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NFPA 31: Standard for the Installation of Oil-Burning Equipment
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What is NFPA 31?
NFPA 31: Document Scope

1.1 Scope. 1.1.1 This standard shall apply to the installation of stationary liquid fuel–burning appliances, including but not limited to industrial-, commercial-, and residential-type steam, hot water, or warm air heating appliances; domestic-type range burners; space heaters; and portable liquid fuel–burning equipment. 1.1.2 This standard shall also apply to all accessories and control systems, whether electric, thermostatic, or mechanical, and all electrical wiring connected to liquid fuel–burning appliances. 1.1.3 This standard shall also apply to the installation of liquid fuel storage and supply systems connected to liquid fuel–burning appliances. 1.1.4 This standard shall also apply to those multifueled appliances in which a liquid fuel is one of the standard or optional fuels. 1.1.5* This standard shall not apply to internal combustion engines, oil lamps, or portable devices not specifically covered in this standard. (See Chapter 11 for portable devices that are covered in this standard.) A.1.1.5 Examples of portable devices not covered by this standard are blowtorches, melting pots, and weed burners.

NFPA 31 is a standard for the safe, efficient design and installation of heating appliances that use a liquid fuel, typically No. 2 heating oil, but also lighter fuels, such as kerosene and diesel fuel, and heavier fuels, such as No. 4 fuel oil. NFPA 31 applies to the installation of these systems in residential, commercial, and industrial occupancies.

Official document scope
What does NFPA 31 address?

The provisions of NFPA 31 apply to stationary oil-burning equipment and appliances, including steam, hot water, and warm air heating system; domestic-type range burners and space heaters; and portable oil-burning equipment. Related fuel oil storage and supply, accessory equipment, and control systems are also covered.

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