Desa Comfort Glow CGG2618P Owner's Operation And Installation Manual

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Desa Comfort Glow CGG2618P Owner's Operation And Installation Manual Manual pdf 12 page image

12103425UNVENTED (VENT-FREE) GAS LOG HEATERTee JointPipeNippleCap3" MinimumSediment TrapGasRegulatorFrom ExternalRegulator(11" W.C.** to14" W.C. Pressure)A.G.A. Design-CertifiedManual Shutoff Valve With1/8" NPT Tap*Approved FlexibleGas Hose (if allowedby local codes)CAUTION: Avoid damage toregulator. Hold gas regulator withwrench when connecting it to gaspiping and/or fittings.Figure 14 - Gas Connection* Purchase the optional A.G.A. design-certified manual shutoff valve from your dealer. SeeAccessories, page 28.** Minimum inlet pressure for purpose of input adjustment.Figure 13 - External Regulator With VentPointing DownPropane/LPSupply TankExternal RegulatorVent Pointing DownINSTALLATIONCONNECTING TO GASSUPPLYWARNING: A qualified ser-vice person must connect heaterto gas supply. Follow all localcodes.CAUTION: Never connectheater directly to the propane/LPsupply. This heater requires anexternal regulator (not supplied).Install the external regulator be-tween the heater and propane/LPsupply.Installation Items NeededBefore installing heater, make sure you havethe items listed below.• external regulator (supplied by installer)• piping (check local codes)• sealant (resistant to propane/ LP gas)• manual shutoff valve *• test gauge connection *• sediment trap• tee joint• pipe wrench* An A.G.A. design-certified manual shutoffvalve with 1/8" NPT tap is an acceptablealternative to test gauge connection. Pur-chase the optional A.G.A. design-certifiedmanual shutoff valve from your dealer. SeeAccessories, page 28.The installer must supply an external regu-lator. The external regulator will reduceincoming gas pressure. You must reduceincoming gas pressure to between 11 and 14inches of water. If you do not reduce incom-ing gas pressure, heater regulator damagecould occur. Install external regulator withthe vent pointing down as shown in Figure13. Pointing the vent down protects it fromfreezing rain or sleet.WARNING: Never connectheater to private (non-utility) gaswells. This gas is commonlyknown as wellhead gas.Installation must include a manual 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).Apply pipe joint sealant lightly to malethreads. This will prevent excess sealantfrom going into pipe. Excess sealant in pipecould result in clogged heater valves.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 1/2"diameter or greater to allowproper gas volume to heater. Ifpipe is too small, undue loss ofpressure will occur.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.CAUTION: Use pipe joint seal-ant that is resistant to liquid pe-troleum (LP) gas.