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UL 2021

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UL 2021 pdf

Original price was: $998.00.Current price is: $499.00.

Fixed and Location-Dedicated Electric Room Heaters

Underwriters Laboratories , 09/30/2015

Category:
Standard By:Underwriters Laboratories , 09/30/2015
Published:09/30/2015
Language:English
Please note: All interim revisions for this edition available at time of your purchase will be included.

Fixed and Location-Dedicated Electric Room Heaters

UL 2021

1 Scope

1.1 These requirements cover fixed and location-dedicated electric room heating equipment rated 600 volts or less to be employed in ordinary locations in accordance with the National Electrical Code, ANSI/NFPA 70.

1.2 These requirements do not cover movable heaters, wall- or ceiling-hung heaters, baseboard heaters, duct heaters, central-heating furnaces, fan-coil units, panel- or cable-type radiant-heating equipment, electric boilers, or any other electric heating equipment or appliances that are covered in or as a part of separate, individual requirements.

Original price was: $293.77.Current price is: $146.00.

Fixed and Location-Dedicated Electric Room Heaters

Underwriters Laboratories , 01/30/2013

Category:
Standard By:Underwriters Laboratories , 01/30/2013
Published:01/30/2013
Summary of Topics

The new Third Edition of the Standard for Fixed and Location-Dedicated Electric Room Heaters, UL 2021, is being issued with the following:

  • Addition and revision of requirements to relocate component standard references from Appendix A into the body of the standard as component requirements.
  • Deletion of obsolete asbestos wire and reference to asbestos material.
  • Additional requirements for switches serving as disconnect means of fixed electric room heaters.
  • Field mounting of heating elements.
  • Revision to include an exception to the audible/visual alarm requirement for heaters that employ certain types of over-temperature limit controls.

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