ANSI/AHRI Standard 420-2008. Performance Rating of Forced-Circulation Free-Delivery Unit Coolers for Refrigeration

Air-Conditioning, Heating and Refrigeration Institute (AHRI). Supersedes ARI Standard 420-2000. 2008. 30p. The purpose of this standard is to establish for Forced-Circulation Free-Delivery Unit Coolers for Refrigeration: definitions; test requirements; rating requirements; minimum data requirements for Published Ratings; marking and nameplate data; and conformance conditions.
This standard is intended for the guidance of the industry, including manufacturers, engineers, installers, contractors, and users.
This standard applies to factory-made, Forced-Circulation, Free-Delivery Unit Coolers, as defined in Section 3, operating with a Volatile Refrigerant fed by either direct expansion or liquid overfeed at wet and/or dry conditions