1105.2 Supports and Anchorage — 2025 California Mechanical Code

Supports and anchorage for refrigeration equipment and piping shall be designed in accordance with the building code as Occupancy Category H (hazardous facilities). Supports shall be made of noncombustible materials.

Exceptions:

(1) Equipment containing Group A1 refrigerants shall be permitted to be supported by the same materials permitted for the building type.

(2) The use of approved vibration isolators specifically designed for the normal, wind, and seismic loads encountered, shall be permitted.

REFRIGERATION

than 2 square feet (0.2 m [2] ) net free area opening shall be terminated directly to the outside of the building or extend to the outside of the building by continuous ducts.

1105.5.2 Mechanical Exhaust System. A mechanical exhaust system shall be designed to provide a complete change of air not less than every 20 minutes in such room or space and shall discharge to the outside of the building.

Exceptions:

(1) A condensing unit in a room or space where the cubical content exceeds 1000 cubic feet per horsepower (ft [3] /hp) (37.95 m [3] /kW) of the unit.

(2) A condensing unit in a room or space that has permanent gravity ventilation having an area of 2 square feet (0.2 m [2] ) or more to other rooms or openings exceeding 1000 ft [3] /hp (37.95 m [3] /kW).