Std

UL 2021

Fixed and Location-Dedicated Electric Room Heaters

standard by Underwriters Laboratories , 01/30/2013

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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.
 

Product Details

Edition:
3
Published:
01/30/2013
Number of Pages:
3
 

Document History

  1. UL 2021


    Fixed and Location-Dedicated Electric Room Heaters

    • Most Recent

  2. UL 2021

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    Fixed and Location-Dedicated Electric Room Heaters

    • Historical Version

  3. UL 2021


    Fixed and Location-Dedicated Electric Room Heaters

    • Historical Version