Safety Standard for Refrigeration Systems. 

1. PURPOSE. 

This standard specifies safe design, construction, installation, and operation of refrigeration systems. 

2. SCOPE.

2.1 This standard establishes safeguards for life, limb, health, and property and prescribes safety requirements. 

2.2 This standard applies to the following:  

1. a. The design, construction, test, installation, operation, and inspection of mechanical and absorption refrigeration systems, including heat-pump systems used in stationary applications;  
2. b. Modifications, including replacement of parts or components if they are not identical in function and capacity;  
3. c. Substitutions of refrigerants having a different designation. 

2.3 This standard shall not apply to refrigeration systems using ammonia (R–717) as the refrigerant.  

2.4 This standard does not apply to residential refrigeration systems serving only a single dwelling unit or sleeping unit complying with ASHRAE Standard 15.2. 

Subcommittee 15.2. 

Safety Standard for Refrigeration Systems in Residential Applications. 

1. PURPOSE. 

2. SCOPE. 

2.1 This standard applies to listed refrigeration systems in the following residential applications that are limited to serving only a single dwelling unit or sleeping unit:  

1. a. One- and two-family dwellings and townhouses.  
2. b. Detached outbuildings associated with a one- or two-family dwelling or townhouse and located on the same property included in Section 2.1(a). 
3. c. Individual dwelling units and sleeping units located in a multifamily dwelling.