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PDFWAC 296-307-43519

What requirements apply to appliances?

(1) LP-gas appliances must be approved for use on commercial vehicles.
(2) In vehicles not intended for human occupancy, where the gas-fired heating appliance is used to protect the cargo, such heater may be unvented, but provision must be made to dispose of the products of combustion to the outside.
(3) In vehicles intended for human occupancy, all gas-fired heating appliances, including water heaters, must be designed or installed to provide for complete separation of the combustion system from the atmosphere of the living space. Such appliances must be installed with the combustion air inlet assembly furnished as a component of the appliance, and with either:
(a) The flue gas outlet assembly furnished as a component of the appliance; or
(b) A listed roof jack if the appliance is listed for such use.
The combustion air inlet assembly, flue gas outlet assembly, and roof jack must extend to the outside atmosphere.
(4) Provision must be made to ensure an adequate supply of outside air for combustion.
(5) All gas-fired heating appliances and water heaters must have an approved automatic device designed to shut off the flow of gas to the main burner and to the pilot in the event the pilot flame is extinguished.
(6) Gas-fired appliances installed in the cargo space must be readily accessible.
(7) Appliances must be constructed or protected to minimize the possible damage or impaired operation resulting from cargo shifting or handling.
(8) Appliances inside the vehicle must be located so that a fire at an appliance will not block the exit route.
[WSR 97-09-013, recodified as § 296-307-43519, filed 4/7/97, effective 4/7/97. Statutory Authority: RCW 49.17.040, [49.17.]050 and [49.17.]060. WSR 96-22-048, § 296-306A-43519, filed 10/31/96, effective 12/1/96.]
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