Boilers shall be designed constructed and certified in accordance with the ASME Boiler and Pressure Vessel Code Section I or IV. Controls and safety devices for boilers with fuel input ratings of 12500000 Btu/hr (3663 kW) or less shall meet the requirements of ASME CSD-1. Gas-fired boilers shall conform to the requirements listed in Chapter 24.
Authority: This gas-fired water heater is design certified by CSA INTERNATIONAL under American National Standard/CSA Standard for Gas Water Heaters ANSI Z21.10.1 CSA 4.1 (current edition). The installation must conform with this manual Local Codes and with the current edition of the National Fuel Gas Code ANSI Z223.1. Example:
Boiler installations : Boiler installation requirements include: A passageway at least 24 inches wide clear of all obstructions shall be provided on both sides and at the rear of each boiler (where necessary this clearance shall be increased to facilitate removal or opening of closures casings or covers)
Underground gas piping shall be installed with sufficient clearance from any other underground structure to avoid contact therewith to allow maintenance and to protect against damage from proximity to other structures. In addition underground plastic piping shall be installed with sufficient clearance or shall be insulated from sources of heat to prevent the heat from impairing the ...