Scope
- To establish safeguards for life, limb, health, and property.
- To define practices that are consistent with safety.
- To prescribe safety standards.
Application
The standard applies to all refrigerating systems and heat pumps used in institutional, public assembly, residential, commercial, industrial, and mixed-use occupancies, and to parts and components added after adoption of this code.
Refrigerant classification is shown in the following table:
Requirements for refrigerant use:
- Requirements for refrigerant use are based on the probability that the refrigerant will enter occupied space and one type of occupancy (institutional, public assembly, residential, commercial, industrial, and mixed-use).
- The total amount of refrigerant permitted to be installed in a system is determined by the type of occupancy, the refrigerant group, and the probability that refrigerant will enter the occupied space.
- Refrigerant systems, piping, and associated appurtenances shall not be installed in or on stairways, stair landings, entrances, or exits.
- Refrigeration system components shall not interfere with free passage through public hallways, and limitations regarding size are based on refrigerant type.
Service provisions:
- All serviceable components of refrigerating systems shall be safely accessible.
- Properly located stop valves, liquid transfer valves, refrigerant storage tanks, and adequate venting are required when needed for safe servicing of equipment.
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