Desa SVYD18NRA Series Owner's Operation And Installation Manual

Also see for Victor Hearth: OWNER'S OPERATION AND INSTALLATION MANUAL

Contents

www.desatech.com 113084-01C12INSTALLATIONContinuedWARNING: Never connectnatural gas heater to private (non-utility) gas wells. This gas is com-monly known as wellhead gas.Installation Items NeededBefore installing heater, make sure you have theitems listed below.• external regulator - propane/LP only (suppliedby installer)• piping (check local codes)• sealant (resistant to propane/LP gas)• equipment shutoff valve *• test gauge connection *• sediment trap• tee joint• pipe wrench* A CSA design-certified equipment shutoff valvewith 1/8" NPT tap is an acceptable alternative totest gauge connection. Purchase the optional CSAdesign-certified equipment shutoff valve from yourdealer. See Accessories, page 27.The gas inlet connection for the stove heater islocated on the lower right-hand side of the stovewhen viewed from the front of the unit. The gasconnection can be made either through the bot-tom right side or through the lower back openingas illustrated in Figure 14. Make sure gas log heateris secured to the stove cavity assembly.For propane/LP units, installer must supply anexternal regulator. The external regulator will re-duce incoming gas pressure. You must reduce in-coming gas pressure to between 11 and 14 inchesof water. If you do not reduce incoming gas pres-sure, heater regulator damage could occur. Installexternal regulator with the vent pointing down asshown in Figure 15. Pointing the vent down pro-tects it from freezing rain or sleet.CAUTION: Use only new,black iron or steel pipe. Inter-nally-tinned copper tubing maybe used in certain areas. Checkyour local codes. Use pipe of1/2" diameter or greater to allowproper gas volume to heater. Ifpipe is too small, undue loss ofvolume will occur.Figure 14 - Gas Regulator Location andGas Line Access Into Stove CabinetGas InletConnectionAccessGas Log HeaterBack ViewSide ViewFigure 15 - External Regulator With VentPointing DownBack StovePanelStove Unit FrontPropane/LPSupply Tank ExternalRegulatorVentPointingDownInstallation must include a equipment shutoffvalve, union, and plugged 1/8" NPT tap. LocateNPT tap within reach for test gauge hook up. NPTtap must be upstream from heater (see Figure 16on page 13).IMPORTANT: Install equipment shutoff valve inan accessible location. The equipment shutoffvalve is for turning on or shutting off the gas tothe appliances.Check your building codes for any special re-quirements for locating equipment shutoff valveto fireplaces.Apply pipe joint sealant lightly to male threads.This will prevent excess sealant from going intopipe. Excess sealant in pipe could result in cloggedheater valves.WARNING: Use pipe jointsealant that is resistant to liquidpetroleum (LP) gas.We recommend that you install a sediment trap insupply line as shown in Figure 16, page 13. Lo-cate sediment trap where it is within reach forcleaning. Install in piping system between fuelsupply and heater. Locate sediment trap wheretrapped matter is not likely to freeze. A sedimenttrap traps moisture and contaminants. This keepsthem from going into heater controls. If sedimenttrap is not installed or is installed wrong, heatermay not run properly.