• UL 875

UL 875

Electric Dry Bath Heaters

Underwriters Laboratories , 01/01/2000

Publisher: UL

File Format: PDF

$102.00$204.48


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These requirements cover electric dry-bath heating equipment and other equipment rated 600 volts or less that is intended to produce a dry-heat environment to be installed in accordance with the National Electrical Code, ANSI/NFPA 70. The relative humidity in the heated environment is in the region of 10 - 25 percent and the purpose of the heated environment (for air temperatures, see Sections and ) is to promote perspiration in a short time by means of a relatively warm and dry atmosphere. The completed equipment is to be provided with an automatic temperature-regulating control that may be integral with the heater or wall-mounted, with an integral manual-reset limit control, a timer, and any other necessary associated equipment. Electric dry-bath heating equipment and other equipment intended to produce a dry-heat environment may consist of:
  1. .A heater unit intended for fixed installation in a special room that is built or assembled in the field to comply to the manufacturer's size specifications;
  2. A combination of a heater unit and a prefabricated, factory-built room in which the assembled combination may be specified for field installation, or that may be supplied with a power-supply cord and intended to be fastened in place or located in a dedicated space. The room may be arranged so that it can be taken apart for shipment; or
  3. A combination of a heater and a cabinet that is constructed to enclose all but the user's head. The unit is provided with a power supply cord and is intended to be fastened in place or located in a dedicated space.


These requirements do not cover steam-bath heaters, or cable-type radiant-heating equipment, nor any other electric heating equipment or appliances that are covered in separate, individual requirements.

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