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• G2406.2

  Prohibited Locations

  • No gas appliances in bedrooms, bathrooms, toilet rooms or storage closets, except direct-vent units, vented heaters in large enough rooms, small wall-mounted unvented heaters with ODS (6,000 Btu/h bath, 10,000 bedroom), sealed closets with outdoor air, and dryers in baths with a 100 sq in opening.

  International Residential Code, 2024 · Chapter 24, Fuel GasRead the full text (opens UpCodes in a new tab)

• M2201

  Oil Tanks

  International Residential Code, 2024 · Chapter 22, Special Piping and Storage SystemsRead the full text (opens UpCodes in a new tab)

• G2452.2

  Installation

  • Gas boilers follow instructions, with permanent operating instructions and nameplate attached, controls tested by the installer and a control diagram left.

  International Residential Code, 2024 · Chapter 24, Fuel GasRead the full text (opens UpCodes in a new tab)

• G2418

  Piping Support

  International Residential Code, 2024 · Chapter 24, Fuel GasRead the full text (opens UpCodes in a new tab)

• G2413.4.1

  Longest Length Method

  • Longest length method: size each section by the longest run to the farthest outlet and that section's load.

  International Residential Code, 2024 · Chapter 24, Fuel GasRead the full text (opens UpCodes in a new tab)

• M1302

  Approval

  International Residential Code, 2024 · Chapter 13, General Mechanical System RequirementsRead the full text (opens UpCodes in a new tab)

• M2101.30

  Chemical Compatibility

  • Antifreeze and additives are compatible with the pipe, fittings and equipment.

  International Residential Code, 2024 · Chapter 21, Hydronic PipingRead the full text (opens UpCodes in a new tab)

• M1402

  Central Furnaces

  International Residential Code, 2024 · Chapter 14, Heating and Cooling Equipment and AppliancesRead the full text (opens UpCodes in a new tab)

Searches all 4,276 IRC 2024 sections, 5,532 IBC 2024 sections and defined terms (Chapters 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33 so far) and each city's local rules as they are added. Section numbers and titles from the International Residential Code and International Building Code, 2024 editions, copyrighted by the International Code Council; the IRC's electrical chapters (34 to 43) follow NFPA 70, the National Electrical Code. Requirements are summarized in our words (IRC Chapters 3 to 43, IBC Chapters 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33); read the full text at the link on each result. Local values come from each city's published documents.