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UL 731
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UL 731 6th Edition, January 31, 2018 UL Standard for Safety Oil-Fired Unit Heaters
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Description / Abstract:
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.
The oil-burning equipment covered by these requiremetns are intended for installation in accordance with the National Fire Protection Association Standard for the Installation of Oil Burning Equipment, NFPA 31, the International Mechanical Code and the Uniform Mechanical Code.
If a value for measurement is followed by a value in other units in parentheses, the second value may be only approximate. The first stated value is the requirement.
The oil-burning equipment covered by these requiremetns are intended for installation in accordance with the National Fire Protection Association Standard for the Installation of Oil Burning Equipment, NFPA 31, the International Mechanical Code and the Uniform Mechanical Code.
If a value for measurement is followed by a value in other units in parentheses, the second value may be only approximate. The first stated value is the requirement.