Desa Glo-Warm FA-3B Owner's Operation And Installation Manual

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Desa Glo-Warm FA-3B Owner's Operation And Installation Manual Manual pdf 10 page image

10105566INFRARED NATURAL GAS HEATERTee JointReducerBushing to1/8" NPT1/8" NPTPlug TapTestGaugeConnection *SedimentTrapTee JointPipe NippleCapEquipmentShutoffValve *3/8" NPTPipe NippleHeaterCabinetFigure 14 - Gas Connection* A CSA/AGA design-certified equipment shutoff valve with 1/8" NPT tap is an acceptablealternative to test gauge connection. Purchase the optional CSA/AGA design-certifiedequipment shutoff valve from your dealer. See Accessories, page 19.3" MinimumGround JointUnionPressureRegulatorRegulatorBracketInlet Pipe From GasMeter (7" W.C. to10.5" W.C. Pressure)CONNECTING TO GASSUPPLYWARNING: A qualified serviceperson must connect heater togas supply. Follow all local codes.Typical Inlet Pipe DiametersFA-3B/FAS-3C 3/8" or greaterFA-5B/FAS-5C 1/2" or greaterInstallation must include equipment shutoffvalve, union, and plugged 1/8" NPT tap.Locate NPT tap within reach for test gaugehook up. NPT tap must be upstream fromheater (see Figure 14).Install sediment trap in supply line as shownin Figure 14. Locate sediment trap where itis within reach for cleaning. Locate sedi-ment trap where trapped matter is not likelyto freeze. A sediment trap traps moistureand contaminants. This keeps them fromgoing into heater controls. If sediment trapis not installed or is installed wrong, heatermay not run properly.IMPORTANT: Hold pressure regulatorwith wrench when connecting it to gas pip-ing and/or fittings.CAUTION: Use pipe joint seal-ant that is resistant to liquid pe-troleum (LP) gas.IMPORTANT: Check gas line pressure be-fore connecting heater to gas line. Gas linepressure must be no greater than 14 inchesof water. If gas line pressure is higher,heater regulator damage could occur.WARNING: Never connectheater to private (non-utility) gaswells. This gas is commonlyknown as wellhead gas.CAUTION: Use only new,black iron or steel pipe. Inter-nally-tinned copper tubing maybe used in certain areas. Checkyour local codes. Use pipe of largeenough diameter to allow propergas volume to heater. If pipe istoo small, undue loss of pres-sure will occur.INSTALLATIONContinuedIMPORTANT: Install an equipment shutoffvalve in an accessible location. The equip-ment shutoff valve is for turning on orshutting off the gas to the appliance.Apply pipe joint sealant lightly to malethreads. This will prevent excess sealantfrom going into pipe. Excess sealant in pipecould result in clogged heater valves.WARNING: This appliance re-quires a 3/8" NPT (National PipeThread) inlet connection to thepressure regulator.