• UL 427

UL 427

Refrigerating Units

Underwriters Laboratories , 11/11/2011

Publisher: UL

File Format: PDF

$315.00$631.00


Please note: All interim revisions for this edition available at time of your purchase will be included.

Refrigerating Units

UL 427

1 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.

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