SNZ - AS/NZS 3500.4
Plumbing and drainage Part 4: Heated water services
|Publication Date:||28 May 2021|
This document 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 document applies to the installation of the following types of water heaters:
(a) Storage water heaters with a rated delivery or capacity of up to 700 L per heater.
(b) Heat exchange water heaters.
NOTE 1 Electric heat exchange water heaters are defined in AS 1361. Other fuel sources are covered in the applicable Standards, e.g. AS/NZS 2712, AS/NZS 5263.1.2.
(c) Instantaneous, continuous flow water heaters.
NOTE 2 Appendix M provides guidelines for the operation and maintenance of heated water services.
Illustrations used in this Standard are diagrammatic only and have been chosen without prejudice.