Earlier editions: 2022 2019

507.17 Extra Device or Attachment.

California Plumbing Code (Title 24, Part 5) · 2025 edition · updated 2026-09-10 · California

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

No device or attachment shall be installed on any appliance that could in any way impair the combustion of gas. [NFPA 54:9.1.15]

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▸Contents — California Plumbing Code (Title 24, Part 5)

California Plumbing Code (Title 24, Part 5)

Chapter 1 — GENERAL CODE PROVISIONS
Chapter 2 — DEFINITIONS
Chapter 3 — GENERAL REGULATIONS
Chapter 4 — PLUMBING FIXTURES AND FIXTURE FITTINGS
▸Chapter 5 — WATER HEATERS
Overview
Chapter 6 — WATER SUPPLY AND DISTRIBUTION
Chapter 7 — SANITARY DRAINAGE
Chapter 8 — INDIRECT WASTES
Chapter 9 — VENTS
Chapter 10 — TRAPS AND INTERCEPTORS
Chapter 11 — STORM DRAINAGE
Chapter 12 — FUEL GAS PIPING
Chapter 13 — HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICA…
Chapter 14 — FIRESTOP PROTECTION
Chapter 15 — ALTERNATE WATER SOURCES FOR NONPOTABLE APPLICATIONS
Chapter 16 — NONPOTABLE RAINWATER CATCHMENT SYSTEMS
Chapter 17 — REFERENCED STANDARDS
Appendix A — RECOMMENDED RULES FOR SIZING THE WATER SUPPLY SYS…
Appendix B — EXPLANATORY NOTES ON COMBINATION WASTE AND VENT S…
Appendix C — ALTERNATE PLUMBING SYSTEMS
Appendix D — SIZING STORM WATER DRAINAGE SYSTEMS
Appendix E — MANUFACTURED/MOBILE HOME PARKS AND RECREATIONAL V…
Appendix F — FIREFIGHTER BREATHING AIR REPLENISHMENT SYSTEMS
Appendix G — SIZING OF VENTING SYSTEMS
Appendix H — PRIVATE SEWAGE DISPOSAL SYSTEMS
Appendix I — INSTALLATION STANDARDS
Appendix J — COMBINATION OF INDOOR AND OUTDOOR COMBUSTION AND …
Appendix K — POTABLE RAINWATER CATCHMENT SYSTEMS
Appendix L — SUSTAINABLE PRACTICES
Appendix M — PEAK WATER DEMAND CALCULATOR
Appendix N — IMPACT OF WATER TEMPERATURE ON THE POTENTIAL FOR …
Appendix O — NON-SEWERED SANITATION SYSTEMS
Appendix P — PROFESSIONAL QUALIFICATIONS
Appendix Q — INDOOR HORTICULTURAL FACILITIES
Appendix R — TINY HOUSES
Appendix S — ONSITE STORMWATER TREATMENT SYSTEMS

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