ANSI/ASHRAE/IES Standard 15-2019
Safety Standard for Refrigeration Systems
(Supersedes ANSI/ASHRAE Standard 15-2016)
The 2019 edition of Standard 15 incorporates the following changes:
- Makes changes to requirements for R-717 ammonia systems
- Introduces requirements specific to Low Global Warming Potential (Low GWP) A2L refrigerants
- Changes restrictions for small, self-contained systems with higher-flammability refrigerants
- Defines “low-probability pumps” and provides requirements for their use
- Identifies requirements when changing a refrigerant within the same refrigerant class and lists restrictions on mixing refrigerants from different classes
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