The CMC provides complete requirements for the installation and maintenance of heating, ventilating, cooling, and refrigeration system, while at the same time allowing latitude for innovations and new technologies. . Key changes to the 2022 CMC include: New guards and rails requirements for installation of equipment and appliances on roofs A2L refrigerants requirements for human comfort and machinery room applications New ventilation requirements for transient and nontransient occupancies New ventilation requirements for indoor air quality for residential occupancies Revisions to the requirements for air ducts, including factory-made air ducts and dampers New provisions for factory-built grease ducts New provisions for refrigeration systems, including pressure-limiting devices and hydrostatic expansion Revisions to the sizing requirements for natural gas and propane piping systems Modifications to the pressure rating requirements for hydronic piping applications New requirements for fuel gas piping appliance shutoff valves, test pressure and overpressure protection devices New tube fastener provisions for radiant heating and cooling New requirements for residential compressed natural gas (CNG) fueling systems New fire-extinguishing equipment and carbon monoxide detection requirements for exhaust systems

PDF Catalog

PDF Pages	PDF Title
2	Preface
4	Acknowledgements
5	California Code of Regulations Title 24
7	How to Distinguish Between Model Code Language and California Amendments
8	California Matrix Adoption Tables
10	How to Distinguish Model Code Language from California Amendments
12	Forward
14	Format of the Uniform Mechanical Code
20	Committee on Uniform Mechanical Code
21	Section Relocation
22	Related Publications and Services
25	Table of Contents Chapter 1 — Division I California Administration Chapter 1 — Division II Administration
26	Chapter 2 — Definitions Chapter 3 — General Regulations
27	Chapter 4 — Ventilation Air
29	Chapter 5 — Exhaust Systems
31	Chapter 6 — Duct Systems Chapter 7 — Combustion Air Chapter 8 — Chimneys and Vents
32	Chapter 9 — Installation of Specific Appliances
35	Chapter 10 — Boilers and Pressure Vessels
36	Chapter 11 — Refrigeration
38	Chapter 12 — Hydronics
39	Chapter 13 — Fuel Gas Piping
41	Chapter 14 — Process Piping Chapter 15 — Solar Energy Systems Chapter 16 — Stationary Power Plants Chapter 17 — Referenced Standards
42	Appendices — Table of Contents Appendix A — Residential Plans Examiner Review Form for HVAC System Design Appendix B — Procedures to be Followed to Place Gas Equipment in Operation Appendix C — Installation and Testing of Oil (Liquid) Fuel-Fired Equipment Appendix D — Fuel Supply: Manufactured/Mobile Home Parks and Recreational Vehicle Parks Appendix E — Sustainable Practices Appendix F — Geothermal Energy Systems Appendix G — Sizing of Venting Systems and Outdoor Combustion and Ventilation Opening Design Appendix H — Example Calculation of Outdoor Air Rate Useful Tables Index History Note Appendix
44	Chapter 1 Division I — Administration
46	1.1.0 — General. 1.1.1 — Title. 1.1.2 — Purpose. 1.1.3 — Scope. 1.1.3.1 — Nonstate-Regulated Buildings, Structures, and Applications. 1.1.3.2 — State-Regulated Buildings, Structures, and Applications.
47	1.1.4 — Appendices. 1.1.5 — Referenced Codes. 1.1.6 — NonBuilding Standards, Orders and Regulations. 1.1.7 — Order of Precedence and Use. 1.1.7.1 — Differences. 1.1.7.2 — Specific Provisions. 1.1.7.3 — Conflicts. 1.1.7.3.1 — Detached One- and Two-Family Dwellings.
48	1.1.8 — City, County, or City and County Amendments, Additions or Deletions. 1.1.8.1 — Findings and Filings. 1.1.8.2 — California Energy Code Requirements for Locally Adopted Energy Standards. 1.1.9 — Effective Date of This Code. 1.1.10 — Availability of Codes. 1.1.11 — Format. 1.1.12 — Validity. 1.2.0 — Building Standards Commission. 1.2.1 — BSC.
49	1.2.1.1 — State Building. 1.2.1.2 — Enforcement. 1.2.1.3 — Enforcement, Reserved for DGS. 1.2.1.4 — Adopting Agency Identification. 1.2.2 — BSC-CG. 1.2.3 — Alternative Materials, Design, and Methods of Construction and Equipment. 1.2.3.1 — Research Reports. 1.2.3.2 — Tests.
50	1.3.0 — Reserved for Corrections Standards Authority. 1.4.0 — Department of Consumer Affairs. 1.4.1 — Specific scope of application of the agency responsiblefor enforcement, the enforcement agency, and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated. 1.4.2 — Adopting Agency Identification. 1.5.0 — Reserved for California Energy Commission. 1.6.0 — Reserved for Department of Food and Agriculture. 1.7.0 — California Department of Public Health. 1.7.1 — Specific scope of application of the agency responsible for enforcement, the enforcement agency, and the specific authority to adopt and enforce such provisions of this code, unless otherwise stated. 1.7.2 — Adopting Agency Identification. 1.8.0 — Department of Housing and Community Development [HCD]. 1.8.1 — Purpose. 1.8.2 — Authority and Abbreviations. 1.8.2.1 — General. 1.8.2.1.1 — Housing Construction. 1.8.2.1.2 — Housing Accessibility.
51	1.8.2.1.3 — Permanent Buildings in Mobilehome Parks and Special Occupancy Parks. 1.8.3 — Local Enforcing Agency. 1.8.3.1 — Duties and Powers. 1.8.3.2 — Laws, Rules, and Regulations. 1.8.3.2.1 — State Housing Law.
52	1.8.3.2.2 — Mobilehome Parks Act. 1.8.3.2.3 — Special Occupancy Parks Act. 1.8.3.2.4 — Employee Housing Act. 1.8.3.2.5 — Factory-Built Housing Law. 1.8.4 — Permits, Fees, Applications, and Inspections. 1.8.4.1 — Permits. 1.8.4.2 — Fees. 1.8.4.3 — Plan Review and Time Limitations. 1.8.4.3.1 — Retention of Plans. 1.8.4.4 — Inspections. 1.8.5 — Right of Entry for Enforcement. 1.8.5.1 — General.
53	1.8.6 — Local Modification by Ordinance or Regulation. 1.8.6.1 — General. 1.8.6.2 — Findings, Filings, and Rejections of Local Modifications. 1.8.7 — Alternate Materials, Designs, Tests, and Methods of Construction. 1.8.7.1 — General. 1.8.7.2 — Local Building Departments. 1.8.7.2.1 — Approval of Alternates.
54	1.8.7.3 — Department of Housing and Community Development. 1.8.8 — Appeals Board. 1.8.8.1 — General. 1.8.8.2 — Definitions. 1.8.8.3 — Appeals. 1.8.9 — Unsafe Buildings or Structures. 1.8.9.1 — Authority to Enforce.
55	1.8.9.2 — Actions and Proceedings. 1.8.10 — Other Building Regulations. 1.8.10.1 — Existing Structures. 1.8.10.2 — Moved Structures. 1.9.0 — Division of the State Architect. 1.9.1 — Reserved for the Division of the State Architect – Access Compliance. 1.9.2 — Division of the State Architect – Structural Safety. 1.9.2.1 — DSA-SS [Division of the State Architect – Structural Safety]. 1.9.2.1.1 — Adopting Agency Identification. 1.9.2.2 — DSA-SS/CC [Division of the State Architect –Structural Safety/Community Colleges].
56	1.9.2.2.1 — Adopting Agency Identification. 1.10.0 — Office of Statewide Health Planning and Development. 1.10.1 — OSHPD 1 and OSHPD 1R. 1.10.1.1 — Applicable Administrative Standards: 1.10.1.2 — Applicable Building Standards. 1.10.1.3 — Adopting Agency Identification. 1.10.2 — OSHPD 2. 1.10.2.1 — Applicable Administrative Standards: 1.10.2.2 — Applicable Building Standards. 1.10.2.3 — Adopting Agency Identification. 1.10.3 — OSHPD 3. 1.10.3.1 — Applicable Administrative Standards. 1.10.3.2 — Applicable Building Standards. 1.10.3.3 — Adopting Agency Identification. 1.10.4 — OSHPD 4.
57	1.10.4.1 — Applicable Administrative Standards: 1.10.4.2 — Applicable Building Standards. 1.10.4.3 — Adopting Agency Identification. 1.10.5 — OSHPD 5. 1.10.5.1 — Applicable Administrative Standards. 1.10.5.2 — Applicable Building Standards. 1.10.5.3 — Adopting Agency Identification. 1.11.0 — Office of the State Fire Marshal. 1.11.1 — SFM – Office of the State Fire Marshal.
58	1.11.2 — Duties and Powers of the Enforcing Agency. 1.11.2.1 — Enforcement. 1.11.2.1.1 — The responsibility for enforcement of building standards adopted by the State Fire Marshaland published in the California Building Standards Code relating to fire and panic safety and other regulations of the State Fire Marshal shall except asprovided in Section 1.11.2.1.2 be as follows: 1.11.2.1.2 — Pursuant to Health and Safety Code Section 13108, and except as otherwise provided in this section, building standards adopted by the State Fire Marshal published in the California Building Standards Code relating to fire and panic safety
59	1.11.2.1.3 — Pursuant to Health and Safety Code Section 13112, any person who violates any order, rule or regulation of the State Fire Marshal is guilty of a misdemeanor punishable by a fine of not less than $100.00 or more than $500.00, or by imprisonment for not less than six months, or by both. 1.11.2.2 — Right of Entry. 1.11.2.3 — More Restrictive Fire and Panic Safety Building Standards. 1.11.2.3.1 — Any fire protection district organized pursuant to Health and Safety Code Part 2.7 (commencing with Section 13800) of Division 12 may adopt building standards relating to fire and panicsafety that are more stringent than those building standards adopted by the State Fire Marshal and contained in the California Building Standards Code. 1.11.2.3.2 — Any fire protection district that proposes to adopt an ordinance pursuant to this section shall, not less than 30 days prior to noticing a proposed ordinance for public hearing, provide a copy of that ordinance, together with the adopted findings made pursuant to Section 1.11.2.3.1, to the city, county, or city and county where the ordinance will apply. 1.11.2.3.3 — The fire protection district shall transmit the adopted ordinance to the city, county, or city and county where the ordinance will apply. The legislative body of the city, county, or city and county may ratify, modify or deny an adopted ordinance and transmit its determination to the district within 15 days of the determination.
60	1.11.2.4 — Request for Alternate Means of Protection. 1.11.2.5 — Appeals. 1.11.3 — Construction Documents. 1.11.3.1 — Public Schools. 1.11.3.2 — Movable Walls and Partitions. 1.11.3.3 — New Construction High-Rise Buildings: 1.11.3.4 — Existing High-Rise Buildings: 1.11.3.5 — Retention of Plans. 1.11.4 — Fees. 1.11.4.1 — Other Fees. 1.11.4.2 — Large Family Day Care.
61	1.11.4.3 — High-Rise. 1.11.4.4 — Fire Clearance Preinspection. 1.11.4.5 — Care Facilities. 1.11.4.6 — Requests of the Office of the State Fire Marshal. 1.11.5 — Inspections. 1.11.5.1 — Existing Group I-1 or R Occupancies. 1.11.6 — Certificate of Occupancy. 1.11.7 — Temporary Structures and Uses. 1.11.8 — Service Utilities. 1.11.9 — Stop Work Order 1.11.10 — Unsafe Buildings, Structures, and Equipment. 1.11.11 — Adopting Agency Identification. 1.12.0 — Reserved for the State Librarian. 1.13.0 — Reserved for the Department of Water Resources. 1.14.0 — Reserved for the State Lands Commission.
62	Chapter 1 Division II — Administration 101.0 — General. 101.1 — Title. 101.2 — Scope. 101.3 — Purpose. 101.4 — Unconstitutional. 101.5 — Validity. 102.0 — Applicability. 102.1 — Conflicts Between Codes. 102.2 — Existing Installations. 102.3 — Maintenance. 102.3.1 — Commercial HVAC Systems. 102.3.2 — Residential HVAC Systems. 102.4 — Additions, Alterations, Renovations, or Repairs. 102.5 — Health and Safety. 102.6 — Changes in Building Occupancy. 102.7 — Moved Structures. 102.8 — Appendices.
63	103.0 — Duties and Powers of the Authority Having Jurisdiction. 103.1 — General. 103.2 — Liability. 103.3 — Applications and Permits. 103.3.1 — Licensing. 103.4 — Right of Entry. 104.0 — Permits. 104.1 — Permits Required. 104.2 — Exempt Work. 104.3 — Application for Permit.
64	104.3.1 — Construction Documents. 104.3.2 — Plan Review Fees. 104.3.3 — Time Limitation of Application. 104.4 — Permit Issuance. 104.4.1 — Approved Plans or Construction Documents. 104.4.2 — Validity of Permit. 104.4.3 — Expiration.
65	104.4.3.1 — Expiration. 104.4.4 — Extension. 104.4.5 — Suspension or Revocation. 104.4.6 — Retention of Plans. 104.5 — Fees. 104.5.1 — Work Commencing Before Permit Issuance. 104.5.2 — Investigation Fees. 104.5.3 — Fee Refunds. 105.0 — Inspections and Testing. 105.1 — General. 105.2 — Required Inspections. 105.2.1 — Uncovering.
66	105.2.2 — Other Inspections. 105.2.3 — Inspection Requests. 105.2.4 — Advance Notice. 105.2.5 — Responsibility. 105.2.6 — Reinspections. 105.3 — Testing of Systems. 105.3.1 — Defective Systems. 105.3.2 — Retesting. 105.3.3 — Approval. 105.4 — Connection to Service Utilities. 106.0 — Violations and Penalties. 106.1 — General. 106.2 — Notices of Correction or Violation.
67	106.3 — Penalties. 106.4 — Stop Orders. 106.5 — Authority to Disconnect Utilities in Emergencies. 106.6 — Authority to Condemn. 107.0 — Board of Appeals. 107.1 — General. 107.2 — Limitations of Authority.
68	Table Table 104.5 — Mechanical Permit Fees
70	Chapter 2 — Definitions
72	201.0 — General. 201.1 — Applicability. 202.0 — Definition of Terms. 202.1 — General. 203.0 – A –
73	204.0 – B –
74	205.0 – C –
76	206.0 – D –
77	207.0 – E – 208.0 – F –
78	209.0 – G –
79	210.0 – H – 211.0 – I –
80	212.0 – J – 213.0 – K – 214.0 – L –
81	215.0 – M – 216.0 – N –
82	217.0 – O – 218.0 – P –
83	219.0 – Q – 220.0 – R –
84	221.0 – S –
85	222.0 – T – 223.0 – U – 224.0 – V –
86	225.0 – W – 226.0 – X – 227.0 – Y – 228.0 – Z –
88	Chapter 3 — General Regulations
90	301.0 — General. 301.1 — Applicability. 301.2 — Approval. 301.3 — Design of Equipment. 301.4 — Electrical Connections. 301.5 — Oil-Burning Appliances. 301.6 — Personnel Protection. 301.7 — OSHPD 1R [OSHPD 1R]. 302.0 — Materials – Standards and Alternates. 302.1 — Minimum Standards. 302.1.1 — Marking. 302.1.2 — Standards. 302.1.3 — Existing Buildings. 302.2 — Alternate Materials and Methods of Construction Equivalency.
91	302.2.1 — Testing. 302.2.1.1 — Tests. 302.2.1.2 — Request by the Authority Having Jurisdiction. 302.3 — Alternative Engineered Design. 302.3.1 — Permit Application. 302.3.2 — Technical Data. 302.3.3 — Design Documents. 302.3.4 — Design Approval. 302.3.5 — Design Review. 302.3.6 — Inspection and Testing. 303.0 — Installation. 303.1 — Listed Appliances. 303.2 — Closet or Alcove Installations. [Not adopted for OSHPD 1, 1R, 2, 3, 4 & 5] 303.3 — Unlisted Appliances. 303.4 — Anchorage of Appliances.
92	303.5 — Movement. 303.6 — Identification of Equipment. 303.7 — Liquefied Petroleum Gas Facilities. 303.7.1 — Liquefied Petroleum Gas [LP-Gas] Appliances. [HCD 1 & HCD 2] 303.8 — Appliances on Roofs. 303.8.1 — Load Capacity. 303.8.2 — Fasteners. 303.8.3 — Installation of Appliances on Roofs. 303.8.4 — Edge of Roof Clearance. 303.8.4.1 — Guards and Rails. 303.8.5 — Electrical Power. 303.8.6 — Platform or Walkway. 303.9 — Avoiding Strain on Gas Piping. 303.10 — Clearances. 303.10.1 — Clearance Reduction. 303.10.1.1 — Type I Hood Exhaust System. 303.10.1.2 — Product Conveying Ducts.
93	303.10.1.3 — Solid-Fuel Burning Appliances. 303.11 — Installation in Commercial Garages. 303.11.1 — Repair Garages. 303.12 — Installation in Aircraft Hangars. 304.0 — Accessibility for Service. 304.1 — General. 304.2 — Sloped Roof. 304.3 — Access to Appliances on Roofs. 304.3.1 — Access. 304.3.1.1 — Access Type. 304.3.1.2 — Permanent Ladders. 304.3.2 — Permanent Lighting. 304.4 — Appliances in Attics and Under-Floor Spaces. 304.4.1 — Length of Passageway. 304.4.2 — Width of Passageway. 304.4.3 — Work Platform. 304.4.4 — Lighting and Convenience Outlet.
94	305.0 — Location. 305.1 — Installation in Residential Garages. 305.1.1 — Physical Damage. 305.1.2 — Access from the Outside. 305.1.3 — Cellulose Nitrate Plastic Storage. 305.2 — Pit Location. 305.3 — Flood Hazard Areas. 305.3.1 — Coastal High Hazard Areas. 305.3.2 — Air Exhaust and Intake Openings. 305.4 — Elevator Shaft. 305.5 — Drainage Pan. 306.0 — Automatic Control Devices. 306.1 — General. 306.2 — Building Automation Systems. [OSHPD 1]
95	307.0 — Labeling. 307.1 — Fuel-Burning Appliances. 307.2 — Electric Heating Appliances. 307.3 — Heat Pump and Electric Cooling Appliances. 307.4 — Absorption Units. 308.0 — Improper Location. 308.1 — General. 309.0 — Workmanship. 309.1 — Engineering Practices. 309.2 — Concealing Imperfections. 309.3 — Installation Practices. 310.0 — Condensate Wastes and Control. 310.1 — Condensate Disposal.
96	310.1.1 — Condensate Pumps. 310.2 — Condensate Control. 310.2.1 — Protection of Appurtenances. 310.3 — Condensate Waste Pipe Material and Sizing. 310.3.1 — Cleanouts. 310.4 — Appliance Condensate Drains. 310.5 — Point of Discharge. 310.6 — Condensate Waste From Air-Conditioning Coils. 310.7 — Plastic Fittings. 311.0 — Heating or Cooling Air System. 311.1 — Source. Tables Table 310.3 — Minimum Condensate Pipe Size
97	311.2 — Air Filters. 311.3 — Prohibited Source. 311.4 — Return-Air Limitations. 311.5 — California Energy Code Requirements for Residential Air Filtration. 312.0 — Plumbing Connections. 312.1 — General. 313.0 — Hangers and Supports. 313.1 — General. 313.2 — Material. 313.3 — Suspended Piping. 313.4 — Alignment. 313.5 — Underground Installation. 313.6 — Hanger Rod Sizes. 313.7 — Gas Piping. Table 313.6 — Hanger Rod Sizes
98	314.0 — Balancing. 314.1 — General. 315.0 — Louvers in Hurricane Prone Regions. 315.1 — General. 315.1.1 — Testing. 315.1.2 — Impact Resistance Test. 316.0 — Protection of Piping, Tubing, Materials, and Structures. 316.1 — General. 316.2 — Installation. 316.3 — Corrosion, Erosion, and Mechanical Damage. 316.4 — Protectively Coated Pipe. 316.5 — Fire-Resistant Construction. 316.6 — Steel Nail Plates. 316.7 — Sleeves. 316.7.1 — Building Loads. 316.7.2 — Exterior Walls. 316.8 — Firewalls. 316.9 — Structural Members. 316.10 — Rodentproofing. 316.11 — Metal Collars. 317.0 — Trenching, Excavation, and Backfill. 317.1 — Trenches. 317.2 — Tunneling and Driving.
99	317.3 — Open Trenches. 317.4 — Excavations. 318.0 — Scope. 318.1 — Applicability. 318.2 — Services/Systems and Utilities. 319.0 — Steam and Hot-Water Systems. 319.1 — Requirements for Hospitals and Optional Services Provided in Correctional Treatment Centers. [OSHPD 1, 1R, 4 & 5] 319.1.1 — Boilers shall have the capacity, based upon the rest ratings published by the Hydronics Institute or an other acceptable national standard to supply the normal operating requirements of all connected systems and equipment. 319.1.2 — A minimum of two boilers shall be provided. The arrangement of boilers shall be based on the capacity and capability of a boiler or boilers to operate all systems during-periods of breakdown or maintenance of anyone boiler. 319.1.3 — Boiler systems providing space heating shall be designed to maintain a minimum temperature of 60°F (15.6°C) in general patient areas and the temperatures specified in Table 4-A for sensitive areas during periods of breakdown or maintenance of any one boiler. 319.1.4 — Boiler feed pumps, condensate return pumps, fuel oil pumps, and heating circulating pumps shall be connected and installed to provide stand by service in the event of pump failure. Installation of duplex pumps or provision of a spare pump will meet this requirement. 319.1.5 — At least two sources of heat (e.g. two pieces of equipment) shall be provided for supplying essential services such as sterilizers, hot water for dishwashing, and domestic hot water for minimum patient service, such as handwashing and baths. Booster heaters for dishwashing providing 125°F to 180°F (52°C to 82°C) water may be counted as the second source of heat for that service. 319.2 — Requirements for Skilled Nursing, Intermediate Care Facilities and Basic Services Provided in Correctional Treatment Centers. [OSHPD 2 & 4] 319.2.1 — Boilers, if provided, shall accommodate Section 319.1. 319.2.2 — Two or more interconnected water heaters are an acceptable means to provide two sources of heat for hot water (See Section 319.1.5). 320.0 — Air Conditioning and Heating Systems. 320.1 — Requirements for Hospitals and Optional Services Provided in Correctional Treatment Centers. [OSHPD 1, 1R, 4 & 5] 320.1.1 — The systems shall be designed to provide the temperatures and relative humidity for sensitive areas or rooms shown in Table 4-A. 320.1.2 — Heating systems shall be designed based on the“Heating DB 99.6%” column of the Climatic Design Data in ASHRAE Handbook-Fundamentals. The systems shall be thermostatically controlled with appropriate zoning to achieve the above conditions. 320.1.3 — Cooling systems shall be designed based on the 0.4% columns of the four Annual Design Conditionstitled Cooling, Evaporation, Dehumidification, and Enthalpy shown by the Climate Design Data in ASHRAE Handbook-Fundamentals. 320.2 —Requirements for Skilled Nursing, Intermediate Care Facilities and Basic Services Provided in Correctional Treatment Centers. [OSHPD 2 & 4] 320.2.1 — Systems shall accommodate the provisions of Sections 320.1.2 through 320.1.3.
100	320.2.2 — Where air conditioning is provided, the system shall be thermostatically controlled in one or more zones. 320.3 — Requirements for Outpatient Facilities and Licensed Clinics. [OSHPD 3] 320.3.1 — The system shall be designed to provide the temperature and humidities for sensitive areas for rooms shown in Table 4-A. 320.4 — Telephone and Technology Equipment Centers. [OSHPD 1 & 4] 320.4.1 — Power for HVAC systems serving the room(s) shall be supplied by the Equipment Branch pursuant to the California Electrical Code. 320.4.2 — Mechanical equipment or fixtures that are not directly related to the support of the room shall not be installed in or pass through the room. 320.4.3 — HVAC systems shall be provided to maintain environmental conditions recommended in ASHRAE’s Thermal Guidelines for Data Processing Environment and the requirements of the specific equipment installed. 320.4.4 — Technology equipment centers shall have redundant cooling systems each of sufficient capacity to provide required cooling during periods of breakdown or maintenance of either system. 320.5 — Psychiatric Services. [OSHPD 1, 1R, 2, 4 & 5] 321.0 — Essential Mechanical Provisions. [OSHPD 1, 1R, 2, 3 (Surgical Clinics only) 4 & 5] 321.1 — (Does not apply to OSHPD 3 surgical clinic.) All heating equipment and fans necessary to maintain a minimum temperature of 60°F (15.6°) in patient areas which are not specified in Section 322.0. 321.2 — All heating equipment and fans necessary to maintain the minimum temperatures listed in Table 4-A for sensitive areas specified in Section 322.0. 321.3 — Equipment necessary for humidification of the area slisted in Section 322.0. 321.4 — All supply, return, and exhaust fans required to maintain the positive and negative air balances as required in Table 4-A. 321.5 — All control components and control systems necessary for the normal operation of equipment required to have essential electrical power. 321.6 — Alarms for airborne infection isolation rooms and protective environment rooms. 322.0 — Sensitive Areas or Rooms. [OSHPD 1, 1R, 2, 3 (Surgical Clinics) 4 & 5] 322.1 — The following conditions shall be met for sensitive areas or rooms: 323.0 — Mechanical Equipment Schedules. [OSHPD 1, 1R, 2, 4 & 5]
101	Table 303.10.1 — Reduction of Clearances With Specified Forms of Protection [NFPA 54: Table 10.2.3]
102	Figures Figure 303.10.1(1) — Extent of Protection Necessary to Reduce Clearances From Gas Appliances or Vent Connectors [NFPA 54: FIGURE 10.3.2.3(a)] Figure 303.10.1(2) — Wall Protector Clearance Reduction System [NFPA 54: Figure 10.3.2.3(b)] Figure 303.10.1(3) — Masonry Clearance Reduction System [NFPA 54: Figure 10.3.2.3(c)]
103	Table 313.3 — Hangers and Supports
104	Chapter 4 — Ventilation Air
106	401.0 — General. 401.1 — Applicability. 401.2 — Filters. [BSC-CG], [DSA-SS & DSA-SS/CC] 401.2.1 — Labeling. 402.0 — Ventilation Air. 402.1 — Occupiable Spaces. 402.1.1 — Construction Documents. 402.1.2 — Ventilation in Health Care Facilities. 402.2 — Natural Ventilation. [Not permitted for OSHPD 1, 2, 3, 4 & 5] 402.2.1 — Floor Area to be Ventilated.
107	402.2.1.1 — Single Side Opening. 402.2.1.2 — Double Side Opening. 402.2.1.3 — Corner Openings. 402.2.1.4 — Ceiling Height. 402.2.2 — Location and Size of Openings. 402.2.3 — Control and Accessibility. 402.3 — Mechanical Ventilation. [Not permitted for OSHPD 1, 2, 3, 4 & 5] 402.4 — Outdoor Air Intake Protection. 402.4.1 — Weather Protections. 403.0 — Ventilation Rates. [Not permitted for OSHPD 1, 2, 3, 4 & 5 spaces listed in Table 4-A] 403.1 — General. 403.2 — Zone Calculations. 403.2.1 — Breathing Zone Outdoor Airflow. 403.2.2 — Zone Air Distribution Effectiveness. 403.2.3 — Zone Outdoor Airflow.
108	403.3 — Single-Zone Systems. 403.4 — One Hundred Percent Outdoor Air Systems. 403.5 — Multiple-Zone Recirculating Systems. 403.5.1 — Uncorrected Outdoor Air Intake. 403.5.1.1 — Occupant Diversity. 403.5.1.2 — System Ventilation Efficiency. 403.5.1.3 — Simplified Procedure for System Ventilation Efficiency. 403.5.1.4 — Zone Minimum Primary Airflow. 403.5.2 — Outdoor Air Intake. 403.6 — Design for Varying Operating Conditions. 403.6.1 — Short-Term Conditions.
109	403.7 — Exhaust Ventilation. 403.7.1 — Parking Garages. 403.7.2 — Enclosed Parking Garages. 403.7.2.1 — Alternative Exhaust Ventilation for Enclosed Parking Garages. 403.7.2.2 — Minimum Exhaust Rate. [HCD 1 &2] 403.7.2.3 — Exhaust Inlet Distribution. [HCD 1& 2] 403.7.2.4 — Exhaust System Operation. [HCD 1& 2] 403.8 — Dynamic Reset. 403.9 — Air Classification and Recirculation. 403.9.1 — Class 1 Air. 403.9.2 — Class 2 Air. 403.9.3 — Class 3 Air. 403.9.4 — Class 4 Air.
110	404.0 — Alternative Procedure for Multiple-Zone Systems Ventilation Efficiency. 404.1 — General. 404.2 — Average Outdoor Air Fraction. 404.3 — Zone Ventilation Efficiency. 404.3.1 — Single Supply Systems. 404.3.2 — Secondary-Recirculation Systems.
111	405.0 — Indoor Air Quality for Residential Occupancies. 405.1 — General. 405.1.1 — Natural Ventilation. 405.2 — Ventilation Air Rate. 405.2.1 Reduced Ventilation Air Rate. 405.3 Bathroom Exhaust. 405.3.1 Exhaust Rate. 405.4 Kitchen Exhaust. 405.4.1 — Exhaust Rate. 405.5 — Ventilation Openings. 406.0 — Evaporative Cooling System for Health Care Facilities. [For OSHPD 1, 1R, 2, 3, 4 & 5] 407.0 — Ventilation System Details. [OSHPD 1, 1R, 2, 3, 4 & 5] 407.1 — General. 407.1.1 — All supply-air, return air, and exhaust-air systems shall be mechanically operated and such systems for areas listed in Table 4-A shall be operated continuously.
112	407.1.2 — Fans serving exhaust systems shall be located at the discharge end of the system. 407.1.3 — Services/Systems and Utilities. 407.2 — Outdoor Air Intakes and Exhaust Outlets. 407.2.1 — Outdoor Air Intakes. Outdoor 407.2.2 — Exhaust Outlets. 407.3 — Air Balance. 407.3.1 — The ventilation systems shall be designed and balanced to provide the general air balance relationship to adjacent areas, shown in Table 4-A. 407.4 — Air Circulation. 407.4.1 — Design of the ventilation system shall provide air movement that is generally from clean to less clean areas. 407.4.1.1 — Air supplied to operating rooms, cesarean operating rooms, cardiac catheterization labs, cystoscopy rooms, delivery rooms, and nurseries shall be delivered at or near the ceiling of the area served. 407.4.1.2 — Room supply air outlets and room recirculation and exhaust air inlets installed in nonsensitive areas shall be located not less than 3 inches (76 mm) above the floor. 407.4.1.3 — Corridors shall not be used to convey supply, return, transfer or exhaust air to or from any room if the corridor is required to be fire resistive construction per the California Building Code. 407.4.1.4 — No space above a ceiling may be utilized as an outside-air, relief-air, supply-air, exhaust-air, or return-air plenum. 407.4.1.5 — Air from a patient room, exam room, treatment room shall not be transferred to another similar room without first having passed through air filters as required by Table 4-B or Table 4-C.
113	407.4.1.6 — Supply outlets and return and exhaust air inlets shall be located to prevent short-circuiting. 407.4.1.7 — Recirculating Room Units. 407.5 — Variable Air Volume. 407.5.1 — Variable Air Volume Systems (VAV). 407.5.1.1 — The VAV system shall comply with code requirements for outside air, total air, and pressure relationship through the full range of operation from minimum to maximum. 407.5.1.2 — The central return or exhaust fan shall be controlled to accomplish the variable air volume requirements of the individual rooms served by the fan as described in Section 407.5.1.3. 407.5.1.3 — Spaces with pressure requirements per Table 4-A shall utilize an automatic modulating damper in the return or exhaust air for each space. 407.6 — Economizers. 408.0 — Filters. [OSHPD 1, 1R, 2, 3, 4 & 5] 408.1 — General. 408.1.1 — A filter gauge shall be installed across each filter bank serving central air systems. 408.1.2 — Central air-handling systems are defined as any unit requiring duct work on the supply or inlet side that serve more than one room. 408.1.3 — Filter banks shall be visually inspected for torn media and bypass in filter frames by means of a flashlight or equivalent, both with fans in operation and stopped. 408.1.4 — Central air-handling systems shall be maintained in a reasonably clean condition during construction and shall be cleaned as necessary prior to replacement of temporary filter used during construction to ensure that cleanair will be delivered to the occupied spaces. 408.1.5 — Filter bank No. 1 shall be located upstream of the air-conditioning equipment. 408.1.6 — Filter bank No. 2 and filter bank No. 3 media shall be rigid or supported (noncollapsing type) and shall operate on the principles of impingement, straining, and diffusion. 408.2 — Filters for Hospitals. 408.2.1 — All air-ventilation systems shall comply with code requirements of this section and shall have filter bank efficiencies as listed in Table 4-B. 408.2.2 — Noncentral recirculating air systems providing cooling to high heat producing equipment located in nonsensitive areas shall have a filter with minimum efficiency reporting value (MERV) of 6 based on ASHRAE 52.2. 408.2.3 — Noncentral air systems serving any areas not listed in Table 4-B shall have a filter with minimum efficiency reporting value (MERV) of 6 based on ASHRAE 52.2. 408.2.4 — Noncentral recirculating air handling systems, for example, through-the-wall units, fan coil units, and heat pumps may be utilized for single patient rooms of one or more beds. 408.3 — Filters for Skilled Nursing Facilities, Intermediate Care Facilities, and Correctional Treatment Centers. 408.3.1 — The air ventilation systems shall comply with code requirements of this section for skilled nursing facilities, intermediate care facilities and correctional treatment centers and shall have filter bank efficiencies as listed in Table 4-C.
114	408.3.2 — Noncentral air systems serving single patient rooms of one or more beds shall comply with Table 4-C. 408.3.3 — Noncentral recirculating air-handling systems, i.e. through the wall units, may be utilized for each patient room with one or more beds. 408.3.4 — Airborne infection isolation rooms, protective environment rooms, and sensitive areas in correctional treatment centers shall comply with Section 408.2. 408.4 — Filters for Outpatient Facilities. 408.4.1 — The air ventilation systems shall comply with code requirements of this section for outpatient facilities and shall have filter bank efficiencies as listed in Table4-B. 408.4.2 — Noncentral air systems serving individual rooms shall comply with Table 4-B. 409.0 — Ducts. [OSHPD 1, 1R, 2, 3, 4 & 5] 409.1 — Ducts which penetrate construction, intended for Xray or other radiation protection, shall not impair the effectiveness of the protection. 409.2 — Duct linings and their use shall meet the requirements of Chapter 6, California Mechanical Code. 409.3 — Insulation of Ducts. 409.4 — The anchorage and supporting structural elements for airducts shall be designed to with stand the lateral forces as required by the California Building Code, Title 24, Part 2. 410.0 — Laboratory Ventilating Systems and Hoods. [OSHPD 1, 1R, 2, 3, 4 & 5] 410.1 — Laboratory Ventilating Systems. 410.2 — Exhaust Hoods and Safety Cabinets. 410.3 — Laboratory Fume Hoods. 410.3.1 — General Standard. 410.3.2 — Special Standards for Use with Strong Oxidants. 410.3.3 — Special Standards for Use with Infectious or Radioactive Materials. 411.0 — Kitchen and Dining Areas. [OSHPD 1, 2, 3, 4 & 5] 411.1 — The air from dining areas may be used to ventilate the food preparation areas only after it has passed through a filter with at least an 80 percent average efficiency based on ASHRAE 52.2 or a minimum efficiency reporting value (MERV) of 13, based on ASHRAE 52.2. 412.0 — Boiler, Mechanical, and Electrical Rooms. [OSHPD 1, 2, 3, 4 & 5] 412.1 — Boiler, heater and electrical equipment rooms shall be provided with outdoor air so as to maintain combustion rates of equipment and temperatures in the rooms and in adjoining areas as rated in this chapter. 412.2 — Floor surfaces in occupied spaces above such rooms should not exceed a temperature of 85°F (29.4°C), and suitable insulation may be required.
115	413.0 — Odorous Rooms. [OSHPD 1, 2, 3, 4 & 5] 413.1 — Rooms in areas where excessive heat or moisture is generated, where objectional odors or dust are present, or where flammable or toxic gases may accumulate, which are used by health facility personnel or patients, shall be provided with exhaust ventilation to change the air a minimum often times per hour. 413.2 — Kitchen, morgues and laundries located inside a hospital building or skilled nursing facility in which patients area ccommodated, or treated, shall be ventilated with exhaust systems which will provide a minimum of ten air changes per hour and prevent odors from entering patient areas. 414.0 — Airborne Infection Isolation Rooms. [OSHPD 1, 2, 3, 4 & 5] 414.1 — Exhaust Systems. 414.1.1 — Exhaust discharge from fan shall extend at least 7 feet (2134 mm) above the roof and discharge vertically upward. Self-draining stacks or equivalent shall be used for rain protection. 414.1.2 — Exhaust shall discharge above roof level and through an accessible HEPA filter. The HEPA filter shall be located upstream of the exhaust fan and have a minimum efficiency of 99.97 percent based on the DOP method in accordance with Mil-Std. 282 or a minimum efficiency reporting value (MERV) of 17, based on ASHRAE 52.2. 414.2 — Air Distribution. 415.0 — Protective Environment Rooms. [OSHPD 1, 2, 3, 4 & 5] 415.1 — Air Distribution. 416.0 — Alarms – Airborne Infection Isolation Rooms and Protective Environment Rooms. [OSHPD 1, 2, 3, 4 & 5] 416.1 — An alarm system which is based on static pressure control, volumetric control, or directional flow measurement shall be provided for each isolation room. 416.2 — Other acceptable alarm systems will be allowed when designs are specifically approved by the enforcing agency. 416.3 — [For OSHPD 4] For correctional treatment centers, the alarm system shall not create false alarms or security hazards. 416.4 — Prior to acceptance of the rooms, the alarm system shall be tested and operated to demonstrate to the owner or designated representative that the installation and performance of the system conforms to design intent.
116	417.0 — Testing and Balancing Airborne Infection Isolation Rooms and Protective Environment Rooms. [OSHPD 1, 2, 3, 4 & 5] 418.0 — Design Requirements for Ethylene Oxide (ETO) Sterilization Areas. [OSHPD 1, 1R, 2, 3, 4 & 5] 418.1 — Air Changes. 418.2 — Exhaust Requirements. 418.2.1 — All air from the ETO sterilizer equipment room shall be exhausted to the outside by a dedicated system or other approved method. 418.2.2 — The exhaust fan for the dedicated system shall be located at the discharge point of the system and identified as ETO Equipment Room Exhaust. 418.2.3 — Discharge Point. 418.3 — Ventilation Requirements. 418.3.1 — Aeration Units. 418.3.2 — Capture Box. 418.3.3 — Cylinder Change. 418.3.4 — Sterilizer Relief Valve. 418.3.5 — Ventilation of Sterilizer Door Area. 418.4 — Gas Valves. 418.5 — Alarm Systems. 419.0 — Neonatal Intensive Care Units. [OSHPD 1] 419.1 — Formula Preparation Area. 419.2 — Treatment Area/Room. 420.0 — Air Distribution Devices. [OSHPD 1, 2, 3, 4 & 5]
117	Tables Table 4-A — Pressure Relationship and Ventilation Requirements For General Acute Care Hospitals, Skilled Nursing Facilities, Intermediate Care Facilities, Correctional Treatment Centers, Outpatient Facilities, and Licensed Clinics
122	Table 4-B — Filter Efficiencies for Central Ventilation and Air-Conditioning Systems in General Acute Care Hospitals, Acute Psychiatric Hospitals, Outpatient Facilities, and Licensed Clinics Table 4-C — Filter Efficiencies for Central Ventilation and Air-Conditioning Systems in Skilled Nursing Facilities and Intermediate Care Facilities and Correctional Treatment Centers
123	Table 402.1 — Minimum Ventilation Rates in Breathing Zone [ASHRAE 62.1: Table 6.2.2.1]
125	Table 403.2.2 — Zone Air Distribution Effectiveness [ASHRAE 62.1: Table 6.2.2.2]
126	Table 403.7 — Minimum Exhaust Rates [ASHRAE 62.1: Table 6.5]
128	Chapter 5 — Exhaust Systems
130	501.0 — General. 501.1 — Applicability 502.0 — Termination. 502.1 — Exhaust Opening Protection. 502.2 — Termination of Exhaust Ducts. 502.2.1 — Environmental Air Ducts. 502.2.2 — Product Conveying Ducts. 502.2.3 — Commercial Kitchen Ducts. Part I – Environmental Air Ducts and Product-Conveying Systems. 503.0 — Motors, Fans, and Filters. 503.1 — General. 503.2 — Fans. 504.0 — Environmental Air Ducts. 504.1 — General. 504.1.1 — Backdraft Protection.
131	504.2 — Independent Exhaust Systems. 504.3 — Domestic Range. 504.4 — Clothes Dryers. 504.4.1 — Provisions for Makeup Air. 504.4.2 — Domestic Clothes Dryers. 504.4.2.1 — Length Limitation. 504.4.2.2 — Transition Ducts. 504.4.2.3 — Exhaust Duct Power Ventilators. 504.4.3 — Commercial Clothes Dryers. 504.4.3.1 — Exhaust Ducts for Type 2 Clothes Dryers.
132	504.4.4 — Common Exhaust. 504.4.5 — Duct Supports. 504.5 — Heat (Energy) Recovery Ventilators. 504.6 — Gypsum Wallboard Ducts. 505.0 — Product-Conveying Systems. 505.1 — General. 505.1.1 — Mechanical Ventilation. 505.2 — Incompatible Materials. 505.3 — Flammability Limit. 505.3.1 — Higher Concentrations. 505.3.2 — Ovens and Furnaces. 505.3.3 — Deflagration. 505.4 — Air-Moving Devices. 505.5 — Generating Flames, Sparks, or Hot Materials. 505.6 — Fire Dampers.
133	505.6.1 — Prohibited. 505.7 — Fire Detection and Alarm Systems. 505.7.1 — Automatic Extinguishing System. 505.7.2 — Shut Down Permitted. 505.8 — Product-Conveying Ducts Classification. 505.9 — Minimum Velocities and Circulation. 505.10 — Makeup Air. 505.11 — Hoods and Enclosures. Tables Table 505.9 — Range of Minimum Duct Design Velocities
134	505.12 — Pharmacies – Compounding Area of Parenteral Solutions. [CA – Board of Pharmacy] 505.12.1 — Pharmacies – Laminar Flow Biological Safety Cabinet. [CA – Board of Pharmacy] 506.0 — Product-Conveying Ducts. 506.1 — Materials. 506.2 — Construction. 506.3 — Penetrations. 506.3.1 — Fire Barriers.
135	Table 506.2(1) — Minimum Sheet Metal Thickness for Round Ducts
136	506.3.2 — Protection. 506.4 — Condensate. 506.4.1 — Drainage. 506.5 — Fittings. 506.6 — Explosion Venting.
137	506.7 — Supports. 506.8 — Fire Protection. 506.8.1 — Loads. 506.8.2 — Corrosion. Table 506.2(2) — Minimum Sheet Metal Thickness for Rectangular Ducts
138	506.8.3 — Vibration and Stress. 506.8.4 — Expansion and Contraction. 506.9 — Protection from Physical Damage. 506.10 — Duct Clearances. 506.10.1 — Protection Provided. 506.10.2 — Systems Conveying Combustible Materials. 506.10.3 — Reduced Clearance Permitted. 506.10.4 — Clearance Increases. 506.10.4.1 — Temperatures Over 900°F. 506.10.4.2 — Clearance Reduction. 506.11 — Clearance Reduction Methods. 506.11.1 — Spacers and Ties. 506.11.2 — Wool Batts Insulation. 506.11.3 — Insulation Board. 506.11.4 — Duct and Thermal Shield. 506.11.5 — Thermal Shield and Combustible Surface. 506.11.6 — Reduced Clearance with Air Gaps. 506.11.6.1 — Air Circulation. 506.11.6.2 — Single Flat Wall. Table 506.10.4 — Basic Minimum Clearances to Unprotected Surfaces [NFPA 91: Table 4.7.3]
139	506.11.6.3 — Thermal Shielding. Part II – Commercial Hoods and Kitchen Ventilation. 507.0 — General Requirements. 507.1 — Type I Hood Exhaust System. 507.2 — Exhaust System. 507.2.1 — Airflow. 507.2.2 — Responsibility. 507.2.3 — Solid-fuel Cooking Equipment. 507.2.4 — Multitenant Applications. Table 506.11 — Reduction of Duct Clearance with Specified Forms of Protection [NFPA 91: Table 4.7.4]
140	507.2.5 — Interior Surfaces. 507.2.6 — Used in Other Applications. 507.3 — Listed Devices. 507.3.1 — Penetration. 507.4 — Clearance. 507.4.1 — Listed. 507.4.2 — Clearance Reduction. 507.4.2.1 — Mineral Wool Batts or Ceramic Fiber Blanket. 507.4.2.2 — Field-Applied Grease Duct Enclosure. 507.4.2.3 — Zero Clearance. 507.4.3 — Clearance Integrity. 507.4.3.1 — Fire. 507.4.3.2 — Required Protection. 507.4.3.3 — Protection Methods. 507.4.4 — Factory Built. 507.4.4.1 — Listing. 507.4.4.2 — Single Wall. 507.4.4.3 — Installation. 507.4.5 — Field Applied.
141	507.4.6 — Both Field-Applied and Factory Built. 507.4.6.1 — Physical Damage. 507.4.6.2 — Specification. 507.4.6.3 — Clearance Options. 507.4.7 — Building and Structural Contact. 507.4.7.1 — Corrosion Protection. 507.4.7.2 — Zero Clearance. 507.4.8 — Clearance Between Duct and Interior Surfaces. 507.5 — Drawings. 507.6 — Notification of Change. 507.7 — Pharmaceutical Compounding Exhaust Discharge. [OSHPD 1, 2, 3, 4 & 5] 508.0 — Type I Hoods. 508.1 — Where Required. 508.2 — Listed Type I Hood Assemblies. 508.2.1 — Listed Ultraviolet Hoods.
142	508.2.2 — Listed Ventilated Ceiling Technology. 508.2.3 — Construction of Listed Exhaust Hoods. 508.2.4 — Assembly of Listed Exhaust Hoods. 508.3 — Construction of Type I Hoods. 508.3.1 — Grease Vapor. 508.3.2 — Seams, Joints, and Penetrations. 508.3.2.1 — Sealed. 508.3.3 — Eyebrow-Type Hoods. 508.3.3.1 — Duct Connection. 508.3.4 — Insulation. 508.3.5 — Exhaust Hood Assemblies with Integrated Supply-Air Plenums. 508.3.5.1 — Outer Shell. 508.3.5.2 — Inner Shell. 508.3.5.3 — Fire Dampers. Figures Figure 508.3.3 — Typical Section of Eyebrow-Type Hood [NFPA 96: Figure 5.1.8.1]
143	508.3.5.3.1 — Listing. 508.3.5.3.2 — Actuating Temperature. 508.3.5.3.3 — Exemption. 508.4 — Supports. 508.5 — Hood Size. 508.5.1 — Canopy Size and Location. 508.5.1.1 — Capacity of Hoods. 508.5.1.2 — Extra-Heavy-Duty Cooking Appliances. 508.5.1.3 — Heavy-Duty Cooking Appliances. 508.5.1.4 — Medium-Duty Cooking Appliances. Table 508.5.1.2 — Extra-Heavy-Duty Cooking Appliance Airflow Table 508.5.1.3 — Heavy-Duty Cooking Appliance Airflow Table 508.5.1.4 — Medium-Duty Cooking Appliance Airflow
144	508.5.1.5 — Light-Duty Cooking Appliances. 508.5.2 — Noncanopy-Type Hoods. 508.5.2.1 — Installation. 508.5.2.2 — Capacity. 508.5.3 — Labeling. 508.6 — Solid-Fuel Hood Assemblies. 508.7 — Exhaust Outlets. 509.0 — Grease Removal Devices in Hoods. 509.1 — Grease Removal Devices. 509.1.1 — Grease Filters, Mesh-Type. 509.2 — Installation. 509.2.1 — Vertical Distance. 509.2.2 — Grease Removal Device Protection. 509.2.2.1 — Installation. 509.2.2.2 — Size and Location. 509.2.2.3 — Clearance. Table 508.5.1.5 — Light-Duty Cooking Appliance Airflow
145	509.2.3 — Grease Filters. 509.2.3.1 — Arrangement. 509.2.3.2 — Accessibility. 509.2.3.3 — Angled Installation. 509.2.3.4 [DPH] — Grease filters shall be Class I when tested in accordance with the test method in SFM 12-71-1. 509.2.4 — Grease Drip Trays. 509.2.4.1 — Size and Pitch. 509.2.5 — Grease Filter Orientation. 509.3 — Solid-Fuel Grease Removal Devices. 510.0 — Exhaust Duct Systems. 510.1 — General. 510.1.1 — Fire Hazards. 510.1.2 — Interconnection. 510.1.3 — Duct Installation. 510.1.4 — Accessibility. 510.1.5 — Sign. 510.1.6 — Bracing and Supports. 510.1.7 — Type I Exhaust Duct Systems. 510.2 — Clearance. 510.3 — Openings. 510.3.1 — Access Panel. 510.3.2 — Access for Cleaning and Inspection.
146	510.3.3 — Horizontal Ducts. 510.3.3.1 — Cleaning. 510.3.3.2 — Safe Access and Work Platform. 510.3.3.3 — Support. 510.3.4 — Vertical Ducts. 510.3.4.1 — Access. 510.3.4.2 — Safe Access and Work Platform. 510.3.5 — Nonlisted Ductwork. 510.3.6 — Access Panels. 510.3.6.1 — Listed Grease Ducts. 510.3.6.2 — Within an Enclosure. 510.3.7 — Fire Protection System Devices. 510.4 — Listed Grease Ducts. 510.4.1 — Factory-Built Grease Ducts. 510.5 — Other Grease Ducts. 510.5.1 — Materials. 510.5.2 — Factory-Built Grease Ducts. 510.5.3 — Installation. 510.5.3.1 — Duct Leakage Test. 510.5.3.2 — Welded Duct Connection.
147	Figure 510.5.3 — Permitted Duct-To Hood Collar Connection [NFPA 96: Figure 7.5.2.2] Figure 510.5.3.2(1) — Telescoping -Type Duct Connection [NFPA 96: Figure 7.5.5.1(a)] Figure 510.5.3.2(2) — Bell-Type Duct Connection [NFPA 96: Figure 7.5.5.1(B)] Figure 510.5.3.2(3) — Flange with Edge Weld Duct Connection [NFPA 96: Figure 7.5.5.1(C)] Figure 510.5.3.2(4) — Flange with Filled Weld Duct Connection [NFPA 96: Figure 7.5.5.1(D)]
148	510.5.4 — Butt Welded Connections. 510.5.5 — Telescoping and Bell-Type Connections. 510.5.6 — Duct Leakage Test. 510.6 — Exterior Installations. 510.6.1 — Weather Protection. 510.7 — Interior Installations. 510.7.1 — Less than Four Stories. 510.7.2 — Four Stories or More. 510.7.3 — Clearance. 510.7.4 — Mechanical and Structural Integrity. 510.7.5 — Materials. 510.7.5.1 — Protection from Physical Damage. 510.7.5.2 — Inspection.
149	510.7.6 — Listed. 510.7.7 — Fire Doors. 510.7.8 — Ducts with Enclosure(s). 510.8 — Underground Installations. 510.8.1 — Grease Receptacle. 510.8.2 — Cleanouts. 510.9 — Termination of Type I Hood Exhaust System. 510.9.1 — Rooftop Terminations. Figure 510.9.1 — Upblast Fan Clearances [NFPA 96: Figure 7.8.2.1]
150	510.9.1.1 — Listed Vibration Isolation Connectors. 510.9.1.2 — Inspection and Cleaning. 510.9.2 — Wall Terminations. 510.10 — Solid-Fuel Duct Systems. 511.0 — Air Movement. 511.1 — Exhaust Fans for Commercial Cooking Operations. 511.1.1 — Upblast Fans. 511.1.2 — In-Line Exhaust Fans. 511.1.2.1 — Accessibility. Figure 510.9.2 — Exhaust Termination Distance from Fresh Air Intake (Fai) or Operable Door or Window [NFPA 96: Figure 7.8.3]
151	511.1.3 — Utility Set Exhaust Fans. 511.1.3.1 — At the Rooftop. 511.1.3.2 — Within the Building. Figure 511.1.2(1) — Typical Section of Duct-To-Fan Connection-Butt Joint Method [NFPA 96: Figure 8.1.3.2(a)] Figure 511.1.2(2) — Typical Section of Duct-To-Fan Connection-Overlapping Method [NFPA 96: Figure 8.1.3.2(b)] Figure 511.1.2(3) — Typical Section of Duct-To-Fan Connection–Sealant Method [NFPA 96: Figure 8.1.3.2(c)] Figure 511.1.2(4) — Typical Section of Duct-To-Fan Connection-Direct To Fan Inlet Cone Method [NFPA 96: Figure 8.1.3.2(d)]
152	511.1.3.3 — Duct Systems. 511.1.4 — Construction. 511.1.5 — Openings. 511.1.6 — Standard. 511.2 — Airflow. 511.2.1 — Exceptions. 511.2.2 — Exhaust-Air Volumes. 511.2.2.1 — Performance Test. 511.2.2.2 — Capture and Containment Test. 511.2.3 — Exhaust Fan Operation. 511.3 — Makeup Air. 511.3.1 — Air Balance. 511.4 — Common Duct (Manifold) Systems.
153	511.4.1 — Connections. 511.4.2 — Fire Damper. 511.4.3 — Construction and Clearance. 511.4.4 — Adjustment. 511.4.5 — Adjustment Location. 511.4.6 — Bleed Air Duct. 511.4.7 — Disconnect. 511.5 — Solid-Fuel Air Movement Requirements. 512.0 — Auxiliary Equipment. 512.1 — Dampers. 512.1.1 — Use. 512.2 — Electrical Equipment. 512.2.1 — Device Installation in Ducts. 512.2.2 — Lighting Units. 512.2.3 — Concealed Spaces. 512.2.4 — Listed Lighting Units. 512.2.5 — Standard. 512.3 — Other Equipment. 512.3.1 — Access Required. 512.3.2 — Downgrading. 512.3.3 — Fire-Extinguishing System. 512.3.3.1 — Protection. 512.3.3.2 — Filter Media. 512.3.4 — Source of Ignition. 512.3.5 — Air Recirculation. 512.3.6 — Carbon Monoxide Detector Required. 512.4 — Solid-Fuel Auxiliary Equipment.
154	513.0 — Fire-Extinguishing Equipment. 513.1 — General. 513.1.1 — Devices in Exhaust Ducts. 513.1.2 — Protection. 513.2 — Types of Equipment. 513.2.1 — Identification. 513.2.2 — Standard. 513.2.3 — Installation. 513.2.4 — Modification of Existing Hood Systems. 513.2.4.1 — Sealing. 513.2.4.2 — Obstructions. 513.2.4.3 — System Re-evaluation. 513.2.5 — Baffle Hoods with Water Wash. 513.2.5.1 — Listed for the Purpose. 513.2.5.2 — Domestic Water Supply. 513.2.5.3 — Control Valve. 513.2.5.4 — Activation.
155	513.2.5.5 — Water-Wash System. 513.2.5.6 — Exception. 513.2.5.7 — Water Supply. 513.2.6 — Water Valve Supervision. 513.3 — Simultaneous Operation. 513.3.1 — Hoods. 513.3.1.1 — Common Ductwork. 513.3.2 — Independent Systems. 513.3.3 — Exempt Equipment. 513.3.4 — Automatic Sprinkler System. 513.3.5 — Dry or Wet Chemical Systems. 513.4 — Fuel and Electric Power Shutoff. 513.4.1 — Steam. 513.4.2 — Protection Not Required. 513.4.3 — Manual Reset. 513.5 — Manual Activation.
156	513.6 — System Annunciation. 513.6.1 — Signaling. 513.7 — Special Design and Application. 513.8 — Review and Certification. 513.9 — Installation Requirements. 513.10 — Portable Fire Extinguishers. 513.10.1 — Other Fire Extinguishers. 513.10.2 — Carbon Dioxide-Type. 513.11 — Maintenance. 513.11.1 — Permitted Use. 513.12 — Solid-Fuel Fire-Extinguishing Equipment. 514.0 — Procedures for the Use, Inspection, Testing, and Maintenance of Equipment. 514.1 — Operating Procedures. 514.1.1 — Filters. 514.1.2 — Openings. 514.1.3 — Posting of Instructions. 514.1.4 — Listing and Manufacturer’s Instructions. 514.1.5 — Nonoperational. 514.1.6 — Secondary Control Equipment. 514.1.7 — Inspection Frequency. 514.2 — Inspection, Testing, and Maintenance. 514.2.1 — Requirements. 514.2.2 — Fusible Links and Sprinklers. 514.2.3 — Inspection Tag.
157	514.2.4 — Temperature-Sensing Elements. 514.2.5 — Certification. 514.3 — Inspection for Grease Buildup. 514.4 — Cleaning of Exhaust Systems. 514.4.1 — Measurement System. 514.4.1.1 — Combustible Contaminants. 514.4.1.2 — Gauge Comb. 514.4.1.3 — Cleaning Method. 514.4.1.4 — Combustible Contaminants. 514.4.2 — Removal of Contaminants. 514.4.3 — Electrical Switches. 514.4.4 — Fire Suppression System. 514.4.5 — Inoperable. 514.4.6 — Solvents/Cleaning Aids. 514.4.7 — Cleaning Chemicals. 514.4.8 — Coating. 514.4.9 — Access Panels and Cover Plates. 514.4.10 — Date of Inspection. Table 514.3 — Schedule of Inspection for Grease Buildup [NFPA 96: Table 11.4] Figure 514.4.1.2 — Depth Gauge Comb [NFPA 96: Figure 11.6.1.1.2]
158	514.4.11 — Airflow. 514.4.12 — Operable State. 514.4.13 — Certification of Service. 514.4.14 — Report Provided. 514.4.15 — Unclean Area. 514.4.16 — Metal Containers. 514.5 — Cooking Equipment Maintenance. 514.5.1 — Cleaning. 515.0 — Minimum Safety Requirements for Cooking Equipment. 515.1 — Cooking Equipment. 515.1.1.1 — Re-evaluation. 515.1.1.2 — Prior Location. 515.1.1.3 — Minimum Space. 515.1.1.4 — Space Not Required. 515.1.1.5 — Minimum Height. 515.2 — Operating Controls. 516.0 — Recirculating Systems. 516.1 — General Requirements. 516.2 — Design Restrictions. 516.2.1 — Gas/Electrically Fueled Cooking Appliances.
159	516.2.2 — Recirculation. 516.2.3 — Protection. 516.2.4 — Maximum Limits. 516.2.5 — Label. 516.2.6 — Fire Damper. 516.2.7 — Installation of Electrical Wiring. 516.2.8 — Power Supply. 516.2.9 — Listing Evaluation. 516.3 — Interlocks. 516.3.1 — Airflow Sections. 516.3.2 — Filter Component. 516.3.3 — ESP Interlocks. 516.3.3.1 — Manual Reset. 516.3.4 — Airflow Switch or Transducer. 516.4 — Location and Application Restrictions. 516.5 — Additional Fire Safety Requirements. 516.5.1 — Installation Downstream. 516.5.2 — Locations. 516.6 — Use and Maintenance. 516.6.1 — Manufacturer’s Instructions. 516.6.2 — Cleaning Schedule.
160	516.6.3 — Hood Plenum and Blower Section Cleaning Schedule. 516.6.4 — Inspection of Safety Interlocks. 516.6.5 — Inspection. 516.6.6 — Maintenance Log. 517.0 — Solid-Fuel Cooking Operations. 517.1 — Venting Application. 517.1.1 — Natural Draft. 517.1.2 — System Compliance. 517.1.3 — Makeup Air System. 517.1.4 — Natural Draft Ventilation Systems. 517.1.5 — Opening Requirements. 517.1.6 — Spark Arresters. 517.2 — Location of Appliances. 517.2.1 — Prohibited Location. 517.2.2 — Flammable Vapors. 517.3 — Hoods for Solid-Fuel Cooking. 517.3.1 — Separation. 517.3.1.1 — Equipment with Solid Fuel for Flavoring.
161	517.4 — Exhaust Systems for Solid-Fuel Cooking. 517.4.1 — Hood. 517.4.2 — Building Exceeding Four Stories. 517.4.3 — Prohibited. 517.5 — Grease Removal Devices for Solid-Fuel Cooking. 517.5.1 — Spark Arrester Devices. 517.5.2 — Filters. 517.6 — Air Movement for Solid-Fuel Cooking. 517.6.1 — Replacement Air. 517.6.2 — Operation. 517.7 — Fire-Extinguishing Equipment for Solid-FuelCooking. 517.7.1 — Grease Removal Devices, Hoods, and Duct Systems. 517.7.2 — Listed Fire-Extinguishing Equipment. 517.7.3 — Rating and Design. 517.7.4 — Listing/Class. 517.7.5 — Fixed-Water Pipe System. 517.7.6 — Fuel Storage.
162	517.7.7 — Auxiliary Fuel. 517.8 — Other Safety Requirements. 517.8.1 — Site-Built Solid Fuel Cooling Appliances. 517.8.2 — Additional Devices. 517.8.3 — Prohibited. 518.0 — Downdraft Appliances. 518.1 — General. 518.2 — Ventilation System. 518.3 — Fire-Extinguishing Equipment. 518.3.1 — Integral Fire-Extinguishing System. 518.3.2 — Interlocks. 518.4 — Airflow Switch or Transducer. 518.4.1 — Interlocks.
163	518.4.2 — Manual Reset. 518.5 — Surface Materials. 519.0 — Type II Hood Exhaust System Requirements. 519.1 — Where Required. 519.2 — Construction of Type II Hoods. 519.3 — Dishwashing Appliances. 519.4 — Type II Exhaust Duct Systems. 519.5 — Termination of Type II Hood Exhaust System. 519.6 — Makeup Air.
164	Chapter 6 — Duct Systems
166	601.0 — General. 601.1 — Applicability. 601.2 — Sizing Requirements. 601.2.1 — California Energy Code Residential Return Duct Sizing Requirements. 602.0 — Material. 602.1 — General. 602.2 — Combustibles Within Ducts or Plenums. 602.2.1 — Electrical. 602.2.2 — Fire Sprinkler Piping. 602.2.3 — Pneumatic Tubing. 602.2.4 — Discrete Products in Plenums. 602.3 — Metallic. 602.4 — Nonmetallic Ducts. 602.4.1 — Phenolic. 602.4.2 — Gypsum.
167	602.4.3 — Air Dispersion Systems. 602.4.4 — Other Materials. 602.5 — Vibration Isolators. 602.6 — Corridors. 603.0 — Installation of Ducts. 603.1 — General. 603.1.1 — Pressure Classification. 603.1.2 — Air Temperature. 603.1.3 — Protection. 603.1.4 — Vertical Risers. 603.1.5 — Penetrations. 603.2 — Under Floor or Crawl Space. 603.3 — Metal Ducts. 603.3.1 — Earthquake Loads. 603.4 — Flexible Air Ducts. 603.4.1 — Length Limitation. [Not permitted for OSHPD 1, 1R, 2, 3, 4 & 5]
168	603.4.1.1 — Flexible Ducts. [OSHPD 1, 1R, 2, 3, 4 & 5] 603.4.2 — Flexible Air Connectors. 603.5 — Plastic Ducts. 603.6 — Protection of Ducts. 603.7 — Support of Ducts. 603.7.1 — Metal Ducts. 603.7.1.1 — Rectangular Ducts. 603.7.1.2 — Horizontal Round Ducts. 603.7.1.3 — Tight-Fitting Around the Perimeter. 603.7.1.4 — Size of Circular Bands. 603.7.1.5 — Connection. 603.7.2 — Flexible Air Ducts. 603.7.3 — Other Ducts. 603.8 — Protection Against Flood Damage. 603.9 — Joints and Seams of Ducts. 603.9.1 — Closure Systems. 603.9.2 — Duct Leakage Tests. [Not adopted by HCD] Tables Table 603.9.1 — Closure Markings
169	603.9.2.1 — Duct Leakage Tests for Buildings that Meet Air Distribution System Duct Leakage Sealing Criteria in Title 24, Part 6. 603.10 — Cross Contamination. 603.11 — Underground Installation. 603.12 — Air Dispersion Systems. 603.13 — Clearances. 603.13.1 — General. 603.13.2 — Supply Air Ducts to Listed Furnaces. 603.13.3 — Supply Air Ducts to Unlisted Furnaces. 603.13.4 — Furnace Plenums and Air Ducts. 603.13.5 — Duct Furnaces. 603.13.6 — Fuel-Burning Kilns. 604.0 — Furnace Plenums and Ducts Used in Fuel-Gas Appliances. 604.1 — Furnace Plenums and Air Ducts. 604.2 — Supplied as a Part of Furnace. 604.3 — Not Supplied with the Furnace.
170	604.4 — Return Air. 605.0 — Insulation of Ducts. 605.1 — General. 605.1.1 — Within Ducts or Plenums. 605.1.2 Duct Coverings and Linings. 605.2 [OSHPD 1, 1R, 2, 3 (surgical clinics), 4 & 5] — Thermal acoustical lining materials shall not be installed within ducts, terminal boxes, sound traps, and other in-duct systems serving areas such as operating, cesarean operating rooms, delivery rooms, post anesthesia care units, cystoscopy, cardiac catheterization labs, nurseries, intensive care units, newborn intensive care units, and airborne infection isolation rooms unless filters with 90 percent average efficiency based on ASHRAE Standard 52.2 or minimum efficiency rating value (MERV) of 14 are installed downstream of the duct lining. 605.3 [OSHPD 1, 1R, 2, 4 & 5] — Thermal or acoustical lining materials shall not be installed within ducts which are downstream of the 99.97 percent high-efficiency particulate air (HEPA) filter or with minimum efficiency rating value (MERV) of 17 required in Section 408.2.1 for protective environment rooms. 606.0 — Smoke Dampers, Fire Dampers, and Ceiling Dampers. 606.1 — Smoke Dampers. 606.2 — Fire Dampers. 606.3 — Ceiling Radiation Dampers. 606.4 — Multiple Arrangements. 606.5 — Access and Identification.
171	606.6 — Freedom from Interference. 606.7 — Temperature Classification of Operating Elements. 606.8 — When the automatic activation of a smoke damper or a combination smoke-fire damper occurs, the HVAC system serving such dampers shall immediately shut down. 607.0 — Ventilating Ceilings. 607.1 — General. 607.1.1 [OSHPD 1, 1R, 2, 3, 4 & 5] — Ventilating ceilings are not permitted in health facilities. 607.2 — Requirements. 608.0 — Use of Under-Floor Space as Supply Plenum for Dwelling Units. 608.1 — General. 608.2 — Dwelling Units. 608.3 — Enclosed. 608.4 — Flammable Materials. 608.5 — Access. 608.6 — Automatic Control. 608.7 — Temperature Limit. 608.8 — Noncombustible Receptacle. 608.8.1 — Location. 608.8.2 — Area. 608.8.3 — Perimeter. 608.9 — Floor Registers. 608.10 — Exterior Wall and Interior Stud Partitions.
172	608.11 — Wall Register. 608.12 — Distance from Combustible. 608.13 — Vapor Barrier. 608.14 — Prohibited. 609.0 Automatic Shutoffs. 609.1 — Air-Moving Systems and Smoke Detectors.
174	Chapter 7 — Combustion Air
176	701.0 — General. 701.1 — Applicability. 701.1.1 — Other Types of Appliances. 701.2 — Pressure Difference. 701.3 — Makeup Air. 701.4 — Indoor Combustion Air. 701.4.1 — Standard Method. 701.4.2 — Known Air Infiltration Rate Method. 701.5 — Indoor Opening Size and Location. 701.6 — Outdoor Combustion Air.
177	701.6.1 — Two Permanent Openings Method. 701.6.2 — One Permanent Opening Method. 701.7 — Combination Indoor and Outdoor Combustion Air. Figures Figure 701.5 — All Combustion Air from Adjacent Indoor Spaces Through Indoor Combustion Air Openings [NFPA 54: Figure A.9.3.2.3(1)] Figure 701.6.1(1) — All Combustion Air from Outdoors – Inlet Air From Ventilated Crawl Space and Outlet Air to Ventilated Attic [NFPA 54: Figure A.9.3.3.1(1)(a)] Figure 701.6.1(2) — All Combustion Air From Outdoors through Ventilated Attic [NFPA 54: Figure A.9.3.3.1(1)
178	701.7.1 — Indoor Openings. 701.7.2 — Outdoor Opening(s) Location. 701.7.3 — Outdoor Opening(s) Size. 701.8 — Engineered Installations. 701.9 — Mechanical Combustion Air Supply. 701.9.1 — Exhaust Fans. 701.9.2 — Interlock. 701.9.3 — Specified Combustion Air. 701.10 — Louvers, Grilles, and Screens. 701.10.1 — Minimum Screen Mesh Size. 701.10.2 — Motorized Louvers. Figure 701.6.1(3) — All Combustion Air from Outdoors Through Horizontal Ducts [NFPA 54: Figure A.9.3.3.1(2)] Figure 701.6.2 — All Combustion Air from Outdoors Through Single Combustion Air Opening [NFPA 54: Figure A.9.3.3.2]
179	701.11 — Combustion Air Ducts. 701.12 — Dampers Prohibited. 702.0 — Extra Device or Attachment. 702.1 — General.
180	Chapter 8 — Chimneys and Vents
182	801.0 — General. 801.1 — Applicability. 801.2 — Venting of Gas Appliances. 801.3 — Appliances Fueled by Other Fuels. 802.0 — Venting of Appliances. 802.1 — Listing. 802.1.1 — Installation. 802.1.2 — Prohibited Discharge. 802.2 — Connection to Venting Systems. 802.2.1 — Appliances Not Required to be Vented. 802.2.2 — Maximum Input Rating. 802.2.3 — Adjacent Room or Space. 802.2.4 — Ventilating Hoods. 802.2.5 — Well-Ventilated Spaces. 802.2.6 — Direct Vent Appliances. 802.2.7 — Appliances with Integral Vents. 802.2.8 — Incinerators, Commercial–Industrial. 802.3 — Minimum Safe Performance. 802.3.1 — Appliance Draft Requirements. 802.3.2 — Appliance Venting Requirements.
183	802.3.3 — Mechanical Draft Systems. 802.3.3.1 — Venting. 802.3.3.2 — Leakage. 802.3.3.3 — Vent Connectors. 802.3.3.4 — Operation. 802.3.3.5 — Exit Terminals. 802.3.4 — Ventilating Hoods and Exhaust Systems. 802.3.5 — Circulating Air Ducts, Above-Ceiling Air-Handling Spaces, and Furnace Plenums. 802.3.6 — Above-Ceiling or Nonducted Air Handling System. 802.4 — Type of Venting System to be Used. 802.4.1 — Plastic Piping. 802.4.2 — Plastic Vent Joints. 802.4.3 — Special Gas Vents. 802.5 — Masonry, Metal, and Factory-Built Chimneys. 802.5.1 — Factory-Built Chimneys. 802.5.1.1 — Decorative Shrouds. 802.5.2 — Metal Chimneys. 802.5.3 — Masonry Chimneys.
184	802.5.4 — Termination. 802.5.4.1 — Medium-Heat Gas Appliances. 802.5.4.2 — Chimney Height. 802.5.4.3 — Decorative Shrouds. 802.5.5 — Size of Chimneys. Tables Table 802.4 — Type of Venting System To Be Used [NFPA 54: Table 12.5.1]
185	802.5.6 — Inspection of Chimneys or Vents. 802.5.7 — Inspection of Chimneys. 802.5.7.1 — Standard. 802.5.7.2 — Cleanouts. 802.5.7.3 — Existing Chimney. 802.5.8 — Chimney Serving Appliances Burning Other Fuels. 802.5.8.1 — Gas and Liquid Fuel-Burning Appliances. Figures Figure 802.5.4 — Typical Termination Locations for Chimneys and Single-Wall Metal Pipes Serving Residential-Type and Low-Heat Appliance [NFPA 54: Figure A.12.6.2.1]
186	802.5.8.2 — Gas and Solid Fuel-Burning Appliances. 802.5.8.3 — Combination Gas- and Oil-Burning Appliances. 802.5.9 — Support of Chimneys. 802.5.10 — Cleanouts. 802.5.11 — Space Surrounding Lining or Vent. 802.5.11.1 — Combustion Air. 802.6 — Gas Vents. 802.6.1 — Gas Vent Termination.
187	802.6.1.1 — Insulation Shield. 802.6.2 — Size of Gas Vents. 802.6.2.1 — Category I Appliances. 802.6.2.2 — Vent Offsets. 802.6.2.3 — Category II, Category III, and Category IV Appliances. 802.6.2.4 — Sizing. 802.6.3 — Gas Vents Serving Appliances on More than One Floor. Table 802.6.1 — Roof Pitch Height Figure 802.6.1 — Termination Locations for Gas Vents with Listed Caps 12 Inches or Less in Size Not Less Than 8 Feet from A Vertical Wall [NFPA 54: Figure 12.7.3]
188	802.6.3.1 — Occupiable Space. 802.6.3.2 — Multistory Venting System. 802.6.4 — Support of Gas Vents. 802.6.5 — Marking. 802.7 — Single-Wall Metal Pipe. 802.7.1 — Cold Climate. 802.7.2 — Termination. 802.7.3 — Installation with Appliances Permitted by Section 802.4. 802.7.3.1 — Limitations. Figure 802.6.3.1 — Plan View of Practical Separation Method for Multistory Gas Venting [NFPA 54: Figure A.12.7.5.2] Figure 802.6.3.2 — Use of Manifolded Common Vent Connector [NFPA 54: Figure F.1(k)]
189	802.7.3.2 — Attic or Concealed Space. 802.7.3.3 — Clearances. 802.7.3.4 — Combustible Exterior Wall. 802.7.3.5 — Roof Thimble. 802.7.4 — Size of Single-Wall Metal Pipe. Table 802.7.3.3 — Clearance for Connectors [NFPA 54: Table 12.8.4.4]
190	802.7.5 — Support of Single-Wall Metal Pipe. 802.7.6 — Marking. 802.8 — Through-the-Wall Vent Termination. 802.8.1 — Mechanical Draft Venting System. 802.8.2 — Direct Vent Appliance. 802.8.3 — Category I through Category IV and Noncategorized Appliances. 802.8.4 — Annular Spaces. 802.8.5 — Vent Terminals. 802.9 — Condensation Drain. 802.9.1 — Local Experience. 802.10 — Vent Connectors for Category I Appliances. 802.10.1 — Materials. 802.10.1.1 — Unconditioned Area. Table 802.8.2 — Through-the-Wall Direct Vent Termination Clearances [NFPA 54: Table 12.9.3]
191	802.10.1.2 — Residential-Type Appliances. 802.10.1.2 — Residential-Type Appliances. 802.10.1.3 — Nonresidential Low-Heat Appliances. Table 802.10.1.3 — Minimum Thickness for Galvanized Steel Vent Connectors for Low-Heat Appliances [NFPA 54: Table 12.11.2.4] Figure 802.8 — Exit Terminals of Mechanical Draft and Direct Vent Venting Systems [NFPA 54: Figure A.12.9]
192	802.10.1.4 — Medium-Heat Appliances. 802.10.2 — Size of Vent Connector. 802.10.2.1 — Manifold. 802.10.2.2 — Size. 802.10.2.3 — Height. 802.10.2.4 — Size Increase. 802.10.3 — Two or More Appliances Connected to a Single Vent. 802.10.3.1 — Height of Connector. 802.10.3.2 — Pressure. 802.10.4 — Clearance. Table 802.10.1.4 — Minimum Thickness for Steel Vent Connectors for Medium-Heat Appliances [NFPA 54: Table 12.11.2.5]
193	802.10.5 — Joints. 802.10.6 — Slope. 802.10.7 — Length of Vent Connector. 802.10.7.1 — Single Wall Connector. 802.10.7.2 — Type B Double Wall Connector. 802.10.8 — Support. 802.10.9 — Chimney Connection. 802.10.10 — Inspection. 802.10.11 — Fireplaces. 802.10.12 — Passage through Ceilings, Floors, or Walls. 802.10.12.1 — Medium-Heat Appliances. 802.11 — Vent Connectors for Category II, Category III, and Category IV Appliances. 802.12 — Draft Hoods and Draft Controls. 802.12.1 — Installation. 802.12.2 — Draft Control Devices. 802.12.3 — Additional Devices.
194	802.12.4 — Location. 802.12.5 — Positioning. 802.12.6 — Clearance. 802.13 — Manually Operated Dampers. 802.14 — Obstructions. 802.15 — Automatically Operated Vent Dampers. 802.15.1 — Listing. 803.0 — Sizing of Category I Venting Systems. 803.1 — Single Appliance Vent Table 803.1.2(1) through Table 803.1.2(6). 803.1.1 — Vent Downsizing. 803.1.2 — Elbows.
195	803.1.3 — Zero Lateral. 803.1.4 — High-Altitude Installations. 803.1.5 — Multiple Input Ratings. 803.1.6 — Corrugated Chimney Liner Reduction. 803.1.7 — Connection to Chimney Liners. 803.1.8 — Vertical Vent Upsizing Using 7 x Rule. 803.1.9 — Draft Hood Conversion Accessories. 803.1.10 — Chimney and Vent Locations. 803.1.11 — Residential and Low-Heat Appliances. 803.1.11.1 — Clay Flue Lining. 803.1.11.2 — Chimney Lining. 803.1.12 — Corrugated Vent Connector Size. 803.1.13 — Upsizing. 803.1.14 — Single Run of Vent. 803.1.15 — Interpolation. 803.1.16 — Extrapolation. 803.1.17 — Engineering Methods. 803.1.18 — Height Entries.
196	803.2 — Multiple Appliance Vent Table 803.2(1) through Table 803.2(9). 803.2.1 — Vent Connector Maximum Length. 803.2.2 — Vent Connector Exceeding Maximum Length. 803.2.3 — Vent Connector Manifolds. 803.2.4 — Vent Offsets. 803.2.5 — Elbows in Vents. Table 803.2.1 — Vent Connector Maximum Length [NFPA 54: 13.2.2]
197	803.2.6 — Elbows in Connectors. 803.2.7 — Common Vent Minimum Size. 803.2.8 — Tee and Wye Fittings. 803.2.9 — Size of Fittings. 803.2.10 — High-Altitude Installations. 803.2.11 — Connector Rise. 803.2.12 — Vent Height. 803.2.13 — Multistory Installations. 803.2.14 — Size of Vents for Multistory Installations. 803.2.15 — Vent Type Multistory Installation. 803.2.16 — Offsets in Multistory Installations. 803.2.17 — Vertical Vent Size Limitation. 803.2.18 — Multiple Input Ratings. 803.2.19 — Corrugated Metallic Chimney LinerReduction. 803.2.20 — Chimneys and Vents.
198	803.2.21 — Vent Connector Sizing. 803.2.22 — Combination of Pipe Types and Sizes. 803.2.23 — Multiple Connector and Vent Sizes. 803.2.24 — Interpolation. 803.2.25 — Extrapolation. 803.2.26 — Engineering Methods. 803.2.27 — Height Entries.
199	Figure 803.1.2(6) — Range of Winter Design Temperatures Used in Analyzing Exterior Masonry Chimneys in The United States [NFPA 54: Figure F.2.4]
200	Table 803.1.2(1) — Type B Double-Wall Gas Vent [NFPA 54: Table 13.1(a)]*
203	Table 803.1.2(2) — Type B Double-Wall Gas Vent [NFPA 54: Table 13.1(b)]*
205	Table 803.1.2(3) — Masonry Chimney [NFPA 54: Table 13.1(c)]*
207	Table 803.1.2(4) — Masonry Chimney [NFPA 54: Table 13.1(d)]*
209	Table 803.1.2(5) — Single-Wall Metal Pipe or Type B Asbestos-Cement Vent [NFPA 54: Table 13.1(E)]*
210	Table 803.1.2(6) — Exterior Masonry Chimney [NFPA 54: Table 13.1(f)]
211	Table 803.2(1) — Type B Double-Wall Vent [NFPA 54: Table 13.2(a)]*
215	Table 803.2(2) — Type B Double-Wall Vent [NFPA 54: Table 13.2(b)]*
217	Table 803.2(3) — Masonry Chimney [NFPA 54: Table 13.2(c)]*
219	Table 803.2(4) — Masonry Chimney [NFPA 54: Table 13.2(d)]*
221	Table 803.2(5) — Single-Wall Metal Pipe or Type B Asbestos-Cement Vent [NFPA 54: Table 13.2(e)]* Table 803.2(6) — Exterior Masonry Chimney [NFPA 54: Table 13.2(f)]*
222	Table 803.2(7) — Exterior Masonry Chimney [NFPA 54: Table 13.2(g)]
223	Table 803.2(8) — Exterior Masonry Chimney [NFPA 54: Table 13.2(h)]*
224	Table 803.2(9) — Exterior Masonry Chimney [NFPA 54: Table 13.2(i)]
226	Chapter 9 — Installation of Specific Appliances
228	901.0 — General. 901.1 — Applicability. 902.0 — General. 902.1 — Nonindustrial Appliance. 902.2 — Combustion Air from Bedroom or Bathroom. 902.3 — Added or Converted Appliances. 902.4 — Type of Gas(es). 902.5 — Safety Shutoff Devices for Unlisted LP-Gas Appliances Used Indoors. 902.6 — Fuel Input Rate. 902.7 — Use of Air or Oxygen Under Pressure. 902.8 — Building Structural Members. 902.8.1 — Structural Capacity. 902.9 — Flammable Vapors. 902.10 — Solid-Fuel Burning Appliances. 902.11 — Combination of Appliances and Equipment. 902.12 — Protection of Gas Appliances from Fumes or Gases Other than Products of Combustion.
229	902.13 — Process Air. 902.14 — Gas Appliance Pressure Regulators. 902.15 — Venting of Gas Appliance Pressure Regulators. 902.16 — Bleed Lines for Diaphragm-Type Valves. 903.0 — Air-Conditioning Appliances. 903.1 — Electric Air Conditioners. 903.2 — Gas-Fired Air Conditioners and Heat Pumps. 903.2.1 — Independent Gas Piping. 903.2.2 — Connection of Gas Engine-Powered Air Conditioners. 903.2.3 — Clearances for Indoor Installation.
230	903.2.4 — Assembly and Installation. 903.2.5 — Refrigeration Coils. 903.2.6 — Switches in Electrical Supply Line. 904.0 — Central Heating Boilers and Furnaces. 904.1 — Location. 904.1.1 — Self-Closing Doors. 904.1.2 — Gasketing. 904.2 — Clearance. 904.2.1 — Listed Units. 904.2.2 — Unlisted Units. 904.2.3 — Listed and Unlisted Units. 904.2.4 — Front Clearance. 904.2.5 — Adjacent to Plaster or Noncombustible Materials. 904.2.6 — Interference. 904.2.7 — Central Heating Furnaces. 904.3 — Assembly and Installation.
231	904.3.1 — Under-Floor Installation. 904.3.1.1 — Supported by Ground. 904.3.1.2 — Supported from Above. 904.3.1.3 — Excavation. 904.4 — Temperature or Pressure Limiting Devices. 904.5 — Low-Water Cutoff. 904.6 — Steam Safety and Pressure Relief Valves. 904.6.1 — Discharge. 904.6.2 — Size. 904.6.3 — End Connections. 904.7 — Refrigeration Coils. Tables Table 904.2.2 — Clearances to Combustible Material for Unlisted Furnaces and Boilers* [NFPA 54: Table 10.3.2.2]
232	904.8 — Cooling Units Used with Heating Boilers. 904.8.1 — Exposed to Refrigerated Air Circulation. 904.9 — Furnace (Upright and Horizontal). 904.10 — Solid-Fuel-Fired Furnaces. 904.11 — Oil-Fired Central Furnaces. 904.12 — Commercial or Industrial Gas Heaters. 904.13 — Electric Central Furnaces. 905.0 — Duct Furnaces. 905.1 — Clearances. 905.2 — Installation of Duct Furnaces. 905.3 — Access Panels. 905.4 — Location of Draft Hoods and Controls. 905.5 — Circulating Air. 905.6 — Duct Furnaces Used with Refrigeration Systems. 905.6.1 — In Conjunction with Cooling Appliances. 905.6.2 — Located Upstream from Cooling Coils. 905.6.3 — Heat Exchangers.
233	905.7 — Installation in Commercial Garages and Aircraft Hangars. 905.8 — Electric Duct Heaters. 905.8.1 — Installation. 905.8.2 — Clearance. 906.0 — Floor Furnaces. 906.1 — Installation. 906.2 — Temperature Limit Controls. 906.3 — Combustion and Circulating Air. 906.4 — Placement. 906.5 — Bracing. 906.6 — Support. 906.7 — Clearance. 906.8 — Access. 906.9 — Seepage Pan.
234	906.10 — Wind Protection. 906.11 — Upper Floor Installations. 906.12 — First Floor Installation. 906.13 — Oil-Fired Floor Furnaces. 907.0 — Wall Furnaces. 907.1 — Installation. 907.1.1 — Unlisted Wall Furnaces. 907.1.2 — Vented Wall Furnaces. 907.1.3 — Direct Vent Wall Furnaces. 907.1.4 — Panels, Grilles, and Access Doors 907.2 — Location. 907.3 — Combustion and Circulating Air. 907.4 — Oil-Fired Wall Furnaces. 908.0 — Clothes Dryers. 908.1 — Electric Clothes Dryers. Figures Figure 907.1.2 — Installation of Type B-W Gas Vents for Vented Wall Furnaces [NFPA 54: Figure 10.26.1.3]
235	908.2 — Gas-Fired Clothes Dryers. 908.2.1 — Clearance. 908.2.2 — Exhausting to the Outdoors. 908.2.3 — Multiple-Family or Public Use. 909.0 — Conversion Burners. 909.1 — General. 910.0 — Burner Assemblies. 910.1 — Oil Burners. 910.2 — Gas Burners. 911.0 — Decorative Appliances for Installation in Vented Fireplaces. 911.1 — Prohibited Installations. 911.2 — Installation. 911.2.1 — Listed Decorative Appliance. 911.2.2 — Reserved. 911.2.3 — Unlisted Decorative Appliance. 911.3 — Fireplace Screens. 912.0 — Gas Fireplaces, Vented. 912.1 — Reserved. 912.2 — Installation. 912.3 — Combustion and Circulating Air.
236	913.0 — Factory-Built Fireplaces and Fireplace Stoves. 913.1 — Factory-Built Fireplaces. 913.1.1 — Gasketed Fireplace Doors. 913.2 — Fireplace Stoves. 913.3 — Fireplace Accessories. 914.0 — Non-Recirculating Direct Gas-Fired Industrial Air Heaters. 914.1 — Application. 914.2 — Prohibited Installations. 914.3 — Installation. 914.3.1 — Fresh Air Ventilation. 914.3.2 — Access Required. 914.4 — Clearance from Combustible Materials. 914.5 — Air Supply. 914.6 — Atmospheric Vents, Gas Reliefs, or Bleeds. 914.7 — Relief Openings. 914.7.1 — Infiltration Rate. 914.7.2 — Louver or Gravity Dampers. Table 911.2 — Free Opening Area of Chimney Damper for Venting Flue Gases From Unlisted Decorative Appliances for Installation in Vented Fireplaces [NFPA 54: Table 10.6.2.3]
237	914.8 — Purging. 915.0 — Recirculating Direct Gas-Fired Industrial Air Heaters. 915.1 — Application. 915.2 — Prohibited Installations. 915.3 — Installation. 915.4 — Clearance from Combustible Materials. 915.5 — Air Supply. 915.6 — Atmospheric Vents, Gas Reliefs, or Bleeds. 915.7 — Relief Openings. 915.7.1 — Infiltration Rate. 915.7.2 — Louver or Gravity Dampers. 915.8 — Purging. 916.0 — Room Heaters. 916.1 — Electric Room Heaters. 916.2 — Gas-Fired Room Heaters. 916.2.1 — Prohibited Installations. 916.2.1.1 — Unvented Room Heaters. 916.2.2 — Installations in Institutions.
238	916.2.3 — Clearance. 916.2.4 — Wall-Type Room Heaters. 916.3 — Solid-Fuel-Type Room Heaters. 917.0 — Unit Heaters. 917.1 — Support. 917.2 — Clearance. 917.2.1 — Floor-Mounted-Type Unit Heaters. 917.3 — Combustion and Circulating Air. 917.4 — Ductwork. 917.5 — Installation in Commercial Garages and Aircraft Hangars. 917.6 — Oil-Fired Unit Heaters. 918.0 — Food Service Appliance, Floor-Mounted. 918.1 — Clearance for Listed Appliances. 918.2 — Clearance for Unlisted Appliances.
239	918.3 — Mounting on Combustible Floors. 918.3.1 — Not Listed for Mounting on Combustible Floors. 918.4 — Installation on Noncombustible Floors. 918.5 — Combustible Material Adjacent to Cooking Top. 918.6 — Use with Casters. 918.7 — Level Installation. 918.8 — Ventilation. 919.0 — Food Service Appliances, Counter Appliances. 919.1 — Vertical Clearance. 919.2 — Clearance for Listed Appliances. 919.3 — Clearance for Unlisted Appliances.
240	919.4 — Mounting of Unlisted Appliances. 920.0 — Household Cooking Appliances. 920.1 — Electric Household Cooking Appliances. 920.2 — Gas-Fired Household Cooking Appliances. 920.3 — Floor-Mounted Units. 920.3.1 — Clearance from Combustible Material. 920.3.2 — Vertical Clearance Above Cooking Top. 920.4 — Built-In Units. 920.4.1 — Installation. 920.4.2 — Vertical Clearance. 920.4.3 — Level Installation. 921.0 — Cooking Appliances Listing. 921.1 — Commercial Electric Ranges.
241	921.2 — Commercial Wood-Fired Baking Ovens. 921.3 — Oil-Burning Ranges. 922.0 — Open-Top Broiler Units. 922.1 — Listed Units. 922.2 — Unlisted Units. 922.3 — Protection Above Domestic Units. 922.4 — Commercial Units. 923.0 — Outdoor Cooking Appliances. 923.1 — Listed Units. 923.2 — Unlisted Units. 924.0 — Illuminating Appliances. 924.1 — Clearances for Listed Appliances. 924.2 — Clearances for Unlisted Appliances. 924.2.1 — Open-Flame Type. 924.3 — Mounting on Buildings. 924.4 — Mounting on Posts. Table 924.2.1 — Clearances for Unlisted Outdoor Open-Flame Illuminating Appliances [NFPA 54: Table 10.15.2.2]
242	924.5 — Appliance Pressure Regulators. 925.0 — Incinerators and Crematories. 925.1 — Field Constructed Commercial-Industrial Incinerators. 925.2 — Factory-Built Commercial Crematories. 925.3 — Residential Incinerators. 926.0 — Infrared Heaters. 926.1 — Support. 926.2 — Clearance. 926.3 — Combustion and Ventilation Air. 926.3.1 — Exhaust Openings. 926.4 — Installation in Commercial Garages and Aircraft Hangars. 927.0 — Pool Heaters. 927.1 — Location. 927.2 — Clearance. 927.3 — Temperature or Pressure-Limiting Devices. 927.3.1 — Pressure Relief Valve. 927.4 — Bypass Valves. 927.5 — Venting. 928.0 — Refrigerators. 928.1 — Clearance. 928.2 — Venting or Ventilating Kits Approved for Use with a Refrigerator.
243	929.0 — Gas-Fired Toilets. 929.1 — Clearance. 929.2 — Installation on Combustible Floors. 929.3 — Vents. 930.0 — Appliances for Installation in Manufactured Housing. [Not adopted by HCD] 930.1 — General. [Not adopted by HCD] 931.0 — Small Ceramic Kilns. 931.1 — General. 931.2 — Installation. 931.3 — Fuel-Gas Controls. 931.4 — Electrical Equipment. 931.5 — Installations Inside Buildings. 931.5.1 — Kiln Clearances. 931.5.2 — Hoods. 931.5.3 — Gravity Ventilation Ducts. 931.5.4 — Makeup Air. 931.6 — Exterior Installations. 932.0 — Outdoor Open Flame Decorative Appliances. 932.1 — General. 932.1.1 — Listed Units. 932.1.2 — Unlisted Units.
244	932.1.3 — Connection to the Piping System. 933.0 — Evaporative Cooling Systems. 933.1 — General. 933.2 — Location. 933.3 — Access, Inspection, and Repair. 933.4 — Installation. 933.4.1 — Modifications to the Supporting Structure. 933.4.2 — On the Ground. 933.4.3 — On a Platform. 934.0 — Refrigeration Appliances. 934.1 — Self-Contained Refrigerators and Freezers. 934.2 — Unit Coolers. 934.3 — Self-Contained Mechanical Refrigeration Systems. 935.0 — Ductless Mini-Split Systems Installation. 935.1 — General. 936.0 — Air Filter Appliances. 936.1 — Electrostatic Air Cleaners. 936.2 — High-Efficiency Particulate Air Filter Units. 937.0 — Gaseous Hydrogen Systems. 937.1 — General. 938.0 — Compressed Natural Gas (CNG) Vehicular Fuel Systems. 938.1 General.
246	Chapter 10 — Boilers and Pressure Vessels
248	1001.0 — General. 1001.1 — Applicability. 1001.2 — Boiler Rooms and Enclosures. 1001.2.1 [OSHPD 1, 1R, 2, 3, 4 & 5] In no case shall boiler room volume or clearances be reduced below those required by the conditions of the boiler listing. 1001.3 — Air for Combustion and Ventilation. 1001.4 — Drainage. 1001.5 — Mounting. 1001.5.1 — Floors. 1001.6 — Chimneys or Vents. 1002.0 — Standards. 1002.1 — General. 1002.2 — Oil-Burning Boilers. 1002.2.1 — Listing & Labeling. 1002.2.2 — Installation. 1002.3 — Electric Boilers. 1002.4 — Solid-Fuel-Fired Boilers. 1002.5 — Dual Purpose Water Heater. 1003.0 — Detailed Requirements. 1003.1 — Safety Requirements.
249	1003.2 — Controls. 1003.2.1 — Automatic Boilers. 1003.3 — Gauges. 1003.4 — Stack Dampers. 1003.5 — Welding. 1004.0 — Expansion Tanks. 1004.1 — General. 1004.2 — Open-Type Expansion Tanks. 1004.3 — Closed-Type Systems. 1004.4 — Minimum Capacity of Closed-Type Tank. Tables Table 1004.4(1) — Expansion Tank Capacities for Gravity Hot Water Systems
250	1005.0 — Safety or Relief Valve Discharge. 1005.1 — General. 1005.2 — Discharge Piping. 1005.3 — Splash Shield. 1005.4 — Hazardous Discharge. 1005.5 — Vacuum Relief Valve. 1006.0 — Shutoff Valves. 1006.1 — General. 1007.0 — Gas-Pressure Regulators. 1007.1 — General. 1008.0 — Low-Water Cutoff. 1008.1 — General. 1009.0 — Combustion Regulators – Safety Valves. 1009.1 — General. Table 1004.4(2) — Expansion Tank Capacities for Forced Hot Water Systems
251	1010.0 — Clearance for Access. 1010.1 — General. 1010.2 — Power Boilers. 1010.3 — Steam-Heating Boilers, Hot Water Boilers, and Power Boilers. 1010.4 — Package Boilers, Steam-Heating Boilers, and Hot-Water-Heating Boilers. 1011.0 — Boilers, Stokers, and Steam Generators. 1011.1 — General. 1012.0 — Operating Adjustments and Instructions. 1012.1 — General. 1013.0 — Inspections and Tests. 1013.1 — General. 1013.2 — Operating Permit. 1013.3 — Maintenance Inspection. 1013.4 — Power and Miniature Boilers.
252	1013.5 — Steam-Heating and Water-Heating Boilers. 1013.6 — Automatic Steam-Heating Boilers. 1013.7 — Unfired Pressure Vessels. 1014.0 — Operation and Maintenance of Boilers and Pressure Vessels. 1014.1 — General.
253	Table 1003.2.1 — Controls and Limit Devices for Automatic Boilers
256	Chapter 11 — Refrigeration
258	1101.0 — General. 1101.1 — Applicability. 1101.2 — Equipment. Part I – Refrigeration Systems. 1102.0 — Refrigeration Systems. 1102.1 — General. 1102.2 — Ammonia Refrigeration Systems. 1102.3 — Refrigerants. 1103.0 — Classification. 1103.1 — Classification of Refrigerants. 1103.1.1 — Safety Group. 1103.2 — Classification of Refrigeration Systems. 1103.2.1 — High-Probability System. 1103.2.2 — Low-Probability System. 1103.3 — Higher Flammability Refrigerants. 1104.0 — Requirements for Refrigerant and Refrigeration System Use. 1104.1 — System Selection. 1104.2 — Refrigerant Concentration Limit.
259	1104.2.1 — Volume Calculations. 1104.2.2 — Nonconnecting Spaces. 1104.2.3 — Ventilated Spaces. 1104.2.3.1 — Closures. 1104.2.3.2 — Plenums. 1104.2.3.3 — Supply and Return Ducts. 1104.3 — Institutional Occupancies. 1104.4 — Industrial Occupancies and Refrigerated Rooms. 1104.5 — Flammable Refrigerants. 1104.6 — Applications for Human Comfort and for Nonindustrial Occupancies.
260	1104.7 — Refrigerant Type and Purity. 1104.7.1 — Recovered Refrigerants. 1104.7.2 — Recycled Refrigerants. 1104.7.3 — Reclaimed Refrigerants. 1104.7.4 — Mixing. 1104.8 — Changing Refrigerants. 1105.0 — General Requirements. 1105.1 — Human Comfort. 1105.2 — Supports and Anchorage. 1105.3 — Access. 1105.4 — Illumination and Service Receptacles.
261	1105.5 — Ventilation of Rooms Containing Condensing Units. 1105.5.1 — Permanent Gravity Ventilation Openings. 1105.5.2 — Mechanical Exhaust System. 1105.6 — Prohibited Locations. 1105.7 — Condensate. 1105.8 — Defrost. 1105.9 — Overflows. 1105.10 — Condensate, Defrost, and Overflow Disposal. 1105.11 — Refrigerant Port Protection. 1105.12 — Storage. 1105.12.1 — Quantity. 1106.0 — Refrigeration Machinery Rooms. 1106.1 — Where Required. 1106.1.1 — Quantity. 1106.1.2 — Equipment. 1106.1.3 — A1 System. 1106.1.4 — A1 Refrigerant.
262	1106.2 — Refrigeration Machinery Room, General Requirements. 1106.2.1 — Access. 1106.2.2 — Openings. 1106.2.2.1 — Detectors and Alarms. 1106.2.2.2 — Refrigerant Detectors. 1106.2.3 — Mechanical Ventilation. 1106.2.4 — Ventilation. 1106.2.5 — Emergency Ventilation-Required Airflow. 1106.2.5.1 — Ventilation – A1, A2, A3, B1, B2L, B2 and B3 refrigerants.
263	1106.2.5.2 — Ventilation – Group A2L Refrigerants. 1106.3 — Normal Operation. 1106.4 — Natural Ventilation. 1106.5 — Combustion Air. 1106.6 — Airflow. 1106.7 — Ventilation Intake. Tables Table 1106.2.5.2 — Required Airflow for Group A2L Refrigerants
264	1106.8 — Maximum Temperature. 1106.9 — Refrigerant Parts in Air Duct. 1106.10 — Dimensions. 1106.11 — Restricted Access. 1106.12 — Exits. 1107.0 — Machinery Room, Special Requirements. 1107.1 — General. 1107.1.1 — Flame-Producing Devices. 1107.1.2 — Doors. 1107.1.3 — Walls, Floors, and Ceilings. 1107.1.4 — Machinery Rooms. 1107.1.5 — Exterior Openings. 1107.1.6 — Sealing. 1107.1.7 — Group A2L and B2L Refrigerants. 1107.1.7.1 — Mechanical Ventilation. 1107.1.7.2 — Refrigeration Detectors. 1107.1.7.3 — Machinery Rooms. 1107.1.8 — Group A2, A3, B2, or B3 Refrigerants. 1107.1.9 — Refrigeration Systems. 1107.1.10 — Remote Control. 1108.0 — Refrigeration Machinery Room Equipment and Controls. 1108.1 — General. 1108.2 — Electrical.
265	1108.3 — Emergency Shut-off. 1108.4 — Installation, Maintenance, and Testing. 1108.5 — Emergency Pressure Control System. 1109.0 — Refrigeration Piping, Containers, and Valves. 1109.1 — Materials. 1109.1.1 — Copper and Copper Alloy Pipe. 1109.1.2 — Copper Linesets. 1109.1.3 — Iron and Steel. 1109.1.4 — Prohibited Contact. 1109.2 — Joints. 1109.3 — Penetration of Piping. 1109.4 — Location of Refrigeration Piping. 1109.4.1 — Protection from Mechanical Damage. 1109.5 — Underground Piping. 1109.5.1 — Piping in Concrete Floors. 1109.6 — Support.
266	1109.7 — Pipe Enclosure. 1109.8 — Visual Inspection. 1109.9 — Condensation. 1109.10 — Identification. 1110.0 — Valves. 1110.1 — More than 6.6 Pounds of Refrigerant. 1110.2 — More than 110 Pounds of Refrigerant. 1110.3 — Support. 1110.4 — Access. 1110.5 — Identification. 1111.0 — Pressure-Limiting Devices. 1111.1 — Where Required. 1111.2 — Setting.
267	1111.3 — Location. 1111.4 — Emergency Stop. 1112.0 — Pressure-Relief Devices. 1112.1 — General. 1112.2 — Positive Displacement Compressor. 1112.3 — Liquid-Containing Portions of Systems. 1112.4 — Evaporators. 1112.5 — Hydrostatic Expansion. 1112.5.1 — Hydrostatic Expansion During Normal Operation.
268	1112.5.2 — Hydrostatic Expansion During Maintenance. 1112.6 — Actuation. 1112.7 — Stop Valves Prohibited. 1112.8 — Location. 1112.9 — Materials. 1112.10 — Pressure-Relief Device Settings. 1112.10.1 — Rupture Member Setting. 1112.11 — Discharge from Pressure-Relief Devices. 1112.11.1 — Discharging Location Interior to Building. 1112.11.2 — Discharging Location Exterior to Building.
269	1112.11.3 — Internal Relief. 1112.11.4 — Discharge Location, Special Requirements. 1112.11.4.1 — Water (R-718). 1112.12 — Discharge Piping. 1112.12.1 — Piping Connection. 1112.12.2 — Pipe Size. 1112.12.3 — Maximum Length. 1112.12.4 — Design Back Pressure. Table 1112.12.3 — Atmospheric Pressure at Nominal Installation Elevation (Pa) [ASHRAE 15: Table 9.7.9.3.2]
270	1112.12.5 — Simultaneous Operation. 1112.13 — Rating of Pressure-Relief Device. 1112.14 — Rating of Rupture Members and Fusible Plugs. 1113.0 — Overpressure Protection. 1113.1 — General. 1113.2 — Type of Protection. 1113.3 — Discharging into Lowside of System. 1113.4 — Parallel Pressure-Relief Devices. 1113.5 — Discharge Capacity.
271	1113.6 — Three-Way Valve. 1114.0 — Special Discharge Requirements. 1114.1 — General. 1114.2 — Design Requirements. 1114.3 — Testing. 1115.0 — Labeling and Identification. 1115.1 — General. 1115.2 — Volume and Type. 1115.3 — Permanent Sign. Table 1113.5 — Relief Devices Capacity Factor [ASHRAE 15: Table 9.75]
272	1115.4 — Marking of Pressure-Relief Devices. 1115.4.1 — Rupture Members. 1115.4.2 — Fusible Plugs. 1116.0 — Testing of Refrigeration Equipment. 1116.1 — Factory Tests. 1116.1.1 — Testing Procedure. 1116.1.2 — Applied Pressure. 1116.1.3 — Design Pressure of 15 psig or Less. 1116.2 — Field Tests. 1116.3 — Test Gases. Table 1116.2— Field Leak Test Pressures (psig)*
273	1116.4 — Declaration. 1116.5 — Brine Systems. 1117.0 — Refrigerant-Containing Pressure Vessels. 1117.1 — Inside Dimensions 6 Inches or Less. 1117.1.1 — Pressure-Relief Device. 1117.1.2 — Fusible Plug. 1117.2 — Inside Dimensions More than 6 Inches. 1117.3 — Pressure Vessels for 15 psig or Less. 1118.0 — Maintenance and Operation. 1118.1 — General. Part II – Cooling Towers. 1119.0 — General. 1119.1 — Applicability. 1120.0 — Support and Anchorage. 1120.1 — General. 1121.0 — Drainage. 1121.1 — General. 1122.0 — Chemical Treatment Systems. 1122.1 — General.
274	1122.2 — Automated Control of Cycles of Concentration. 1123.0 — Location. 1123.1 — General. 1124.0 — Electrical. 1124.1 — General. 1125.0 — Refrigerants and Hazardous Fluids. 1125.1 — General. 1126.0 — Drift Eliminators. 1126.1 — General.
275	Table 1102.3 — Refrigerant Groups, Properties, and Allowable Quantities [ASHRAE 34: TABLE 4-1, Table 4-2]
280	Table 1104.1 — Permissible Refrigeration Systems
282	Chapter 12 — Hydronics
284	1201.0 — General. 1201.1 — Applicability. 1201.2 — Insulation. 1201.3 — Water Hammer. 1201.4 — Terminal Units. 1201.5 — Return-Water Low-Temperature Protection. 1202.0 — Protection of Potable Water Supply. 1202.1 — Prohibited Sources. 1202.2 — Chemical Injection. 1202.3 — Compatibility. 1203.0 — Capacity of Heat Source. 1203.1 — Heat Source. 1203.2 — Dual Purpose Water Heater. 1203.3 — Tankless Water Heaters. 1204.0 — Identification of a Potable and Nonpotable Water System. 1204.1 — General. 1204.2 — Color and Information. 1204.3 — Potable Water. 1204.4 — Nonpotable Water. Tables Table 1203.2 — Water Heaters
285	1204.5 — Location of Piping Identification. 1204.6 — Flow Directions. 1205.0 — Installation, Testing, and Inspection. 1205.1 — Operating Instructions. 1205.2 — Pressure Testing. 1205.3 — Flushing. 1206.0 — Pressure and Safety Devices. 1206.1 — General. 1206.2 — Discharge Piping. 1207.0 — Heating Appliances and Equipment. 1207.1 — General. 1207.2 — Boilers. 1207.2.1 — Condensing Boilers. 1207.2.2 — Noncondensing Boilers. 1207.3 — Dual-Purpose Water Heaters. Table 1204.3 — Minimum Length of Color Field and Size Letters
286	1207.3.1 — Temperature Limitations. 1207.4 — Solar Heat Collector Systems. 1208.0 — Circulators and Pumps. 1208.1 — General. 1208.2 — Mounting. 1208.3 — Sizing. 1209.0 — Expansion Tanks. 1209.1 — General. 1209.2 — Installation. 1209.3 — Open-Type Expansion Tanks. 1209.4 — Closed-Type Tanks. 1209.5 — Sizing. 1210.0 — Materials. 1210.1 — Piping, Tubing, and Fittings. 1210.2 — Expansion and Contraction. 1210.3 — Hangers and Supports. 1210.4 — Oxygen Diffusion Corrosion. 1211.0 — Joints and Connections. 1211.1 — General.
287	1211.2 — Chlorinated Polyvinyl Chloride (CPVC) Pipe. Table 1210.1 — Materials for Hydronic System Piping, Tubing, and Fittings
288	1211.3 — CPVC/AL/CPVC Plastic Pipe and Joints. 1211.4 — Copper or Copper Alloy Pipe and Tubing.
289	1211.5 — Cross-Linked Polyethylene (PEX) Pipe. 1211.6 — Cross-Linked Polyethylene/Aluminum/Cross-Linked Polyethylene (PEX-AL-PEX) Pipe. 1211.7 — Ductile Iron Pipe. 1211.8 — Polyethylene (PE) Plastic Pipe/Tubing. 1211.9 — Polyethylene/Aluminum/Polyethylene (PE-ALPE).
290	1211.10 — Polyethylene of Raised Temperature (PE-RT). 1211.11 — Polypropylene (PP) Pipe. 1211.12 — Polyvinyl Chloride (PVC) Pipe. 1211.13 — Steel Pipe and Tubing. 1211.14 — Joints Between Various Materials. 1211.14.1 — Copper or Copper Alloy Pipe or Tubing to Threaded Pipe Joints.
291	1211.14.2 — Plastic Pipe to Other Materials. 1212.0 — Valves. 1212.1 — General. 1212.2 — Where Required. 1212.3 — Heat Exchanger. 1212.4 — Pressure Vessels. 1212.5 — Pressure Reducing Valves. 1212.6 — Equipment, Components, and Appliances. 1212.7 — Expansion Tank. 1212.8 — Flow Balancing Valves. 1212.9 — Mixing or Temperature Control Valves. 1212.10 — Thermosiphoning. 1212.11 — Air Removal Device or Air Vents. 1213.0 — System Controls. 1213.1 — Water Temperature Controls. 1213.2 — Operating Steam Controls. 1213.2.1 — Water-Level Controls. 1213.3 — Occupied Spaces. 1213.4 — Simultaneous Operation. 1213.5 — Temperature Reading. 1214.0 — Pressure and Flow Controls. 1214.1 — Balancing. 1214.2 — Low-Water Control. 1214.3 — Flow-Sensing Devices. 1214.4 — Automatic Makeup Fluid. 1214.5 — Differential Pressure Regulation.
292	1214.5.1 — Differential Pressure Bypass Valve. 1214.6 — Air-Removal Device. 1214.7 — Air-Separation Device. 1214.8 — Secondary Loops. 1215.0 — Hydronic Space Heating. 1215.1 — General. 1215.2 — Installation. 1215.3 — Freeze Protection. 1215.4 — Balancing. 1215.5 — Heat Transfer Fluid. 1216.0 — Steam Systems. 1216.1 — Steam Traps. 1216.2 — Sloping for Two-Pipe System. 1216.3 — Sloping for One-Pipe System. 1216.4 — Automatic Air Vents. 1216.5 — Condensate Flow. 1216.6 — Steam-Distribution Piping. 1217.0 — Radiant Heating and Cooling. 1217.1 — Installation. 1217.1.1 — Manifolds. 1217.2 — Radiant Under-Floor Heating. 1217.3 — Radiant Cooling Systems. 1217.4 — Tube Placement.
293	1217.5 — Poured Floor Structural Concrete Slab Systems (Thermal Mass). 1217.5.1 — Slab Penetration Tube and Joint Protection. 1217.5.2 — Insulation. 1217.5.2.1 — California Energy Code Insulation Requirements for Heated Slab Floors. 1217.5.3 — Types of Tube Fasteners. 1217.5.4 — Spacing of Tube Fasteners. 1217.6 — Joist Systems and Subfloors. 1217.6.1 — Tubing Fasteners. 1217.7 — Wall and Ceiling Panels. Table 1217.4 — Maximum Length of Continuous Tubing From a Supply-and-Return Manifold Arrangement
294	1217.7.1 — California Energy Code Pipe Insulation Requirements. 1217.8 — Radiant Heating and Cooling Panels. 1217.8.1 — Electric Heating Panel Systems. 1217.8.2 — Radiant Wall and Ceiling Panels. 1218.0 — Heat Exchangers. 1218.1 — General. 1219.0 — Indirect-Fired Domestic Hot-Water Storage Tanks. 1219.1 — General. 1220.0 — Snow and Ice Melt Systems. 1220.1 — Use of Chemical Additives and Corrosive Fluids. 1220.2 — Types of Tube Fasteners. 1220.3 — Spacing of Tube Fasteners.
295	1220.4 — Snow and Ice Melt Controls. 1220.4.1 — Tube Placement. 1220.4.2 — Poured Structural Concrete Slab Systems. 1220.4.3 — Slab Penetration Tube and Joint Protection. 1220.4.4 — Concrete Slab Preparation. 1220.4.5 — Insulation. 1220.4.5.1 — California Energy Code Insulation Requirements for Heated Slab Floors. 1220.4.6 — Testing and Flushing. 1220.5 — Hydronic Makeup Air Units. 1221.0 — Piping Installation. 1221.1 — General. 1221.2 — Embedded Piping Materials and Joints. 1221.2.1 — Steel Pipe. 1221.2.2 — Copper Tubing. 1221.2.3 — Plastics. Table 1220.4.1 — Loop Lengths for Snow and Ice Melt Systems
296	1221.3 — Pressure Testing. 1221.4 — System Drainage. 1221.5 — Condensate Drainage. 1221.6 — Clearance to Combustibles.
298	Chapter 13 — Fuel Gas Piping
300	1301.0 — Scope of Gas Piping. 1301.1 — Applicability. 1302.0 — Coverage of Piping System. 1302.1 — General. 1302.2 — Piping System Requirements. 1302.3 — Applications. 1303.0 — Inspection. 1303.1 — Inspection Notification. 1303.2 — Excavation. 1303.3 — Type of Inspections. 1303.3.1 — Rough Piping Inspection. 1303.3.2 — Final Piping Inspection.
301	1303.3.3 — Test Gauges. 1303.3.3.1 — Pressure Tests (10 psi or less). 1303.3.3.2 — Pressure Tests (greater than 10psi to 100 psi). 1303.3.3.3 — Pressure Tests (exceeding 100 psi). 1303.3.3.4 — Pressure Range. 1303.4 — Inspection Waived. 1304.0 — Certificate of Inspection. 1304.1 — Issuance. 1304.2 — Gas Supplier. 1304.3 — Unlawful. 1305.0 — Authority to Render Gas Service. 1305.1 — Authorized Personnel. 1305.2 — Outlets. 1306.0 — Authority to Disconnect. 1306.1 — Disconnection. 1306.2 — Notice. 1306.3 — Capped Outlets. 1307.0 — Temporary Use of Gas. 1307.1 — General. 1308.0 — Gas Piping System Design, Materials, and Components. 1308.1 — Installation of Piping System. 1308.1.1 — Addition to Existing System. 1308.2 — Provision for Location of Point of Delivery. 1308.3 — Interconnections Between Gas Piping Systems. 1308.3.1 — Interconnections for Standby Fuels.
302	1308.4 — Sizing of Gas Piping Systems. 1308.4.1 — Maximum Gas Demand. 1308.4.2 — Sizing Methods. 1308.4.3 — Allowable Pressure Drop. 1308.5 — Acceptable Piping Materials and Joining Methods. 1308.5.1 — Used Materials. 1308.5.1.1 — Other Materials. 1308.5.2 — Metallic Pipe. 1308.5.2.1 — Steel, Stainless Steel, and Wrought-Iron. 1308.5.2.2 — Copper and Copper Alloy Pipe. Tables Table 1308.4.1 — Approximate Gas Input for Typical Appliances [NFPA 54: Table A.5.4.2.1]
303	1308.5.2.3 — Aluminum Alloy Pipe. 1308.5.3 — Metallic Tubing. 1308.5.3.1 — Stainless Steel Tubing. 1308.5.3.2 — Steel Tubing. 1308.5.3.3 — Copper and Copper Alloy Tubing. 1308.5.3.4 — Aluminum Alloy Tubing. 1308.5.3.5 Corrugated Stainless Steel Tubing. 1308.5.4 — Plastic Pipe, Tubing, and Fittings. 1308.5.4.1 — Regulator Vent Piping. 1308.5.4.2 — Anodeless Risers. 1308.5.4.2.1 — Factory-Assembled Anodeless Risers. 1308.5.4.2.2 — Service Head Adapters and Field-Assembled Anodeless Risers. 1308.5.4.2.3 — Undiluted Liquefied Petroleum Gas Piping. 1308.5.5 — Workmanship and Defects. 1308.5.6 — Metallic Pipe Threads. 1308.5.6.1 — Damaged Threads. 1308.5.6.2 — Number of Threads. Table 1308.5.6.2 — Specifications for Threading Metallic Pipe [NFPA 54: Table 5.6.6.3]
304	1308.5.6.3 — Thread Joint Compounds. 1308.5.7 — Metallic Piping Joints and Fittings. 1308.5.7.1 — Pipe Joints. 1308.5.7.2 — Copper Tubing Joints. 1308.5.7.3 — Stainless Steel Tubing Joints. 1308.5.7.4 — Flared Joints. 1308.5.7.5 — Metallic Pipe Fittings. 1308.5.8 — Plastic Piping, Joints, and Fittings.
305	1308.5.8.1 — Joint Design. 1308.5.8.2 — Heat Fusion Joint. 1308.5.8.3 — Compression-Type Mechanical Joints. 1308.5.8.4 — Liquefied Petroleum Gas Piping Systems. 1308.5.9 — Flange Specifications. 1308.5.9.1 — Steel Flanges. 1308.5.9.2 — Non-Ferrous Flanges. 1308.5.9.3 — Ductile Iron Flanges. 1308.5.9.4 — Dissimilar Flange Connections. 1308.5.9.5 — Flange Facings. 1308.5.9.6 — Lapped Flanges. 1308.5.10 — Flange Gaskets. 1308.5.10.1 — Flange Gasket Materials. 1308.5.10.2 — Metallic Flange Gaskets. 1308.5.10.3 — Non-Metallic Flange Gaskets. 1308.5.10.4 — Full-Face Flange Gasket. 1308.5.10.5 — Separated Flanges. 1308.6 — Gas Meters. 1308.6.1 — Location. 1308.6.1.1 — Subject to Damage. 1308.6.1.2 — Extreme Temperatures. 1308.6.2 — Supports. 1308.6.3 — Meter Protection.
306	1308.6.4 — Identification. 1308.7 — Gas Pressure Regulators. 1308.7.1 — Listing. 1308.7.2 — Location. 1308.7.3 — Regulator Protection. 1308.7.4 — Venting of Line Pressure Regulators. 1308.7.5 — Venting of Gas Appliance Pressure Regulators. 1308.7.6 — Bypass Piping. 1308.7.7 — Identification. 1308.8 — Overpressure Protection. 1308.9 — Pressure Limitation Requirements. 1308.9.1 — Overpressure Protection Required. 1308.9.2 — Overpressure Protection Devices. 1308.9.3 — Detection of Failure. 1308.9.4 — Flow Capacity.
307	1308.10 — Overpressure Protection Devices. 1308.10.1 — Separate Devices. 1308.10.2 — Construction and Installation. 1308.10.3 — External Control Piping. 1308.10.4 — Setting. 1308.10.5 — Unauthorized Operation. 1308.10.6 — Discharge of Vents. 1308.10.7 — Size of Fittings, Pipe, and Openings. 1308.11 — Backpressure Protection. 1308.11.1 — Protective Devices. 1308.12 — Low-Pressure Protection. 1308.13 — Shutoff Valves. 1308.14 — Expansion and Flexibility. 1308.14.1 — Special Local Conditions.
308	1309.0 — Excess Flow Valve. 1309.1 — General. 1310.0 — Gas Piping Installation. 1310.1 — Piping Underground. 1310.1.1 — Cover Requirements. 1310.1.2 — Trenches. 1310.1.2.1 — Backfilling. 1310.1.3 — Protection Against Corrosion. 1310.1.3.1 — Zinc Coating. 1310.1.3.2 — Underground Piping. 1310.1.3.3 — Cathodic Protection. 1310.1.3.4 — Sacrificial Anodes. 1310.1.3.5 — System Failing Tests. 1310.1.3.6 — Impressed Current Cathodic Protection. 1310.1.3.7 — Documentation. 1310.1.3.8 — Dissimilar Metals. 1310.1.3.9 — Steel Risers.
309	1310.1.4 — Protection Against Freezing. 1310.1.5 — Piping Through Foundation Wall. 1310.1.6 — Piping Underground Beneath Buildings. 1310.1.6.1 — Conduit with One End Terminating Outdoors. 1310.1.6.2 — Conduit with Both Ends Terminating Indoors. 1310.1.7 — Plastic Piping. 1310.1.7.1 — Connections Between Metallic and Plastic Piping. 1310.1.7.2 — Tracer Wire. 1310.2 — CSST Piping Systems. 1310.3 — Installation of Aboveground Piping. 1310.3.1 — Protective Coating. 1310.3.2 — Building Structure. 1310.3.3 — Gas Piping to be Sloped. 1310.3.3.1 — Ceiling Locations. 1310.3.4 — Prohibited Locations.
310	1310.3.5 — Hangers, Supports, and Anchors. 1310.3.5.1 — Spacing. 1310.3.5.2 — Expansion and Contraction. 1310.3.5.3 — Piping on Roof Tops. 1310.3.6 — Removal of Piping. 1310.4 — Concealed Piping in Buildings. 1310.4.1 — Connections. 1310.4.2 — Piping in Partitions. 1310.4.3 — Tubing in Partitions. 1310.4.4 — Piping in Floors. 1310.5 — Piping in Vertical Chases. 1310.5.1 — Pressure Reduction. Table 1310.3.5.1— Support of Piping [NFPA 54: Table 7.2.6.2]
311	1310.5.2 — Chase Construction. 1310.5.3 — Ventilation. 1310.6 — Maximum Operating Pressure in Buildings. 1310.6.1 — LP-Gas Systems. 1310.7 — Appliance Overpressure Protection. 1310.8 — Gas Pipe Turns. 1310.8.1 — Metallic Pipe. 1310.8.2 — Plastic Pipe. 1310.8.3 — Elbows. 1310.9 — Drips and Sediment Traps. 1310.9.1 — Location of Drips. 1310.9.2 — Sediment Traps. 1310.10 — Outlets.
312	1310.10.1 — Cap Outlets. 1310.10.1.1 — Appliance Shutoff Valves. 1310.11 — Manual Gas Shutoff Valves. 1310.11.1 — Valves Controlling Multiple Systems. 1310.11.1.1 — Shutoff Valves for Multiple House Lines. 1310.11.2 — Emergency Shutoff Valves. 1310.11.3 — Shutoff Valve for Laboratories. 1310.12 — Prohibited Devices. 1310.13 — Systems Containing Gas-Air Mixtures Outside the Flammable Range. 1310.14 — Systems Containing Flammable Gas-Air Mixtures. 1310.14.1 — Required Components. 1310.14.2 — Optional Components. 1310.14.3 — Additional Requirements. 1310.14.4 — Special Requirements for Mixing Blowers.
313	1310.14.5 — Installation of Gas-Mixing Machines. 1310.14.6 — Use of Automatic Firechecks, Safety Blowouts, or Backfire Preventers. 1311.0 — Electrical Bonding and Grounding. 1311.1 — Pipe and Tubing Other than CSST. 1311.2 — Bonding of CSST Gas Piping. 1311.2.1 — Bonding Jumper Connection. 1311.2.2 — Bonding Jumper Size. 1311.2.3 — Bonding Jumper Length.
314	1311.2.4 — Bonding Connections. 1311.2.5 — Devices Used for Bonding. 1311.3 — Arc-Resistant Jacketed CSST. 1311.4 — Prohibited Use. 1311.5 — Lightning Protection System. 1311.6 — Electrical Circuits. 1311.7 — Electrical Connections. 1311.7.1 — Safety Control. 1312.0 — Appliance and Equipment Connections to Building Piping. 1312.1 — Connecting Appliances and Equipment. 1312.1.1 — Commercial Cooking Appliances. 1312.1.2 — Restraining Device. 1312.2 — Suspended Low-Intensity Infrared Tube Heaters. 1312.3 — Use of Nonmetalic Gas Hose Connectors. 1312.3.1 — Indoor. 1312.3.2 — Outdoor.
315	1312.4 — Injection (Bunsen) Burners. 1312.5 — Connection of Portable and Mobile Industrial Appliances. 1312.5.1 — Swivel Joints or Couplings. 1312.5.2 — Metal Flexible Connectors. 1312.5.3 — Flexible Connectors. 1312.6 — Appliance Shutoff Valves and Connections. 1312.7 — Quick-Disconnect Devices. 1312.8 — Gas Convenience Outlets. 1312.9 — Sediment Trap. 1312.10 — Installation of Piping. 1312.11 — Liquefied Petroleum Gas Facilities and Piping. 1313.0 — Pressure Testing, Inspection, and Purging. 1313.1 — Piping Installations. Figures Figure 1312.9 — Method of Installing a Tee Fiting Sediment Trap [NFPA 54: Figure 9.6.8]
316	1313.1.1 — Inspection Requirements. 1313.1.2 — Repairs and Additions. 1313.1.3 — New Branches. 1313.1.4 — Piping System. 1313.1.5 — Regulators and Valves. 1313.1.6 — Test Medium. 1313.2 — Test Preparation. 1313.2.1 — Pipe Joints. 1313.2.2 — Expansion Joints. 1313.2.3 — Appliances and Equipment. 1313.2.4 — Designed for Operating Pressures Less than Test Pressure. 1313.2.5 — Designed for Operating Pressures Equal to or Greater than Test Pressure. 1313.2.6 — Safety. 1313.3 — Test Pressure. 1313.4 — Detection of Leaks and Defects. 1313.4.1 — Detecting Leaks. 1313.4.2 — Repair or Replace. 1313.5 — Piping System Leak Test. 1313.5.1 — Turning Gas On.
317	1313.5.2 — Leak Check. 1313.5.3 — Placing Appliances and Equipment in Operation. 1313.6 — Purging Requirements. 1313.6.1 — Piping Systems Required to be Purged Outdoors. 1313.6.1.1 — Removal from Service. 1313.6.1.2 — Placing in Operation. 1313.6.1.3 — Outdoor Discharge of Purged Gases. 1313.6.1.4 — Combustible Gas Indicator. 1313.6.2 — Piping Systems Allowed to be Purged Indoors or Outdoors. 1313.6.2.1 — Purging Procedure. Table 1313.6.1 — Size and Length of Piping [NFPA 54: Table 8.3.1]
318	1313.6.2.2 — Combustible Gas Detector. 1313.6.3 — Purging Appliances and Equipment. 1314.0 — Required Gas Supply. 1314.1 — General. 1314.2 — Volume. 1314.3 — Gas Appliances. 1314.4 — Size of Piping Outlets. 1315.0 — Required Gas Piping Size. 1315.1 — Pipe Sizing Methods. 1315.1.1 — Longest Length Method. 1315.1.2 — Branch Length Method. 1315.1.3 — Hybrid Pressure. 1315.2 — Sizing of Gas Piping Systems. 1315.2.1 — Natural Gas Piping Systems. 1315.2.2 — Propane Piping Systems. 1315.3 — Sizing Equations.
319	1315.4 — Sizing of Piping Sections. 1315.5 — Engineering Methods. 1315.6 — Variable Gas Pressures. Table 1315.3 — Cr and Y for Natural Gas and Undiluted Propane at Standard Conditions [NFPA 54: TABLE 6.4.2]
320	Figure 1315.1.1 — Example Illustrated Use of Table 1308.4.1 and Table 1315.2(1)
321	Table 1315.2(1) — Schedule 40 Metallic Pipe [NFPA 54: Table 6.2.1(b)]
322	Table 1315.2(2) — Schedule 40 Metallic Pipe [NFPA 54: Table 6.2.1(c)]
323	Table 1315.2(3) — Schedule 40 Metallic Pipe [NFPA 54: Table 6.2.1(d)]*
324	Table 1315.2(4) — Schedule 40 Metallic Pipe [NFPA 54: Table 6.2.1(e)]*
325	Table 1315.2(5) — Schedule 40 Metallic Pipe [NFPA 54: Table 6.2.1(f)]*
326	Table 1315.2(6) — Schedule 40 Metallic Pipe [NFPA 54: Table 6.2.1(g)]*
327	Table 1315.2(7) — Semi-Rigid Copper Tubing [NFPA 54: Table 6.2.1(h)]
328	Table 1315.2(8) — Semi-Rigid Copper Tubing [NFPA 54: Table 6.2.1(i)]
329	TABLE 1315.2(9) — Semi-Rigid Copper Tubing [NFPA 54: Table 6.2.1(j)]
330	Table 1315.2(10) — Semi-Rigid Copper Tubing [NFPA 54: Table 6.2.1(k)]
331	Table 1315.2(11) — Semi-Rigid Copper Tubing [NFPA 54: Table 6.2.1(l)]
332	Table 1315.2(12) — Semi-Rigid Copper Tubing [NFPA 54: Table 6.2.1(m)]
333	Table 1315.2(13) — Semi-Rigid Copper Tubing [NFPA 54: Table 6.2.1(n)]
334	Table 1315.2(14) — Corrugated Stainless Steel Tubing (CSST) [NFPA 54: Table 6.2.1(o)]
335	Table 1315.2(15) — Corrugated Stainless Steel Tubing (CSST) [NFPA 54: Table 6.2.1(p)]
336	Table 1315.2(16) — Corrugated Stainless Steel Tubing (CSST) [NFPA 54: Table 6.2.1(q)]
337	Table 1315.2(17) — Corrugated Stainless Steel Tubing (CSST) [NFPA 54: Table 6.2.1(r)]
338	Table 1315.2(18) — Corrugated Stainless Steel Tubing (CSST) [NFPA 54: Table 6.2.1(s)]
339	Table 1315.2(19) — Polyethylene Plastic Pipe [NFPA 54: Table 6.2.1(t)]
340	Table 1315.2(20) — Polyethylene Plastic Pipe [NFPA 54: Table 6.2.1(u)]
341	Table 1315.2(21) — Polyethylene Plastic Pipe [NFPA 54: Table 6.2.1(v)]
342	Table 1315.2(22) — Polyethylene Plastic Tubing [NFPA 54: Table 6.2.1(w)] Table 1315.2(23) — Polyethylene Plastic Tubing [NFPA 54: Table 6.2.1(x)]
343	Table 1315.2(24) — Schedule 40 Metallic Pipe [NFPA 54: Table 6.3.1(a)]
344	Table 1315.2(25) — Schedule 40 Metallic Pipe [NFPA 54: Table 6.3.1(b)]
345	Table 1315.2(26) — Schedule 40 Metallic Pipe [NFPA 54: Table 6.3.1(c)]
346	Table 1315.2(27) — Schedule 40 Metallic Pipe [NFPA 54: Table 6.3.1(d)]
347	Table 1315.2(28) — Semi-Rigid Copper Tubing [NFPA 54: Table 6.3.1(e)]
348	Table 1315.2(29) — Semi-Rigid Copper Tubing [NFPA 54: Table 6.3.1(f)]
349	Table 1315.2(30) — Semi-Rigid Copper Tubing [NFPA 54: Table 6.3.1(g)]
350	Table 1315.2(31) — Corrugated Stainless Steel Tubing (CSST) [NFPA 54: Table 6.3.1(h)]
351	Table 1315.2(32) — Corrugated Stainless Steel Tubing (CSST) [NFPA 54: Table 6.3.1(i)]
352	Table 1315.2(33) — Corrugated Stainless Steel Tubing (CSST) [NFPA 54: Table 6.3.1(j)]
353	Table 1315.2(34) — Polyethylene Plastic Pipe [NFPA 54: Table 6.3.1(k)]
354	Table 1315.2(35) — Polyethylene Plastic Pipe [NFPA 54: Table 6.3.1(l)]
355	Table 1315.2(36) — Polyethylene Plastic Tubing [NFPA 54: Table 6.3.1(m)]
356	Chapter 14 — Process Piping
358	1401.0 — General. 1401.1 — Applicability. 1402.0 — Permit. 1402.1 — General. 1403.0 — Plans Required. 1403.1 — General. 1404.0 — Workmanship. 1404.1 — General. 1405.0 — Inspections. 1405.1 — General. 1405.2 — Required Inspections. 1405.2.1 — Rough Piping Inspection. 1405.2.2 — Final Piping Inspection. 1405.3 — Other Inspections. 1406.0 — Pipe, Tubing, and Fittings. 1406.1 — General. 1406.2 — Hazardous Process Piping (HPP). 1406.2.1 — Installation in Exit Corridors and Above Other Occupancies.
359	1406.2.1.1 — Automatic Sprinklers. 1406.2.1.2 — Ventilation. 1406.2.1.3 — Receptor. 1406.2.1.4 — Separation. 1406.2.1.5 — Emergency Shutoff Valves. 1406.2.1.6 — Electrical Wiring. 1406.3 — Special Requirements for HPP Gases. 1406.3.1 — Special Provisions. 1406.3.2 — Piping and Tubing Installation. 1406.3.3 — Gas-Detection System.
360	Chapter 15 — Solar Energy Systems
362	1501.0 — General. 1501.1 — Applicability. 1502.0 — General. [HCD 1 & HCD 2]
364	Chapter 16 — Stationary Power Plants
366	1601.0 — Stationary Fuel Cell Power Plants. 1601.1 — General. 1602.0 — Stationary Gas Engines and Generators. 1602.1 — General. 1602.2 — Connection to the Gas Supply Piping. 1602.3 — Stationary Engine Generators.
368	Chapter 17 — Referenced Standards
370	1701.0 — General. 1701.1 — Standards. Table Table 1701.1 — Referenced Standards
383	Table 1701.2 — Standards, Publications, Practices, and Guides
388	Abbreviations in Table 1701.1 and Table 1701.2
390	Appendices — Table of Contents
392	Appendix A — Residential Plan Examiner Review Form for HVAC System Design
394	Residential Plan Examiner Review Form for HVAC System Design (Loads, Equipment, Ducts) [ACCA]
396	Appendix B — Procedures to be Followed to Place Gas Equipment in Operation
398	B 101.0 — Adjusting the Burner Input. B 101.1 — Adjusting Input. B 101.2 — High Altitude. B 102.0 — Primary Air Adjustment. B 102.1 — General. B 103.0 — Safety Shutoff Devices. B 103.1 — General. B 104.0 — Automatic Ignition. B 104.1 — General. B 105.0 — Protective Devices. B 105.1 — General. B 106.0 — Checking the Draft. B 106.1 — General. B 107.0 — Operating Instructions. B 107.1 — General.
400	Appendix C — Installation and Testing of Oil (Liquid) Fuel-Fired Equipment
402	C 101.0 — General. C 101.1 — Applicability. C 102.0 — Definitions.
403	C 103.0 — Standards and Accepted Practices. C 103.1 — General. C 104.0 — Approval of Equipment. C 104.1 — General. C 105.0 — Placing Equipment in Operation. C 105.1 — General. C 106.0 — Pilot Operation. C 106.1 — General. C 107.0 — Burner Operation. C 107.1 — General. C 108.0 — Method of Test. C 108.1 — General Test Methods.
405	C 109.0 — Special Requirements Based on Btu/h Input. C 109.1 — General.
408	Appendix D — Fuel Supply: Manufactured/Mobile Home Parks and Recreational Vehicle Parks
410	D 101.0 — Fuel Gas Piping Systems. D 101.1 — General. D 101.2 — Gas Supply Connections. D 101.3 — Location of Gas Supply Connection. D 101.4 — Recreational Vehicle Park Fuel-Gas Equipmentand Installations. D 102.0 — Single and Multiple Manufactured Home Site Fuel Supply Systems. D 102.1 — Underground Installation. D 102.1.1 — Open-Ended Gastight Conduit. D 102.1.2 — Requirements. D 103.0 — Manufactured Home Site Gas Shutoff Valve. D 103.1 — General. D 104.0 — Gas Meters. D 104.1 — Support of Meters. D 104.2 — Location of Meters. D 104.3 — Meter Shutoff Valve or Cock.
411	D 105.0 — Cathodic Protection Requirements. D 105.1 — General. D 106.0 — Manufactured Home Community LP-Gas Supply Systems. D 106.1 — General. D 107.0 — Required Gas Supply. D 107.1 — General. D 108.0 — Gas Pipe Sizing and Pressure. D 108.1 — Size. D 108.2 — Pressure. D 109.0 — Gas Piping Materials. D 109.1 — Metal. D 109.2 — Protection Coatings for Metal Gas Piping. D 109.3 — Plastic. D 110.0 — Gas Piping Installations. D 110.1 — Minimum Burial Below Ground Level and Clearances. D 110.2 — Metallic Gas Piping. Tables Table D 107.1 — Demand Factors for Use in Calculating Gas Piping Systems in Manufactured Home Communities [NFPA 501A: TABLE 4.3.4.1]
412	D 110.2.1 — Cathodic Protection. D 110.2.2 — Underground Metallic Systems. D 110.3 — Plastic Gas Piping. D 110.4 — Gas Piping System Shutoff Valve. D 111.0 — Liquefied Petroleum Gas Appliances. D 111.1 — General. D 112.0 — Oil Supply. D 112.1 — General. D 112.2 — Minimum Oil Supply Tank Size. D 112.3 — Oil Supply Connections. D 113.0 — Fuel Supply Systems Installation. D 113.1 — Flexible Gas Connector.
413	D 113.2 — Use of Approved Pipe and Fittings of Extension. D 113.3 — Mechanical Protection. D 113.4 — Special Rules on Atmospherically Controlled Regulators. D 113.5 — Fuel Gas Piping Test. D 113.5.1 — Procedures. D 113.5.2 — Warning. D 113.5.3 — Vents. D 113.6 — Oil Tanks. D 113.6.1 — Installation. D 113.6.2 — Capacity. D 113.6.3 — Location. D 113.6.4 — Vent. D 113.6.5 — Liquid Level. D 113.6.6 — Fill Opening. D 114.0 — Manufactured Home Accessory Building Fuel Supply Systems. D 114.1 — General.
414	D 115.0 — Community Building Fuel Supply Systems in Manufactured Home Communities. D 115.1 — Fuel Gas Piping and Equipment Installations. D 115.2 — Oil Supply Systems in Manufactured Home Communities. D 115.3 — Oil-Burning Equipment and Installation. D 115.4 — Inspection and Tests.
416	Appendix E — Sustainable Practices
418	E 101.0 — General. E 101.1 — Applicability. E 101.2 — Definition of Terms. E 201.0 — Definitions. E 201.1 — Cycles of Concentration for Cooling Towers. E 201.2 — Duct Wall Penetrations. E 201.3 — Energy Star. E 201.4 — Geothermal. E 201.5 — Heating Seasonal Performance Factor (HSPF). E 201.6 — Integrated Energy Efficiency Ratio (IEER). E 201.7 — Integrated Part-Load Value (IPLV). E 201.8 — Joint, Transverse. E 201.9 — Maintenance. E 201.10 — Minimum Efficiency Reporting Value (MERV). E 201.11 — Multi-Occupant Spaces. E 201.12 — Recirculation System. E 201.13 — Seam, Longitudinal. E 201.14 — Seasonal Energy Efficiency Ratio (SEER). E 301.0 — General Regulations. E 301.1 — Installation. E 301.2 — Qualifications. E 302.0 — Disposal of Liquid Waste. E 302.1 — Disposal. E 302.2 — Connections to Plumbing System Required.
419	E 303.0 — Abandonment. E 303.1 — General. E 401.0 — Water Conservation and Efficiency. E 401.1 — General. E 402.0 — Meters. E 402.1 — Required. E 402.2 — Consumption Data. E 402.3 — Access. E 403.0 — HVAC Water Use. E 403.1 — Once-Through Cooling. E 403.2 — Cooling Towers and Evaporative Coolers. E 403.3 — Cooling Tower Makeup Water. E 403.4 — Evaporative Cooler Water Use. E 403.4.1 — Overflow Alarm. E 403.4.2 — Automatic Pump Shut-Off. E 403.4.3 — Cooler Reservoir Discharge. E 403.4.4 — Discharge Water Reuse. E 403.4.5 — Discharge Water to Drain. E 403.5 — Use of Reclaimed (Recycled) and Onsite Treated Nonpotable Water for Cooling.
420	E 403.5.1 — Drift Eliminator. E 403.5.2 — Disinfection. E 501.0 — Heating, Ventilation, and Air-Conditioning Systems and Equipment – Energy Efficiency. E 501.1 — Scope. E 502.0 — Heating, Ventilation, and Air-Conditioning Low-Rise Residential Buildings. E 502.1 — General. E 502.2 — Heating, Ventilating, and Air-Conditioning Systems and Equipment. E 502.2.1 — Nonresidential Type Systems and Equipment. E 502.3 — Balancing. E 502.3.1 — Balancing Dampers. E 502.4 — Ducts. E 502.4.1 — Insulation for Ducts. E 502.4.2 — Ducts and Register Penetrations. E 502.4.3 — Duct Leakage Test. E 502.4.3.1 — Duct Leakage Verification Test. E 502.4.4 — Duct Sizing. E 502.5 — Insulation for Piping. E 502.6 — Ventilation and Combustion Air. E 502.6.1 — Combustion Air.
421	E 502.7 — Electric Heating Systems E 502.7.1 — Wall, Floor, or Ceiling Electric-Resistance Heating. E 502.7.2 — Electric Central Warm Air Heating. Tables Table E 502.5 — Minimum Pipe Insulation Thickness [ASHRAE 90.2: Table 6.5] Table E 502.6 — Ventilation Air [ASHRAE 90.2: Table 6.6.1]
422	E 502.8 — Bath Ceiling Units. E 502.9 — HVAC Equipment, Rated Combinations. E 502.10 — Controls. E 502.10.1 — Initial Control Setting. E 502.10.2 — Ventilation Control. E 502.10.3 — Humidity Control. E 502.10.3.1 — Cooling. E 502.10.4 — Freeze Protection Systems. E 502.10.5 — Other Controls. E 502.11 — Whole House Fans. E 502.12 — Dampers. Table E 502.9 — Minimum Requirements for Non-Federally Covered HVAC Equipment [ASHRAE 90.2: Table 6.9]
423	E 503.0 — Heating, Ventilation, and Air-Conditioning – Other than Low-Rise Residential Buildings. E 503.1 — General. E 503.1.1 — New Buildings. E 503.1.2 — Additions to Existing Buildings. E 503.1.3 — Alterations to Heating, Ventilating, Air-Conditioning, and Refrigeration in Existing Buildings. E 503.1.3.1 — New Cooling Systems. E 503.1.3.2 — Existing Cooling Systems. E 503.1.3.3 — Ductwork. E 503.1.3.4 — Piping. E 503.2 — Compliance Path(s). E 503.2.1 — Projects Using Energy Cost Budget Method. E 503.3 — Simplified Approach Option for HVAC Systems. E 503.3.1 — Criteria.
424	E 503.3.2 — Climate Zone Determination.
425	E 503.4 — Mandatory Provisions. E 503.4.1 — Water-Cooled Centrifugal Chilling Packages.
426	E 503.4.1.1 — Positive Displacement (air- and water-cooled) Chilling Packages. E 503.4.2 — Equipment not Listed. E 503.4.3 — Verification of Equipment Efficiencies. E 503.4.4 — Labeling. E 503.4.4.1 — Packaged Terminal Air Conditioners. E 503.4.5 — Load Calculations. E 503.4.5.1 — Pump Head. E 503.4.6 — Zone Thermostatic Controls.
427	E 503.4.6.1 — Dead Band. E 503.4.6.2 — Setpoint Overlap Restriction. E 503.4.6.3 — Off-Hour Controls. E 503.4.6.3.1 — Automatic Shutdown. E 503.4.6.3.2 — Setback Controls. E 503.4.6.3.3 — Optimum Start Controls. E 503.4.6.3.4 — Zone Isolation.
428	E 503.4.6.3.5 — Automatic Control of HVAC in Hotel/Motel Guest Rooms. E 503.4.6.3.5.1 — Guest Room HVAC Set-Point Control. E 503.4.6.4 — Ventilation System Controls. E 503.4.6.4.1 — Shutoff Damper Controls. Table E 503.4.6.4.2 — Maximum Damper Leakage (cubic foot per minute per square foot) at 1.0 in. w.g [ASHRAE 90.1: Table 6.4.3.4.3]
429	E 503.4.6.4.2 — Dampers Leakage. E 503.4.6.4.3 — Ventilation Fan Controls. E 503.4.6.5 — Enclosed Parking Garage Ventilation. E 503.4.6.6 — Heat Pump Auxiliary Heat Control. E 503.4.6.7 — Humidification and Dehumidification. E 503.4.6.8 — Freeze Protection and Snow or Ice Melting Systems. E 503.4.6.9 — Ventilation Controls for High-Occupancy Areas.
430	E 503.4.6.10 — Outdoor Heating. E 503.4.6.11 — Heated or Cooled Vestibules. E 503.4.6.12 — Direct Digital Control (DDC) Requirements. E 503.4.6.12.1 — DDC Applications. E 503.4.6.12.2 — DDC Controls. Table E 503.4.6.12.1 — DDC Applications and Qualifications [ASHRAE 90.1:6.4.3.10.1]
431	E 503.4.6.12.3 — DDC Display. E 503.4.6.13 — Economizer Fault Detection Diagnostics (FDD). E 503.4.7 — HVAC System Construction and Insulation. E 503.4.7.1 — Insulation. E 503.4.7.1.1 — Duct and Plenum Insulation. E 503.4.7.1.2 — Piping Insulation.
432	E 503.4.7.1.3 — Sensible Heating Panel. E 503.4.7.1.4 — Radiant Floor Heating. E 503.4.7.2 — Ductwork and Plenum Leakage. E 503.4.7.2.1 — Duct Leakage Tests. E 503.5 — Prescriptive Path, Economizers.
433	E 503.5.1 — Air Economizers, Design Capacity. E 503.5.1.1 — Control Signal. E 503.5.1.2 — High-Limit Shutoff. E 503.5.1.3 — Dampers. E 503.5.1.4 — Relief of Excess Outdoor Air. Table E 503.5(1) — Minimum Fan-Cooling Unit Size Where an Economizer is Required [ASHRAE 90.1: Table 6.5.1-1] Table E 503.5(2) — Eliminate Required Economizer for Comfort Cooling by Increasing Cooling Efficiency [ASHRAE 90.1: Table 6.5.1-2]
434	E 503.5.1.5 — Sensor Accuracy. E 503.5.2 — Fluid Economizers, Design Capacity. Table E 503.5.1.2 — High-Limit Shutoff Control Settings for Air Economizers [ASHRAE 90.1: Table 6.5.1.1.3] Table E 503.5.2 — Water Economizer Sizing Dry-Bulb and Wet-Bulb Requirments for Computer Rooms [ASHRAE 90.1: Table 6.5.1.2.1]
435	E 503.5.2.1 — Maximum Hydronic Pressure Drop. E 503.5.3 — Integrated Economizer Control. E 503.5.4 — Economizer Heating System Impact. E 503.5.4.1 — Economizer Humidification System Impact. E 503.5.5 — Simultaneous Heating and Cooling Limitation, Zone Controls. Table E 503.5.3 — Dx Cooling Stage Requirements for Modulating Airflow Units [ASHRAE 90.1:6.5.1.3]
436	E 503.5.5.1 — Supply Air Temperature Reheat Limit. E 503.5.5.2 — Hydronic System Controls. E 503.5.5.2.1 — Three-Pipe System. E 503.5.5.2.2 — Two-Pipe Changeover System. E 503.5.5.2.3 — Hydronic (Water Loop) Heat Pump Systems.
437	E 503.5.5.3 — Dehumidification. E 503.5.5.4 — Humidifier Preheat. E 503.5.5.4.1 — Insulation. E 503.5.5.5 — Preheat Coils. E 503.5.6 — Air System Design and Control. E 503.5.6.1 — Fan System Power and Efficiency. Table E 503.5.6.1(1) — Fan Power Limitation [ASHRAE 90.1: Table 6.5.3.1-1]
438	E 503.5.6.1.1 — Motor Nameplate Horsepower. E 503.5.6.1.2 — Fan Efficiency. Table E 503.5.6.1(2) — Fan Power Limitation Pressure Drop Admustment [ASHRAE 90.1: Table 6.5.3.1-2]
439	E 503.5.6.2 — Supply Fan Airflow Control. E 503.5.6.2.1 — VAV Static Pressure Sensor Location. E 503.5.6.2.2 — VAV Setpoint Reset. E 503.5.6.3 — Multiple-Zone VAV System Ventilation Optimization Control. Tale E 503.5.6.2 — Fan Airflow Control [ASHRAE 90.1: Table 6.5.3.2.1]
440	E 503.5.6.4 — Supply Air Temperature Reset Controls. E 503.5.6.5 — Fractional Horsepower Fan Motors. Table E 503.5.6.5(1) — Minimum Average Full-Load Efficiency for Polyphase Small Electric Motors [ASHRAE 90.1: Table 10.8-3] Table E 503.5.6.5(2) — Minimum Full-Load Efficiency for Capacitor-Start Capacitor-Run and Capacitor-Start Induction-Run Small Electric Motors [ASHRAE 90.1: Table 10.8-4]
441	E 503.5.6.6 — Ventilation Design. E 503.5.7 — Hydronic System Design and Control. E 503.5.7.1 — Hydronic Variable Flow Systems. E 503.5.7.2 — Chiller and Boiler Isolation. Table E 503.5.7 — Boiler Turndown [ASHRAE 90.1: Table 6.5.4.1] Table E 503.5.7.1 — Pump Flow Control Requirements [ASHRAE 90.1: Table 6.5.4.2] Table E 503.5.7.1 — Pump Flow Control Requirements [ASHRAE 90.1: Table 6.5.4.2]
442	E 503.5.7.2.1 — Boiler Isolation. E 503.5.7.3 — Chilled- and Hot-Water Temperature Reset Controls. E 503.5.7.4 — Hydronic (Water Loop) Heat Pump and Water-Cooled Unitary Air Conditioners. E 503.5.7.4.1 — Controls. E 503.5.7.5 — Pipe Sizing. E 503.5.7.4.1 — Controls. E 503.5.7.5 — Pipe Sizing. Table E 503.5.7.5 — Piping System Design Maximum Flow Rate (gallons per minute) [ASHRAE 90.1: Table 6.5.4.6]
443	E 503.5.8 — Heat Rejection Equipment. E 503.5.8.1 — Fan Speed Control. E 503.5.8.2 — Variable-Speed Fan Drives. E 503.5.9 — Limitation on Centrifugal Fan Open-Circuit Cooling Towers. E 503.5.9.1 — Tower Flow Turndown. E 503.5.10 — Exhaust Air Energy Recovery.
444	E 503.5.10.1 — Heat Recovery for Service Water Heating. E 503.5.10.1.1 — Condenser Heat Recovery Systems. E 503.5.10.1.2 — Capacity. E 503.5.11 — Exhaust Systems. E 503.5.11.1 — Transfer Air. Table E 503.5.10(1) — Exhaust Air Energy Recovery Requirements for Ventilation Systems Operating Less than 8000 Hours Per Year* [ASHRAE 90.1: Table 6.5.6.1-1] Table E 503.5.10(2) — Exhaust Air Energy Recovery Requirements for Ventilation Systems Operating Not Less than 8000 Hours Per Year* [ASHRAE 90.1: Table 6.5.6.1-2]
445	E 503.5.11.2 — Kitchen Exhaust Systems. E 503.5.11.2.1 — Exhaust Flow Rate. E 503.5.11.2.2 — Kitchen or Dining Facility. E 503.5.11.2.3 — Performance Testing. Table E 503.5.11.2.1 — Maximum Net Exhaust Flow Rate, CFM Per Linear Foot of Hood Length [ASHRAE 90.1: Table 6.5.7.2.2]
446	E 503.5.11.3 — Laboratory Exhaust Systems. E 503.5.12 — Radiant Heating Systems. E 503.5.12.1 — Heating Enclosed Spaces. E 503.5.13 — Hot Gas Bypass Limitation. E 503.5.14 — Door Switches. E 503.6 — Submittals. E 503.6.1 — Construction Details. E 503.6.2 — Supplemental Information. Table E 503.5.13 — Hot Gas Bypass Limitation [ASHRAE 90.1: Table 6.5.9]
447	E 503.6.3 — Manuals. E 503.6.3.1 — Required Information. E 503.6.3.2 — Lighting Manuals. E 503.6.4 — Labeling of Material and Equipment. E 503.6.5 — Completion Requirements. E 503.6.5.1 — Drawings. E 503.6.5.2 — Manuals. E 503.6.5.3 — System Balancing. E 503.6.5.3.1 — Air System Balancing. E 503.6.5.3.2 — Hydronic System Balancing.
448	E 503.6.5.4 — System Commissioning. E 503.6.5.4.1 — Minimum Level of Commission. E 503.7 — Minimum Equipment Efficiency Tables. E 503.7.1 — Minimum Efficiency Requirement Listed Equipment – Standard Rating and Operating Conditions. E 503.7.2 — Duct Insulation Tables. E 503.7.3 — Pipe Insulation Tables. E 503.8 — Alternative Compliance Path. E 503.8.1 — Computer Room (PUE1). E 503.8.2 — Computer Room (PUE0). E 503.8.3 — Documentation. E 504.0 — Solar Energy Systems. E 504.1 — General. Table E 503.8.1 — Power Usage Effectiveness (PUE) Maximum [ASHRAE 90.1: Table 6.6.1]
449	Table E 503.7.1(1) — Electrically Operated Unitary Air Conditioners and Condensing Units Minimum Efficiency Requirements [ASHRAE 90.1: Table 6.8.1-1]
451	Table E 503.7.1(2) — Electrically Operated Unitary and Applied Heat Pumps Minimum Efficiency Requirements [ASHRAE 90.1: Table 6.8.1-2]
453	Table E 503.7.1(3) — Water-Chilling Packages – Minimum Efficiency Requirements [ASHRAE 90.1: Table 6.8.1-3]
454	Table E 503.7.1(4) — Electrically Operated Packaged Terminal Air Conditioners, Packaged Terminal Heat Pumps, Single-Package Vertical Air Conditioners, Single-Package Vertical Heat Pumps, Room Air Conditioners, and Room Air Conditioner Heat Pumps – Minimum Efficiency Requirements [ASHRAE 90.1: Table 6.8.1-4]
455	Table E 503.7.1(5) — Warm-Air Furnaces and Combination Warm-Air Furnaces/Air-Conditioning Units, Warm-Air Duct Furnaces, And Unit Heaters – Minimum Efficiency Requirements [ASHRAE 90.1: Table 6.8.1-5]
456	Table E 503.7.1(6) — Gas- And Oil-Fired Boilers – Minimum Efficiency Requirements [ASHRAE 90.1: Table 6.8.1-6]
457	Table E 503.7.1(7) — Performance Requirements For Heat Rejection Equipment Minimum Efficiency Requirements [ASHRAE 90.1: Table 6.8.1-7]
458	Table E 503.7.1(8) — Heat Transfer Equipment – Minimum Efficiency Requirements [ASHRAE 90.1: Table 6.8.1-8] Table E 503.7.1(9) — Electrically Operated Variable-Refrigerant-Flow Air Conditioners – Minimum Efficiency Requirements [ASHRAE 90.1: Table 6.8.1-9]
459	Table E 503.7.1(10) — Electrically Operated Variable-Refrigerant-Flow and Applied Heat Pumps – Minimum Efficiency Requirements [ASHRAE 90.1: Table 6.8.1-10]
461	Table E 503.7.1(11) — Air Conditioners and Condensing Units Serving Computer Rooms Minimum Efficiency Requirements [ASHRAE 90.1: Table 6.8.1-11]
462	Table E 503.7.1(12) — Commercial Refrigerator and Freezers – Minimum Efficiency Requirements [ASHRAE 90.1: Table 6.8.1-12]
463	Table E 503.7.1(13) — Commercial Refrigeration – Minimum Efficiency Requirements [ASHRAE 90.1: Table 6.8.1-13]
464	Table E 503.7.1(14) — Vapor Compression Based Indoor Pool Dehumidifiers – Minimum Efficiency Requirements [ASHRAE 90.1: Table 6.8.1-14] Table E 503.7.1(15) — Electrically Operated DX-DOAS Units, Single-Package And Remote Condenser, Without Energy Recovery – Minimum Efficiency Requirements [ASHRAE 90.1: Table 6.8.1-15] Table E 503.7.1(16) — Electrically Operated DX-DOAS Units, Single Package And Remote Condenser, With Energy Recovery – Minimum Efficiency Requirements [ASHRAE 90.1: Table 6.8.1-16]
465	Table E 503.7.2 — Minimum Duct Insulation R-Value [ASHRAE 90.1:Table 6.8.2] Table E 503.7.3(1) — Minimum Pipe Insulation Thickness for Heating and Hot Water Systems (Steam, Steam Condensate, Hot Water Heating, and Domestic Water Systems) [ASHRAE 90.1: Table 6.8.3-1]
466	E 601.0 — Indoor Environment. E 601.1 — Scope. E 602.0 — Fireplaces. E 602.1 — Requirements. E 602.1.1 — Masonry or Factory-Built Fireplace. E 602.1.1.1 — Opening Cover. E 602.1.1.2 — Combustion Air Intake. E 602.1.1.3 — Accessible Damper Control. E 602.1.2 — Prohibited. E 603.0 — Pollutant Control. E 603.1 — Indoor Air Quality During Construction. E 603.1.1 — Temporary Ventilation During Construction. Table E 503.7.3(2) — Minimum Pipe Insulation Thickness for Cooling Systems (Chilled Water, Brine, and Refrigerant) [ASHRAE 90.1: Table 6.8.3-2]
467	E 603.1.2 — Indoor Air Quality After Construction. E 603.1.3 — Covering of Duct Openings and Protection of Mechanical Equipment During Construction. E 603.2 — Isolation of Pollutant Sources. E 603.3 — Filters. E 603.4 — Ozone Depletion and Global Warming Reductions. E 604.0 — Indoor Moisture Control. E 604.1 — Rainwater Control. E 605.0 — Indoor Air Quality for Low-Rise Residential. E 605.1 — General. E 605.1.1 — Natural Ventilation. E 605.1.1.1 — Access to Operable Openings. E 605.1.2 — Mechanical Ventilation. E 605.1.3 — Dwelling-Unit Ventilation. E 605.1.3.1 — Total Ventilation Rate. E 605.1.3.2 — Effective Annual Average Infiltration Rate (Qinf).
468	E 605.1.3.3 — Required Mechanical Ventilation Rate (Qfan). E 605.1.3.4 — Different Occupant Density. E 605.1.4 — System Type. E 605.1.5 — Airflow Measurement. E 605.1.6 — Control and Operation. E 605.1.7 — Variable Mechanical Ventilation. E 605.1.7.1 — Short-Term Average Ventilation. E 605.1.7.2 — Scheduled Ventilation. E 605.1.7.2.1 — Annual Average Schedule. E 605.1.7.2.2 — Block Scheduling.
469	E 605.1.7.3 — Real-Time Control. E 605.1.8 — Equivalent Ventilation. E 605.2 — Bathroom Exhaust Fans. E 605.3 — Filters. E 606.0 — Indoor Air Quality for Other than Low-Rise Residential Buildings. E 606.1 — Minimum Indoor Air Quality. E 607.0 — Environmental Comfort. E 607.1 — Thermal Comfort Controls. E 607.2 — Heating and Air-Conditioning System Design. E 608.0 — Low VOC Solvent Cement and Primer. E 608.1 — General. E 608.1.1 — Solvent Cement. E 608.1.2 — Primer. Table E 605.1.3.1 — Ventilation Air Requirements, (cubic foot per minute) [ASHRAE 62.2: Table 4.1a]
470	E 701.0 — Installer Qualifications. E 701.1 — Scope. E 702.0 — Qualifications. E 702.1 — General. Part I E 801.0 — Heating, Ventilation, and Air Conditioning Systems Commissioning. E 801.1 — Applicability. E 802.0 — Commissioning. E 802.1 — Commissioning Requirements. E 802.2 — Owner’s Project Requirements (OPR). E 802.3 — Basis of Design (BOD). E 802.4 — Commissioning Plan. E 802.5 — Functional Performance Testing. E 802.6 — Post Construction Documentation and Training. E 802.6.1 — Systems Manual.
471	E 802.6.2 — Systems Operations Training. E 802.7 — Commissioning Report. Part II E 803.0 — Commissioning Acceptance. E 803.1 — General. E 803.2 — Construction Documents. E 803.2.1 — Roles and Responsibilities. E 803.2.1.1 — Field Technician. E 803.2.1.2 — Responsible Person. E 803.2.1.3 — Certificate of Acceptance. E 804.0 — Commissioning Tests. E 804.1 — General. E 804.2 — Tests.
472	E 804.3 — Acceptance Process. E 804.3.1 — Plan Review. E 804.3.2 — Construction Inspection. E 804.3.3 — Acceptance Testing. E 804.3.4 — Certificate of Occupancy. E 805.0 — HVAC System Tests. E 805.1 — Variable Air Volume Systems (Form MECH-2A). E 805.1.1 — Test Procedure. E 805.1.1.1 — Construction Inspection. E 805.1.1.2 — Functional Testing.
473	E 805.1.2 — Acceptance Criteria. E 805.2 — Constant Volume Systems (Form MECH-2A). E 805.2.1 — Test Procedure. E 805.2.1.1 — Construction Inspection. E 805.2.1.2 — Functional Testing. E 805.2.2 — Acceptance Criteria. E 805.3 — Constant Volume, Single-Zone, Unitary Air Conditioner and Heat Pumps Systems Acceptance (Form MECH-3A). E 805.3.1 — Test Procedure. E 805.3.1.1 — Construction Inspection. E 805.3.1.2 — Functional Testing.
474	E 805.3.2 — Acceptance Criteria. E 805.4 — Air Distribution Systems (Form MECH-4A). E 805.4.1 — Test Procedure. E 805.4.1.1 — Construction Inspection. E 805.4.1.2 — Functional Testing. E 805.4.2 — Acceptance Criteria. E 805.5 — Air Economizer Controls Acceptance (Form MECH-5A). E 805.5.1 — Test Procedure. E 805.5.1.1 — Construction Inspection.
475	E 805.5.1.2 — Functional Testing. E 805.5.2 — Acceptance Criteria. E 805.6 — Demand-Controlled Ventilation Systems Acceptance (Form MECH-6A). E 805.6.1 — Test Procedure. E 805.6.1.1 — Construction Inspection. E 805.6.1.2 — Functional Testing.
476	E 805.6.2 — Acceptance Criteria. E 805.7 — Supply Fan Variable Flow Controls (Form MECH-7A). E 805.7.1 — Test Procedure. E 805.7.1.1 — Construction Inspection. E 805.7.1.2 — Functional Testing. E 805.7.2 — Acceptance Criteria.
477	E 805.8 — Valve Leakage (Form MECH-8A). E 805.8.1 — Test Procedure. E 805.8.1.1 — Construction Inspection. E 805.8.1.2 — Functional Testing. E 805.8.2 — Acceptance Criteria. E 805.9 — Supply Water Temperature Reset Controls (Form MECH-9A). E 805.9.1 — Test Procedure. E 805.9.1.1 — Construction Inspection. E 805.9.1.2 — Functional Testing. E 805.9.2 — Acceptance Criteria. E 805.10 — Hydronic System Variable Flow Controls (Form MECH-10A).
478	E 805.10.1 — Test Procedure. E 805.10.1.1 — Construction Inspection. E 805.10.1.2 — Functional Testing. E 805.10.2 — Acceptance Criteria. E 805.11 — Automatic Demand Shed Control (Form MECH-11A). E 805.11.1 — Test Procedure. E 805.11.1.1 — Construction Inspection. E 805.11.1.2 — Functional Testing. E 805.11.2 — Acceptance Criteria. E 805.12 — Fault Detection and Diagnostics (FDD) for Packaged Direct-Expansion (DX) Units (Form MECH-12A). E 805.12.1 — Test Procedure. E 805.12.1.1 — Construction Inspection.
479	E 805.12.1.2 — Functional Testing. E 805.12.2 — Acceptance Criteria. E 805.13 — Automatic Fault Detection Diagnostics (FDD) for Air Handling Units (AHU) and Zone Terminal Units (Form MECH-13A). E 805.13.1 — Test Procedure. E 805.13.1.1 — Functional Testing. E 805.13.1.1.1 — Functional Testing for Air Handling Units.
480	E 805.13.1.1.2 — Functional Testing for Zone Terminal Units. E 805.13.2 — Acceptance Criteria. E 805.14 — Distributed Energy Storage DX AC System (Form MECH-14A).
481	E 805.14.1 — Test Procedure. E 805.14.1.1 — Construction Inspection. E 805.14.1.2 — Functional Testing. E 805.14.1.3 — Calibrating Controls. E 805.14.2 — Acceptance Criteria. E 805.15 — Thermal Energy Storage (TES) System (Form MECH-15A). E 805.15.1 — Test Procedure. E 805.15.1.1 — Construction Inspection.
482	E 805.15.1.2 — Functional Testing. E 805.15.2 — Acceptance Criteria.
483	E 806.0 — Certificate of Acceptance Forms. E 806.1 — General.
484	FORMS MECH-2A
487	MECH-3A
490	MECH-4A
493	MECH-5A
496	MECH-6A
499	MECH-7A
501	MECH-8A
503	MECH-9A
505	MECH-10A
508	MECH-11A
510	MECH-12A
513	MECH-13A
517	MECH-14A
520	MECH-15A
524	Appendix F — Geothermal Energy Systems
526	Part I – General. F 101.0 — General. F 101.1 — Applicability. F 101.1.1 — Prior to Construction. F 101.1.2 — Equipment, Accessories, Components, and Materials. F 101.2 — Construction Documents. F 101.3 — Site Survey. F 101.4 — Used Materials. F 101.5 — Contact with Building Material. F 101.6 — Strains and Stresses. F 101.7 — Flood Hazard. F 101.8 — Pipe Support. F 101.9 — Velocities. F 101.10 — Chemical Compatibility. F 101.11 — Transfer Fluid. F 102.0 — Definitions. F 103.0 — Groundwater Systems. F 103.1 — General.
527	F 104.0 — Design of Systems. F 104.1 — Ground-Heat Exchanger Design. F 104.2 — Piping and Tubing Materials Standards. F 104.3 — Fittings. F 104.4 — Underground Piping and Submerged Materials. F 104.4.1 — Polyethylene (PE). F 104.4.1.1 — Joining Methods for Polyethylene Pipe or Tubing. F 104.4.2 — Cross-Linked Polyethylene (PEX). F 104.4.2.1 — Joining Methods for Cross-Linked Polyethylene Tubing. F 104.5 — Indoor Piping. F 105.0 — Heat Pumps. F 105.1 — Heat Pump Distribution System. Tables Table F 104.2 — Plastic Ground Source Loop Piping Table F 104.3 — Ground Source Loop Fittings
528	F 105.2 — Circulating Pumps. F 106.0 — Valves. F 106.1 — Where Required. F 106.2 — Heat Exchangers. F 106.3 — Central Systems. F 106.4 — Pressure Vessels. F 106.5 — Pressure-Reducing Valves. F 106.6 — Equipment and Appliances. F 106.7 — Expansion Tanks. F 106.8 — Reduced Pressure. F 107.0 — Specific System Components Design. F 107.1 — General. F 107.2 — Heat Exchangers. F 107.3 — Heat-Transfer Medium. F 107.4 — Insulation. F 108.0 — Installation Practices. F 108.1 — Prior to Construction. F 108.2 — Equipment, Accessories, Components, and Materials. F 108.3 — Construction Documents. F 108.4 — Site Survey Requirements.
529	F 108.5 — Subsurface Investigation. F 108.6 — Subsurface Conditions. F 108.7 — Ground-Heat Exchanger Installation Practices. F 108.8 — Trenching, Excavation, and Backfill. F 108.9 — Trenches, Tunneling, and Driving. F 108.10 — Excavations and Open Trenches. F 108.11 — Protection of Piping, Materials, and Structures. F 108.12 — Sleeves. F 108.13 — Steel Nail Plates. F 108.14 — Exterior Piping Protection. F 108.15 — Heat Pump and Distribution System Installation. F 108.16 — Pressurizing During Installation.
530	F 108.17 — Horizontal Geothermal Piping – Materials and Methods. F 108.17.1 — Piping Material. F 108.17.2 — Dissimilar Materials. F 108.17.3 — Protection of Piping. F 108.18 — Trenches, Excavation, and Backfill. F 108.18.1 — Trenches. F 108.18.2 — Buried Systems. F 108.18.3 — Pipe Installation. F 108.18.4 — Separation. F 108.18.5 — Insulation. F 108.18.6 — Pipe Bends. F 108.18.7 — Closed Cell Insulation. F 108.18.8 — Tracer Markings. F 109.0 — System Start-Up. F 109.1 — General. F 109.2 — Operation and Maintenance Manual. F 109.3 — Labeling and Marking.
531	F 109.4 — Documentation. F 109.5 — Maintenance. F 109.6 — Records. F 109.7 — System Start-Up. F 109.8 — Contaminants. F 110.0 — Decommissioning and Abandonment. F 110.1 — General. Part II – Closed-Loop Systems. F 201.0 — General. F 201.1 — Applicability. F 201.2 — Piping and Tubing. F 201.3 — Borehole Piping and Tubing. F 201.4 — Underground Fittings. F 201.5 — Verification. F 201.6 — Vertical Bores. F 201.6.1 — Backfill. F 201.6.2 — U-Bends and Headers. F 201.6.2.1 — Test Pressure. F 201.6.2.2 — Testing Procedure. F 201.6.2.3 — Calculation of Static Pressure (Water). F 201.6.2.4 — Calculation of Static Pressure (Other Fluids).
532	F 202.0 — Ground-Heat Exchanger Testing. F 202.1 — Testing. F 202.2 — Individual Loop Pressure Testing. F 202.3 — Field Pressure Testing – Final. F 202.4 — Field Flow Testing – Final. Part III – Open-Loop Systems. F 301.0 — General. F 301.1 — Applicability. F 301.2 — Test Wells. F 301.3 — Installation of Water Wells. F 301.4 — Setbacks. F 302.0 — Open Ground Water Systems. F 302.1 — General. F 302.2 — Open-Loop Water Well Drilling Logs. F 302.3 — Design Considerations.
533	F 302.4 — Water Wells and Injection Wells. F 302.5 — Testing and Sampling. F 302.6 — Disinfection. F 303.0 — Testing and Verification. F 303.1 — Pumping Test. F 303.2 — Retesting. F 303.3 — Variable Rate Pump Test. F 303.4 — Constant Rate Pump Test. F 303.5 — Water Level Monitoring. F 303.6 — Injection Wells. F 303.7 — Re-Injected Water. Part IV – Direct Exchange (DX) Systems. F 401.0 — Direct Exchange (DX) Systems. F 401.1 — General. F 401.2 — Applicability. F 401.3 — DX Systems. F 401.4 — DX System Testing. F 401.5 — Indoor Piping. F 401.6 — On Site Storage. F 401.7 — System Start-Up.
534	F 401.8 — DX Piping.
536	Appendix G — Sizing of Venting Systems and Outdoor Combustion and Ventilation Opening Design
538	G 101.0 — General. G 101.1 — Applicability. G 101.2 — Examples Using Single Appliance Venting Tables. Figures Figure G 101.2(1) — Type B Double-Wall Vent System Serving a Single Applicance with a Type B Double-Wall Vent Figure G 101.2(2) — Type B Double-Wall Vent System Serving a Single Appliance with a Single-Wall Metal Vent Connector Figure G 101.2(3) — Vent System Serving a Single Appliance with a Masonry Chimney and a Type B Double-Wall Vent Connector Figure G 101.2(4) — Vent System Serving a Single Appliance Using a Masonry Chimney and a Single-Wall Metal Vent Connector
539	Figure G 101.2(5) — Asbestos Cement Type B or Single-Wall Metal Vent System Serving a Single Draft Hood-Equipped Appliance Figure G 101.2(6) — Vent System Serving Two or More Appliances with Type B Double-Wall Vent and Type B Double-Wall Vent Connectors Figure G 101.2(7) — Vent System Serving Two or More Appliances with Type B Double-Wall Vent and Single-Wall Metal Vent Connectors Figure G 101.2(8) — Masonry Chimney Serving Two or More Appliances with Type B Double-Wall Vent Connectors
540	Figure G 101.2(9) — Masonry Chimney Serving Two or More Appliances with Single-Wall Metal Vent Connectors Figure G 101.2(10) — Asbestos Cement Type B or Single-Wall Metal Vent System Serving Two or More Draft Hood-Equipped Appliances Figure G 101.2(11) — Use of Manifolded Common Vent Connector Figure G 101.2(12) — Use of Offset Common Vent
541	G 101.3 — Example 1: Single Draft Hood-Equipped Appliance. Figure G 101.2(13) — Multistory Gas Vent Design Procedure for Each Segment of System Figure G 101.2(14) — Principles of Design of Multistory Vents Using Vent Connector and Common Vent Design Talbes [See Section 803.2.13 through Section 803.2.16]
542	G 101.4 — Example 2: Single Fan-Assisted Appliance. G 101.5 — Example 3: Interpolating Between Table Values. Figure G 101.3 — Single Draft Hood-Equipped Appliance – Example 1 Figure G 101.4 — Single Fan-Assisted Appliance – Example 2
543	G 102.0 — Examples Using Common Venting Tables. G 102.1 — Example 4: Common Venting Two Draft Hood-Equipped Appliances. G 102.2 — Example 5(a): Common Venting a Draft Hood-Equipped Water Heater with a Fan-Assisted Furnace into a Type B Vent. Figure G 102.1 — Common Venting Two Draft Hood-Equipped Appliances – Example 4
544	G 102.3 — Example 5(b): Common Venting into an Interior Masonry Chimney. G 102.4 — Example 5(c): Common Venting into an Exterior Masonry Chimney. Figure G 102.2 — Common Venting a Draft Hood-Equipped Water Heater with a Fan-Assisted Furnace Into a Type B Double-Wall Common Vent – Example 5(a)
545	Tables Table G 102.3 — Masonry Chimney Liner Dimensions with Circular Equivalents*
546	G 103.0 — Example of Combination Indoor and Outdoor Combustion Air Opening Design.
547	Table G 103.0 — Standard Method: Required Volume, All Appliances
548	Appendix H — Example Calculation of Outdoor Air Rate
550	H 101.0 — Example Calculation of Outdoor Air Rate. H 101.1 — Example Calculation.
552	Useful Tables Unit Conversions
556	Sl Symbols and Prefixes
558	Approximate Minimum Thickness for Carbon Sheet Steel Corresponding to Manufacturer’s Standard Gauge and Galvanized Sheet Gauge Numbers
560	Index – A –
561	– B –
562	– C –
564	– D –
565	– E –
566	– F –
567	– G –
568	– H –
569	– I –
570	– J – – K – – L – – M –
571	– N – – O – – P –
573	– R –
574	– S –
575	– T – – U – – V –
576	– W – – Z –
578	History Note
580	License Agreement

Published By	Publication Date	Number of Pages
CA	2022	581


PDF Format	Searchable	Printable	Preview Now

Standard Title	California Mechanical Code, Title 24, Part 4 (W/ SUPPLEMENT)
Published Code	CA
Publication Date	2022
Pages Count	581

CA MechanicalCode 2022

PDF Catalog

Related products

CA MechanicalCode 2022

CA LosAngelesCity MechanicalCode 2020

CA LosAngelesCounty MechanicalCode 2020

CA MechanicalCode 2022