9.31.6. Service Water Heating Facilities

9.31.6. Service Water Heating Facilities
9.31.6.1. Hot Water Supply
  1. Where hot water is required to be supplied in accordance with Article 9.31.4.2., equipment shall
    1. provide an adequate supply of hot water, and
    2. be installed in conformance with Part 7.
9.31.6.2. Equipment and Installation
  1. Service water heaters shall conform to appropriate provincial or territorial requirements or, in the absence of such requirements, to the NPC.
  2. The installation of service water heaters, including provisions for mounting, clearances and air supply, shall conform to appropriate provincial or territorial requirements or, in the absence of such requirements, to
    1. CSA B51, "Boiler, Pressure Vessel, and Pressure Piping Code,"
    2. CSA B139, "Installation Code for Oil-Burning Equipment,"
    3. CSA B149.1, "Natural Gas and Propane Installation Code,"
    4. CSA B365, "Installation Code for Solid-Fuel-Burning Appliances and Equipment," or
    5. CSA C22.1, "Canadian Electrical Code, Part I."
  3. Where the building is in a location where the spectral response acceleration, Sa(0.2), is greater than 0.55, service water heaters shall be secured to the structure to prevent overturning. (See Note A-9.31.6.2.(3).)
9.31.6.3. Corrosion-Resistant Coating
  1. Where storage tanks for service water heaters are of steel, they shall be coated with zinc, vitreous enamel (glass lined), hydraulic cement or other corrosion-resistant material.
9.31.6.4. Fuel-Burning Heaters
  1. Fuel-burning service water heaters shall be connected to a chimney flue conforming to Section 9.21.
9.31.6.5. Heating Coils
  1. Heating coils of service water heaters shall not be installed in a flue or in the combustion chamber of a boiler or furnace heating a building.

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