GAS-FIRED, DIRECT VENT, CONDENSING, HOT WATE
2014-1-1 · GAS-FIRED, DIRECT VENT, CONDENSING, HOT WATER BOILER INSTALLATION, OPERATION AND MAINTENANCE MANUAL • Canada • Natural Gas and Propane Installation Code, CAN/CSA B149.1. • Canadian Electrical Code, Part I, Safety Standard for electricity and gas supply connected to boiler prior to servicing. 3. Inspect gas line for leaks. 4.