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

These requirements apply to oil-fired air heaters and direct-fired heaters.

Requirements for the installation and use of oil-burning equipment a re included in the Standard for the Installation of Oil-Burning Equipment, NFPA 31.

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 733


    Oiled-Fired Air Heaters and Direct-Fired Heaters

    • Most Recent
  2. UL 733

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    Oiled-Fired Air Heaters and Direct-Fired Heaters

    • Historical Version