CSA Group Construction and Test of Electric Storage-Tank Water Heaters

Scope 1.1 This Standard applies to both cord-connected and permanently connected storage-tank water heaters*, having tanks less than 610 mm inside diameter, for use on nominal system voltages of 600 V and less, and designed to be used in nonhazardous household and commercial locations in accordance with the Rules of the Canadian Electrical Code, Part I. *For convenience only, the shorter term "water heater" is used herein. 1.2 This Standard applies to water heaters that provide for the storage of hot water. The water shall be heated by immersion heater elements within the tank, wrap-around or other form of surface contact heater elements, or electrically heated circulation type units located either within the jacket or externally. Other types of electric heating, except as excluded by Clause 1.3, may be accepted subject to investigation. 1.3 This Standard applies to the water-heater section of kitchen units, combined with a cooking range, refrigerator, water pump, etc. 1.4 This Standard does not apply to (a) immersion type water heaters (see Clause 2); (b) side-arm type water heaters not attached to a storage tank; or (c) immersed-electrode type water heaters.