This Standard sets out the requirements for the design, installation and commissioning of heated water services using drinking water or rainwater or a combination thereof. It includes aspects of the installation from, and including, the valve(s) on the cold water inlet to any cold water storage tank or water heater and the downstream fixtures and fittings. It applies to new installations as well as alterations, additions and repairs to existing installations.

This Standard applies to the installation of the following types of water heaters (see Clause 5.2.1 or Clause 6.3.1):

(a) Storage water heaters with a rated delivery or capacity of up to 700 L per heater.

(b) Heat exchange water heaters.

NOTE: Electric heat exchange water heaters are defined in AS 1361, and other fuel sources are covered in the applicable standards e.g., AS/NZS 2712, AS 4552.

(c) Instantaneous (continuous flow) water heaters.

(d) All authorized water heaters. Illustrations used in this Standard are diagrammatic only and have been chosen without prejudice.