Desa BLUE FLAME BLUE FLAME VENT-FREE NATURAL GAS HEATER Operation And Installation Manual

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Desa BLUE FLAME BLUE FLAME VENT-FREE NATURAL GAS HEATER Operation And Installation Manual Manual pdf 8 page image

8103113NATURAL GAS HEATERVANGUARD 6000 BTUIMPORTANT: Hold pressure regulator with wrench when connecting it to gas piping and/or fittings.* An A.G.A. design certified manual shutoff valve with 1/8" NPT tap is an acceptablealternative to test gauge connection. Purchase the optional A.G.A. design certified manualshutoff valve from your dealer. See Accessory, page 15.Tee JointReducerBushing to1/8" NPT1/8" NPTPlug TapTestGaugeConnection *PressureRegulatorTeeJointPipeNippleCapSediment TrapHeaterCabinet3/8" NPTPipe NippleGround Joint UnionManualShutoffValve *FromExternalRegulator(4" W.C. to10.5" W.C.Pressure)Figure 12 - Gas Connection3" MinimumCONNECTING TOGAS SUPPLYNOTICE: A qualified service per-son must connect heater to gassupply. Follow all local codes.IMPORTANT: Check gas line pressurebefore connecting heater to gas line. Gasline pressure must be no greater than 14inches of water. If gas line pressure is higher,heater regulator damage could occur.Installation must include a manual shutoffvalve, ground joint union, and plugged 1/8"NPT tap. Locate NPT tap within reach fortest gauge hook up. NPT tap must be up-stream from heater (see Figure 12).Apply pipe joint sealant lightly to malethreads. This will prevent excess sealantfrom going into pipe. Excess sealant in pipecould result in clogged heater valves.Install sediment trap (trap) in supply line asshown in Figure 12. Locate sediment trapwhere it is within reach for cleaning. Locatesediment trap where trapped matter is notlikely to freeze. A sediment trap traps mois-ture and contaminants. This keeps themfrom going into heater controls. If sedimenttrap is not installed or is installed wrong,heater may not run properly.CAUTION: Use only new,black iron or steel pipe. Inter-nally-tinned copper tubing maybe used in certain areas. Checkyour local codes. Use pipe 3/8"diameter or greater to allowproper gas volume to heater. Ifpipe is too small, undue loss ofpressure will occur.WARNING: Never connectheater to private (non-utility) gaswells. This gas is commonlyknown as wellhead gas.CAUTION: Use pipe joint seal-ant that is resistant to liquid pe-troleum (LP) gas.