Revision
February 01, 2013
UL 427
UL Revision
Edition 5
Published Date: February 01, 2013
Last Revision: June 15, 2022
Scope
004270-000000-0000001 Scope
1.1 These requirements cover refrigerating units intended for connection in accordance with the National Electrical Code, NFPA 70, to alternating-current (ac) circuits rated not greater than 600 volts.
1.2 This standard also covers component refrigeration systems (self-contained mechanical refrigeration systems), not already covered by a UL standard, that heat, cool or dehumidify as integral (not stand-alone) components of appliances.
1.3 Refrigerating units covered by these requirements employ sealed, hermetic-type motor compressors, and air- or water-cooled condensers.
1.4 These requirements do not cover equipment intended for comfort cooling.
This standard was replaced by 60335-2-89 on 9/29/2024.