AS/NZS 5149.3:2016

This Standard specifies a simple means of referring to common refrigerants instead of using the chemical name, formula, or trade name. It also establishes a uniform system to be used in assigning the proper reference number and classification to refrigerants. The system for refrigerant classification is defined and physical data of common refrigerants listed.

This part of ISO 5149 is applicable to the installation site (plant space and services). It specifies requirements for the site for safety, which could be needed because of, but not directly connected with, the refrigerating system and its ancillary components.This part of ISO 5149 is applicable to new refrigerating systems, extensions or modifications of existing systems, and for used systems being transferred to and operated on another site. This part of ISO 5149 also applies in the case of the conversion of a system for another refrigerant.

Originated in Australia as part of AS CB3-1933.
Final Australian edition AS 1677-1986.
Originated in New Zealand as NZSS 1653:1962.
Final New Zealand editions NZS 5235.1:1991 and NZS 5235.2:1988.
AS 1677-1986, NZS 5235.1:1991 and NZS 5235.2:1998 jointly revised, amalgamated and redesignated in part as AS/NZS 1677.2:1998.
Revised and redesignated in part as AS/NZS 5149.3:2016.