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Chapter 18 — REFERENCED STANDARDS

2025 California Mechanical Code (Title 24, Part 4) · 2025 edition · updated 2026-07-27 · California

Italicized text is a California amendment to the model code, as printed in the official publication.

(Matrix Adoption Tables are non-regulatory, intended only as an aid to the code user. See Chapter 1 for state agency authority and building applications.)

Adopting Agency BSC BSC-
CG
SFM HCD DSA OSHPD BSCC DPH AGR DWR CEC CA SL SLC
Adopting Agency BSC BSC-
CG
SFM 1 2 1-AC AC ** SS** ** SS/CC** 1 1R 2 3 4 5 6 6 6 6 6 6 6 6 6
Adopt Entire Chapter X X X X
Adopt Entire Chapter as
amended (amended sections
listed below)
X X X X X X X X X
Adopt only those sections
that are listed below
Chapter/Section
Table 1801.1 X X X X X X X X X X

This state agency does not adopt sections identified with the following symbol: † The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.0.

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1801.0 General.

1801.1 Standards. The standards listed in Table 1801.1 are

referenced in various sections of this code and shall be con sidered part of the requirements of this document. The standards are listed herein by the standard number and effective date, the title, application and the section(s) of this code that

CHAPTER 18

REFERENCED STANDARDS

reference the standard. The application of the referenced standard(s) shall be as specified in Section 302.1.2. The promulgating agency acronym referred to in Table 1801.1 are defined in a list found at the end of the table.

TABLE 1801.1

REFERENCED STANDARDS

«

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REFERENCED STANDARDS

» TABLE 1801.1 (continued) REFERENCED STANDARDS

362 2025 CALIFORNIA MECHANICAL CODE

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REFERENCED STANDARDS

TABLE 1801.1 (continued) « REFERENCED STANDARDS

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REFERENCED STANDARDS

» TABLE 1801.1 (continued) REFERENCED STANDARDS

364 2025 CALIFORNIA MECHANICAL CODE

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REFERENCED STANDARDS

TABLE 1801.1 (continued) « REFERENCED STANDARDS

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REFERENCED STANDARDS

» TABLE 1801.1 (continued) REFERENCED STANDARDS

366 2025 CALIFORNIA MECHANICAL CODE

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REFERENCED STANDARDS

TABLE 1801.1 (continued) « REFERENCED STANDARDS

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REFERENCED STANDARDS

» TABLE 1801.1 (continued) REFERENCED STANDARDS

368 2025 CALIFORNIA MECHANICAL CODE

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REFERENCED STANDARDS

TABLE 1801.1 (continued) « REFERENCED STANDARDS

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REFERENCED STANDARDS

» TABLE 1801.1 (continued) REFERENCED STANDARDS

370 2025 CALIFORNIA MECHANICAL CODE

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REFERENCED STANDARDS

TABLE 1801.1 (continued) « REFERENCED STANDARDS

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REFERENCED STANDARDS

» TABLE 1801.1 (continued) REFERENCED STANDARDS

372 2025 CALIFORNIA MECHANICAL CODE

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REFERENCED STANDARDS

TABLE 1801.1 (continued) « REFERENCED STANDARDS

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REFERENCED STANDARDS

» TABLE 1801.1 (continued) REFERENCED STANDARDS

374 2025 CALIFORNIA MECHANICAL CODE

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REFERENCED STANDARDS

TABLE 1801.1 (continued) « REFERENCED STANDARDS

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REFERENCED STANDARDS

» TABLE 1801.1 (continued) REFERENCED STANDARDS

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REFERENCED STANDARDS

TABLE 1801.1 (continued) « REFERENCED STANDARDS

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REFERENCED STANDARDS

» 1801.2 Standards, Publications, Practices, and Guides. and guides shall be as specified in Section 302.1.2. The prom The standards, publications, practices and guides listed in Table ulgating agency acronyms are found at the end of the table. 1801.2 are not referenced in other sections of this code. The application of the referenced standards, publications, practices

»

TABLE 1801.2

STANDARDS, PUBLICATIONS, PRACTICES, AND GUIDES
DOCUMENT NUMBER DOCUMENT TITLE APPLICATION
ACCA ACCA ACCA
ACCA Manual N-2012 Commercial Load Calculations Ducts
ACCA Manual Q-1990 Low Pressure, Low Velocity Duct System Design Ducts
AHAM AHAM AHAM
AHAM RAC-1-2020 Energy Measurement Test Procedure for Room Air Conditioners Air Conditioners
AHRI AHRI AHRI
AHRI 310/380-2017 Packaged Terminal Air Conditioners and Heat Pumps (Same as CSA C744) Air Conditioners
AHRI 340/360-2019 Performance Rating of Commercial and Industrial Unitary Air-Conditioning
and Heat Pump Equipment
Air-Source Heat Pumps
AHRI 390-2021 Performance Rating of Single Package Vertical Air-Conditioners and Heat
Pumps
Air Conditioners
AHRI 400-2015 Performance Rating of Liquid to Liquid Heat Exchangers Heat Exchangers
AHRI 550/590-2020 Performance Rating of Water-Chilling and Heat Pump Water-Heating Pack-
ages Using the Vapor Compression Cycle
Water-Source Heat Pumps
AHRI 560-2000 Absorption Water Chilling and Water Heating Packages Refrigeration Systems
AHRI 910-2014 Performance Rating of Indoor Pool Dehumidifiers Dehumidifiers
AHRI 920-2020 Performance Rating of Direct Expansion-Dedicated Outdoor Air System Units Air Conditioners
AHRI 1200-2013 Performance Rating of Commercial Refrigerated Display Merchandisers and
Storage Cabinets
Commercial
AHRI 1230-2021 Performance Rating of Variable Refrigerant Flow (VRF) Multi-Split Air-Condi-
tioning and Heat Pump Equipment
Refrigerants
AHRI 1250-2020 Performance Rating of Walk-in Coolers and Freezers Walk-in Coolers and
Freezers
AHRI 1360-2017 Performance Rating of Computer and Data Processing Room Air Conditioners Air Conditioners
AMCA AMCA AMCA
AMCA 208-2018 Calculation of the Fan Energy Index Fan Energy Index
ANSI/AMCA 210-
2016/ASHRAE 51-2016
Laboratory Methods of Testing Fans for Certified Aerodynamic Performance
Rating
Low Power Fans
ANSI/AMCA 220-2021 Laboratory Methods of Testing Air Curtain Units for Aerodynamic Perform-
ance Rating
Air Curtain Units
AMCA 500-D-2018 Laboratory Methods of Testing Dampers for Rating Dampers
ASHRAE ASHRAE ASHRAE
ASHRAE 52.2-2017 Method of Testing General Ventilation Air-Cleaning Devices for Removal
Efficiency by Particle Size
Cleaning Devices
ASHRAE 55-2020 Thermal Environmental Conditions for Human Occupancy Miscellaneous

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REFERENCED STANDARDS

TABLE 1801.2 (continued) « STANDARDS, PUBLICATIONS, PRACTICES, AND GUIDES

DOCUMENT NUMBER DOCUMENT TITLE APPLICATION
ASHRAE 62.2-2022 Ventilation and Acceptable Indoor Air Quality in Residential Buildings Ventilation
ANSI/ASHRAE/IES 90.1-
2019
Energy Standard for Buildings Except Low-Rise Residential Buildings (with
Addenda a and d)
Energy
ASHRAE/IES 90.2-2018 Energy-Efficient Design of Low-Rise Residential Buildings Energy, Dwellings
ASHRAE 90.4-2019 Energy Standard for Data Centers Data Centers
ASHRAE 127-2020 Method of Testing for Rating Air-Conditioning Units Serving Data Center
(DC) and Other Information Technology Equipment (ITE) Spaces
Air Conditioners
ASHRAE 129-1997 (R2002) Measuring Air-Change Effectiveness Air Change Effectiveness
ASHRAE GRP 158-1979 Cooling and Heating Load Calculation Manual Ventilation
ASHRAE 169-2021 Climatic Data for Building Design Standards Miscellaneous
ASHRAE/ACCA 183-
2007 (R2020)
Peak Cooling and Heating Load Calculations in Buildings Except Low-
Rise Residential Buildings
Cooling and Heating
Load, Miscellaneous
ASHRAE Handbook-2020 HVAC Systems and Equipment Design
ASHRAE Indoor Air Quality
Guide
Indoor Air Quality Guide: Best Practices for Design, Construction, and Com-
missioning
Ventilation
ASME ASME ASME
ASME A13.1-2020 Scheme for the Identification of Piping Systems Piping
ASME A112.18.6/CSA
B125.6-2017 (R2021)
Flexible Water Connectors Piping
ASME B1.20.3-1976 (R2018) Dryseal Pipe Threads (Inch) Joints
ASSE ASSE ASSE
ASSE/IAPMO/ANSI Series
12000-2021
Professional Qualifications Standard for Water Management and Infection
Control Risk Assessment for Building Systems
Professional Qualifications
ASSE 12010-2021 Environment of Care, Infection Control and Construction Risk Assessment
Professional Qualification Standard
Professional Qualifications
ASSE 12020-2021 Environment of Care, Infection Control and Construction Risk Assessment
Professional Qualification Standard for Construction and Maintenance
Employers
Professional Qualifications
ASSE 12062-2021 Water Quality Program Professional Qualifications Standard for Pipefitters
and HVAC Technicians
Professional Qualifications
ASSE 12080-2021 Professional Qualifications Standard for Legionella Water Safety and Manage-
ment Specialist
Professional Qualifications
ASSE/IAPMO/ANSI Series
13000-2015 (R2020)
Service Plumber and Residential Mechanical Service Technician Professional
Qualifications Standard
Professional Qualifications
ASSE/IAPMO/ANSI 13020-
2015 (R2020)
Professional Qualifications Standard for the Residential Mechanical Service
Technician
Professional Qualifications
ASSE/IAPMO/ANSI Series
16000-2019
Professional Qualifications Standard for Inspectors and Plans Examiners Professional Qualifications
ASSE/IAPMO/ANSI 16020-
2019
Professional Qualifications Standard for the Mechanical Inspector Professional Qualifications

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REFERENCED STANDARDS

» TABLE 1801.2 (continued) STANDARDS, PUBLICATIONS, PRACTICES, AND GUIDES

DOCUMENT NUMBER DOCUMENT TITLE APPLICATION
ASSE/IAPMO/ANSI 16050-
2019
Professional Qualifications Standard for the Mechanical Plan Examiner Professional Qualifications
ASSE/IAPMO/ANSI Series
19000-2015 (R2020)
Hydronic Systems Professional Qualifications Standard Professional Qualifications
ASSE/IAPMO/ANSI 19110-
2015 (R2020)
Professional Qualifications Standard for the Solar Water Heating System
Installer
Professional Qualifications
ASSE/IAPMO/ANSI 19210-
2015 (R2020)
Professional Qualifications Standard for the Hydronic Heating and Cooling
System Installer
Professional Qualifications
ASSE/IAPMO/ANSI 19220-
2015 (R2020)
Professional Qualifications Standard for the Hydronic Heating and Cooling
System Designer
Professional Qualifications
ASTM ASTM ASTM
ASTM A568/A568M-2019a Standard Specification for Steel, Sheet, Carbon, Structural, and High-Strength,
Low-Alloy, Hot-Rolled and Cold-Rolled, General Requirements for
Piping
ASTM A653/A653M-2020 Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron
Alloy-Coated (Galvannealed) by the Hot-Dip Process
Piping, Ferrous
ASTM A733-2016 Standard Specification for Welded and Seamless Carbon Steel and Austenitic
Stainless Steel Pipe Nipples
Piping, Ferrous
ASTM B370-2012 (R2019) Standard Specification for Copper Sheet and Strip for Building Construction Miscellaneous
ASTM B687-1999 (R2016) Standard Specification for Brass, Copper, and Chromium-Plated Pipe Nipples Piping, Copper Alloy
ASTM C518-2021 Standard Test Method for Steady-State Thermal Transmission Properties by
Means of the Heat Flow Meter Apparatus
Certification: Calibration,
Error Analysis, Heat Flow
Meter Apparatus, Heat
Flux, Instrument Verifica-
tion, Thermal Conductiv-
ity, Thermal Resistance,
Thermal Testing, Tunnel
Test
ASTM D93-2020 Standard Test Method for Flash Point by Pensky-Martens Closed Cup Tester Certification
ASTM D396-2021 Standard Specification for Fuel Oils Boiler
ASTM D2517-2018 Standard Specification for Reinforced Epoxy Resin Gas Pressure Pipe and Fit-
tings
Piping, Plastic
ASTM E96/E96M-2016 Standard Test Method for Water Vapor Transmission of Materials Miscellaneous
ASTM E136-2019a Standard Test Method for Assessing Combustibility of Materials Using a Ver-
tical Tube Furnace at 750°C
Furnace
AWS AWS AWS
AWS B2.4-2012 Welding Procedure and Performance Qualification for Thermoplastics Joints, Certification
CFR CFR CFR
10 CFR 430 Energy Conservation Program for Consumer Products Energy Conservation
10 CFR 431 Energy Efficiency Program for Certain Commercial and Industrial Equipment Energy Efficiency
10 CFR 431.62 Definitions Concerning Commercial Refrigerators, Freezers and Refrigerator-
Freezers
Commercial Refrigerators,
Freezers and Refrigerator-
Freezers
10 CFR 431.86 Uniform Test Method for the Measurement of Energy Efficiency of Commer-
cial Packaged Boilers
Boilers

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REFERENCED STANDARDS

TABLE 1801.2 (continued) « STANDARDS, PUBLICATIONS, PRACTICES, AND GUIDES

DOCUMENT NUMBER DOCUMENT TITLE APPLICATION
10 CFR 431.302 Definitions Concerning Walk-In Coolers and Walk-In Freezers Walk-in Coolers and
Freezers
29 CFR 1910.134 Respiratory Protection Respiratory Protection
49 CFR 192 Transportation of Natural and Other Gas by Pipeline: Minimum Federal Safety
Standards
Gas Piping
49 CFR 192.123 Design Limitations for Plastic Pipe Piping, Plastic
CGSB CGSB CGSB
CAN/CGSB 149.10-2019 Determination of the Airtightness of Building Envelopes by the Fan Depres-
surization Method
Ventilation
CSA CSA CSA
ANSI Z21.12b-1994 (R2020) Draft Hoods Fuel Gas, Appliances
ANSI Z21.17a-2008/(R2019)
/CSA 2.7a-2008 (R2019)
Domestic Gas Conversion Burners Conversion Burner Instal-
lation, Gas Burners
ANSI Z21.20-2014
(R2019)/CAN/CSA-C22.2
No. 60730-2-5-2014
(R2019)
Automatic Electrical Controls for Household and Similar Use – Part 2-5:
Particular Requirements for Automatic Electrical Burner Control Systems
Automatic Ignition, Gas
Ignition, Ignition
CSA/ANSI Z21.21-
2019/CSA 6.5-2019
Automatic Valves for Gas Appliances Appliance Valves, Auto-
matic Gas Valves, Valves
CSA Z21.40.1a-
1997/CGA 2.91a-M97
(R2017)
Gas-Fired, Heat Activated Air-Conditioning and Heat Pump Appliances Gas Fired Air Condi-
tioning, Gas Fired Heat
Pump
CSA/ANSI Z21.42-2013
(R2018)
Gas-Fired Illuminating Appliances Illuminating Appliances
ANSI Z21.66-2015/(R2020)
/CSA 6.14-2015 (R2020)
Automatic Damper Devices for Use with Gas-Fired Appliances Vent Dampers, Automatic
Dampers
CSA Z21.71a-2005
(R2016)
Automatic Intermittent Pilot Ignition Systems for Field Installation Automatic Pilot Ignition,
Pilot Ignition
IAPMO IAPMO IAPMO
ASSE/IAPMO/ANSI Series
16000-2019
Professional Qualifications Standard for Inspectors and Plans Examiners Professional Qualifications
ASSE/IAPMO/ANSI Series
13000-2015 (R2020)
Service Plumber and Residential Mechanical Service Technician Professional
Qualifications Standard
Professional Qualifications
ASSE/IAPMO/ANSI Series
19000-2015 (R2020)
Hydronic Systems Professional Qualifications Standard Professional Qualifications
ASSE/IAPMO/ANSI Series
12000-2021
Professional Qualifications Standard for Water Management and Infection
Control Risk Assessment for Building Systems
Professional Qualifications
IAPMO IGC 293-2012
(R2020)
Tubing and Fittings for Special Hydronic Radiant Drywall Panels HVAC, Fittings, Tubing
IAPMO IGC 315-2016 Water Manifold Systems Fittings
IAPMO IGC 327-2016 Flexible Metallic Expansion Joints for Pressure Systems Joints
IAPMO IGC 332-2017a Hydronic Radiators Miscellaneous
IAPMO PS 120-2019 Flashing and Stand Combination for Air Conditioning Units (Residential or
Commercial Unit Curb)
Air Conditioning Flashing
Stand
IES IES IES
ANSI/ASHRAE/IES 90.1-
2019
Energy Standard for Buildings Except Low-Rise Residential Buildings (with
Addenda a and d)
Energy

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» TABLE 1801.2 (continued) STANDARDS, PUBLICATIONS, PRACTICES, AND GUIDES

DOCUMENT NUMBER DOCUMENT TITLE APPLICATION
MSS MSS MSS
MSS SP-67-2017 Butterfly Valves Valves
MSS SP-80-2019 Bronze Gate, Globe, Angle, and Check Valves Valves
MSS SP-104-2018 Wrought Copper Solder-Joint Pressure Fittings Fittings
MSS SP-106-2019 Cast Copper Alloy Flanges and Flanged Fittings: Class 125, 150, and 300 Fittings
MSS SP-109-2018 Weld-Fabricated Copper Solder-Joint Pressure Fittings Fittings
NFPA NFPA NFPA
NFPA 30-2021 Flammable and Combustible Liquids Code Combustible Liquids,
Flammable Liquids
NFPA 55-2020 Compressed Gases and Cryogenic Fluids Code Compressed Gases
NFPA 91-2020 Standard for Exhaust Systems for Air Conveying of Vapors, Gases, Mists, and
Particulate Solids
Product Conveying Ducts
NFPA 96-2021 Standard for Ventilation Control and Fire Protection of Commercial Cooking
Operations
Commercial Cooking
NFPA 221-2021 Standard for High Challenge Fire Walls, Fire Walls, and Fire Barrier Walls Building Fire Walls, Fire
Barrier
NFPA 259-2018 Standard Test Method for Potential Heat of Building Materials Testing, Building Mate-
rials
NFPA 274-2018 Standard Test Method to Evaluate Fire Performance Characteristics of Pipe
Insulation
Pipe Insulation
NFPA 400-2019 Hazardous Materials Code Hazardous Materials
NFPA 501A-2021 Standard for Fire Safety Criteria for Manufactured Home Installations, Sites,
and Communities
Miscellaneous
NFPA 704-2017 Standard System for the Identification of the Hazards of Materials for Emer-
gency Response
Hazardous Materials
NFPA 2001-2018 Clean Agent Fire Extinguishing Systems Fire Extinguishing
NFPA 5000-2021 Building Construction and Safety Code Miscellaneous
SAE SAE SAE
SAE J512-1997 Automotive Tube Fittings Fittings
SMACNA SMACNA SMACNA
SMACNA-2008 IAQ Guidelines for Occupied Buildings Under Construction, 2ndEdition Ventilation
UL UL UL
UL 21-2014 LP-Gas Hose (with revisions through July 28, 2017) Hose, LPG Hose
UL 33-2021 Heat Responsive Links for Fire-Protection Service Fusible Links
UL 51-2013 Power-Operated Pumps and Bypass Valves for Anhydrous Ammonia, LP-
Gas, and Propylene (with revisions through October 5, 2018)
Ammonia Pumps, LP-
Gas Pumps, Pumps
UL 80-2007 Steel Tanks for Oil-Burner Fuels and Other Combustible Liquids (with revi-
sions through April 26, 2019)
Fuel Gas

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REFERENCED STANDARDS

TABLE 1801.2 (continued) « STANDARDS, PUBLICATIONS, PRACTICES, AND GUIDES

DOCUMENT NUMBER DOCUMENT TITLE APPLICATION
UL 125-2020 Flow Control Valves for Anhydrous Ammonia and LP-Gas (with revisions
through August 26, 2021)
Fuel Gas
UL 132-2021 Safety Relief Valves for Anhydrous Ammonia and LP-Gas Fuel Gas
UL 144-2021 LP-Gas Regulators (with revisions through August 26, 2021) Fuel Gas
UL 174-2004 Household Electric Storage Tank Water Heaters (with revisions through Decem-
ber 16, 2021)
Appliances
UL 180-2021 Combustible Liquid Tank Accessories (with revisions through August 25,
2021)
Gauges, Level Gauges
UL 252-2017 Compressed Gas Regulators (with revisions through August 10, 2018) Fuel Gas
UL 268-2016 Smoke Detectors for Fire Alarm Systems (with revisions through October 31,
2019)
Smoke Detectors
UL 343-2008 Pumps for Oil-Burning Appliances (with revisions through December 6, 2021) Fuel Gas, Appliances
UL 353-1994 Limit Controls (with revisions through November 8, 2011) Controls
UL 404-2010 Gauges, Indicating Pressure, for Compressed Gas Service (with revisions
through February 11, 2015)
Fuel Gas
UL 429-2013 Electrically Operated Valves (with revisions through March 19, 2021) Valves
UL 443-2006 Steel Auxiliary Tanks for Oil-Burner Fuel (with revisions through May 31,
2018)
Fuel Gas
UL 521-1999 Heat Detectors for Fire Protective Signaling Systems (with revisions through
November 18, 2020)
Heat Detectors
UL 525-2008 Flame Arresters (with revisions through October 13, 2017) Flame Arrestors
UL 565-2013 Liquid-Level Gauges for Anhydrous Ammonia and LP-Gas (with revisions
through February 23, 2018)
Fuel Gas
UL 569-2013 Pigtails and Flexible Hose Connectors for LP-Gas (with revisions through July
28, 2017)
Fuel Gas
UL 732-2018 Oil-Fired Storage Tank Water Heaters (with revisions through August 9, 2018) Fuel Gas, Appliances
UL 733-2019 Oil-Fired Air Heaters and Direct-Fired Heaters Water Heaters, Direct
Fired, Oil Fired
UL 842-2020 Valves for Flammable Fluids and Combustible Liquids (with revisions through
October 27, 2017)
Valves
UL 1389-2019 Plant Oil Extraction Equipment for Installation and Use in Ordinary (Unclas-
sified) Locations and Hazardous (Classified) Locations (with revisions
through October 13, 2020)
Plant Oil Extraction
UL 1453-2016 Electric Booster and Commercial Storage Tank Water Heaters (with revisions
through May 18, 2018)
Appliances
UL 1746-2007 External Corrosion Protection Systems for Steel Underground Storage Tanks
(with revisions through December 19, 2014)
Tanks
UL 2017-2008 General-Purpose Signaling Devices and Systems (with revisions through
December 14, 2018)
Signaling Devices
UL 2075-2013 Gas and Vapor Detectors and Sensors (with revisions through December 21,
2017)
Gas Detectors
UL 8800-2019 Horticultural Lighting Equipment and Systems Electrical

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REFERENCED STANDARDS

ABBREVIATIONS IN TABLE 1801.1 AND TABLE 1801.2

AABC Associated Air Balance Council, 1220 19th Street NW, Suite 410, Washington, DC 20036.

ACCA Air Conditioning Contractors of America Association, Inc., 2800 S Shirlington Road, Suite 300, Arlington, VA 22206.

AHAM Association of Home Appliance Manufacturers, 1111 19th Street, NW, Suite 402, Washington, DC 20036.

AHRI Air-Conditioning, Heating, and Refrigeration Institute, 2311 Wilson Boulevard, Suite 400, Arlington, VA 22201.

AMCA Air Movement and Control Association, 30 West University Drive, Arlington Heights, IL 60004-1806.

ANSI American National Standards Institute, Inc., 25 W. 43rd Street, 4th Floor, New York, NY 10036.

ASHRAE American Society of Heating, Refrigerating, and Air Conditioning Engineers, Inc., 1791 Tullie Circle, NE, Atlanta, GA 30329-2305.

ASME American Society of Mechanical Engineering, Two Park Avenue, New York, NY 10016-5990.

ASSE American Society of Sanitary Engineering, 18927 Hickory Creek Drive, Suite 220, Mokena, IL 60448.

ASSP American Society of Safety Professionals, 520 N. Northwest Highway, Park Ridge, IL 60068.

ASTM ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.

AWS American Welding Society, 8669 NW 36 Street, #130, Miami, FL 33166-6672.

AWWA American Water Works Association, 6666 W. Quincy Avenue, Denver, CO 80235.

CFR Code of Federal Regulations, U.S Government Publishing Office, 723 North Capitol Street, N.W. Washington, DC 20401-001.

CGA Canadian Gas Association, 243 Consumers Road, Suite 1200, North York, Ontario, Canada M2J 5E3.

CGSB Canadian General Standards Board, 140 O’Connor Street, L’Esplanade Laurier Building, 6th floor East Tower, Ottawa, Ontario, Canada K1A 0R5.

CSA Canadian Standards Association, 178 Rexdale Boulevard, Toronto, Ontario, Canada M9W 1R3.

e1 An editorial change since the last revision or reapproval.

IAPMO International Association of Plumbing and Mechanical Officials, 4755 E. Philadelphia Street, Ontario, CA 91761.

IES Illuminating Engineering Society, 120 Wall St. Fl 17, New York, NY 10005-4026.

IEST Institute of Environmental Sciences and Technology, 1827 Walden Office Square, Suite 400, Schaumburg, IL 60173.

IGSHPA International Ground Source Heat Pump Association, 1723 W. Tyler Ave. Stillwater, OK 74078.

IIAR International Institute of Ammonia Refrigeration, 1001 N. Fairfax Street, Suite 503, Alexandria, VA 22314.

ISO International Organization for Standardization, 1 ch. de la Voie-Creuse, Casa Postale 56, CH-1211 Geneva 20, Switzerland.

MSS Manufacturers Standardization Society of the Valve and Fittings Industry, 127 Park Street NE, Vienna, VA 22180.

NAIMA North American Insulation Manufacturers Association, Inc., 11 Canal Center Plaza #103, Alexandria, VA 22314.

NEBB National Environmental Balancing Bureau, 8575 Grovemont Circle, Gaithersburg, MD 20877.

NFPA National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02169-7471.

NGWA National Ground Water Association, 601 Dempsey Road, Westerville, Ohio 43081-8978.

NSF NSF International, 789 N. Dixboro Road, Ann Arbor, MI 48105.

SAE Society of Automotive Engineers, 400 Commonwealth Drive, Warrendale, PA 15096.

SMACNA Sheet Metal and Air Conditioning Contractors National Association, 4201 Lafayette Center Drive, Chantilly, VA 20151-1219.

UL Underwriters Laboratories, Inc., 333 Pfingsten Road, Northbrook, IL 60062.

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APPENDICES

The appendices are intended to supplement the provisions of the installation requirements of this code. The definitions in Chapter 2 are also applicable to the appendices.

TABLE OF CONTENTS

»

»

Appendix A Page

Appendix B

Appendix C

Appendix D

Appendix E

Appendix F

Appendix G

Appendix H

Appendix I

Appendix J

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