Specifies test methods and performance and construction requirements for storage water heaters of rated hot water delivery up to 630L or nominal capacity of 710L, heat exchanger water heaters with a heat storage volume up to 710L, and water heaters that use electric resistance as the primary energy source.

This Standard specifies test methods, and performance and construction requirements for electric water heaters of the following types:(a) Storage water heaters of rated hot water delivery up to 630 L or nominal capacity up to 710L, including the storage component of solar, heat pumps and indirectly heated systems.(b) Heat exchange water heaters with a heat storage volume up to 710L.(c) Water heaters that use electric resistive heating as the primary energy source, although the test methods for heat loss and delivery are applicable to other water heater types such as solar water heaters and heat pumps.NOTES: 1 Intending purchasers of water heaters outside the Scope of this Standard are advised to include in their specification the relevant requirements of this Standard. A typical product specification form is given in AppendixF.2 The test methods in this Standard may also be applied to product sizes that are not covered by the Scope.

AS1056.1 first published as part of ASC316-1957.ASC316-1970 revised and redesignated AS1056-1972.AS1056-1977 revised and redesignated as AS1056.1-1985.Second edition 1991.AS1056.2 first published 1985.AS1056.3 first published as part of ASC316-1970.ASC316-1970 revised and redesignated AS1056-1972.AS1056-1977 revised and redesignated in part as AS1056.3-1985.Third edition 2001.AS1056.1-1991, AS1056.2-1985 and AS1056.3-2001, revised, amalgamated and redesignated AS/NZS4692.1:2005.Reconfirmed 2016. AS 1056.1 first published as part of AS C316-1957. AS C316-1970 revised and redesignated AS 1056-1972. AS 1056-1977 revised and redesignated as AS 1056.1-1985. Second edition 1991. AS 1056.2 first published 1985. AS 1056.3 first published as part of AS C316-1970. AS C316-1970 revised and redesignated AS 1056-1972. AS 1056-1977 revised and redesignated in part as AS 1056.3-1985. Third edition 2001. AS 1056.1-1991, AS 1056.2-1985 and AS 1056.3-2001, revised, amalgamated and redesignated AS/NZS 4692.1:2005. Reissued incorporating Amendment No. 1 (April 2011). Reissued incorporating Amendment No. 2 (October 2015). Reissued incorporating Amendment No. 3 (January 2020).