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// DEFINITION

Direct Refrigeration System

A system in which the evaporator or condenser of the refrigerating system is in direct contact with the air or other substances to be cooled or heated.
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Related Code Sections

1109.2.5 Refrigeration, Refrigerant Pipe Shafts
). Piping in a direct system using Group A1 refrigerant where the refrigerant quantity does not exceed the limits of Table 1103.1 for the smallest ...
1107.2.2 Refrigeration, Refrigerant Penetrations
system. Penetrations by piping in a direct system where the refrigerant quantity does not exceed Table 1103.1 for the smallest occupied space through ...
1107.2.2 Refrigeration, Refrigerant Penetrations
system. Penetrations by piping in a direct system where the refrigerant quantity does not exceed Table 1103.1 for the smallest occupied space through ...
1103.3 Refrigeration, System Classification
Refrigeration systems shall be classified according to the degree of probability that refrigerant leaked from a failed connection, seal or component ...