Minn. R. agency 144, ch. 4658, MECHANICAL SYSTEMS; NEW CONSTRUCTION, pt. 4658.4545
Current through Register Vol. 49, No. 29, 2025
Mechanical rooms with equipment using liquefied petroleum gas (LPG) or flammable liquid fuels producing vapors heavier than air must be provided with continuous mechanical outdoor air ventilation that provide a pressure which is equal to or greater than atmospheric, to remove accumulations of gas or vapor at the floor level. A relief or exhaust vent must be located within 12 inches below the ceiling, and a relief or exhaust vent must be located within 12 inches above the floor.
Minn. R. agency 144, ch. 4658, MECHANICAL SYSTEMS; NEW CONSTRUCTION, pt. 4658.4545
Statutory Authority: MS s 144A.04; 144A.08