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Chapter 9 — INSTALLATION OF SPECIFIC APPLIANCES

931.2 Installation. Kilns shall be installed in accordance

California Mechanical Code (Title 24, Part 4) · 2019 edition · updated 2026-09-10 · California

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

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▸Contents — California Mechanical Code (Title 24, Part 4)
California Mechanical Code (Title 24, Part 4)
  1. Chapter 1 — GENERAL CODE PROVISIONS
  2. Chapter 2 — DEFINITIONS
  3. Chapter 3 — GENERAL REGULATIONS
  4. Chapter 4 — VENTILATION AIR
  5. Chapter 5 — EXHAUST SYSTEMS
  6. Chapter 6 — DUCT SYSTEMS
  7. Chapter 7 — COMBUSTION AIR
  8. Chapter 8 — CHIMNEYS AND VENTS
  9. ▸Chapter 9 — INSTALLATION OF SPECIFIC APPLIANCES
    Overview
    1. 901.1 Applicability. 901.0 General. This chapter addresses req…
    2. 902.1 Nonindustrial Appliance. 902.0 General. This chapter is …
    3. 902.3 Added or Converted Appliances. When additional or replac…
    4. 902.4 Type of Gas(es). The appliance shall be connected
    5. 902.6 Fuel Input Rate. The fuel input rate to the appliance
    6. 902.7 Use of Air or Oxygen Under Pressure. Where
    7. 902.8 Building Structural Members. Appliances and
    8. 902.9 Flammable Vapors. Appliances shall not be
    9. 902.10 Solid-Fuel Burning Appliances. Unless otherwise specifi…
    10. 902.11 Combination of Appliances and Equipment. A
    11. 902.12 Protection of Gas Appliances from Fumes orGases Other t…
    12. 902.13 Process Air. In addition to air needed for combustion i…
    13. 902.14 Gas Appliance Pressure Regulators. Where the
    14. 902.16 Bleed Lines for Diaphragm-Type Valves. Bleed
    15. 903.2 Gas-Fired Air Conditioners and Heat Pumps. Gas-fired air…
    16. 904.2 Clearance. Central heating furnaces and low-pressure boi…
    17. 904.0 Central Heating Boilers and Furnaces.904.1 Location. Cen…
    18. 904.3 Assembly and Installation. A central-heating
    19. 904.4 Temperature- or Pressure-Limiting Devices.
    20. 904.5 Low-Water Cutoff. All water boilers and steam boilers sh…
    21. 904.6 Steam Safety and Pressure-Relief Valves.
    22. 904.7 Furnace Plenums and Air Ducts. Furnace
    23. 904.8 Refrigeration Coils. The installation of refrigeration c…
    24. 904.10 Furnace (Upright and Horizontal). Upright furnaces shal…
    25. 904.11 Solid-Fuel-Fired Furnaces. Factory-built solidfuel-fire…
    26. 904.12 Oil-Fired Central Furnaces. Oil-fired central furnaces …
    27. 904.13 Commercial or Industrial Gas Heaters. Commercial or ind…
    28. 904.14 Electric Central Furnaces. Electric central heating fur…
    29. 905.0 Duct Furnaces.905.1 Clearances. The installation of duct…
    30. 904.9 Cooling Units Used with Heating Boilers. Boilers, where …
    31. 905.2 Installation of Duct Furnaces. Duct furnaces shall
    32. 905.3 Access Panels. The ducts connected to duct furnaces shal…
    33. 905.4 Location of Draft Hoods and Controls. The controls, comb…
    34. 905.5 Circulating Air. Where a duct furnace is installed so
    35. 906.5 Bracing. The space provided for the furnace shall be
    36. 906.6 Support. Means shall be provided to support the furnace …
    37. 906.7 Clearance. The lowest portion of the floor furnace shall
    38. 906.0 Floor Furnaces.906.1 Installation. The installation of f…
    39. 905.7 Installation in Commercial Garages and Air-craft Hangars…
    40. 905.8 Electric Duct Heaters. Electric duct heaters installed
    41. 906.2 Temperature Limit Controls. Floor furnaces shall
    42. 906.3 Combustion and Circulating Air. Combustion and
    43. 906.4 Placement. The following provisions apply to furnaces th…
    44. 906.8 Access. The space in which a floor furnace is
    45. 906.9 Seepage Pan. Where the excavation exceeds 12 inches
    46. 906.10 Wind Protection. Floor furnaces shall be protected,
    47. 906.11 Upper-Floor Installations. Listed floor furnaces
    48. 906.12 First Floor Installation. Listed floor furnaces
    49. 906.13 Oil-Fired Floor Furnaces. Oil-fired floor furnaces
    50. 907.1 Installation. 907.0 Wall Furnaces. Listed wall furnaces …
    51. 907.2 Location. Wall furnaces shall be located so as not to
    52. 907.3 Combustion and Circulating Air. Combustion and
    53. 907.4 Oil-Fired Wall Furnaces. Oil-fired wall furnaces
    54. 908.2 Gas-Fired Clothes Dryers. Gas-fired clothes dryers shall…
    55. 910.2 Gas Burners. Commercial gas burners shall comply
    56. 911.2 Installation. A decorative appliance for installation
    57. 911.3 Fireplace Screens. A fireplace screen shall be installed
    58. 912.0 Gas Fireplaces, Vented.
    59. 912.3 Combustion and Circulating Air. Combustion and
    60. 913.2 Fireplace Stoves. Fireplace stoves shall comply
    61. 913.3 Fireplace Accessories. Heat exchangers, glass
    62. 914.2 Prohibited Installations. Non-recirculating direct
    63. 914.3 Installation. Non-recirculating direct gas-fired industr…
    64. 914.4 Clearance from Combustible Materials. Nonrecirculating d…
    65. 914.5 Air Supply. All air to the non-recirculating direct gasf…
    66. 914.6 Atmospheric Vents, Gas Reliefs, or Bleeds.
    67. 914.7 Relief Openings. The design of the installation shall
    68. 914.8 Purging. Inlet ducting, where used, shall be purged
    69. 915.2 Prohibited Installations. Recirculating direct gasfired …
    70. 915.3 Installation. Installation of direct gas-fired industrial
    71. 915.6 Atmospheric Vents, Gas Reliefs, or Bleeds. Recirculating…
    72. 915.7 Relief Openings. The design of the installation shall
    73. 915.8 Purging. Inlet ducting, where used, shall be purged
    74. 916.2 Gas-Fired Room Heaters. Gas-fired room heaters
    75. 915.4 Clearance from Combustible Materials. Recirculating dire…
    76. 915.5 Air Supply. Ventilation air to the recirculating direct
    77. 917.2 Clearance. Suspended-type unit heaters shall comply
    78. 917.3 Combustion and Circulating Air. Combustion and
    79. 917.4 Ductwork. A unit heater shall not be attached to a warm
    80. 917.5 Installation in Commercial Garages and Air-craft Hangars…
    81. 917.6 Oil-Fired Unit Heaters. Oil-fired unit heaters shall
    82. 916.3 Solid-Fuel-Type Room Heaters. Solid-fuel type
    83. 918.1 Clearance for Listed Appliances. 918.0 Food Service Appl…
    84. 918.2 Clearance for Unlisted Appliances. Unlisted floormounted…
    85. 918.3 Mounting on Combustible Floors. Listed floormounted food…
    86. 918.4 Installation on Noncombustible Floors. Listed
    87. 918.5 Combustible Material Adjacent to CookingTop. Listed and …
    88. 918.6 Use with Casters. Floor-mounted appliances with
    89. 918.7 Level Installation. Floor-mounted food service
    90. 918.8 Ventilation. Means shall be provided to ventilate the
    91. 919.2 Clearance for Listed Appliances. Listed food
    92. 919.3 Clearance for Unlisted Appliances. Unlisted food
    93. 919.4 Mounting of Unlisted Appliances. Unlisted food
    94. 920.4 Built-In Units. Built-in units shall be installed in
    95. 920.1 Electric Household Cooking Appliances.920.0 Household Co…
    96. 920.3 Floor-Mounted Units. Floor mounted units shall be
    97. 924.1 Clearances for Listed Appliances. 924.0 Illuminating App…
    98. 924.2 Clearances for Unlisted Appliances. Clearances
    99. 922.4 Commercial Units. Commercial open-top broiler
    100. 923.2 Unlisted Units. Unlisted outdoor cooking appliances
    101. 921.1 Commercial Electric Ranges.921.0 Cooking Appliances List…
    102. 921.2 Commercial Wood-Fired Baking Ovens. Commercial wood-fire…
    103. 921.3 Oil-Burning Ranges. Oil-burning ranges shall comply with…
    104. 922.2 Unlisted Units. Unlisted open-top broiler units shall
    105. 922.3 Protection Above Domestic Units. Domestic
    106. 926.2 Clearance. The installation of infrared heaters shall
    107. 926.3 Combustion and Ventilation Air. Where unvented
    108. 926.4 Installation in Commercial Garages and Air-craft Hangars…
    109. 927.1 Location.927.0 Pool Heaters. A pool heater shall be loca…
    110. 927.2 Clearance. The installation of pool heaters shall comply…
    111. 924.3 Mounting on Buildings. Illuminating appliances
    112. 924.4 Mounting on Posts. Illuminating appliances
    113. 924.5 Appliance Pressure Regulators. Where an appliance pressu…
    114. 925.2 Factory-Built Commercial Crematories. Factory-built comm…
    115. 925.3 Residential Incinerators. Residential incinerators
    116. 926.1 Support. 926.0 Infrared Heaters. Suspended-type infrared…
    117. 927.3 Temperature or Pressure-Limiting Devices. An unlisted po…
    118. 931.2 Installation. Kilns shall be installed in accordance
    119. 931.3 Fuel-Gas Controls. Fuel-gas controls shall comply
    120. 931.4 Electrical Equipment. All electrical equipment used
    121. 931.5 Installations Inside Buildings. In addition to other
    122. 927.4 Bypass Valves. Where an integral bypass system is
    123. 927.5 Venting. A pool heater listed for outdoor installation
    124. 928.1 Clearance. Refrigerators shall be provided with
    125. 928.2 Venting or Ventilating Kits Approved for Use
    126. 929.2 Installation on Combustible Floors. Listed gasfired toil…
    127. 929.3 Vents. Vents or vent connectors that are capable of
    128. 931.1 General.931.0 Small Ceramic Kilns. The provisions of thi…
    129. 931.6 Exterior Installations. Kilns shall be installed with
    130. 932.0 Outdoor Open Flame Decorative Appliances.932.1 General. …
    131. 933.1 General. 933.0 Evaporative Cooling Systems. Evaporative …
    132. 933.2 Location. Evaporative cooling systems shall be
    133. 933.3 Access, Inspection, and Repair. Evaporative
    134. 933.4 Installation. An evaporative cooler supported by the
    135. 934.2 Unit Coolers. Factory-built unit coolers for use in
    136. 934.3 Self-Contained Mechanical Refrigeration Sys-tems. Self-c…
    137. 935.1 General.935.0 Ductless Mini-Split Systems Installation. …
    138. 937.1 General. 937.0 Gaseous Hydrogen Systems. Gaseous hydroge…
    139. 938.0 Compressed Natural Gas (CNG) Vehicular Fuel
  10. Chapter 10 — BOILERS AND PRESSURE VESSELS
  11. Chapter 11 — REFRIGERATION
  12. Chapter 12 — HYDRONICS
  13. Chapter 13 — FUEL GAS PIPING
  14. Chapter 14 — PROCESS PIPING
  15. Chapter 15 — SOLAR ENERGY SYSTEMS
  16. Chapter 16 — STATIONARY POWER PLANTS
  17. Chapter 17 — REFERENCED STANDARDS
  18. Appendix A — RESIDENTIAL PLAN EXAMINER REVIEW FORM FOR HVAC SY…
  19. Appendix B — PROCEDURES TO BE FOLLOWED TO PLACE GAS EQUIPMENT …
  20. Appendix C — INSTALLATION AND TESTING OF OIL (LIQUID) FUEL-FIR…
  21. Appendix D — FUEL SUPPLY: MANUFACTURED/MOBILE HOME PARKS AND R…
  22. Appendix E — SUSTAINABLE PRACTICES
  23. Appendix F — SIZING OF VENTING SYSTEMS AND OUTDOOR COMBUSTION …
  24. Appendix G — EXAMPLE CALCULATION OF OUTDOOR AIR RATE

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