The 2015 edition of the Uniform Mechanical Code (UMC©) represents the most current approaches in the mechanical field. It is the fifth edition developed under the ANSI Consensus process is designated as an American National Standards by the American National Standards Institute (ANSI). Contributions to the content of this code were made by every segment of the built industry, including such diverse interests as consumers, enforcing authorities, installers/maintainers, labor, manufacturers, research/standards/ testing laboratories, special experts and users. The UMC provides complete requirements for the installation and maintenance of heating, ventilating, cooling and refrigeration systems, while at the same time allowing latitude for innovations and new technologies. Click for additional information on e-Book downloads. Key changes to the 2012 UMC include: New general requirements for condensate wastes and control, installation of appliances on sloped roofs, and clearances to combustible constructions (Chapter 3) New ventilation provisions, such as the classification of recirculated and transferred air, parking garages exhaust, and natural ventilation (Chapter 4) New exhaust provisions for clothes dryers, Type I hoods and grease ducts, dishwashing machines, and downdraft appliances (Chapter 5) New duct systems requirements for factory-made air ducts, plastic ducts, and for ducts used in underground installations (Chapter 6) New appliances provisions, such as electric duct heaters, electric ranges, refrigeration appliances, and ductless mini-split systems (Chapter 9) New refrigeration system requirements, such as the refrigeration concentration limit, ventilation for refrigeration machinery rooms, pressure vessels, and pressure relief valve discharge (Chapter 11) New hydronic systems provisions (Chapter 12)

PDF Catalog

PDF Pages	PDF Title
2	Preface
4	Important Notices and Disclaimers Updating IAPMO Codes
5	Foreword Origin and Development
6	Adoption Revision Markings
7	Format of the Uniform Mechanical Code
12	Sample Legislation for Adoption of the Uniform Mechanical Code
13	Committee on Uniform Mechanical Code
14	Section Relocation
20	Table of Contents Chapter 1 Administration Chapter 2 Definitions Chapter 3 General Regulations Table of Contents
21	Chapter 4 Ventilation Air
22	Chapter 5 Exhaust Systems
24	Chapter 6 Duct Systems Chapter 7 Combustion Air
25	Chapter 8 Chimneys and Vents Chapter 9 Installation of Specific Appliances
28	Chapter 10 Boilers and Pressure Vessels
29	Chapter 11 Refrigeration
31	Chapter 12 Hydronics
33	Chapter 13 Fuel Gas Piping
35	Chapter 14 Process Piping Chapter 15 Soalr Energy Systems Chapter 16 Stationary Power Plants Chapter 17 Referenced Standards Appendices Table of Contents Appendix A Residential Plan 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/MobileHome Parks and Recreational Vehicle Parks Appendix E Sustainable Practices Appendix F Sizing of Venting Systems and Outdoor Combustion and Ventilation Opening Design Appendix G Example Calculation of Outdoor Air Rate Index
36	Chapter 1 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.
37	102.8 Appendices. 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.
38	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.
39	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. 105.2.2 Other Inspections. 105.2.3 Inspection Requests.
40	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. 106.3 Penalties. 106.4 Stop Orders.
41	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.
44	Chapter 2 Definitions 201.0 General. 201.1 Applicability. 202.0 Definition of Terms. 202.1 General. 203.0 – A –
45	204.0 – B – 205.0 – C –
47	206.0 – D –
48	207.0 – E – 208.0 – F –
49	209.0 – G –
50	210.0 – H – 211.0 – I –
51	212.0 – J – 213.0 – K – 214.0 – L –
52	215.0 – M – 216.0 – N – 217.0 – O – 218.0 – P –
53	219.0 – Q – 220.0 – R –
54	221.0 – S –
55	222.0 – T – 223.0 – U –
56	224.0 – V – 225.0 – W – 226.0 – X – 227.0 – Y – 228.0 – Z –
58	Chapter 3 General Regulations 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. 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. TABLES FIGURES
59	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. 303.3 Unlisted Appliances. 303.4 Anchorage of Appliances. 303.5 Movement. 303.6 Identification of Equipment. 303.7 Liquefied Petroleum Gas Facilities.
60	303.8 Equipment and Appliances on Roofs. 303.8.1 Load Capacity. 303.8.2 Fasteners. 303.8.3 Installation of Equipment and Appliances on Roofs. 303.8.4 Clearance. 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. 304.0 Accessibility for Service. 304.1 General. 304.2 Sloped Roof. 304.3 Access to Equipment and Appliances on Roofs. 304.3.1 Access. 304.3.1.1 Access Type.
61	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. 305.0 Location. 305.1 Installation in Garages. 305.1.1 Physical Damage. 305.1.2 Access from the Outside. 305.1.3 Cellulose Nitrate Plastic Storage. 305.2 Flood Hazard Areas. 305.2.1 Coastal High Hazard Areas. 305.2.2 Air Exhaust and Intake Openings. 305.3 Elevator Shaft. 305.4 Drainage Pan.
62	306.0 Automatic Control Devices. 306.1 General. 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.
63	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. 310.1.1 Condensate Pumps. 310.2 Condensate Control. 310.2.1 Protection of Appurtenances. 310.3 Condensate Waste Pipe Material and Sizing. Table 310.3 Minimum Condensate Pipe Size
64	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. 311.2 Air Filters. 311.3 Prohibited Source. 311.4 Return-Air Limitations. 312.0 Plumbing Connections. 312.1 General. 313.0 Hangers and Supports. 313.1 General. 313.2 Material. 313.3 Suspended Piping.
65	313.4 Alignment. 313.5 Underground Installation. 313.6 Hanger Rod Sizes. 313.7 Gas Piping. 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. Table 313.6 Hanger Rod Sizes
66	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. 317.3 Open Trenches. 317.4 Excavations.
67	Table 303.10.1 Reduction of Clearances with Specified Forms of Protection
68	Figure 303.10.1(1) Extent of Protection Necessary to Reduce Clearances from Gas Appliances or Vent Connectors Figure 303.10.1(2) Wall Protector Clearance Reduction System Figure 303.10.1(3) Masonry Clearance Reduction System
69	Table 313.3 Hangers and Supports
70	Chapter 4 Ventilation Air 401.0 General. 401.1 Applicability. 402.0 Ventilation Air. 402.1 Occupiable Spaces. 402.1.1 Construction Documents. 402.1.2 Dwelling. 402.1.3 Ventilation in Health Care Facilities. 402.2 Natural Ventilation. 402.2.1 Floor Area to Be Ventilated. 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. TABLES
71	402.4 Outdoor Air Intake Protection. 402.4.1 Weather Protections. 403.0 Ventilation Rates. 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. 403.3 Single-Zone Systems. 403.4 One Hundred Percent Outdoor Air Systems. 403.5 Multiple-Zone Recirculating Systems. 403.5.1 Primary Outdoor Air Fraction. 403.5.2 System Ventilation Efficiency. 403.5.3 Uncorrected Outdoor Air Intake.
72	403.5.4 Outdoor Air Intake. 403.6 Design for Varying Operating Conditions. 403.6.1 Short-Term Conditions. 403.7 Exhaust Ventilation. 403.7.1 Parking Garages. 403.7.2 Enclosed Parking Garages. 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.
73	403.9.4 Class 4 Air. 404.0 Multiple-Zone Systems. 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.
74	Table 402.1 Minimum Ventilation Rates in Breathing Zone
76	Table 403.2.2 Zone Air Distribution Effectiveness Table 403.5.2 System Ventilation Efficiency
77	TABLE 403.7 Minimum Exhaust Rates
78	Chapter 5 Exhaust Systems 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. TABLES FIGURES
79	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. 504.4.3 Commercial Clothes Dryers. 504.4.3.1 Exhaust Ducts for Type 2 Clothes Dryers.
80	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 Incompatible Materials. 505.1.2 Flammability Limit. 505.1.3 Mechanical Ventilation. 505.2 Penetrations. 505.3 Product-Conveying Ducts Classification. 505.4 Minimum Velocities and Circulation.
81	505.5 Makeup Air. 505.6 Hoods and Enclosures. 506.0 Product-Conveying Ducts. 506.1 Materials. Table 505.4 Minimum Duct Design Velocities
82	506.2 Construction. 506.3 Fittings. 506.4 Explosion Venting. 506.5 Supports. 506.5.1 Loads. 506.5.2 Corrosion. 506.5.3 Vibration and Stress. 506.5.4 Expansion and Contraction. 506.6 Fire Protection. 506.7 Duct Clearances. 506.7.1 Spacers and Ties. 506.7.2 Air Circulation.
83	Table 506.2(1) Minimum Sheet Metal Thickness for Round Ducts
84	506.7.3 Wool Batts Insulation. 506.7.4 Insulation Board. 506.7.5 Clearance with Wall Protector/Surface. 506.7.6 High Temperature Duct Systems. 506.7.7 Reduced Clearance. 506.7.7.1 Wall Protector.
85	506.7.7.2 Single Flat Wall. 506.7.7.3 Wall Protectors that Cover Two Walls. 506.8 Protection from Physical Damage. Table 506.2(2) Minimum Sheet Metal Thickness for Rectangular Ducts
86	Part II – Commercial Hoods and Kitchen Ventilation. 507.0 General Requirements. 507.1 Exhaust System. 507.2 Listed Devices. 507.2.1 Penetration. 507.3 Clearance. 507.3.1 Listed. 507.3.2 Clearance Reduction. 507.3.2.1 Mineral Wool Batts or Ceramic Fiber Blanket. 507.3.2.2 Field-Applied Grease Duct Enclosure. 507.3.2.3 Zero Clearance. 507.3.3 Clearance Integrity. 507.3.3.1 Fire.
87	507.3.3.2 Required Protection. 507.3.3.3 Protection Methods. 507.3.4 Factory Built. 507.3.5 Field Applied. 507.3.6 Both Field-Applied and Factory Built. 507.3.6.1 Physical Damage. 507.3.6.2 Specification. 507.3.6.3 Clearance Options. 507.3.7 Building and Structural Contact. 507.3.7.1 Corrosion Protection. 507.3.7.2 Zero Clearance. 507.3.8 Clearance Between Duct and Interior Surfaces. 507.4 Drawings. 507.5 Notification of Change. 508.0 Hoods. 508.1 Where Required.
88	508.2 Listed Type I Hood Assemblies. 508.2.1 Listed Ultraviolet Hoods. 508.2.2 Construction of Listed Exhaust Hoods. 508.2.3 Assembly of Listed Exhaust Hoods. 508.3 Construction of Type I Hoods. 508.4 Construction of Type II Hoods. 508.5 Supports. 508.6 Grease Vapor. 508.7 Seams, Joints, and Penetrations. 508.7.1 Sealed. 508.8 Eyebrow-Type Hoods. 508.8.1 Duct Connection. 508.9 Insulation. 508.10 Hood Size. 508.10.1 Canopy Size and Location.
89	508.10.1.1 Capacity of Hoods. 508.10.1.2 Extra-Heavy-Duty Cooking Appliances. 508.10.1.3 Heavy-Duty Cooking Appliances. 508.10.1.4 Medium-Duty Cooking Appliances. Table 508.10.1.2 Extra-Heavy-Duty Cooking Appliance Airflow Table 508.10.1.3 Heavy-Duty Cooking Appliance Airflow Table 508.10.1.4 Medium-Duty Cooking Appliance Airflow Figure 508.8 Typical Section of Eyebrow-Type Hood
90	508.10.1.5 Light-Duty Cooking Appliances. 508.10.1.6 Dishwashing Appliances. 508.10.2 Noncanopy-Type Hoods. 508.10.2.1 Installation. 508.10.2.2 Capacity. 508.10.3 Labeling. 508.11 Exhaust Hood Assemblies with Integrated Supply-Air Plenums. 508.11.1 Outer Shell. 508.11.2 Inner Shell. 508.11.3 Fire Dampers. 508.11.3.1 Listing. 508.11.3.2 Actuating Temperature. 508.11.3.3 Exemption. 508.12 Solid-Fuel Hood Assemblies. 508.13 Exhaust Outlets. 509.0 Grease Removal Devices in Hoods. 509.1 Grease Removal Devices. 509.1.1 Grease Filters, Mesh-Type. 509.2 Installation. Table 508.10.1.5 Light-Duty Cooking Appliance Airflow
91	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. 509.2.3 Grease Filters. 509.2.3.1 Arrangement. 509.2.3.2 Accessibility. 509.2.3.3 Angled Installation. 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.
92	510.1.7 Type II Exhaust Duct Systems. 510.1.8 Type I Exhaust Duct Systems. 510.2 Clearance. 510.3 Openings. 510.3.1 Access Panel. 510.3.2 Access for Cleaning and Inspection. 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 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.
93	510.5.3 Installation. 510.5.3.1 Duct Leakage Test. 510.5.3.2 Welded Duct Connection. 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.
94	Figure 510.5.3 Permitted Duct-to Hood Collar Connection Figure 510.5.3.2(1) Telescoping-Type Duct Connection Figure 510.5.3.2(2) Bell-Type Duct Connection Figure 510.5.3.2(3) Flange with Edge Weld Duct Connection Figure 510.5.3.2(4) Flange with Filled Weld Duct Connection
95	510.7.4 Mechanical and Structural Integrity. 510.7.5 Materials. 510.7.5.1 Protection from Physical Damage. 510.7.5.2 Inspection. 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.
96	510.9.1.1 Listed Flexible Connectors. 510.9.1.2 Inspection and Cleaning. 510.9.2 Wall Terminations. 510.10 Termination of Type II Hood Exhaust System. Figure 510.9.1 Upblast Fan Clearances Figure 510.9.2 Exhaust Termination Distance from Fresh Air Intake (FAI) or Operable Door or Window
97	510.11 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. 511.1.3 Utility Set Exhaust Fans. 511.1.3.1 At the Rooftop. 511.1.3.2 Within the Building. 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.
98	511.2.2.2 Capture and Containment Test. 511.2.3 Operation. 511.3 Makeup Air. Figure 511.1.2(1) Typical Section of Duct-to-Fan Connection-Butt Joint Method Figure 511.1.2(2) Typical Section of Duct-to-Fan Connection-Overlapping Method Figure 511.1.2(3) Typical Section of Duct-to-Fan Connection-Sealant Method Figure 511.1.2(4) Typical Section of Duct-to-Fan Connection-Direct to Fan Inlet Cone Method
99	511.3.1 Air Balance. 511.4 Common Duct (Manifold) Systems. 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 Fire-Extinguishing System.
100	512.3.2 Air Recirculation. 512.4 Solid-Fuel Auxiliary Equipment. 513.0 Fire-Extinguishing Equipment. 513.1 General. 513.1.1 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 Fixed Baffle Hoods with Water Wash. 513.2.5.1 Domestic Water Supply. 513.2.5.2 Control Valve. 513.2.5.3 Activation. 513.2.5.4 Water-Wash System. 513.2.5.5 Exception. 513.2.5.6 Water Supply.
101	513.2.6 Water Valve Supervision. 513.3 Simultaneous Operation. 513.3.1 Automatic Sprinkler System. 513.3.2 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. 513.5.1 Location of Manual Activation Device. 513.5.2 Automatic Sprinkler System. 513.5.3 Manual Actuator(s). 513.5.4 Standby Power Supply. 513.6 System Annunciation. 513.6.1 Signaling. 513.7 System Supervision. 513.7.1 Automatic Fire-Extinguishing System.
102	513.7.2 Supervision. 513.7.3 Listed Water Wash System. 513.8 Special Design and Application. 513.8.1 Single Device. 513.9 Review and Certification. 513.10 Installation Requirements. 513.11 Portable Fire Extinguishers. 513.11.1 Other Fire Extinguishers. 513.12 Maintenance. 513.12.1 Permitted Use. 513.13 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.
103	514.2.3 Inspection Tag. 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 Removal of Contaminants. 514.4.2 Electrical Switches. 514.4.3 Fire Suppression System. 514.4.4 Inoperable. 514.4.5 Solvents/Cleaning Aids. 514.4.6 Cleaning Chemicals. 514.4.7 Coating. 514.4.8 Access Panels and Cover Plates. 514.4.9 Date of Inspection. 514.4.10 Airflow. 514.4.11 Operable State. 514.4.12 Certification of Service. 514.4.13 Report Provided. 514.4.14 Unclean Area. 514.5 Cooking Equipment Maintenance. 514.5.1 Cleaning. Table 514.3 Schedule of Inspection for Grease Buildup
104	515.0 Minimum Safety Requirements for Cooking Equipment. 515.1 Cooking Equipment. 515.1.1 Installation. 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. 516.2.2 Recirculation. 516.2.3 Protection. 516.2.4 Maximum Limits. 516.2.5 Label. 516.2.6 Fire Damper.
105	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. 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.
106	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. 517.4 Exhaust Systems for Solid-Fuel Cooking.
107	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-Fuel Cooking. 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. 517.7.7 Auxiliary Fuel.
108	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. 518.4.2 Manual Reset. 518.5 Surface Materials.
110	Chapter 6 Duct Systems 601.0 General. 601.1 Applicability. 601.2 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 Loudspeakers and Recessed Lighting. 602.2.5 Discrete Products in Plenums. 602.3 Metal. 602.4 Existing Metal Ducts. 602.5 Gypsum.
111	602.6 Factory-Made Air Ducts. 602.7 Vibration Isolators. 602.8 Corridors. 603.0 Installation of Ducts. 603.1 General. 603.2 Under Floor or Crawl Space. 603.3 Metal Ducts. 603.3.1 Rectangular Ducts. 603.3.2 Horizontal Round Ducts. 603.3.2.1 Tight-Fitting Around the Perimeter. 603.3.2.2 Size of Circular Bands. 603.3.2.3 Connection. 603.3.3 Earthquake Loads. 603.4 Factory-Made Air Ducts and Connectors. 603.4.1 Length Limitation. 603.5 Flexible Air Ducts and Connectors. 603.6 Plastic Ducts. 603.7 Protection of Ducts. 603.8 Support of Ducts. 603.9 Protection Against Flood Damage.
112	603.10 Joints and Seams of Ducts. 603.11 Cross Contamination. 603.12 Underground Installation. 604.0 Insulation of Ducts. 604.1 General. 604.1.1 Within Ducts or Plenums. 604.1.2 Duct Coverings and Linings. 605.0 Smoke Dampers, Fire Dampers, and CeilingDampers. 605.1 Smoke Dampers. 605.2 Fire Dampers. 605.3 Ceiling Radiation Dampers.
113	605.4 Multiple Arrangements. 605.5 Access and Identification. 605.6 Freedom from Interference. 605.7 Temperature Classification of Operating Elements. 606.0 Ventilating Ceilings. 606.1 General. 606.2 Requirements. 607.0 Use of Under-Floor Space as Supply Plenum for Dwelling Units. 607.1 General. 607.2 Dwelling Units. 607.3 Enclosed. 607.4 Flammable Materials. 607.5 Access. 607.6 Automatic Control. 607.7 Temperature Limit. 607.8 Noncombustible Receptacle. 607.8.1 Location. 607.8.2 Area. 607.8.3 Perimeter. 607.9 Floor Registers. 607.10 Exterior Wall and Interior Stud Partitions. 607.11 Wall Register. 607.12 Distance from Combustible. 607.13 Vapor Barrier.
114	607.14 Prohibited. 608.0 Automatic Shutoffs. 608.1 Air-Moving Systems and Smoke Detectors.
116	Chapter 7 Combustion Air 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. 701.6.1 Two Permanent Openings Method. FIGURES
117	701.6.2 One Permanent Opening Method. 701.7 Combination Indoor and Outdoor Combustion Air. Figure 701.5 Combustion Air from Adjacent Indoor Spaces through Indoor Combustion Air Openings Figure 701.6.1(1) Combustion Air from Outdoors Inlet Air from Ventilated Crawl Space and Outlet Air to Ventilated Attic Figure 701.6.1(2) Combustion Air from Outdoors through Ventilated Attic
118	701.7.1 Indoor Openings. 701.7.2 Outdoor Openings. 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) Combustion Air from Outdoors through Horizontal Ducts Figure 701.6.2 Combustion Air From Outdoors through Single Combustion Air Opening
119	701.11 Combustion Air Ducts. 701.12 Dampers Prohibited. 702.0 Process Air. 702.1 General. 703.0 Extra Device or Attachment. 703.1 General. 704.0 Bleed Lines for Diaphragm-Type Valves. 704.1 General.
120	Chapter 8 Chimneys and Vents 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 Ventilating Hoods. 802.2.3 Well-Ventilated Spaces. 802.2.4 Direct-Vent Appliances. 802.2.5 Appliances with Integral Vents. 802.3 Design and Construction. 802.3.1 Appliance Draft Requirements. 802.3.2 Appliance Venting Requirements. 802.3.3 Mechanical Draft Systems. TABLES FIGURES
121	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. 802.3.4.1 Automatically Operated Appliance. 802.3.5 Circulating Air Ducts and Furnace Plenums. 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 Vent. 802.5 Masonry, Metal, and Factory-Built Chimneys. 802.5.1 Factory-Built Chimneys. Table 802.4 Type of Venting System to be Used
122	802.5.1.1 Decorative Shrouds. 802.5.1.2 Listing Requirements. 802.5.2 Metal Chimneys. 802.5.3 Masonry Chimneys. 802.5.4 Termination. 802.5.4.1 Medium-Heat Gas Appliances. 802.5.4.2 Chimney Height. 802.5.4.3 Decorative Shrouds. Figure 802.5.4 Typical Termination Locations for Chimneys and Single-Wall Metal Pipes Serving Residential-Type and Low-Heat Appliance
123	802.5.5 Size of Chimneys. 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. 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.
124	802.6 Gas Vents. 802.6.1 Fasteners. 802.6.2 Termination Requirements. 802.6.2.1 Type B and L Vents. 802.6.2.2 Type B-W Vents. 802.6.2.3 Exterior Wall Termination. 802.6.2.4 Decorative Shrouds. 802.6.2.5 Termination Cap. 802.6.2.6 Forced Air Inlet. 802.6.2.7 Insulation Shield. 802.6.3 Size of Gas Vents. 802.6.3.1 Category I Appliances. Table 802.6.2 Roof Pitch Height Figure 802.6.2 Gas Vent Termination Locations for Listed Caps 12 Inches or Less in Size not Less than 8 Feet from a Vertical Wall
125	802.6.3.2 Vent Offsets. 802.6.3.3 Category II, Category III, and Category IV Appliances. 802.6.3.4 Sizing. 802.6.4 Gas Vents Serving Appliances on More than One Floor. 802.6.4.1 Occupiable Space. 802.6.4.2 Multistory Venting System. Figure 802.6.4.1 Plan View of Pratical Separation Method for Multistory Gas Venting Figure 802.6.4.2 Use of Manifolded Common Vent Connector
126	802.6.5 Support of Gas Vents. 802.6.6 Marking. 802.7 Single-Wall Metal Pipe. 802.7.1 Cold Climate. 802.7.2 Termination. 802.7.3 Installation with Appliances Permitted by Table 802.4. 802.7.3.1 Limitations. 802.7.3.2 Attic or Concealed Space. 802.7.3.3 Incinerator. 802.7.3.4 Clearances. 802.7.3.5 Combustible Exterior Wall. Table 802.7.3.4 Clearance for Connectors
127	802.7.3.6 Roof Thimble. 802.7.4 Size of Single-Wall Metal Pipe. 802.7.4.1 Sizing of Venting System. 802.7.4.2 Non-Round Metal Pipe. 802.7.4.3 Venting Capacity. 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 Nuisance and Hazard. 802.8.4 Annular Spaces.
128	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. 802.10.1.2 Residential Type Appliances. 802.10.1.3 Non-Residential Low-Heat Appliances. 802.10.1.4 Medium-Heat Appliances. Table 802.10.1.3 Minimum Thickness for Galvanized Steel Vent Connectors for Low-Heat Appliances
129	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. 802.10.5 Joints. 802.10.6 Slope. 802.10.7 Length of Vent Connector. Table 802.10.1.4 Minimum Thickness for Steel Vent Connectors for Medium-Heat Appliances and Commercial and Industrial Incinerators
130	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. 802.12.4 Location. 802.12.5 Positioning. 802.12.6 Clearance.
131	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. 803.1.3 Zero Lateral. 803.1.4 High-Altitude Installations. 803.1.5 Multiple Input Ratings. 803.1.6 Corrugated Chimney Liner Reduction.
132	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. 803.2 Multiple Appliance Vent Table 803.2(1) through Table 803.2(9).
133	803.2.1 Vent Connector Maximum Length. 803.2.2 Vent Connector Exceeding Maximum Length. 803.2.3 Vent Connector Manifold. 803.2.4 Vent Offset. 803.2.5 Elbow Reduction. 803.2.6 Common Vent Minimum Size. 803.2.7 Tee and Wye Fittings. 803.2.8 Size of Fittings. Table 803.2.1 Vent Connector Maximum Length
134	803.2.9 High-Altitude Installations. 803.2.10 Connector Rise. 803.2.11 Vent Height. 803.2.12 Multistory Installations. 803.2.13 Size of Vents for Multistory Installations. 803.2.14 Vent Type Multistory Installation. 803.2.15 Offsets in Multistory Installations. Figure 803.2.12 Multistory Gas Vent Design Procedure for Each Segment of System Figure 803.2.13 Principles of Design of Multistory Vents Using Vent Connector and Common Vent Design Tables
135	803.2.16 Vertical Vent Size Limitation. 803.2.17 Multiple Input Ratings. 803.2.18 Corrugated Metallic Chimney Liner Reduction. 803.2.19 Chimneys and Vents. 803.2.20 Vent Connector Sizing. 803.2.21 Combination of Pipe Types and Sizes. 803.2.22 Multiple Connector and Vent Sizes. 803.2.23 Interpolation. 803.2.24 Extrapolation. 803.2.25 Engineering Methods.
136	803.2.26 Height Entries. Figure 803.1.2(6) Range of Winter Design Temperatures Used in Analyzing Exterior Masonry Chimneys in the United States
137	Table 803.1.2(1) Type B Double-Wall Gas Vent
140	Table 803.1.2(2) Type B Double-Wall Gast Vent
142	Table 803.1.2(3) Masonry Chimney
144	Table 803.1.2(4) Masonry Chimney
146	Table 803.1.2(5) Single-Wall Metal Pipe or Type B Asbestos-Cement Vent
147	Table 803.1.2(6) Exterior Masonry Chimney
148	Table 803.2(1) Type B Double-Wall Vent
152	Table 803.2(2) Type B Double-Wall Vent
154	Table 803.2(3) Masonry Chimney
156	Table 803.2(4) Masonry Chimney
158	Table 803.2(5) Single-Wall Metal Pipe or Type B Asbestos-Cement Vent Table 803.2(6) Exterior Masonry Chimney
159	Table 803.2(7) Exterior Masonry Chimney
160	Table 803.2(8) Exterior Masonry Chimney
161	Table 803.2(9) Exterior Masonry Chimney
162	Chapter 9 Installation of Specific Appliances 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 Equipment or Appliances. 902.4 Type of Gas(es). 902.5 Fuel Input Rate. 902.6 Building Structural Members. 902.6.1 Structural Capacity. 902.7 Flammable Vapors. 902.8 Solid-Fuel Burning Appliances. 902.9 Combination of Appliances and Equipment. 902.10 Protection of Gas Appliances from Fumes or Gases Other than Products of Combustion. TABLES FIGURE
163	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. 903.2.4 Assembly and Installation. 903.2.5 Furnace Plenums and Air Ducts. 903.2.6 Refrigeration Coils. 903.2.7 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.
164	904.2 Clearance. 904.3 Assembly and Installation. 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. TABLE 904.2 Clearances to Combustible Material for Unlisted Furnaces, Boilers, And Air Conditioners
165	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 Furnace Plenums and Air Ducts. 904.8 Refrigeration Coils. 904.9 Cooling Units Used with Heating Boilers. 904.10 Furnace (Upright and Horizontal). 904.11 Solid-Fuel Furnaces. 904.12 Oil-Fired Central Furnaces. 904.13 Commercial or Industrial Gas Heaters.
166	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. 905.7 Installation in Commercial Garages and Aircraft Hangars. 905.8 Installation in Commercial Garages. 905.8.1 Repair Garages. 905.9 Installation in Aircraft Hangars. 905.10 Electric Duct Heaters. 905.10.1 Installation. 905.10.2 Clearance.
167	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. 906.10 Wind Protection. 906.11 Upper-Floor Installations. 906.12 First Floor Installation. 906.13 Oil-Fired Floor Furnaces.
168	907.0 Wall Furnaces. 907.1 Installation. 907.2 Location. 907.3 Combustion and Circulating Air. 907.4 Oil-Fired Wall Furnaces. 908.0 Clothes Dryers. 908.1 Electric Clothes Dryers. 908.2 Gas-Fired Clothes Dryers. 908.2.1 Clearance. Figure 907.1 Installation of Type B-W Gas Vents for Vented Wall Furnaces
169	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. 911.3 Fireplace Screens. 912.0 Gas Fireplaces, Vented. 912.1 Prohibited Installations. 912.2 Installation. Table 911.2 Free Opening Area of Chimney Damper for Venting Flue Gases from Unlisted Decorative Appliances for Installation in Vented Fireplaces
170	912.3 Combustion and Circulating Air. 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. 914.4 Clearance from Combustible Materials. 914.5 Air Supply. 914.6 Atmospheric Vents, Gas Reliefs, or Bleeds. 914.7 Relief Openings. 914.8 Purging. 915.0 Recirculating Direct Gas-Fired Industrial Air Heaters. 915.1 Application. 915.2 Prohibited Installations.
171	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. 915.8 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. 916.2.3 Clearance.
172	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. 918.3 Mounting on Combustible Floors.
173	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. 919.4 Mounting of Unlisted Appliances. 920.0 Hot Plates and Laundry Stoves. 920.1 General.
174	921.0 Household Cooking Appliances. 921.1 Electric Household Cooking Appliances. 921.2 Gas-Fired Household Cooking Appliances. 921.3 Floor-Mounted Units. 921.3.1 Clearance from Combustible Material. 921.3.2 Vertical Clearance Above Cooking Top. 921.4 Built-In Units. 921.4.1 Installation. 921.4.2 Vertical Clearance. 921.4.3 Horizontal Clearance. 921.4.4 Level Installation.
175	922.0 Cooking Appliances Listing. 922.1 Commercial Electric Ranges. 922.2 Commercial Wood-Fired Baking Ovens. 922.3 Oil-Burning Ranges. 923.0 Open-Top Broiler Units. 923.1 Listed Units. 923.2 Unlisted Units. 923.3 Protection Above Domestic Units. 923.4 Commercial Units. 924.0 Outdoor Cooking Appliances. 924.1 Listed Units. 924.2 Unlisted Units. 925.0 Illuminating Appliances. 925.1 Clearances for Listed Appliances. 925.2 Clearances for Unlisted Appliances. 925.2.1 Open-Flame Type. 925.3 Mounting on Buildings. Table 925.2.1 Clearances for Unlisted Outdoor Open-Flame Illuminating Appliances
176	925.4 Mounting on Posts. 925.5 Appliance Pressure Regulators. 926.0 Incinerators and Crematories. 926.1 Field Constructed Commercial-Industrial Incinerators. 926.2 Factory-Built Commercial Crematories. 926.3 Residential Incinerators. 927.0 Infrared Heaters. 927.1 Support. 927.2 Suspended Low-Intensity Infrared Tube Heaters. 927.3 Clearance. 927.4 Combustion and Ventilation Air. 927.5 Installation in Commercial Garages and Aircraft Hangars. 928.0 Pool Heaters. 928.1 Location. 928.2 Clearance. 928.3 Temperature or Pressure-Limiting Devices. 928.4 Bypass Valves.
177	928.5 Venting. 929.0 Refrigerators. 929.1 Clearance. 929.2 Venting or Ventilating Kits Approved for Use with a Refrigerator. 930.0 Gas-Fired Toilets. 930.1 Clearance. 930.2 Installation on Combustible Floors. 930.3 Vents. 931.0 Appliances for Installation in Manufactured Housing. 931.1 General. 932.0 Small Ceramic Kilns. 932.1 General. 932.2 Installation. 932.3 Fuel-Gas Controls. 932.4 Electrical Equipment. 932.5 Installations Inside Buildings. 932.5.1 Kiln Clearances. 932.5.2 Hoods. 932.5.3 Gravity Ventilation Ducts. 932.5.4 Makeup Air.
178	932.5.5 Hood and Duct Clearances. 932.6 Exterior Installations. 933.0 Outdoor Open Flame Decorative Appliances. 933.1 General. 933.1.1 Listed Units. 933.1.2 Unlisted Units. 933.1.3 Connection to the Piping System. 934.0 Evaporative Cooling Systems. 934.1 General. 934.2 Location. 934.3 Access, Inspection, and Repair. 934.4 Installation. 934.4.1 Modifications to the Supporting Structure. 934.4.2 On the Ground. 934.4.3 On a Platform. 935.0 Refrigeration Appliances. 935.1 Self-Contained Refrigerators and Freezers. 935.2 Unit Coolers. 935.3 Self-Contained Mechanical Refrigeration Systems. 936.0 Ductless Mini-Split Systems Installation. 936.1 General. 937.0 Air Filter Appliances. 937.1 Electrostatic Air Cleaners. 937.2 High-Efficiency Particulate Air Filter Units. 938.0 Gaseous Hydrogen Systems. 938.1 General. 939.0 Compressed Natural Gas (CNG) Vehicular Fuel Systems. 939.1 General.
180	Chapter 10 Boilers and Pressure Vessels 1001.0 General. 1001.1 Applicability. 1001.2 Boiler Rooms and Enclosures. 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 Boilers. 1003.0 Detailed Requirements. 1003.1 Safety Requirements. 1003.2 Controls. TABLES
181	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. Table 1004.4(1) Expansion Tank Capacities for Gravity Hot Water System
182	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
183	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. 1013.5 Steam-Heating and Water-Heating Boilers.
184	1013.6 Automatic Steam-Heating Boilers. 1013.7 Unfired Pressure Vessels. 1014.0 Operation and Maintenance of Boilers and Pressure Vessels. 1014.1 General.
185	Table 1003.2.1 Controls and Limit Devices for Automatic Boilers
188	Chapter 11 Refrigeration 1101.0 General. 1101.1 Applicability. 1101.2 Equipment. Part I – Refrigeration Systems. 1102.0 Refrigeration Systems. 1102.1 General. 1102.2 Refrigerants. 1103.0 Classification. 1103.1 Classification of Refrigerants. 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. 1104.2.1 Volume Calculations. 1104.2.2 Nonconnecting Spaces. TABLES
189	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. 1104.7 Refrigerant Type and Purity. 1104.7.1 Recovered Refrigerants. 1104.7.2 Recycled Refrigerants.
190	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. 1105.5 Ventilation of Rooms Containing Condensing Units. 1105.5.1 Permanent Gravity Ventilation Openings. 1105.5.2 Mechanical Exhaust System.
191	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. 1106.2 Dimensions. 1106.3 Exits. 1106.4 Refrigerant-Vapor Alarms.
192	1106.5 Separation. 1106.6 Combustion Air. 1106.7 Airflow. 1106.8 Special Requirements. 1107.0 Refrigeration Machinery Room Ventilation. 1107.1 General. 1107.2 Refrigeration Machinery Rooms. 1107.3 Natural Ventilation. 1107.4 Distribution of Ventilation. 1107.5 Use of Ventilation Systems for Other Purposes. 1107.6 Emergency Control of the Ventilation Systems.
193	1107.7 Ventilation Discharge. 1107.8 Fans. 1107.9 Ventilation Intake. 1107.10 Maximum Temperature. 1107.11 Refrigerant Parts in Air Duct. 1108.0 Refrigeration Machinery Room Equipment and Controls. 1108.1 General. 1108.2 Electrical. 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 Iron and Steel. 1109.1.3 Prohibited Contact. 1109.2 Joints. 1109.3 Penetration of Piping.
194	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. 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.
195	1110.4 Access. 1110.5 Identification. 1111.0 Pressure-Limiting Devices. 1111.1 Where Required. 1111.2 Setting. 1111.3 Connection. 1111.4 Operation. 1112.0 Pressure-Relief Devices. 1112.1 General. 1112.2 Positive Displacement Compressor. 1112.3 Liquid-Containing Portions of Systems. 1112.4 Evaporators.
196	1112.5 Actuation. 1112.6 Stop Valves Prohibited. 1112.7 Location. 1112.8 Materials. 1112.9 Pressure-Relief Device Settings. 1112.9.1 Rupture Member Setting. 1112.10 Discharge from Pressure-Relief Devices. 1112.10.1 Discharging Location Interior to Building. 1112.10.2 Discharging Location Exterior to Building.
197	1112.10.3 Internal Relief. 1112.10.4 Discharge Location, Special Requirements. 1112.10.4.1 Water (R-718). 1112.11 Discharge Piping. 1112.11.1 Piping Connection. 1112.11.2 Pipe Size. 1112.11.3 Maximum Length. 1112.11.4 Design Back Pressure. Table 1112.11.3 Atmospheric Pressure at Nominal Installation Elevation (Pa)
198	1112.11.5 Simultaneous Operation. 1112.12 Rating of Pressure-Relief Device. 1112.13 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.
199	1113.5 Discharge Capacity. 1113.6 Three-Way Valve. 1114.0 Special Discharge Requirements. 1114.1 General. 1114.2 Design Requirements. Table 1113.5 Relief Devices Capacity Factor
200	1114.3 Testing. 1115.0 Labeling and Identification. 1115.1 General. 1115.2 Volume and Type. 1115.3 Permanent Sign. 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.
201	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. Table 1116.2 Field Leak Test Pressures (psig)*
202	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. 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.
203	Table 1102.2 Refrigerant Groups, Properties, and Allowable Quantities
207	Table 1104.1 Permissible Refrigeration Systems
208	Chapter 12 Hydronics 1201.0 General. 1201.1 Applicability. 1201.2 Insulation. 1201.3 Water Hammer. 1201.4 Manifolds. 1201.5 Heat Emitters. 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 Heater. 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
209	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. 1205.4 Oxygen Diffusion Corrosion. 1206.0 Safety Devices. 1206.1 General. 1206.2 Pressurized Vessels. 1206.3 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 of Letters
210	1207.3.1 Temperature Limitations. 1207.4 Solar Heat Collector Systems. 1208.0 Circulators. 1208.1 General. 1208.2 Mounting. 1208.3 Sizing. 1209.0 Expansion Tanks. 1209.1 Where Required. 1209.2 Systems with Closed Expansion Tanks. 1209.3 Systems with Open Expansion Tanks. 1210.0 Materials. 1210.1 Piping, Tubing, and Fittings. 1210.2 Expansion and Contraction. 1210.3 Hangers and Supports. 1211.0 Joints and Connections. 1211.1 General.
211	1211.2 Chlorinated Polyvinyl Chloride (CPVC) Pipe. 1211.3 Copper or Copper Alloy Pipe and Tubing. Table 1210.1 Materials for Hydronic System Piping, Tubing, and Fittings
212	1211.4 Cross-Linked Polyethylene (PEX) Pipe. 1211.5 Cross-Linked Polyethylene/Aluminum/Cross-Linked Polyethylene (PEX-AL-PEX) Pipe. 1211.6 Ductile Iron Pipe.
213	1211.7 Polyethylene (PE) Plastic Pipe/Tubing. 1211.8 Polyethylene/Aluminum/ Polyethylene (PEAL-PE). 1211.9 Polyethylene of Raised Temperature (PE-RT). 1211.10 Polypropylene (PP) Pipe. 1211.11 Polyvinyl Chloride (PVC) Pipe.
214	1211.12 Steel Pipe and Tubing. 1211.13 Joints Between Various Materials. 1211.13.1 Copper or Copper Alloy Pipe or Tubing to Threaded Pipe Joints. 1211.13.2 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.
215	1213.0 System Controls. 1213.1 Water Temperature Controls. 1213.2 Radiant Floor Heating Panels. 1213.3 Operating Steam Controls. 1213.3.1 Water-Level Controls. 1213.4 Occupied Spaces. 1213.5 Return-Water Low-Temperature Protection. 1214.0 Pressure and Flow Controls. 1214.1 Balancing. 1214.2 Low-Water Control. 1214.3 Flow-Sensing Devices. 1214.4 Automatic Makeup Water. 1214.5 Differential Pressure Regulation. 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 Medium.
216	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. 1217.2 Radiant Under-Floor Heating. 1217.3 Chilled Water Systems. 1217.4 Dehumidification. 1217.5 Tube Placement. 1217.6 Poured Floor Systems (Thermal Mass). 1217.6.1 Slab Penetration Tube and Joint Protection. 1217.6.2 Insulation. Table 1217.5 Maximum Length of Continuous Tubing from a Suppy-and-Return Manifold Arrangement
217	1217.6.3 Joist Systems and Subfloors. 1217.6.4 Wall and Ceiling Panels. 1217.7 Radiant Heating and Cooling Panels. 1217.7.1 Electric Heating Panel Systems. 1217.7.2 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 Auxiliary Systems. 1220.1 General.
218	1220.2 Use of Chemical Additives and Corrosive Fluids. 1220.3 Snow Melt. 1220.3.1 Tube Placement. 1220.3.2 Poured Concrete Slab Systems (Thermal Mass). 1220.3.3 Slab Penetration Tube and Joint Protection. 1220.3.4 Concrete Slab Preparation. 1220.3.5 Insulation. 1220.3.6 Testing. 1220.4 Hydronic Makeup Air Units. 1221.0 Piping Installation. 1221.1 General. 1221.2 Embedded Piping and Joints. 1221.2.1 Steel Pipe. 1221.2.2 Copper Tubing. 1221.2.3 Plastics. 1221.3 Pressure Tested. Table 1220.3.1 Loop Lengths for Snow Melt Systems
219	1221.4 System Drainage. 1221.5 Condensate Drainage. 1221.6 Clearance to Combustibles.
220	Chapter 13 Fuel Gas Piping 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. 1303.3.3 Test Gauges. TABLES FIGURES
221	1303.3.3.1 Pressure Tests (10 psi or less). 1303.3.3.2 Pressure Tests (greater than 10 psi 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.
222	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 Materials. 1308.5.1.1 Other Materials. 1308.5.2 Metallic Pipe. 1308.5.2.1 Steel and Wrought-Iron. 1308.5.2.2 Copper and Copper Alloy. Table 1308.4.1 Approximate Gas Input for Typical Appliances
223	1308.5.2.3 Aluminum Alloy. 1308.5.3 Metallic Tubing. 1308.5.3.1 Steel. 1308.5.3.2 Copper and Copper Alloy. 1308.5.3.3 Aluminum Alloy. 1308.5.3.4 Corrugated Stainless Steel. 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 Protective Coating. 1308.5.7 Metallic Pipe Threads. 1308.5.7.1 Damaged Threads. 1308.5.7.2 Number of Threads. Table 1308.5.7.2 Specifications for Threading Metallic Pipe
224	1308.5.7.3 Thread Joint Compounds. 1308.5.8 Metallic Piping Joints and Fittings. 1308.5.8.1 Pipe Joints. 1308.5.8.2 Tubing Joints. 1308.5.8.3 Flared Joints. 1308.5.8.4 Metallic Pipe Fittings (Including Valves, Strainers, Filters). 1308.5.9 Plastic Piping, Joints, and Fittings. 1308.5.9.1 Joint Design. 1308.5.9.2 Heat-Fusion Joint. 1308.5.9.3 Compression-Type Mechanical Joints. 1308.5.9.4 Liquefied Petroleum Gas Piping Systems.
225	1308.5.10 Flanges. 1308.5.10.1 Flange Facings. 1308.5.10.2 Lapped Flanges. 1308.5.11 Flange Gaskets. 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. 1308.6.4 Identification. 1308.7 Gas Pressure Regulators. 1308.7.1 Overpressure Protection. 1308.7.2 Listing. 1308.7.3 Location. 1308.7.4 Regulator Protection. 1308.7.5 Venting of Line Pressure Regulators.
226	1308.7.6 Venting of Gas Appliance Pressure Regulators. 1308.7.7 Discharge of Vents. 1308.7.8 Bypass Piping. 1308.7.9 Identification. 1308.8 Backpressure Protection. 1308.8.1 Protective Devices. 1308.9 Low-Pressure Protection. 1308.10 Shutoff Valves. 1308.11 Expansion and Flexibility. 1308.11.1 Special Local Conditions. 1309.0 Excess Flow Valve. 1309.1 General. 1310.0 Venting of Gas Appliance Pressure Regulators. 1310.1 General.
227	1311.0 Gas Piping Installation. 1311.1 Piping Underground. 1311.1.1 Cover Requirements. 1311.1.2 Trenches. 1311.1.2.1 Backfilling. 1311.1.3 Protection Against Corrosion. 1311.1.4 Protection Against Freezing. 1311.1.5 Piping through Foundation Wall. 1311.1.6 Piping Underground Beneath Buildings. 1311.1.6.1 Conduit with One End Terminating Outdoors. 1311.1.6.2 Conduit with Both Ends Terminating Indoors. 1311.1.7 Plastic Piping. 1311.1.7.1 Connections Between Metallic and Plastic Piping. 1311.1.7.2 Tracer Wire. 1311.2 Installation of Piping.
228	1311.2.1 Building Structure. 1311.2.2 Gas Piping to be Sloped. 1311.2.2.1 Ceiling Locations. 1311.2.3 Prohibited Locations. 1311.2.4 Hangers, Supports, and Anchors. 1311.2.4.1 Spacing. 1311.2.4.2 Expansion and Contraction. 1311.2.5 Removal of Piping. 1311.3 Concealed Piping in Buildings. 1311.3.1 Connections. 1311.3.2 Piping in Partitions. 1311.3.3 Tubing in Partitions. 1311.3.4 Piping in Floors. Table 1311.2.4.1 Support of Piping
229	1311.4 Piping in Vertical Chases. 1311.4.1 Pressure Reduction. 1311.4.2 Construction. 1311.4.3 Ventilation. 1311.5 Maximum Design Operating Pressure. 1311.6 Appliance Overpressure Protection. 1311.7 Gas Pipe Turns. 1311.7.1 Metallic Pipe. 1311.7.2 Plastic Pipe. 1311.7.3 Elbows.
230	1311.8 Drips and Sediment Traps. 1311.8.1 Location of Drips. 1311.8.2 Sediment Traps. 1311.9 Outlets. 1311.9.1 Cap Outlets. 1311.9.1.1 Appliance Shutoff Valves. 1311.10 Branch Pipe Connection. 1311.11 Manual Gas Shutoff Valves. 1311.11.1 Valves Controlling Multiple Systems. 1311.11.1.1 Shutoff Valves for Multiple House Lines. 1311.11.2 Emergency Shutoff Valves. 1311.11.3 Shutoff Valve for Laboratories. 1311.12 Prohibited Devices. 1311.13 Systems Containing Gas-Air Mixtures Outside the Flammable Range. 1311.14 Systems Containing Flammable Gas-Air Mixtures.
231	1311.14.1 Required Components. 1311.14.2 Optional Components. 1311.14.3 Additional Requirements. 1311.14.4 Special Requirements for Mixing Blowers. 1311.14.5 Installation of Gas-Mixing Machines. 1311.14.6 Use of Automatic Firechecks, Safety Blowouts, or Backfire Preventers.
232	1312.0 Electrical Bonding and Grounding. 1312.1 Pipe and Tubing Other than CSST. 1312.2 Bonding of CSST Gas Piping. 1312.3 Grounding Conductor of Electrode. 1312.4 Lightning Protection System. 1312.5 Electrical Circuits. 1312.6 Electrical Connections. 1312.6.1 Safety Control. 1313.0 Appliance Connections to Building Piping. 1313.1 Connecting Gas Appliances. 1313.1.1 Commercial Cooking Appliances. 1313.1.2 Restraining Device. 1313.2 Use of Gas Hose Connectors. 1313.2.1 Indoor. 1313.2.2 Outdoor.
233	1313.3 Connection of Portable and Mobile Industrial Appliances. 1313.3.1 Swivel Joints or Couplings. 1313.3.2 Metal Flexible Connectors. 1313.3.3 Flexible Connectors. 1313.4 Appliance Shutoff Valves and Connections. 1313.5 Quick-Disconnect Devices. 1313.6 Gas Convenience Outlets. 1313.7 Sediment Trap. 1313.8 Installation of Piping. 1313.9 Liquefied Petroleum Gas Facilities and Piping. 1313.9.1 Safety Shutoff Devices for Unlisted LP-Gas Appliance Used Indoors. Figure 1313.7 Method of Installing a Tee Fitting Sediment Trap
234	1314.0 Pressure Testing and Inspection. 1314.1 Piping Installations. 1314.1.1 Inspection Requirements. 1314.1.2 Repairs and Additions. 1314.1.3 New Branches. 1314.1.4 Piping System. 1314.1.5 Regulators and Valves. 1314.1.6 Test Medium. 1314.2 Test Preparation. 1314.2.1 Pipe Joints. 1314.2.2 Expansion Joints. 1314.2.3 Appliances and Equipment. 1314.2.4 Designed for (less than) Operating Pressures. 1314.2.5 Designed for (equal to or more than) Operating Pressures. 1314.2.6 Safety. 1314.3 Test Pressure. 1314.4 Detection of Leaks and Defects. 1314.4.1 Detecting Leaks. 1314.4.2 Repair or Replace.
235	1314.5 Piping System Leak Test. 1314.5.1 Turning Gas On. 1314.5.2 Leak Check. 1314.5.3 Placing Appliances and Equipment in Operation. 1314.6 Purging Requirements. 1314.6.1 Piping Systems Required to be Purged Outdoors. 1314.6.1.1 Removal from Service. 1314.6.1.2 Placing in Operation. 1314.6.1.3 Outdoor Discharge of Purged Gases. 1314.6.1.4 Combustible Gas Indicator. 1314.6.2 Piping Systems Allowed to be Purged Indoors or Outdoors. 1314.6.2.1 Purging Procedure. Table 1314.6.1 Size and Length of Piping
236	1314.6.2.2 Combustible Gas Detector. 1314.6.3 Purging Appliances and Equipment. 1315.0 Required Gas Supply. 1315.1 General. 1315.2 Volume. 1315.3 Gas Appliances. 1315.4 Size of Piping Outlets. 1316.0 Required Gas Piping Size. 1316.1 Pipe Sizing Methods. 1316.1.1 Longest Length Method. 1316.1.2 Branch Length Method. 1316.1.3 Hybrid Pressure. 1316.2 Tables for Sizing Gas Piping Systems. 1316.3 Sizing Equations.
237	1316.4 Sizing of Piping Sections. 1316.5 Engineering Methods. 1316.6 Variable Gas Pressures. Table 1316.3 Cr and Y for Natural Gas and Undiluted Propane at Standard Conditions
238	Figure 1316.1.1 Example Illustrating Use of Table 1308.4.1 and Table 1316.2(1)
239	Table 1316.2(1) Scedule 40 Metallic Pipe
240	Table 1316.2(2) Scedule 40 Metallic Pipe
241	Table 1316.2(3) Scedule 40 Metallic Pipe
242	Table 1316.2(4) Scedule 40 Metallic Pipe
243	Table 1316.2(5) Scedule 40 Metallic Pipe
244	Table 1316.2(6) Scedule 40 Metallic Pipe
245	Table 1316.2(7) Semi-Rigid Copper Tubing
246	Table 1316.2(8) Semi-Rigid Copper Tubing
247	Table 1316.2(9) Semi-Rigid Copper Tubing
248	Table 1316.2(10) Semi-Rigid Copper Tubing
249	Table 1316.2(11) Semi-Rigid Copper Tubing
250	Table 1316.2(12) Semi-Rigid Copper Tubing
251	Table 1316.2(13) Semi-Rigid Copper Tubing
252	Table 1316.2(14) Corrugated Stainless Steel Tubing (CSST)
253	Table 1316.2(15) Corrugated Stainless Steel Tubing (CSST)
254	Table 1316.2(16) Corrugated Stainless Steel Tubing (CSST)
255	Table 1316.2(17) Corrugated Stainless Steel Tubing (CSST)
256	Table 1316.2(18) Corrugated Stainless Steel Tubing (CSST)
257	Table 1316.2(19) Polyethylene Plastic Pipe
258	Table 1316.2(20) Polyethylene Plastic Pipe
259	Table 1316.2(21) Polyethylene Plastic Pipe
260	Table 1316.2(22) Polyethylene Plastic Tubing Table 1316.2(23) Polyethylene Plastic Tubing
261	Table 1316.2(24) Scedule 40 Metallic Pipe
262	Table 1316.2(25) Scedule 40 Metallic Pipe
263	Table 1316.2(26) Scedule 40 Metallic Pipe
264	Table 1316.2(27) Scedule 40 Metallic Pipe
265	Table 1316.2(28) Semi-Rigid Copper Tubing
266	Table 1316.2(29) Semi-Rigid Copper Tubing
267	Table 1316.2(30) Semi-Rigid Copper Tubing
268	Table 1316.2(31) Corrugated Stainless Steel Tubing (CSST)
269	Table 1316.2(32) Corrugated Stainless Steel Tubing (CSST)
270	Table 1316.2(33) Corrugated Stainless Steel Tubing (CSST)
271	Table 1316.2(34) Polyethylene Plastic Pipe
272	Table 1316.2(35) Polyethylene Plastic Pipe
273	Table 1316.2(36) Polyethylene Plastic Tubing
274	Chapter 14 Process Piping 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.
275	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.
276	Chapter 15 Soalr Energy Systems 1501.0 General. 1501.1 Applicability.
278	Chapter 16 Stationary Power Plants 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.
280	Chapter 17 Referenced Standards 1701.0 General. 1701.1 Standards. TABLE Table 1701.1 Referenced Standards
295	Abbreviations in Table 1701.1
296	Appendices Table of Contents
298	Appendix A Residential Plan Examiner Review Form for HVAC System Design (Loads, Equipment, Ducts) [ACCA] Residential Plans Examiner Review Form for HVAC System Design (Loads, Equipment, Ducts)
300	Appendix B Procedures to be Followed to Place Gas Equipment in Operation 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.
302	Appendix C Installation and Testing of Oil (Liquid) Fuel-Fired Equipment C 101.0 General. C 101.1 Applicability. C 102.0 Definitions.
303	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.
305	C 109.0 Special Requirements Based on Btu/h Input. C 109.1 General.
308	Appendix D Fuel Supply: Manufactured/Mobile Home Parks and Recreational Vehicle Parks 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 Equipment and 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. D 105.0 Cathodic Protection Requirements. D 105.1 General. TABLE
309	D 106.0 Manufactured Home Community LPG 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. D 110.2.1 Cathodic Protection. Table D 107.1 Demand Factors for Use in Calculating Gas Piping Systems in M/H Communities
310	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. D 113.2 Use of Approved Pipe and Fittings of Extension.
311	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. 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 M/H Communities.
312	D 115.3 Oil-Burning Equipment and Installation. D 115.4 Inspection and Tests.
314	Appendix E Sustainable Practices 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 Energy Star. E 201.3 Geothermal. E 201.4 Heating Seasonal Performance Factor (HSPF). E 201.5 Integrated Energy Efficiency Ratio (IEER). E 201.6 Integrated Part-Load Value (IPLV). E 201.7 Maintenance. E 201.8 Minimum Efficiency Reporting Value (MERV). E 201.9 Multi-Occupant Spaces. E 201.10 Recirculation System. E 201.11 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. E 303.0 Abandonment. E 303.1 General. E 401.0 Water Conservation and Efficiency. E 401.1 General. TABLES FORMS
315	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 On-Site Treated Nonpotable Water for Cooling. 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.
316	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 Non-Residential 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. E 502.7 Electric Heating Systems. E 502.7.1 Wall, Floor, or Ceiling Electric-Resistance Heating.
317	E 502.7.2 Electric Central Warm Air Heating. E 502.8 Bath Ceiling Units. E 502.9 HVAC Equipment, Rated Combinations. Table E 502.5 Minimum Pipe Insulation Thickness Table E 502.6 Ventilation Air
318	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. E 503.0 Heating, Ventilation, and Air-Conditioning – Other than Low-Rise Residential Buildings. E 503.1 General. E 503.1.1 New Buildings. Table E 502.9 Minimum Requirements for Non-Federally Covered HVAC Equipment
319	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.
320	E 503.3.2 Climate Zone Determination. E 503.4 Mandatory Provisions.
321	E 503.4.1 Water-Cooled Centrifugal Chilling Packages. E 503.4.1.1 Positive Displacement (air- and water-cooled) Chilling Packages. E 503.4.2 Equipment not Listed.
322	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 Controls. E 503.4.6.1 Dead Band. E 503.4.6.2 Setpoint Overlap Restriction. E 503.4.6.3 Off-Hour Controls.
323	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. E 503.4.6.4 Ventilation System Controls. E 503.4.6.4.1 Shutoff Damper Controls.
324	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 HeatControl. E 503.4.6.7 Humidification and Dehumidification. Table E 503.4.6.4.2 Maximum Damper Leakage (cubic foot per minute per square foot) at 1.0 in. w.g.
325	E 503.4.6.8 Freeze Protection and Snow or Ice Melting Systems. E 503.4.6.9 Ventilation Controls for High-Occupancy Areas. E 503.4.6.10 Outdoor Heating. 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.
326	E 503.4.7.1.2 Piping Insulation. E 503.4.7.1.3 Sensible Heating Panel. E 503.4.7.1.4 Radiant Floor Heating. E 503.4.7.2 Ducts and Plenum Leakage. E 503.4.7.2.1 Duct Leakage Tests. E 503.5 Prescriptive Path.
327	E 503.5.1 Air Economizers. Table E 503.5(1) Minimum Fan-Cooling Unit Size Where an Economizer is Required for Comfort Cooling Table E 503.5(2) Minimum Fan-Cooling Unit Size Where an Economizer is Required for Computer Rooms Table E 503.5(3) Eliminate Required Economizer for Comfort Cooling by Increasing Cooling Efficiency
328	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. E 503.5.2 Water Economizers. E 503.5.2.1 Maximum Pressure Drop. E 503.5.3 Integrated Economizer Control. Table E 503.5.1.2 High-Limit Shutoff Control Settings for Air Economizers
329	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. Table E 503.5.2 Water Economizer Sizing Dry-Bulb and Wet-Bulb Requirements for Computer Rooms
330	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 ChangeoverSystem. E 503.5.5.2.3 Hydronic (Water Loop) Heat Pump Systems.
331	E 503.5.5.3 Dehumidification. E 503.5.5.4 Humidifier Preheat. E 503.5.6 Air System Design and Control. E 503.5.6.1 Fan System Power and Efficiency. E 503.5.6.1.1 Motor Nameplate Horsepower.
332	E 503.5.6.2 Fan Airflow Control. Table E 503.5.6.1(1) Fan Power Limitation Table E 503.5.6.1(2) Fan Power Limitation Pressure Drop Adjustment
333	E 503.5.6.2.1 VAV Static Pressure Sensor Location. E 503.5.6.2.2 Setpoint Reset. E 503.5.6.3 Multiple-Zone VAV System Ventilation Optimization Control. E 503.5.6.4 Supply Air Temperature Reset Controls. Table E 503.5.6.2 Effective Dates for Fan Control
334	E 503.5.6.5 Fractional Horsepower Fan Motors. E 503.5.7 Hydronic System Design and Control. Table E 503.5.6.5(1) Minimum Average Full-Load Efficiency for Polyphase Small Electric Motors Table E 503.5.6.5(2) Minimum Average Full-Load Efficiency for Capacitor-Start Capacitor-Run and Capacitor-Start Induction-Run Small Electric Motors
335	E 503.5.7.1 Hydronic Variable Flow Systems. E 503.5.7.2 Chiller and Boiler Isolation. 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. Table E 503.5.7 Boiler Turndown
336	E 503.5.8 Heat Rejection Equipment. E 503.5.8.1 Fan Speed Control. E 503.5.9 Limitation on Centrifugal Fan Open-Circuit Cooling Towers. E 503.5.10 Exhaust Air Energy Recovery. Table E 503.5.7.5 Piping System Design Maximum Flow Rate (gallons per minute)
337	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. Table E 503.5.10(1) Exhaust Air Energy Recovery Requirements for Ventilation Systems Operating Less than 8000 Hours Per Year Table E 503.5.10(2) Exhaust Air Energy Recovery Requirements for Ventilation Systems Operating Not Less than 8000 Hours Per Year
338	E 503.5.11 Exhaust Systems. E 503.5.11.1 Kitchen Exhaust Systems. E 503.5.11.1.1 Conditioned Supply Air. E 503.5.11.2 Exhaust Flow Rate. E 503.5.11.2.1 Kitchen or Dining Facility. E 503.5.11.2.2 Performance Testing. E 503.5.11.3 Laboratory Exhaust Systems. Table E 503.5.11.2 Maximum Net Exhaust Flow Rate, CFM Per Linear Foot of Hood Length
339	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. E 503.6.3 Manuals. Table E 503.5.13 Hot Gas Bypass Limitation
340	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.
341	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. E 505.0 Geothermal Systems. E 505.1 Applicability. E 505.1.1 Design, Installation, and Testing. Table E 503.8.1 Power Usage Effectiveness (PUE) Maximum
342	Table E 503.7.1(1) Electrically Operated Unitary Air Conditioners and Condensing Units Minimum Efficiency Requirements
344	Table E 503.7.1(2) Electrically Operated Unitary and Applied Heat Pumps Minimum Efficiency Requirements
346	Table E 503.7.1(3) Water Chilling Packages – Efficiency Requirements
347	Table E 503.7.1(4) Electrically Operated Packaged Terminal Air Conditioners, Packaged Terminal, Heat Pumps, Single-Packed Vertical Air Conditioners, Single-Package Vertical Heat Pumps, Room Air Conditioners, and Room Air Conditioner Heat Pumps – Minimum Efficiency Requirements
349	Table E 503.7.1(5) Warm Air Furnaces and Combination Warm Air Furnaces/Air-Conditioning Units, Warm Air Duct Furnaces and Unit Heaters
350	Table E 503.7.1(6) Gas and Oil-Fired Boilers, Minimum Efficiency Requirements
351	Table E 503.7.1(7) Performance Requirements for Heat Rejection Equipment
352	Table E 503.7.1(8) Heat Transfer Equipment Table E 503.7.1(9) Electrically Operated Variable-Refrigerant-Flow Air Conditioners-Minimum Efficiency Requirements
353	Table E 503.7.1(10) Electrically Operated Variable Refrigerant-Flow Air-to-Air and Applied Heat Pumps Minimum Efficiency Requirements
354	Table E 503.7.1(11) Air Conditioners and Condensing Units Serving Computer Rooms
355	Table E 503.7.1(12) Commerical Refrigerator and Freezer Table E 503.7.1(13) Commercial Refrigeration-Minimum Efficiency Requirements
356	Table E 503.7.2(1) Minimum Duct Insulation R-Value for Cooling and Heating Only Supply Ducts and Return Ducts
357	Table E 503.7.2(2) Minimum Duct Insulation R-Value for Combined Heating and Cooling Supply Ducts and Return Ducts 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)
358	E 505.1.2 Heat Pump Approval. E 505.2 Ground Source Heat Pump-Loop Systems. E 505.3 Material Rating. E 505.4 Used Materials. E 505.5 Piping and Tubing Materials Standards. E 505.6 Fittings. E 506.0 Joints and Connections. E 506.1 Approval. Table E 503.7.3(2) Minimum Pipe Insulation Thickness for Cooling Systems (Chilled Water, Brine, and Refrigerant) Table E 505.5 Plastic Ground Source Loop Piping
359	E 506.2 Joints Between Various Materials. E 506.3 Preparation of Pipe Ends. E 506.4 Joint Preparation and Installation. E 506.5 Mechanical Joints. E 506.6 Thermoplastic Welded Joints. E 506.7 CPVC Plastic Pipe. E 506.7.1 Threaded Joints. E 506.7.2 Solvent Cement. E 506.8 Cross-Linked Polyethylene (PEX) Plastic Tubing. E 506.8.1 Compression-Type Fittings. E 506.8.2 Plastic-to-Metal Connections. E 506.9 Polyethylene Plastic Pipe and Tubing. E 506.9.1 Heat-Fusion Joints. E 506.9.2 Electrofusion Joints. E 506.9.3 Stab-Type Insert Fittings. E 506.10 Polypropylene (PP) Plastic. E 506.10.1 Heat-Fusion Joints. E 506.10.2 Mechanical and Compression Sleeve Joints. Table E 505.6 Ground Source Loop Pipe Fittings
360	E 506.11 Raised Temperature Polyethylene (PE-RT) Plastic Tubing. E 506.11.1 Compression-Type Fittings. E 506.11.2 PE-RT-to-Metal Connections. E 506.12 PVC Plastic Pipe. E 506.12.1 Solvent Cement Joints. E 506.12.2 Threaded Joints. E 507.0 Valves. E 507.1 Where Required. E 507.2 Heat Exchangers. E 507.3 Central Systems. E 507.4 Pressure Vessels. E 507.5 Pressure-Reducing Valves. E 507.6 Equipment and Appliances. E 507.7 Expansion Tanks. E 507.8 Reduced Pressure. E 508.0 Installation. E 508.1 General. E 508.2 Protection of Potable Water. E 508.3 Pipe Penetrations. E 508.4 Clearance from Combustibles. E 508.5 Contact with Building Material. E 508.6 Strains and Stresses. E 508.7 Flood Hazard. E 508.8 Pipe Support. E 508.9 Velocities. E 508.10 Labeling and Marking. E 508.11 Chemical Compatibility.
361	E 508.12 Transfer Fluid. E 509.0 Testing. E 509.1 Ground Source Heat Pump Loop System Testing. E 509.2 Pressurizing During Installation. 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. E 603.1.2 Indoor Air Quality After Construction. E 603.1.3 Covering of Duct Openings and Protection of Mechanical Equipment During Construction.
362	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 Whole-Building Ventilation. E 605.1.3.1 Total Ventilation Rate. Table E 605.1.3.1 Ventilation Air Requirements, (cubic foot per minute)
363	E 605.1.3.2 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 Intermittent Mechanical Ventilation. E 605.1.7.1 Intermittent Ventilation. E 605.1.7.2 Extended-Cycle Intermittent Ventilation. Table E 605.1.7.2 Mechanical Ventilation Effectiveness (ε) for Intermittent Fans
364	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.
365	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.
366	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.
367	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.
368	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.
369	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.
370	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.
371	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. E 805.8 Valve Leakage (Form MECH-8A).
372	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). E 805.10.1 Test Procedure.
373	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.
374	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.
375	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). E 805.14.1 Test Procedure. E 805.14.1.1 Construction Inspection.
376	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.
377	E 805.15.1.2 Functional Testing. E 805.15.2 Acceptance Criteria. E 806.0 Certificate of Acceptance Forms. E 806.1 General.
378	MECH-2A
381	MECH-3A
384	MECH-4A
387	MECH-5A
390	MECH-6A
393	MECH-7A
395	MECH-8A
397	MECH-9A
399	MECH-10A
402	MECH-11A
404	MECH-12A
407	MECH-13A
411	MECH-14A
414	MECH-15A
418	Appendix F Sizing of Venting Systems and Outdoor Combustion and Ventilation Opening Design F 101.0 General. F 101.1 Examples Using Single Appliance Venting Tables. TABLES FIGURES Figure F 101.1(1) Type B Double-Wall Vent System Serving a Single Appliance with a Type B Double-Wall Vent Figure F 101.1(2) Type B Double-Wall Vent System Serving a Single Appliance with a Single-Wall Metal Vent Connector Figure F 101.1(3) Vent System Serving a Single Appliance with a Masonry Chimney and a Type B Double-Wall Vent Connector Figure F 101.1(4) Vent System Serving a Single Appliance Using a Masonry Chimney and a Single-Wall Metal Vent Connector
419	Figure F 101.1(5) Asbestos Cement Type B or Single-Wall Metal Vent Systems Serving a Single Draft Hood-Equipped Appliance Figure F 101.1(6) Vent System Serving Two or More Appliances with Type B Double-Wall Vent and Type B Double-Wall Vent Connectors Figure F 101.1(7) Vent System Serving Two or More Appliances with Type B Double-Wall Vent and Single-Wall Metal Vent Connectors Figure F 101.1(8) Masonry Chimney Serving Two or More Appliances with Type B Double-Wall Vent Connectors
420	Figure F 101.1(9) Masonry Chimney Serving Two or More Appliances with Single-Wall Metal Vent Connectors Figure F 101.1(10) Asbestos Cement Type B or Single-Wall Metal Vent Systems Serving Two or More Draft Hood-Equipped Appliances Figure F 101.1(11) Use of Manifolded Common Vent Connectors Figure F 101.1(12) Use of Offset Common Vent
421	F 101.1 Example 1: Single Draft Hood-Equipped Appliance. Figure F 101.1(13) Multistory Gas Vent Design Procedure for Each Segment of System Figure F 101.1(14) Principles of Design of Multistory Vents Using Connector and Common Vent Design Tables
422	F 101.2 Example 2: Single Fan-Assisted Appliance. F 101.3 Example 3: Interpolating Between Table Values. F 102.0 Examples Using Common Venting Tables. F 102.1 Example 4: Common Venting Two Draft Hood-Equipped Appliances. Figure F 101.1 Single Draft Hood-Equipped Appliance Example 1 Figure F 101.2 Single Fan-Assisted Appliance Example 2
423	F 102.2 Example 5(a): Common Venting a Draft Hood-Equipped Water Heater with a Fan-Assisted Furnace into a Type B Vent. Figure F 102.1 Common Venting Two Draft Hood-Equipped Appliances Example 4
424	F 102.3 Example 5(b): Common Venting into an Interior Masonry Chimney. F 102.4 Example 5(c): Common Venting into an Exterior Masonry Chimney. Figure F 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)
425	Table F 102.3 Masonry Chimney Liner Dimensions with Circular Equivalents
426	F 103.0 Example of Combination Indoor and Outdoor Combustion Air Opening.
427	Table F 103.0 Standard Method: Required Volume, All Appliances
428	Appendix G Example Calculation of Outdoor Air Rate G 101.0 Example Calculation of Outdoor Air Rate. G 101.1 Example Calculation.
430	Index

Published By	Publication Date	Number of Pages
IAPMO	2015	449


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Standard Title	Uniform Mechanical Code
Published Code	IAPMO
Publication Date	2015
Pages Count	449

IAPMO UMC 2015 2ndPrinting

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