thermostatic control (thermostat or a space temperature sensor used to control heating or cooling to the space). M. Exhaust System Transfer Air. Conditioned supply air delivered to any space with mechanical exhaust shall not exceed the greater of: i. The supply flow required to meet the space heating or cooling load; or ii. The ventilation rate required by the authority having jurisdiction, the facility Environmental Health and Safety Department, or by Section 160.2(c)3; or iii. The mechanical exhaust flow minus the available transfer air. Available transfer air shall be from another conditioned space or return air plenums on the same floor and same smoke or fire compartment, and that at their closest point are within 15… EXCEPTION 1 to Section 170.2(c)4M: Spaces that are required by applicable codes and standards to be maintained at a positive pressure differential relative to adjacent spaces. EXCEPTION 2 to Section 170.2(c)4M: Spaces where the highest amount of transfer air that could be used for exhaust makeup may exceed the available transfer airflow rate and where the spaces have a required negative pressure relationship. N. Dedicated Outdoor Air Systems (DOAS). HVAC Systems utilizing a dedicated outdoor air system (DOAS) to condition, temper, or filter 100 percent outdoor air separate from local or central space-conditioning systems serving the same space shall meet t… i. Provide each space with one of the following configurations: a. A DOAS unit and a separate independent space-conditioning system in which the independent space-conditioning system complies with the economizer requirements specified by Section 170.2(c)4Ci and the DOAS unit complies with the exhaust air heat reco… b. A DOAS unit which meets or exceeds the following criteria and a separate space cooling system: I. Provides at least the minimum ventilation air flow rate as specified in Section 120.1(c)3 and provides no less than 0.3cfm/ft2 during economizer operation. II. Ventilation sensible energy recovery ratio of at least 60 percent or enthalpy recovery ratio of at least 50 percent at full flow cooling design conditions and heating design condition. III. Energy recovery bypass or control to directly economize with ventilation air based on outdoor air temperature limits specified in TABLE 170.2-G. c. DOAS units with airflow rate > 1,000 cfm must meet demand ventilation control requirements in accordance with Sections 160.2(c)5C, D, and E. EXCEPTION to Section 170.2(c)4Ni: Systems installed for the sole purpose of providing makeup air for exhausting toxic fumes, flammable materials, paint, corrosive fumes, dust, dryer exhaust, or commercial kitchen hoods used for collecting and removing… |
| 548 | ii. Ventilation fan systems shall be capable of modulating fan speed control. iii. Heating and cooling equipment fans, heating and cooling circulation pumps, and terminal unit fans shall cycle off, and terminal unit primary cooling air shall be shut off when there is no call for heating or cooling in the zone. EXCEPTION to Section 170.2(c)4Niii: Fans used for heating and cooling using less than 0.12 watts per cfm may operate when space temperatures are within the thermostat deadband to provide destratification and air mixing in the space. iv. The DOAS supply air shall be delivered directly to the occupied space or downstream of the terminal heating/or cooling coils. EXCEPTION 1 to Section 170.2(c)4Niv: Active chilled beam systems. EXCEPTION 2 to Section 170.2(c)4Niv: Sensible only cooling terminal units with pressure-independent variable-airflow regulating devices limiting the DOAS supply air to the greater of latent load or minimum ventilation requirements. EXCEPTION 3 to Section 170.2(c)4Niv: Terminal heating or cooling units that comply with the low fan power allowance requirements in Exception to Section 170.2(c)4Oiii. v. DOAS with mechanical cooling providing ventilation to multiple zones and operating in conjunction with zone heating and cooling systems shall not use heating or heat recovery to warm supply air above 60 F when representative building loads or outdo… vi. DOAS with a total fan system power less than 1 kW shall not exceed a total combined fan power of 1.0 W/cfm. DOAS with fan power greater than or equal to 1 kW shall meet the requirements of Section 170.2(c)4A. O. Exhaust Air Heat Recovery. Fan systems designed to operate to the criteria listed in either Table 170.2-I or Table 170.2-J shall include an exhaust air heat recovery system which meets the following: i. A sensible energy recovery ratio of at least 60 percent or an enthalpy recovery ratio of at least 50 percent for both heating and cooling design conditions. EXCEPTION 1 to Section 170.2(c)4Oii: DOAS units with the capability to shut off when a separate independent space-conditioning system meets the economizer requirements specified by section 170.2(c)4Ci is economizing. EXCEPTION 2 to Section 170.2(c)4O: Systems meeting Section 140.9(c) Prescriptive Requirements for Laboratory and Factory Exhaust Systems. EXCEPTION 3 to Section 170.2(c)4O: Systems serving spaces that are not cooled and that are heated to less than 60 F. EXCEPTION 4 to Section 170.2(c)4O: Where more than 60 percent of the outdoor air heating energy is provided from site-recovered energy in Climate Zone 16. EXCEPTION 5 to Section 170.2(c)4O: Sensible recovery ratio requirements at heating design conditions are exempted for Climate Zone 15. |
| 549 | EXCEPTION 6 to 170.2(c)4O: Sensible recovery ratio requirements at cooling design conditions are exempted for Climate Zone 01. EXCEPTION 7 to Section 170.2(c)4O: Where the sum of the airflow rates exhausted and relieved within 20 feet of each other is less than 75 percent of the design outdoor airflow rate, excluding exhaust air that is either: i. used for another energy recovery system; ii. not allowed by California Mechanical Code (Title 24, Part 4) for use in energy recovery systems with leakage potential; or iii. of Class 4 as specified in Section 160.2(c)8. EXCEPTION 8 to Section 170.2(c)4O: Systems expected to operate less than 20 hours per week. |
| 551 | (d) Water Heating Systems. Water-heating systems shall meet the requirements of either 1, 2, 3 or 4. For recirculation distribution systems serving individual dwelling units, only Demand Recirculation Systems with manual on/off control as specified in the Reference Appendix RA4.4.9 shall be used. Recirculation system serving multiple dwelling units s… 1. For systems serving individual dwelling units, the water heating system shall meet the requirement of either A, B, C, or shall meet the performance compliance requirements of Section 170.1: A. A single 240 volt heat pump water heater. In addition, meet the following: i. A compact hot water distribution system as specified in the Reference Appendix RA4.4.6. in climate 1 and 16; and ii. A drain water heat recovery system that is field verified as specified in the Reference Appendix RA3.6.9 in climate zone 16. B. A single heat pump water heater that meets the requirements of NEEA Advanced Water Heater Specification Tier 3 or higher. In addition, for Climate Zones 16, a drain water heat recovery system that is field verified as specified in the Reference App… 2. For heat pump water-heating systems serving multiple dwelling units, the water heating system shall be installed according to the manufacturer design and installation guidelines and meet the following requirements: A. The hot water return from the recirculation loop shall connect to a recirculation loop tank and shall not directly connect to the primary heat pump water heater inlet or the primary thermal storage tanks. B. The fuel source for the recirculation loop tank shall be electricity if auxiliary heating is needed. The recirculation loop heater shall be capable of multi-pass water heating operation. C. For systems with single pass primary heat pump water heater, the primary thermal storage tanks shall be piped in series if multiple tanks are used. For systems with multi-pass primary heat pump water heater, the primary thermal storage tanks shall … D. The primary storage tank temperature setpoint shall be at least 135 F. E. The recirculation loop tank temperature setpoint shall be at least 10 F lower than the primary thermal storage tank temperature setpoint such that hot water from the recirculation loop tank is used for the temperature maintenance load before engagi… F. The minimum heat pump water heater compressor cut-off temperature shall be equal to or lower than 40 F ambient air temperature. G. A recirculation system. H. Design documentation shall be provided in accordance with JA14.4. EXCEPTION to Section 170.2(d)2G: Buildings with eight or fewer dwelling units. 3. For gas or propane systems serving multiple dwelling units, a central water-heating system that includes the following components shall be installed: A. For Climate Zones 1 through 9, gas service water-heating systems with a total installed gas water-heating input capacity of 1 MMBtu/h or greater shall have gas service water-heating equipment with a minimum thermal efficiency of 90 percent. Multipl… |
| 552 | EXCEPTION 1 to Section 170.2(d)3A: Individual gas water heaters with input capacity at or below 100,000 Btu/h shall not be included in the calculations of the total system input or total system efficiency. B. A recirculation system. EXCEPTION to Section 170.2(d)3B: Buildings with eight or fewer dwelling units. C. A solar water-heating system meeting the installation criteria specified in Reference Residential Appendix RA4 and with a minimum solar savings fraction of either i or ii below: i. A minimum solar savings fraction of 0.20 in Climate Zones 1 through 9 or a minimum solar savings fraction of 0.35 in Climate Zones 10 through 16; or ii. A minimum solar savings fraction of 0.15 in Climate Zones 1 through 9 or a minimum solar savings fraction of 0.30 in Climate Zones 10 through 16. In addition, a drain water heat recovery system that is field verified as specified in the Reference… 4. A water-heating system serving multiple dwelling units determined by the Executive Director to use no more energy than the one specified in subsection 1, 2, or 3 above. |
| 554 | (e) Lighting. Dwelling unit and common living area lighting shall meet the applicable mandatory requirements of Section 160.5(a). Common service use area lighting shall meet the following requirements: EXCEPTION to Section 170.2(e): Common use areas providing shared provisions for living, eating, cooking, or sanitation to dwelling units that would otherwise lack these provisions may instead comply with Section 160.5(a). 1. Interior Common Service Use Area Lighting. A building complies with Section 170.2(e)1 if: A. The Calculation of Adjusted Indoor Lighting Power of all proposed building areas combined, calculated under Subsection A 170.2(e)2 is no greater than the Calculation of Allowed Indoor Lighting Power, Specific Methodologies calculated under Subsecti… B. The Calculation of Allowed Indoor Lighting Power, General Rules comply with Subsection 170.2(e)3B; The prescriptive limits on indoor lighting power are the smaller of the Actual and Allowed Indoor Lighting Power values determined in accordance with item i. 2. Calculation of Adjusted Indoor Lighting Power. The adjusted indoor Lighting Power of all proposed building areas is the total watts of all planned permanent and portable lighting systems in all areas of the proposed building; subject to the applica… A. Two interlocked lighting systems: No more than two lighting systems may be used for an area, and if there are two they must be interlocked. Where there are two interlocked lighting systems, the watts of the lower wattage system may be excluded from… i. An Installation Certificate detailing compliance with Section 170.2(e)1A is submitted in accordance with Section 10-103 and Section 160.5(e); and ii. The area or areas served by the interlocking systems is an auditorium, a conference room, a multipurpose room, or a theater; and iii. The two lighting systems are interlocked with a Nonprogrammable Double-Throw Switch to prevent simultaneous operation of both systems. For compliance with Part 6 a Nonprogrammable Double-Throw Switch is an electrical switch commonly called a “single pole double throw” or “three-way” switch that is wired as a selector switch allowing one of two loads to be enabled. It can be a line vo… B. Reduction of wattage through controls. In calculating Adjusted Indoor Lighting Power, the installed watts of a luminaire providing general lighting in an area listed in TABLE 170.2-L may be reduced by the product of (i) the number of watts controll… i. An Installation Certificate is submitted in accordance with Section 160.5(e)2; and ii. Luminaires and controls meet the applicable requirements of Section 110.9, and Sections 160.5(b) through 160.6; and iii. The controlled lighting is permanently installed general lighting systems and the controls are permanently installed nonresidential-rated lighting controls. When used for determining PAFs for general lighting in offices, furniture mounted luminaires that comply with all of the following conditions shall qualify as permanently installed general lighting systems: a. The furniture mounted luminaires shall be permanently installed no later than the time of building permit inspection; and b. The furniture mounted luminaires shall be permanently hardwired; and |
| 555 | c. The furniture mounted lighting system shall be designed to provide indirect general lighting; and d. Before multiplying the installed watts of the furniture mounted luminaire by the applicable PAF, 0.3 watts per square foot of the area illuminated by the furniture mounted luminaires shall be subtracted from installed watts of the furniture mounted… e. The lighting control for the furniture mounted luminaire complies with all other applicable requirements in Section 170.2(e)1Aii. iv. At least 50 percent of the light output of the controlled luminaire is within the applicable area listed in Table 170.2-L. Luminaires on lighting tracks shall be within the applicable area in order to qualify for a PAF. v. Only one PAF from Table 170.2-L may be used for each qualifying luminaire. PAFs shall not be added together unless allowed in Table 170.2-L. vi. Only lighting wattage directly controlled in accordance with Section 170.2(e)1Aii shall be used to reduce the installed watts as allowed by Section 170.2(e)1Aii for calculating the Adjusted Indoor Lighting Power. If only a portion of the wattage i… vii. Lighting controls used to qualify for a PAF shall be designed and installed in addition to manual, multilevel, and automatic lighting controls required in Section 160.5(b)4, and in addition to any other lighting controls required by any provision… viii. To qualify for the PAF for daylight continuous dimming plus OFF control, the daylight control and controlled luminaires shall comply with Section 160.5(b)4D, 160.5(e)1C and 160.5(e)1G, and the controls shall be continuous dimming and shall addit… ix. To qualify for the PAF for an occupant sensing control controlling the general lighting in open plan office areas above workstations, in accordance with Table 170.2-L, the following requirements shall be met:u a. The open plan office area shall be greater than 250 square feet; and b. This PAF shall be available only in office areas which contain workstations; and c. Controlled luminaires shall only be those that provide general lighting directly above the controlled area, or furniture mounted luminaires that comply with Section 170.2(e)1Aii and provide general lighting directly above the controlled area; and d. Qualifying luminaires shall be controlled by occupant sensing controls that meet all of the following requirements, as applicable: I. Infrared sensors shall be equipped by the manufacturer, of fitted in the field by the installer, with lenses or shrouds to prevent them from being triggered by movement outside of the controlled area. II. Ultrasonic sensors shall be tuned to reduce their sensitivity to prevent them from being triggered by movements outside of the controlled area. III. All other sensors shall be installed and adjusted as necessary to prevent them from being triggered by movements outside of the controlled area. |
| 556 | x. To qualify for the PAF for an Institutional Tuning in Table 170.2-L, the tuned lighting system shall comply with all of the following requirements: a. The lighting controls shall limit the maximum output or maximum power draw of the controlled lighting to 85 percent or less of full light output or full power draw; and b. The means of setting the limit is accessible only to authorized personnel; and c. The setting of the limit is verified by the acceptance test required by Section 160.5(e)1G; and d. The construction documents specify which lighting systems shall have their maximum light output or maximum power draw set to no greater than 85% of full light output or full power draw. xi. To qualify for the PAF for a Demand Responsive Control in Table 170.2-L, the general lighting wattage receiving the PAF shall not be within the scope of Section 110.12(c) and a Demand Responsive Control shall meet all of the following requirements: a. The controlled lighting shall be capable of being automatically reduced in response to a demand response signal; and b. General lighting shall be reduced in a manner consistent with uniform level of illumination requirements in TABLE 160.5-B. xii. To qualify for the PAFs for clerestory fenestration, horizontal slats, or light shelves in Table 170.2-L, the daylighting design shall meet the requirements in Section 140.3(d). The PAFs shall only apply to lighting in a primary or secondary side… C. Lighting wattage excluded. The watts of the following indoor lighting applications may be excluded from Adjusted Indoor Lighting Power: i. Lighting installed by the manufacturer in walk-in coolers or freezers, vending machines, and food preparation equipment. ii. Lighting that is required for exit signs subject to the CBC. Exit signs shall meet the requirements of the Appliance Efficiency Regulations. iii. Exit way or egress illumination that is normally off and that is subject to the CBC. iv. Temporary lighting systems. v. Lighting systems in qualified historic buildings, as defined in the California Historical Building Code (Title 24, Part 8), are exempt from the Lighting Power Density allowances, if they consist solely of historic lighting components or replicas of… vi. Lighting for signs: Lighting for signs shall comply with Section 170.2(e)7. vii. Lighting in elevators where the lighting meets the requirements in Section 120.6(f). viii. Lighting connected to a Life Safety Branch or Critical Branch, as specified in Section 517 of the California Electrical Code. D. Luminaire Classification and Power Adjustment i. Luminaire Classification and Power shall be determined in accordance with Section 160.5(b)1. ii. Small Aperture Tunable-White and Dim-to-Warm Luminaires Lighting Power Adjustment. For qualifying small aperture tunable-white and dim-to-warm LED luminaires, the adjusted indoor lighting power of these luminaires shall be calculated by multiplyin… |
| 557 | a. Small Aperture. Qualifying luminaires with a luminaire aperture length longer than 18 inches shall have a luminaire aperture no wider than four inches. Qualifying luminaires with a luminaire aperture length of 18 inches or less shall have a luminai… b. Color Changing. Qualifying tunable-white luminaires shall be capable of a color change greater than or equal to 2000 Kelvin correlated color temperature (CCT). Qualifying dim-to-warm luminaires shall be capable of color change greater than or equal… c. Controls. Qualifying luminaires shall be connected to controls that allows color changing of the luminaires. iii. Tailored Method Display Lighting Mounting Height Lighting Power Adjustment. For wall display luminaires or floor display luminaires meeting Tailored Method Section 170.2(e)1Ciig and h and where the bottom of luminaires are 10 feet 7 inches and gr… 3. Calculation of Allowed Indoor Lighting Power: General Rules. A. The allowed Indoor Lighting Power allotment for conditioned areas shall be calculated separately from the allowed Lighting Power allotment for unconditioned areas. Each allotment is applicable solely to the area to which it applies, and there shall… B. Allowed Indoor Lighting Power allotment shall be calculated separately from the allowed Outdoor Lighting Power allotment. Each allotment is applicable solely to the area to which it applies, and there shall be no trade-offs between the separate Ind… C. The Allowed Indoor Lighting Power allotment for general lighting shall be calculated as follows: i. The Area Category Method, as described in Section 170.2(e)1Ci, shall be used either by itself for all common use areas in the building, or when some areas in the building use the Tailored Method described in Section 170.2(e)1Cii. Under the Area Cat… a. For conditioned areas, by multiplying the conditioned square feet of the area times the applicable allotment of watts per square foot for the area shown in Table 170.2-M (or TABLE 170.2-N if the Tailored Method is used for that area). b. For unconditioned areas, by multiplying the unconditioned square feet of the area times the applicable allotment of watts per square foot for the area shown in TABLE 170.2-M (or Table 170.2-N if the Tailored Method is used for that area). D. The Tailored Method, as described in Section 170.2(e)1Cii, shall be used either by itself for all areas in the building, or when some areas in the building use the Area Category Method described in Section 170.2(e)1Ci. Under the Tailored Method (ei… |
| 558 | i. For conditioned areas, by multiplying the conditioned square feet of the area times the applicable allotment of watts per square foot for the area shown in Table 170.2-N (or Table 170.2-M if the Area Category Method is used for that area); ii. For unconditioned areas, by multiplying the unconditioned square feet of the area times the applicable allotment of watts per square foot for the area shown in TABLE 170.2-L (or TABLE 170.2-M if the Area Category Method is used for that area); F. If the Area Category Method is used for an area, the Tailored Method may not be used for that area. If the Tailored Method is used for an area, the Area Category Method may not be used for that area. 4. Calculation of Allowed Indoor Lighting Power: Specific Methodologies. The allowed indoor Lighting Power for each common use primary function area shall be calculated using only one of the methods in Subsection i, ii, or iii below as applicable. A. Area Category Method. Requirements for using the Area Category Method include all of the following: i. The Area Category Method shall be used only for primary function areas, as defined in Section 100.1, that are listed in Table 170.2-M. For primary function areas not listed, selection of a reasonably equivalent type shall be permitted. ii. For purposes of compliance with Section 170.2(e)1Ci, an “area” shall be defined as all contiguous areas that accommodate or are associated with a single primary function area listed in Table 170.2-M. iii. Where areas are bounded or separated by interior partitions, the floor area occupied by those interior partitions may be included in a Primary Function Area. iv. The allowed indoor Lighting Power for each primary function area is the Lighting Power Density value in TABLE 170.2-M times the square feet of the primary function area. The total allowed indoor Lighting Power for the building is the sum of all al… v. In addition to the allowed indoor Lighting Power calculated according to Sections 170.2(e)1Cia through f, the building may add additional lighting power allowances for qualifying lighting systems as specified in the Qualifying Lighting Systems colu… a. Only primary function areas having a lighting system as specified in the Qualifying Lighting Systems column in TABLE 170.2-M and in accordance with the corresponding footnote of the TABLE shall qualify for the additional lighting power allowances; and b. The additional lighting power allowances shall be used only if the plans clearly identify all applicable task areas and the lighting equipment designed to illuminate these tasks; and c. Tasks that are performed less than two hours per day or poor quality tasks that can be improved are not eligible for the additional lighting power allowances; and d. The additional lighting power allowances shall not utilize any type of luminaires that are used for general lighting in the building; and |
| 559 | e. The additional lighting power allowances shall not be used when using the Complete Building Method, or when the Tailored Method is used for any area in the building; and f. The additional lighting power allowed is the smaller of: I. the lighting power density listed in the “Allowed Additional Lighting LPD” column in TABLE 170.2-M, times the square feet of the primary function, or II. the Adjusted Indoor Lighting Power of the applicable lighting; and g. In addition to all other additional lighting power allowed under Sections 170.2(e)1CifI through VI, up to 1.0 watts per square foot of additional lighting power shall be allowed in a videoconferencing studio, as defined in Section 100.1, provided t… I. A completed and signed Installation Certificate is prepared and submitted in accordance with Section 160.5(e)1B, specifically detailing compliance with the applicable requirements of Section 170.2(e)1CifVII; and II. The Videoconferencing Studio is a room with permanently installed videoconferencing cameras, audio equipment, and playback equipment for both audio-based and video-based two-way communication between local and remote sites; and III. General lighting is switched in accordance with TABLE 160.5-B; and IV. Wall wash lighting is separately switched from the general lighting system; and V. All of the lighting in the studio, including general lighting and additional lighting power allowed by Section 170.2(e)1CifVII is controlled by a multiscene programmable control system (also known as a scene preset control system)RESERVED. B. Tailored Method. Requirements for using the Tailored Method include all of the following: i. The Tailored Method shall be used only for primary function areas listed in TABLE 170.2-N as defined in Section 100.1. ii. Allowed Indoor Lighting Power allotments for general lighting shall be determined according to Section 170.2(e)1Ciif, as applicable. iii. For compliance with Section 170.2(e)1Cii, an “area” shall be defined as all contiguous areas that accommodate or are associated with a single primary function area listed in TABLE 170.2-N. iv. Where areas are bounded or separated by interior partitions, the floor area occupied by those interior partitions may be included in a Primary Function Area. v. In addition to the allowed indoor Lighting Power allotments for general lighting calculated according to Section 170.2(e)1Ciif, as applicable, the building may add additional lighting power allowances for wall display lighting, task lighting, and d… vi. Determine allowed indoor Lighting Power allotments for general lighting for primary function areas listed in TABLE 170.2-N as follows: a. Use the General Illumination Level (Lux) listed in Column 2 of TABLE 170.2-N to determine the Allowed General Lighting Power Density allotments for the area. b. Determine the room cavity ratio (RCR) for the area. The RCR shall be calculated according to the applicable equation in TABLE 170.2-P. c. Find the allowed General Lighting Power Density allotments in TABLE 170.2-Q that is applicable to the General Illuminance Level (Lux) from Column 2 of TABLE 170.2-N (as described in Item i.) and the RCR determined in accordance with TABLE 170.2-P (… |
| 560 | d. Determine the square feet of the area in accordance with Section 170.2(e)1Ciic and d. e. Multiply the allowed Lighting Power Density allotment, as determined in accordance with Item iii by the square feet of each primary function area, as determined in accordance with Item iv. The product is the Allowed Indoor Lighting Power allotment … vii. Determine additional allowed power for wall display lighting according to column 3 of TABLE 170.2-N for each primary function area as follows: a. Qualifying wall lighting shall: I. Be mounted within 10 feet of the wall having the wall display. When track lighting is used for wall display, and where portions of that lighting track are more than 10 feet from the wall and other portions are within 10 feet of the wall, portions o… II. Be a lighting system type appropriate for wall lighting. Lighting systems appropriate for wall lighting are lighting track adjacent to the wall, wall-washer luminaires, luminaires behind a wall valance or wall cove, or accent light. (Accent lumina… viii. Determine additional allowed power allotment for task lighting according to Column 4 of Table 170.2-N for each primary function area as follows: a. Additional allowed power for task lighting, may be used by qualifying task lighting systems. For floor areas qualifying for task lighting power allowances, the additional allowed power shall be used only once for the same floor area, so that the al… b. Qualifying task lighting shall: I. Be located immediately adjacent to and capable of illuminating the task for which it is installed. II. Be of a type different from the general lighting system. III. Be separately switched from the general lighting system. c. The square footage of task areas shall be determined in accordance with Section 170.2(e)1ciic and d, except that any floor area designed to not have tasks, such as floor areas designated as a path of egress, shall not be included for the task light… |
| 561 | d. The allowed power for task lighting for each applicable area shall be the smaller of: I. The allowed task lighting power determined in accordance with Section 170.2(e)1ciih multiplied by the floor square footage determined in accordance with Section 170.2(e)1ciihIII; and II. The Adjusted Indoor Lighting Power used for the task lighting systems. ix. Determine additional allowed power for decorative/special effects lighting for each primary function area as follows: a. Qualifying decorative/special effects lighting includes luminaires such as chandeliers, sconces, lanterns, neon and cold cathode, light emitting diodes, theatrical projectors, moving lights and light color panels when any of those lights are used i… b. Additional lighting power for decorative/special effects lighting shall be used only if allowed by Column 5 of TABLE 170.2-N. c. Additional lighting power for decorative/special effects lighting shall be used only in areas having decorative/special effects lighting. The square footage of the floor area shall be determined in accordance with Section 170.2(e)1Ciic and d, and i… d. The additional allowed power for decorative/special effects lighting for each applicable area shall be the smaller of: I. The product of the “allowed decorative/special effects lighting power” determined in accordance with Section 170.2(e)1CiikII, multiplied by the floor square footage determined in accordance with Section 170.2(e)1CiikIII; and II. The Adjusted Indoor Lighting Power of allowed ornamental/special effects lighting. |
| 567 | b RCR values are calculated using applicable equations in TABLE 170.2-P. 5. RESERVED. 6. Outdoor Lighting. A. A multifamily or mixed occupancy outdoor lighting installation complies with this section if it meets the requirements in Subsections 170.2(e)6B and C, and the actual outdoor lighting power installed is no greater than the allowed outdoor lighting … EXCEPTIONS to Section 170.2(e)6A: When more than 50 percent of the light from a luminaire falls within one or more of the following applications, the lighting power for that luminaire shall be exempt from Section 170.2(e)6: i. Temporary outdoor lighting. ii. Lighting required and regulated by the Federal Aviation Administration, and the Coast Guard. iii. Lighting for public streets, roadways, highways, and traffic signage lighting, including lighting for driveway entrances occurring in the public right-of-way owned or maintained by local municipality or utility. iv. Lighting for sports and athletic fields, and children’s playgrounds. v. RESERVED. vi. Lighting of public monuments. vii. Lighting of signs complying with the requirements of Sections 160.5(d) and 170.2(e)7. viii. Lighting of stairs, wheelchair elevator lifts for American with Disabilities Act (ADA) compliance, and ramps that are other than parking garage ramps. ix. Landscape lighting. x. RESERVED. xi. Lighting for outdoor theatrical and other outdoor live performances, provided that these lighting systems are additions to area lighting systems and are controlled by a multiscene or theatrical cross-fade control station accessible only to authori… xii. Outdoor lighting systems for qualified historic buildings, as defined in the California Historic Building Code (Title 24, Part 8), if they consist solely of historic lighting components or replicas of historic lighting components. If lighting sys… |
| 568 | B. Outdoor Lighting Power Trade-offs. Outdoor lighting power trade-offs shall be determined as follows: i. Allowed lighting power determined according to Section 170.2(e)6Di for general hardscape lighting allowance may be traded to specific applications in Section 170.2(e)6Dii, provided the hardscape area from which the lighting power is traded continu… ii. Allowed lighting power determined according to Section 170.2(e)2Dii for additional lighting power allowances for specific applications shall not be traded between specific applications, or to hardscape lighting in Section 170.2(e)6Di. iii. Trading off lighting power allowances between outdoor and indoor areas shall not be permitted. C. Calculation of Actual Lighting Power. The wattage of outdoor luminaires shall be determined in accordance with Section 160.5(b)1. D. Calculation of Allowed Lighting Power. The allowed lighting power shall be the combined total of the sum of the general hardscape lighting allowance determined in accordance with Section 170.2(e)2Di, and the sum of the additional lighting power all… i. General Hardscape Lighting Allowance. Determine the general hardscape lighting power allowances as follows: a. The general hardscape area of a site shall include parking lot(s), roadway(s), driveway(s), sidewalk(s), walkway(s), bikeway(s), plaza(s), bridge(s), tunnel(s), and other improved area(s) that are illuminated. Public roadway(s) that are illuminated… b. Determine the Initial Wattage Allowance (IWA) for general hardscape lighting from TABLE 170.2-R for the appropriate lighting zone. The hardscape area shall be permitted one IWA per site. c. The general hardscape lighting allowance shall be the sum of the allowed watts determined from a and b above. ii. Additional Lighting Power Allowance for Specific Applications. Additional lighting power for specific applications shall be the smaller of the additional lighting allowances for specific applications determined in accordance with TABLE170.2-S for … |
| 571 | 7. Requirements for Signs. Section 170.2(e)7 applies to all internally illuminated and externally illuminated signs, unfiltered light emitting diodes (LEDs), and unfiltered neon, both indoor and outdoor. Each sign shall comply with either Subsection A… A. Maximum Allowed Lighting Power. i. For internally illuminated signs, the maximum allowed lighting power shall not exceed the product of the illuminated sign area and 12 watts per square foot. For double-faced signs, only the area of a single face shall be used to determine the allow… ii. For externally illuminated signs, the maximum allowed lighting power shall not exceed the product of the illuminated sign area and 2.3 watts per square foot. Only areas of an externally lighted sign that are illuminated without obstruction or inte… iii. Lighting for unfiltered light emitting diodes (LEDs) and unfiltered neon shall comply with Section 170.2(e)7B. B. Alternate Lighting Sources. The sign shall be equipped with one or more of the following light sources: i. High pressure sodium lamps; or ii. Metal halide lamps that are: a. Pulse start or ceramic served by a ballast that has a minimum efficiency of 88 percent or greater; or b. Pulse start that are 320 watts or smaller, are not 250 watt or 175 watt lamps, and are served by a ballast that has a minimum efficiency of 80 percent. |
| 572 | Ballast efficiency is the reference lamp power divided by the ballast input power when tested according to ANSI C82.6-2015. iii. Neon or cold cathode lamps with transformer or power supply efficiency greater than or equal to following: a. A minimum efficiency of 75 percent when the transformer or power supply rated output current is less than 50 mA; or b. A minimum efficiency of 68 percent when the transformer or power supply rated output current is 50 mA or greater. The ratio of the output wattage to the input wattage is at 100 percent tubing load. iv. Fluorescent lighting systems meeting one of the following requirements: a. Use only lamps with a minimum color rendering index (CRI) of 80; or b. Use only electronic ballasts with a fundamental output frequency not less than 20 kHz. v. Light emitting diodes (LEDs) with a power supply having an efficiency of 80 percent or greater; or EXCEPTION to Section 170.2(e)7Bv: Single voltage external power supplies that are designed to convert 120 volt AC input into lower voltage DC or AC output, and have a nameplate output power less than or equal to 250 watts, shall comply with the applic… vi. Compact fluorescent lamps that do not contain a medium screw base sockets (E24/E26). EXCEPTION 1 to Section 170.2(e)7: Unfiltered incandescent lamps that are not part of an electronic message center (EMC), an internally illuminated sign, or an externally illuminated sign. EXCEPTION 2 to Section 170.2(e)7: Exit signs. Exit signs shall meet the requirements of the Appliance Efficiency Regulations. (f) Photovoltaic Requirements – Three Habitable Stories or Less. All multifamily buildings up to three habitable stories shall have a newly installed photovoltaic (PV) system or newly installed PV modules meeting the minimum qualification requirements… |
| 575 | EXCEPTION 5 to Section 170.2(g). Multi-tenant buildings in areas where a load serving entity does not provide either a Virtual Net Metering (VNEM) or community solar program. |
| 578 | 2022 P6 S180 SUBCHAPTER 12 MULTIFAMILY BUILDINGS – ADDITIONS, ALTERATIONS, AND REPAIRS TO EXISTING MULTIFAMILY BUILDINGS Section 180.0 – General |
| 579 | Section 180.1 – Additions (a) Prescriptive approach. The envelope and lighting of the addition; any newly installed space-conditioning or ventilation system, electrical power distribution system, or water-heating system; any addition to an outdoor lighting system; and any new … 1. Envelope. A. Additions that are greater than 700 square feet shall meet the requirements of Section 170.2(a), with the following modifications: i. Framed Walls Extension. Extensions of existing wood-framed walls may retain the dimensions of the existing walls and shall install cavity insulation of R-15 in a 2×4 framing and R-21 in a 2×6 framing. ii. The maximum allowed fenestration area shall be the greater of 175 square feet or 20 percent of the addition floor area. iii. When existing siding of a wood-framed wall is not being removed or replaced, cavity insulation of R-15 in a 2×4 framing and R-21 in a 2×6 framing shall be installed and continuous insulation is not required. iv. Additions that consist of the conversion of existing spaces from unconditioned to conditioned space shall not be required to perform the air sealing part of QII when the existing air barrier is not being removed or replaced. B. Additions that are 700 square feet or less shall meet the requirements of Section 170.2(a), with the following modifications. i. Roof and Ceiling insulation in a ventilated attic shall meet one of the following requirements: |
| 580 | a. In Climate Zones 1, 2, 4, and 8 through 16, achieve an overall assembly U-factor not exceeding 0.025. In wood framed assemblies, compliance with U-factors may be demonstrated by installing insulation with an R-value of R-38 or greater. b. In Climate Zones 3, and 5 through 7, achieve an overall assembly U-factor not exceeding 0.031. In wood framed assemblies, compliance with U-factors may be demonstrated by installing insulation with an R-value of R-30 or greater. ii. Radiant Barrier – For buildings three habitable stories or less, radiant barriers shall be installed in attics with exposed attic deck undersides in climate zones 2-15. iii. Extensions of existing wood-framed walls may retain the dimensions of the existing walls and shall install cavity insulation of R-15 in a 2×4 framing and R-21 in a 2×6 framing; and iv. Fenestration products must meet the U-factor, RSGHC, and VT requirements of TABLE 180.2-B v. Quality Insulation Installation (QII) requirements of Section 170.2(a)6 do not apply. EXCEPTION 1 to Section 180.1(a)1B: Insulation in an enclosed rafter ceiling shall meet the requirements of Section 160.1(a). EXCEPTION 2 to Section 180.1(a)1B: Additions that increase the area of the roof by 2,000 square feet or less are exempt from the solar ready requirements of Section 160.8. 2. Mechanical Ventilation for Indoor Air Quality. Additions to existing buildings shall comply with Section 160.2 subject to the requirements specified in subsections A and B below. When HERS field verification and diagnostic testing is required by S… ii. Additions to an existing dwelling unit that increase conditioned floor area by more than 1,000 square feet shall have mechanical ventilation airflow in accordance with Sections 160.2(b)2Aiv or 160.2(b)2Av, as applicable. The mechanical ventilation… iii. New dwelling units that are additions to an existing building shall have mechanical ventilation airflow provided in accordance with Sections 160.2(b)2Aiv or 160.2(b)2Av as applicable. The mechanical ventilation airflow rate shall be based on the … 3. Water Heater. When additional water heating equipment is installed to serve a dwelling unit as part of the addition, one of the following types of water heaters shall be installed: A. A water-heating system that meets the requirements of Section 170.2(d); or |
| 581 | B. A water-heating system determined by the Executive Director to use no more energy than the one specified in Item A above. (b) Performance approach. Performance calculations shall meet the requirements of Section 170.0 through 170.2(a), pursuant to the applicable requirements in Items 1, 2, and 3 below. 1. For additions alone. The addition complies if the addition alone meets the energy budgets as specified in Section 170.1. 2. Existing plus alteration plus addition. The standard design for existing plus alteration plus addition energy use is the combination of the existing building’s unaltered components to remain; existing building altered components that are the more e… EXCEPTION to Section180.1(b)2: Existing structures with a minimum R-11 insulation in framed walls showing compliance with Section 180.1(b) are exempt from showing compliance with Section 160.1(b). |
| 583 | Section 180.2 – Alterations (a) Mandatory Requirements. Altered components in a multifamily building shall meet the minimum requirements in this Section. 1. Roof/Ceiling Insulation. The opaque portions of the roof/ceiling that separate conditioned spaces from unconditioned spaces or ambient air shall meet the requirements of Section 180.2(b)1B. 2. Wall Insulation. For the altered opaque portion of walls separating conditioned spaces from unconditioned spaces or ambient air shall meet the applicable requirements of Items A through D below: A. Metal Building. A minimum of R-13 insulation between framing members, or the area-weighted average U-factor of the wall assembly shall not exceed U-0.113. B. Metal Framed. A minimum of R-13 insulation between framing members, or the area-weighted average U-factor of the wall assembly shall not exceed U-0.217. C. Wood Framed and Others. A minimum of R-11 insulation between framing members, or the area-weighted average U-factor of the wall assembly shall not exceed U-0.110. D. Spandrel Panels and Curtain Walls. A minimum of R-4, or the area-weighted average U-factor of the wall assembly shall not exceed U-0.280. EXCEPTION to Section 180.2(a)2: Light and heavy mass walls. 3. Floor Insulation. For the altered portion of raised floors that separate conditioned spaces from unconditioned spaces or ambient air shall meet the applicable requirements of Items A through B below: A. Raised Framed Floors. A minimum of R-11 insulation between framing members, or the area-weighted average U-factor of the floor assembly shall not exceed the U-factor of U-0.071. B. Raised Mass Floors. A minimum of R-6 insulation, or the area-weighted average U-factor of the floor assembly shall not exceed the U-factor of U-0.111. (b) Prescriptive approach. The altered component and any newly installed equipment serving the alteration shall meet the applicable requirements of Sections 110.0 through 110.9 and all applicable requirements of Section 160.0, 160.1, 160.2(c) and (d)… 1. Envelope – A. Roofing ProductsRoof Alterations. Existing roofs being replaced, recovered or recoated, of a multifamily building shall meet the requirements of Section 110.8(i). Roofs with more than 50 percent of the roof area or more than 2,000 square feet of ro… |
| 584 | EXCEPTION to Section 180.2(b)1A: Roof area covered by building integrated photovoltaic panels and building integrated solar thermal panels are not required to meet the minimum requirements for solar reflectance, thermal emittance, or SR. i. Low-sloped roofs in Climate Zones 2, 4, and 6 through 15 shall have a minimum aged solar reflectance of 0.63 and a minimum thermal emittance of 0.75, or a minimum SRI of 6475. EXCEPTION 2 to Section 180.2(b)1Ai: Roof constructions with a weight of at least 25 lb/ft² are not required to meet the minimum requirements for solar reflectance, thermal emittance, or SRI. ii. Steep-sloped roofs in Climate Zones 4 and 8 through 15 shall have a minimum aged solar reflectance of 0.20 and a minimum thermal emittance of 0.75, or a minimum SRI of 16. EXCEPTION 1 TO 180.2(b)1Aii150.2(b)1Ji: The following shall be considered equivalent to Subsection ii: a. Buildings with ceiling assemblies with a U-factor lower than or equal to 0.025 or that are insulated with at least R-38 ceiling insulation in an attic; or b. Buildings with a radiant barrier in the attic, where the radiant barrier is not installed directly above spaced sheathing, meeting the requirements of Section 150.1(c)2170.2(a)1C; or c. Buildings that have no ducts in the attic in Climate Zones 2, 4, 9, 10, 12, and 14; or d. Buildings with R-2 or greater continuous insulation above or below the roof deck. EXCEPTION 1 to Section 180.2(b)1Ai and ii: Roof area covered by building integrated photovoltaic panels and building integrated solar thermal panels are not required to meet the minimum requirements for solar reflectance, thermal emittance, or SR. EXCEPTION 2 to Section 180.2(b)1Ai and ii: Roof constructions with a weight of at least 25 lb/ft² are not required to meet the minimum requirements for solar reflectance, thermal emittance, or SRI. iii. For low-sloped roofs, the area of the roof recover or roof replacement shall be insulated to R-14 continuous insulation or a U-factor of .039 in Climate Zones 1, 2, 4, and 8 through 16. |
| 585 | EXCEPTION 3 to Section 180.2(b)1Aiii: At the drains and other low points, tapered insulation with a thermal resistance less than R-14 may be used, provided that insulation thickness is increased at the high points of the roof so that the average therm… B. Roof/Ceiling Insulation. i. Attic Roof. Vented attics shall meet the following: a. In Climate Zones 1 through 4 and 8 through 16, insulation shall be installed to achieve a weighted U-factor of 0.020 or insulation installed at the ceiling level shall result in an installed thermal resistance of R-49 or greater for the insulation … EXCEPTION 1 to Section 180.2(b)1Bia: In Climate Zones 1, 3, 4, and 9, Ddwelling units with at least R-19 existing insulation installed at the ceiling level with third party verification of existing conditions in Climate Zones 1, 3, 4, and 9. b. In Climate Zones 2 and 11 through 16, air seal all accessible areas of the ceiling plane between the attic and the conditioned space in accordance with Section 110.7; and EXCEPTION 1 to Section 180.2(b)1Bib: Dwelling units with at least R-19 existing insulation installed at the ceiling level with third party verification of existing conditions. EXCEPTION 2 to Section 180.2(b)1Bib: Dwelling units with atmospherically vented space heating or water heating combustion appliances located inside the pressure boundary of the dwelling unit. c. In Climate Zones 1 through 4 and 8 through 16, recessed downlight luminaires in the ceiling shall be covered with insulation to the same depth as the rest of the ceiling. Luminaires not rated for insulation contact must be replaced or fitted with a… EXCEPTION 1 to Section 180.2(b)1Bic: In Climate Zones 1 through 4 and 8 through 10, Ddwelling units with at least R-19 existing insulation installed at the ceiling level with third party verification of existing conditions in Climate Zones 1 through 4… d. Attic ventilation shall comply with CBC the California Building Code requirements. EXCEPTION 1 to Section 180.2(b)1Bi: Dwelling units with at least R-38 existing insulation installed at the ceiling level with third party verification of existing conditions. EXCEPTION 2 to Section 180.2(b)1Bi: Dwelling units where the alteration would directly cause the disturbance of asbestos, unless the alteration is made in conjunction with asbestos abatement. EXCEPTION 3 to Section 180.2(b)1Bi: Dwelling units with knob and tube wiring located in the vented attic. EXCEPTION 4 to Section 180.2(b)1Bi: Where the accessible space in the attic is not large enough to accommodate the required R-value, the entire accessible space shall be filled with insulation provided such installation does not violate Section 806.3 … EXCEPTION 5 to Section 180.2(b)1Bi: Where the attic space above the altered dwelling unit is shared with other dwelling units and the requirements of Section 150.2(b)1A180.2(b)1Bi are not triggered for the other dwelling units. ii. Non Attic Roof. When low-sloped roofs are replaced and recovered, and meets Section 180.2(b)1A or B, the replaced area shall be insulated to R-14 continuous insulation or a U-factor of 0.055 in Climate Zones 1, 2, 4, and 8 through 16. |
| 586 | EXCEPTION 3 to Section 1180.2(b)1Bii: At the drains and other low points, tapered insulation with a thermal resistance less than R-14 may be used, provided that insulation thickness is increased at the high points of the roof so that the average therm… NOTE: Glass replaced in an existing sash and frame or sashes replaced in an existing frame are considered repairs. In these cases, Section 180.2(b) requires that the replacement be at least equivalent to the original in performance. i. Fenestration products installed to replace existing fenestration products of the same total area shall meet either a or b: a. The maximum U-factor, RSHGC, and VT requirements of TABLE 180.2-B, or b. The area-weighted U-factor and RSHGC of TABLE 170.2-A. EXCEPTION 1 to Section 180.2(b)1Ci: In an alteration, where 150 square feet or less of the entire building’s vertical fenestration is replaced, RSHGC and VT requirements of TABLE 180.2-B shall not apply. ii. Alterations that add fenestration and skylight area shall meet the total fenestration area requirements of Section 170.2(a) and the U-factor, RSHGC, and VT requirements of TABLE 180.2-B. EXCEPTION 1 to Section 180.2(b)1Cii: Alterations that add fenestration area of up to 50 square feet shall not be required to meet the total fenestration area requirements of Sections 170.2(a), nor the U-factor, RSHGC, and VT requirements of TABLE 180…. EXCEPTION 2 to Section 180.2(b)1Cii: Alterations that add up to 16 square feet of new skylight area per dwelling unit with a maximum U-factor of 0.55 and a maximum RSHGC of 0.30 area shall not be required to meet the total fenestration area requiremen… |
| 588 | 1. Minimum VT requirements to not apply to multifamily buildings 3 habitable stories or less. |
| 589 | 2. Space Conditioning Systems. A. Space Conditioning Systems Serving Dwelling Units. i. Entirely New or Complete Replacement Space-Conditioning Systems installed as part of an alteration, shall include all the system heating or cooling equipment, including but not limited to: condensing unit, cooling or heating coil, and air handler f… ii. Altered Duct Systems – Duct Sealing: In all Climate Zones, when more than 25 feet of new or replacement space-conditioning system ducts are installed, the ducts shall comply with the applicable requirements of subsections a and b below. New ducts … a. The altered duct system, regardless of location, shall be sealed as confirmed through field verification and diagnostic testing in accordance with all applicable procedures for duct sealing of altered existing duct systems as specified in Reference… I. Entirely New or Complete Replacement Duct System. If the new ducts form an entirely new or complete replacement duct system directly connected to the air handler, the duct system shall meet one of the following requirements: A. The total leakage of the duct system shall not exceed 12 percent of the nominal system air handler airflow as determined utilizing the procedures in Reference Residential Appendix Section RA3.1.4.3.1, or B. The duct system leakage to outside shall not exceed 6 percent of the nominal system air handler airflow as determined utilizing the procedures in Reference Residential Appendix Section RA3.1.4.3.4. Entirely new or complete replacement duct systems installed as part of an alteration shall beare constructed of at least 75 percent new duct material, and up to 25 percent may consist of reused parts from the dwelling unit’s existing duct system, incl… Entirely new or complete replacement duct systems shall also conform to the requirements of Sections 160.2(a)1 and 160.3(b)5L. If the air handler and ducts are located within a vented attic, the requirements of Section 180.2(b)1Bi shall also be met. II. Extension of an Existing Duct System. If the new ducts are an extension of an existing duct system serving multifamily dwellings, the combined new and existing duct system shall meet one of the following requirements: A. The measured duct leakage shall be equal to or less than 15 percent of system air handler airflow as confirmed by field verification and diagnostic testing utilizing the procedures in Reference Residential Appendix Section RA3.1.4.3.1; or B. The measured duct leakage to outside shall be equal to or less than 10 percent of system air handler airflow as confirmed by field verification and diagnostic testing utilizing the procedures in Reference Residential Appendix Section RA3.1.4.3.4; or |
| 590 | C. If it is not possible to meet the duct sealing requirements of either Section 180.2(b)2AiicI or II then all accessible leaks shall be sealed and verified through a visual inspection and a smoke test by a certified HERS Rater utilizing the methods s… EXCEPTION to Section 180.2(b)2AiibII: Duct Sealing. Existing duct systems that are extended, which are constructed, insulated or sealed with asbestos. EXCEPTION 1 to 180.2(b)2Aii: The HERS Rater field verification and HERS Provider data registry requirements of Reference Residential Appendix RA2 and RA3 are not required for multifamily dwelling units in buildings four stories and greater. The instal… iii. Altered Space-Conditioning System – Duct Sealing In all Climate Zones, when a space-conditioning system serving a multifamily dwelling is altered by the installation or replacement of space-conditioning system equipment, including replacement of … a. The measured duct leakage shall be equal to or less than 15 percent of system air handler airflow as determined utilizing the procedures in Reference Residential Appendix Section RA3.1.4.3.1; or b. The measured duct leakage to outside shall be equal to or less than 10 percent of system air handler airflow as determined utilizing the procedures in Reference Residential Appendix Section RA3.1.4.3.4; or c. If it is not possible to meet the duct sealing requirements of either Section 180.2(b)2Aiiia or b, then, all accessible leaks shall be sealed and verified through a visual inspection and a smoke test by a certified HERS Rater utilizing the methods … EXCEPTION 1 to Section 180.2(b)2Aiii: Duct Sealing. Duct systems that are documented to have been previously sealed as confirmed through field verification and diagnostic testing in accordance with procedures in the Reference Residential Appendix RA3.1. EXCEPTION 2 to Section 180.2(b)2Aiii: Duct Sealing. Duct systems with less than 40 linear feet as determined by visual inspection. EXCEPTION 3 to Section 180.2(b)2Aiii: Duct Sealing. Existing duct systems constructed, insulated or sealed with asbestos. EXCEPTION 4 to Section 180.2(b)2Aiii: The HERS Rater field verification and HERS Provider data registry requirements of Reference Residential Appendix RA2 and RA3 are not required for multifamily dwelling units in buildings four stories and greater. T… iv. Altered Space-Conditioning System Mechanical Cooling. When a space-conditioning system is an air conditioner or heat pump that is altered by the installation or replacement of refrigerant-containing system components such as the compressor, conden… a. All thermostats associated with the system shall be replaced with setback thermostats meeting the requirements of Section 110.2(c). b. In Climate Zones 2, 8, 9, 10, 11, 12, 13, 14, and 15, air-cooled air conditioners and air-source heat pumps, including but not limited to ducted split systems, ducted package systems, small duct high velocity air systems, and minisplit systems, sha… |
| 591 | EXCEPTION to Section 180.2(b)2Aivb: Entirely new or complete replacement packaged systems for which the manufacturer has verified correct system refrigerant charge prior to shipment from the factory are not required to have refrigerant charge confirme… I. Minimum system airflow rate shall comply with the applicable subsection A or B below as confirmed through field verification and diagnostic testing in accordance with the procedures specified in Reference Residential Appendix Section RA3.3 or an ap… A. Small duct high velocity systems shall demonstrate a minimum system airflow rate greater than or equal to 250 cfm per ton of nominal cooling capacity; or B. All other air-cooled air conditioner or air-source heat pump systems shall demonstrate a minimum system airflow rate greater than or equal to 300 cfm per ton of nominal cooling capacity; and EXCEPTION 1 to Section 180.2(b)2AivbI: Systems unable to comply with the minimum airflow rate requirement shall demonstrate compliance using the procedures in Section RA3.3.3.1.5; and the system’s thermostat shall conform to the specifications in Sect… EXCEPTION 2 to Section 180.2(b)2AivbI: Entirely new or complete replacement space conditioning systems, as specified by Section 180.2(b)2Ai, without zoning dampers may comply with the minimum airflow rate by meeting the applicable requirements in TABL… II. The installer shall charge the system according to manufacturer’s specifications. Refrigerant charge shall be verified according to one of the following options, as applicable. A. The installer and rater shall perform the standard charge verification procedure as specified in Reference Residential Appendix Section RA3.2.2, or an approved alternative procedure as specified in Section RA1; or B. The system shall be equipped with a fault indicator display (FID) device that meets the specifications of Reference Joint Appendix JA6. The installer shall verify the refrigerant charge and FID device in accordance with the procedures in Reference … C. The installer shall perform the weigh-in charging procedure as specified by Reference Residential Appendix Section RA3.2.3.1 provided the system is of a type that can be verified using the RA3.2.2 standard charge verification procedure and RA3.3 ai… EXCEPTION 1 to Section 180.2(b)2AivbII: When the outdoor temperature is less than 55 degrees F and the installer utilizes the weigh-in charging procedure in Reference Residential Appendix Section RA3.2.3.1to demonstrate compliance, the installer may e… |
| 592 | EXCEPTION 2 to Section 180.2(b)2Aivb: The HERS Rater field verification and HERS Provider data registry requirements of Reference Residential Appendix RA2 and RA3 are not required for multifamily dwelling units in buildings four stories and greater. T… v. Altered Space-Heating System. Altered or replacement space-heating systems shall not use electric resistance as the primary heat source.comply with Section 170.2(c)3M. EXCEPTION 1 to Section 180.2(b)2Av: A nNon-ducted electric resistance space heating systems, if the existing space heating system is electric resistance. EXCEPTION 2 to Section 180.2(b)2Av: A dDucted electric resistance space heating systems, if the existing space heating system is electric resistance and a ducted space cooling system is not being replaced or installed where only the electric resistanc… EXCEPTION 3 to Section 180.2(b)2Av: An eElectric resistance space heating systems, if the existing space heating system is electric resistance in Climate Zones 6, 7, 8, or 15. B. Common Use Area Space Conditioning Systems i. New or Replacement Space-Conditioning Systems or Components other than new or replacement space-conditioning system ducts shall meet the requirements of Sections 170.2(c)1, 2, and 4, applicable to the systems or components being altered. For compli… |
| 593 | EXCEPTION 1 to Section 180.2(b)2Bi. Section 180.2(b)2Av does not apply to replacement of electric reheat of equivalent or lower capacity electric resistance space heaters, when natural gas is not available. |
| 594 | EXCEPTION 2 to Section 180.2(b)2Bi. Section 170.2(c)4L is not applicable to new or replacement space conditioning systems. ii. Altered Duct Systems. When new or replacement space-conditioning system ducts are installed to serve an existing building, the new ducts shall meet the requirements of Section 160.3(c)2 and meet a or b below: a. RESERVED. b. Entirely new or replacement duct systems installed as part of an alteration shall be leakage-tested in accordance with Section 160.2(c)2H. Entirely new or replacement duct systems installed as part of an alteration shall be constructed of at least… c. If the new ducts are an extension of an existing duct system, the combined new and existing duct system meets the criteria in Subsections I, II, and III below. The duct system shall be sealed to a leakage rate not to exceed 15 percent of the nomina… I. The duct system provides conditioned air to an occupiable space for a constant volume, single zone, space-conditioning system; and II. The space conditioning system serves less than 5,000 square feet of conditioned floor area; and III. The combined surface area of the ducts located in the following spaces is more than 25 percent of the total surface area of the entire duct system: A. Outdoors; B. In a space directly under a roof that C. Has a U-factor greater than the U-factor of the ceiling, or if the roof does not meet the requirements of Section 140.3(a)1B, or D. Has fixed vents or openings to the outside or unconditioned spaces; or E. In an unconditioned crawlspace; or F. In other unconditioned spaces. EXCEPTION 1 to Section 180.2(b)2Biib: When it is not possible to achieve the duct leakage criteria in Section 180.2(b)2Biib, all accessible leaks shall be sealed and verified through a visual inspection and a smoke test performed by a certified HERS R… EXCEPTION 2 to Section 180.2(b)2Biib: Duct Sealing. Existing duct systems that are extended, which are constructed, insulated or sealed with asbestos are exempt from the requirements of subsection 180.2(b)2Biib. iii. Altered Space-Conditioning Systems. When a space-conditioning system is altered by the installation or replacement of space-conditioning system equipment (including replacement of the air handler, outdoor condensing unit of a split system air con… |
| 595 | a. For all altered units where the existing thermostat does not comply with the requirements for demand responsive controls specified in Section 110.12, the existing thermostat shall be replaced with a demand responsive thermostat that complies with S… b. The duct system that is connected to the new or replaced space-conditioning system equipment shall be sealed, if the duct system meets the criteria of Section 170.2(c)4Ji, as confirmed through field verification and diagnostic testing, in accordanc… 3. Hot Water Systems. Altered or replacement water-heating systems or components serving individual dwelling units shall meet the applicable requirements below: A. Pipe Insulation. For newly installed piping and existing accessible piping, the insulation requirements of Section 160.4(f) shall be met. B. Distribution System. For recirculation distribution system serving individual dwelling units, only Demand Recirculation Systems with manual on/off control as specified in the Reference Appendix RA4.4.9 shall be installed. C. Water heating system. The water heating system shall meet one of the following: i. A natural gas or propane water-heating system; or ii. A single heat pump water heater. The storage tank shall not be located outdoors and be placed on an incompressible, rigid insulated surface with a minimum thermal resistance of R-10. The water heater shall be installed with a communication inter… iii. A single heat pump water heater that meets the requirements of NEEA Advanced Water Heater Specification Tier 3 or higher; or iv. If the existing water heater is an electric resistance water heater, a consumer electric water heater. v. A water-heating system determined by the Executive Director to use no more energy than the one specified in Section 180.2(b)3Ci through iii above; or if no natural gas is connected to the existing water heater location, a water-heating system dete… 4. Lighting. |
| 596 | A. Dwelling Unit Lighting. The altered lighting system shall meet the lighting requirements of Section 160.5(a). The altered luminaires shall meet the luminaire efficacy requirements of Section 160.5(a) and TABLE 160.5-A. Where existing screw base s… B. Common Use Area – Lighting, Sign Lighting, and Electrical Power Distribution Systems. i. Spaces with lighting systems installed for the first time shall meet the applicable requirements of Sections 110.9, 160.5(b)1, 160.5(b)2, 160.5(b)3, 160.5(b)4, 160.5(c), 160.5(e), 170.2(b), and 170.2(e)1, and thru 170.2(e)62. ii. When the requirements of Section 160.5(b)4D are triggered by the addition of skylights to an existing building and the lighting system is not recircuited, the daylighting control need not meet the multi-level requirements in Section 160.5(b)4D. iii. New internally and externally illuminated signs shall meet the requirements of Sections 110.9, 160.5(d) and 170.2(e)37. iv. Altered Indoor Lighting Systems. Alterations to indoor lighting systems that include 10% or more of the luminaires serving an enclosed space shall meet the requirements of a, b, or c below: a. The alteration shall comply with the indoor lighting power requirements specified in Section 170.2(e)1 thru 4A and the lighting control requirements specified in TABLE 180.2-E; or b. The alteration shall not exceed 80% of the indoor lighting power requirements specified in Section 170.2(e)1 thru 4, and shall comply with the lighting control requirements specified in TABLE 180.2-DE; or c. The alteration shall be a one-for-one luminaire alteration within a building or tenant space of 5,000 square feet or less, the total wattage of the altered luminaires shall be at least 40% lower compared to their total pre-alteration wattage, and t… Alterations to indoor lighting systems shall not prevent the operation of existing, unaltered controls, and shall not alter controls to remove functions specified in Section 160.5(b)4. Alterations to lighting wiring are considered alterations to the lighting system. Alterations to indoor lighting systems are not required to separate existing general, floor, wall, display, or ornamental decorative lighting on shared circuits or cont… EXCEPTION 1 to Section 180.2(b)4Biv. Alteration of portable luminaires, luminaires affixed to moveable partitions, or lighting excluded as specified in Section 170.2(e)2C. EXCEPTION 2 to Section 180.2(b)4Biv. Any enclosed space with only one luminaire. EXCEPTION 3 to Section 180.2(b)4Biv. Any alteration that would directly cause the disturbance of asbestos, unless the alteration is made in conjunction with asbestos abatement. EXCEPTION 4 to Section 180.2(b)4Biv. Acceptance testing requirements of Section 160.5(e) are not required for alterations where lighting controls are added to control 20 or fewer luminaires. EXCEPTION 5 to Section 180.2(b)4Biv. Any alteration limited to adding lighting controls or replacing lamps, ballasts, or drivers. EXCEPTION 6 to Section 180.2(b)4Biv. One-for-one luminaire alteration of up to 50 luminaires either per complete floor of the building or per complete tenant space, per annum. |
| 597 | v. Alterations to existing outdoor lighting systems in a lighting application listed in TABLES 170.2- R or 170.2- S shall meet the applicable requirements of Sections 160.5(b)1, 160.5(b)2, 160.5(b)3, 160.5(c)1, and 160.5(e), and: a. In alterations that increase the connected lighting load, the added or altered luminaires shall meet the applicable requirements of Section 160.5(c)2 and the requirements of Section 170.2(e)2 6 for general hardscape lighting or for the specific lig… b. In alterations that do not increase the connected lighting load, where the greater of 5 luminaires or 10 percent or more of the existing luminaires are replaced in a general hardscape or a specific lighting application, the alterations shall meet t… I. In parking lots and outdoor sales lots where the bottom of the luminaire is mounted 24 feet or less above the ground, the replacement luminaires shall comply with Section 160.5(c)2A and Section 160.5(c)2C; II. For all other lighting applications and parking lots and outdoor sales lots where the bottom of the luminaire is mounted greater than 24 feet above the ground and for all other lighting applications, the replacement luminaires shall comply with Se… c. In alterations that do not increase the connected lighting load, where the greater of 5 luminaires or 50 percent or more of the existing luminaires are replaced in general hardscape or a specific application, the replacement luminaires shall meet t… EXCEPTION 1 to Section 180.2(b)4Bvc. Alterations where the replacement luminaires have at least 40 percent lower power consumption compared to the original luminaires are not required to comply with the lighting power allowances of Section170.2(e)26. EXCEPTION 3 to Section180.2(b)4Bv. Acceptance testing requirements of Section 160.5(e) are not required for alterations where controls are added to 20 or fewer luminaires. vi. Alterations to existing internally and externally illuminated signs that increase the connected lighting load, replace and rewire more than 50 percent of the ballasts, or relocate the sign to a different location on the same site or on a different… EXCEPTION to Section 180.2(b)4Bvi. Replacement of parts of an existing sign, including replacing lamps, the sign face or ballasts, that do not require rewiring or that are done at a time other than when the sign is relocated, is not an alteration subj… vii. Alterations to existing electrical power distribution systems shall meet the applicable requirements of the following Sections: a. Service Electrical Metering. New or replacement electrical service equipment shall meet the requirements of Section 160.6(a) applicable to the electrical power distribution system altered; and |
| 598 | b. Separation of Electrical Circuits for Electrical Energy Monitoring. For entirely new or complete replacement of electrical power distribution systems, the entire system shall meet the applicable requirements of Section 160.6(b); and c. Voltage Drop. Alterations of feeders and branch circuits where the alteration includes addition, modification, or replacement of both feeders and branch circuits, the altered circuits shall meet the requirements of Section 160.6(c); and EXCEPTION to Section 180.2(b) 4Bviic: Voltage drop permitted by California Electrical Code Sections 647.4, 695.6 and 695.7. d. Circuit Controls for 120-Volt Receptacles and Controlled Receptacles. For entirely new or complete replacement of electrical power distribution systems, the entire system shall meet the applicable requirements of Section 160.6(d). |
| 601 | (c) Performance approach. The altered component(s) and any newly installed equipment serving the alteration shall meet the applicable requirements of subsections 1, 2, and 3 below. 1. The altered components shall meet the applicable requirements of Sections 110.0 through 110.9, Section 160.0, 160.1, 160.2(c) and (d), 160.3(a) through 160.3(b)5J, 160.3(b)6, 160.3(c), and 160.5. Entirely new or complete replacement mechanical vent… 2. The standard design for an altered component shall be the higher efficiency of existing conditions or the requirements of Section 180.2(b). For components not being altered, the standard design shall be based on the unaltered existing conditions su… 3. The proposed design shall be based on the actual values of the altered components. 1. If an existing component must be replaced with a new component, that component is considered an altered component for the purpose of determining the standard design altered component energy budget and must meet the requirements of Section 180.2(c)2. 2. The standard design shall assume the same geometry and orientation as the proposed design. 3. The “existing efficiency level” modeling rules, including situations where nameplate data is not available, are described in the applicable Residential or Nonresidential ACM Approval Manual. |
| 602 | Section 180.3 – Repairs |
| 603 | Section 180.4 – Whole Building |
| 604 | 2022 P6 Appendix and Index CALIFORNIA MECHANICAL CODE, CALIFORNIA CODE OF REGULATIONS, TITLE 24, PART 4 CHAPTER 6, DUCT SYSTEMS |
| 605 | APPENDIX 1-A STANDARDS AND DOCUMENTS REFERENCED IN THE ENERGY CODE |
| 616 | APPENDIX 1-B ENERGY COMMISSION DOCUMENTS INCORPORATED BY REFERENCE IN THEIR ENTIRETY |
| 617 | INDEX |
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