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UL 412 Document Information:
Title
UL Standard for Safety Refrigeration Unit Coolers
Underwriters Laboratories Inc.
Publication Date:
Apr 26, 2004
Scope:
These requirements cover unit coolers intended for use in
refrigerators, freezers, refrigerated warehouses, walk-in coolers,
and the like. They are designed for connection to alternating
current (ac) circuits rated not more than 600 volts.
These requirements do not apply to fan-coil units intended for
comfort cooling, heating, or both, or to other air-conditioning
equipment or components covered by individual requirements.
Requirements for installation of unit coolers are included in
the National Electrical Code, NFPA 70, and the Safety Code for
Mechanical Refrigeration, ASHRAE 15.
A product that contains features, characteristics, components,
materials, or systems new or different from those in use when the
standard was developed, and that involves a risk of fire, electric
shock, or injury to persons, shall be evaluated using the
appropriate additional component and end-product requirements as
determined necessary to maintain the level of safety for the user
of the product as originally anticipated by the intent of this
standard.
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