View all text of Subpart C [§ 279.20 - § 279.24]
§ 279.23 - On-site burning in space heaters.
Generators may burn used oil in used oil-fired space heaters provided that:
(a) The heater burns only used oil that the owner or operator generates or used oil received from household do-it-yourself used oil generators;
(b) The heater is designed to have a maximum capacity of not more than 0.5 million Btu per hour; and
(c) The combustion gases from the heater are vented to the ambient air.