Intro to HVAC Mechanical Code Regulations : Appliances, Fireplaces, and Solid Fuel-Burning Equipment

 Overview

  • Focus: Minimum construction and performance criteria for fireplaces, appliances, and equipment, along with safe installation practices.

IMC Section 901: General

  • Scope: Codes for hazardous locations and solid fuel-burning fireplaces and appliances.

IMC Section 902: Masonry Fireplaces

  • Scope: Codes for fireplace accessories and labels.
  • Additional Reference: International Building Code for detailed regulations on masonry fireplaces.

IMC Section 903: Factory Built Fireplaces

  • Scope: Codes for Hearth extensions, unvented gas log heaters, and gasketed fireplace doors.

IMC Sections 904-907: Additional Appliances

  • Section 904: Pellet fuel-burning appliances.
  • Section 905: Fireplace stoves, room heaters, and hearth extensions.
  • Section 906: Factory-built barbecue appliances.
  • Section 907: Incinerators and crematories.

IMC Section 908: Cooling Towers

  • Scope: Regulations for cooling towers, evaporative condensers, and fluid coolers.
  • Topics: Access, location restrictions, support and anchorage, water supply, drainage, disposal, refrigerants, hazardous fluids, and control devices.

IMC Section 909: Vented Wall Furnaces

  • Scope: Design requirements for vented wall furnaces.
  • Topics: Installation, location, door swing restrictions, duct prohibition, manual shut-off valve requirements, and general access.

IMC Sections 910-917: Specific Appliances

  • Section 910: Floor furnaces (placement and bracing).
  • Section 911: Duct furnaces (installation requirements).
  • Section 912: Infrared radiant heaters (support and clearances).
  • Section 913: Clothes dryers (exhaust requirements and installation clearances).
  • Section 914: Sauna heaters (location, protection, installation, access, heat and time controls, and room ventilation).
  • Section 915: Engine and gas turbine powered equipment and appliances (general installation and permanently installed equipment).
  • Section 916: Pool and spa heaters (general installation rules).
  • Section 917: Cooking appliances (installation, listing, and labeling, with emphasis on domestic equipment).

IMC Section 918: Forced Air Warm Air Furnaces

  • Scope: Regulations due to ventilation variables.
  • Topics: Oil-fired furnace testing, electric furnace testing, heat pump testing, volume damper restrictions, air duct circulation, outdoor and return air openings, and outdoor opening protection.

Speed Round: General Requirements for Various Appliances

  • Section 919: Conversion burners.
  • Section 920: Unit heaters.
  • Section 921: Vented room heaters.
  • Section 922: Kerosene and oil-fired stoves.
  • Section 923: Small ceramic kilns.
  • Section 924: Stationary fuel cell power systems.
  • Section 925: Masonry heaters.
  • Section 926: Gaseous hydrogen systems.
  • Section 927: Radiant heating systems (system clearances, installation location, and finish materials).
  • Section 928: Evaporative cooling equipment (installation, location, openings, approved water supply, and air intake locations).

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