UL 733

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.