AS/NZS 5149.2:2016 Refrigerating systems and heat pumps - Safety and environmental requirements, Part 2: Design, construction, testing, marking and documentation (ISO 5149-2:2014, MOD)
Standards Australia/Standards New Zealand
Supersedes: AS/NZS 1677.2:1998 Refrigerating systems and heat pumps - Safety and environmental requirements, Part 2: Design, construction, testing, marking and documentation (ISO 5149-2:2014, MOD)
Draft Designation: DR AS/NZS 5149.2:2016The objective of this series of Standards is to promote the safe design, construction, disposal, installation and operation of refrigerating systems.
This Standard does not address the hazards caused by products of combustion or decomposition of refrigerants. These products may include (but are not limited to) hydrogen fluoride. Exposure to these products can be harmful.
Lubricants and associated hazards are also not covered by this Standard. Lubricants can present significant health and environmental hazards.
AS/NZS 60079.14 is the current Australian/New Zealand Standard on electrical installations design, selection and erection in explosive atmospheres.
The AS/NZS 5149 series consists of the following parts under the general title, Refrigerating systems and heat pumps—Safety and environmental requirements:
Part 1: Definitions, classification and selection criteria (ISO 5149-1:2014, MOD)
Part 2: Design, construction, testing, marking and documentation (ISO 5149-2:2014, MOD) (this Standard)
Part 3: Installation site (ISO 5149-3:2014, MOD)
Part 4: Operation, maintenance, repair and recovery (ISO 5149-4:2014, MOD)
This Standard is an adoption with national modifications and has been reproduced from ISO 5149-2:2014, Refrigerating systems and heat pumps—Safety and environmental requirements, Part 2: Design, construction, testing, marking and documentation and has been varied as indicated to take account of Australian and New Zealand conditions. The modifications are specified in the normative Appendix ZZ following the source text.
These modifications to the ISO source text are essential for compliance with this Australian/New Zealand Standard.
Appendix ZA of AS/NZS 5149.1 provides guidance and examples on refrigerant charge limit determination for information only.
This Standard is to be read in conjunction with relevant legislation, regulation and national Refrigeration Industry Codes of Practice.
As this Standard is reproduced from an International Standard, the following applies:
(a) In the source text ‘this part of ISO 5149’ should read ‘this Australian/New Zealand Standard’.
(b) A full point substitutes for a comma when referring to a decimal marker.
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 5149.2:2016.
This part of ISO 5149 is applicable to the design, construction, and installation of refrigerating systems, including piping, components, materials, and ancillary equipment directly associated with such systems, which are not covered in ISO 5149-1, ISO 5149-3, or ISO 5149-4. It also specifies requirements for testing, commissioning, marking, and documentation. Requirements for secondary heat-transfer circuits are excluded except for any safety devices associated with the refrigerating system.
This part of ISO 5149 is applicable to new refrigerating systems, extensions or modifications of already existing systems, and for used systems, being transferred to and operated on another site.
This part of ISO 5149 applies to:
a) refrigerating systems, stationary or mobile, of all sizes including heat pumps;
b) secondary cooling or heating systems;
c) the location of the refrigerating systems;
d) replaced parts and added components after the adoption of this part of ISO 5149, if they are not identical in function and in capacity.
This part of ISO 5149 does not cover “motor vehicle air conditioners”. It does not apply to goods in storage, with respect to spoilage or contamination, but it also applies in the case of the conversion of a system for another refrigerant.
Contents:
1: Scope
2: Normative References
3: Terms And Definitions
4: Requirements For Components And Piping
5: Requirements For Assemblies
Annex A: (Informative) Checklist For External Visual Inspection Of The Refrigerating System
Annex B: (Normative) Additional Requirements For Refrigerating Systems And Heat Pumps With Ammonia (Nh3)
Annex C: (Informative) Determination Of Category For Assemblies
Annex D: (Normative) Requirements For Intrinsic Safety Test
Annex E: (Informative) Examples For Arrangement Of Pressure Relief Devices In Refrigerating Systems
Annex :F (Normative) Allowable Equivalent Length Of Discharge Piping
Annex G: (Informative) Stress Corrosion Cracking
Refrigeration.
Air Conditioning and Refrigeration Equipment Manufacturers Association of Australia; Air Conditioning and Refrigeration Wholesalers Association; Australian Industry Group; Australian Institute of Refrigeration, Air Conditioning and Heating; Australian National Retailers Association; Australian Refrigeration Council; Climate Control Companies Association, New Zealand; Consumer Electronics Suppliers Association; Department of Environment; Department of Natural Resources and Mines, Qld; Environmental Protection Authority, New Zealand; Green Cooling Association; Institute of Refrigeration Heating and Air Conditioning Engineers of New Zealand; Metropolitan Fire and Emergency Services Board, Vic.; Ministry of Business, Innovation and Employment, New Zealand; New Zealand Electrotechnical Committee; Refrigerants Australia; Workplace Health and Safety Queensland; WorkSafe New Zealand; WorkSafe Victoria.
