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UL 733 Ed. 5-2019
Standard for Oil-Fired Air Heaters and Oil-Fired Direct-Fired Heaters - Published Date: May 2, 2019
These requirements apply to oil-fired air heaters and oil fired direct-fired heaters. Requirements for the installation and use of oil-burning equipment are included in the Standard for the Installation of Oil-Burning Equipment, NFPA 31. This standard is not intended for permanently installed heaters.
Underwriters Laboratories [ul]