TM 5-3895-374-24-2FUELREQUIREMENTSNaturalGas:The gas supply shall have a gas regulator (supplied by customer) within three feet of the burner. Thisregulator shall supply the burner with a pressure of no more than 6½ ounces per square inch (11" W.C.).The size of the supply pipe shall be:Model CEI-500 1inchCEI-800 1¼ inchesCEI-1000 1¼ inchesCEI-1500 2inchesCEI-2000 2inchesCEI-3000 2inchesCEI-4000 2inchesCEI-IHS 1¼inchesL.P.Gas:The gas supply shall be connected to the vapor side of the L.P.G. storage tank. Never connect to thedischarge side of a high temperature vaporizer (over 90 F). A high pressure regulator (supplied bycustomer) shall be installed at the connection to the storage tank to supply no more than fifteen PSI to thelow pressure regulator (supplied by customer) installed within three feet of the burner. This low pressureregulator shall supply the burner with a pressure of no more than 6½ ounces per square inch (11" W.C.).The size of the supply pipe from the storage tank shall be:ModelCEI-500 1inchCEI-800 1¼ inchesCEI-1000 1¼ inchesCEI-1500 2inchesCEI-2000 2 inchesCEI-3000 2 inchesCEI-4000 2inchesCEI-IHS 1¼inchesNo.2FuelOil:The oil supply tank shall be no more than ten feet above or below the oil pump on the burner. The fuel oilpipes shall be a minimum of 3/8" I.D. for both supply and return. However, if the distance to the supply tankis over twenty feet, the pipe size should be increased to at least 1/2" I.D. CAUTION : Burning a fuel oilheavier than #2 can cause fuel oil pump problems and clogging of the oilpage 3-925
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