This Standard specifies requirements for the safety aspects, in terms of the design, construction, installation and inspection, of refrigerating appliances, systems and ancillary equipment intended for use or installation in institutional, public assembly, residential, commercial and industrial occupancies. It includes heat pumps and reverse cycle airconditioning systems. It applies to new refrigerating systems, to extensions and modifications of existing systems and to used systems on being reinstalled and operated at another site. It also applies in the case of the conversion of a system for use with another refrigerant.It does not apply to specific requirements detailed in the following:(a) Household refrigerators covered by AS/NZS 4474.1.(b) Refrigerated room airconditioners covered by AS 1861.(c) Electrical approval and test specifications such as AS/NZS 3179, AS 3303, AS 3305 or NZS 6324.NOTES:1 This Standard is limited to fundamental safety requirements and does not purport to provide detailed design guidance.2 The requirements of this Standard are based on the assumption that refrigerating systems are designed, constructed, installed, inspected and maintained by competent personnel.3 The introduction of new refrigerants and techniques make it critical to ensure that the equipment to be installed or converted is suitable for use with the refrigerant to be used. Failure to observe appropriate precautions could lead to system failure resulting in injury or death.

Amendment 1 AS/NZS 1677.2:1998 see DR 99022 CP First published in Australia as part of AS CB3-1933.AS CB3-1933 redated 1939.Second edition 1967.Revised and redesignated AS 1677-1974.Second edition 1981.Third edition 1986.First published in New Zealand as NZSS 1653:1962.Revised and redesignated NZS 5235:1978.NZS 5235.2 first published 1988.NZS 5235:1978 revised and redesignated NZS 5235.1:1991.AS 1677, NZS 5235.1:1991 and NZS 5235.2:1988 jointly revised, amalgamated and redesignated in part as AS/NZS 1677.2:1998. First published in Australia as part of AS CB3-1933. AS CB3-1933 redated 1939. Second edition 1967. Revised and redesignated AS 1677-1974. Second edition 1981. Third edition 1986. First published in New Zealand as NZSS 1653:1962. Revised and redesignated NZS 5235:1978. NZS 5235.2 first published 1988. NZS 5235:1978 revised and redesignated NZS 5235.1:1991. AS 1677, NZS 5235.1:1991 and NZS 5235.2:1988 jointly revised, amalgamated and redesignated in part as AS/NZS 1677.2:1998.