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Full Description

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

These requirements apply to oil-fired unit heaters as defined herein. Unit heaters designed to supply heated air through ducts are covered in the Standard for Oil-Fired Central Furnaces, UL 727.

Requirements for the installation and use of oil-burning equipment are included in the Standard for the Installation of Oil Burning Equipment, NFPA 31 and the BOCA National Mechanical Code.

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 mai ntain the level of safety for the user of the product as originally anticipated by the intent of this Standard.
 

Document History

  1. UL 731


    Oil-Fired Unit Heaters

    • Most Recent
  2. UL 731

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    Oil-Fired Unit Heaters

    • Historical Version