Desa CGS2718P, CGS2718N, CGS3124P, CGS3124P, CGS3124N, CLD3018PA, CLD3018NA, CLD3924PTA, CLD3924NTA Operation And Installation Manual

Also see for CLD3018NA: OWNER'S OPERATION AND INSTALLATION MANUAL OWNER'S OPERATION AND INSTALLATION MANUAL

Desa CGS2718P, CGS2718N, CGS3124P, CGS3124P, CGS3124N, CLD3018PA, CLD3018NA, CLD3924PTA, CLD3924NTA Operation And Installation Manual Manual pdf 12 page image

107068For more information, visit www.desatech.comFor more information, visit www.desatech.com12INSTALLATIONConnecting To Gas Supply (Cont.)Checking Gas ConnectionsINSTALLATIONContinuedInstallation must include a equipment shutoff valve, union, andplugged 1/8" NPT tap. Locate NPT tap within reach for test gaugehook up. NPT tap must be upstream from heater (see Figure 14).IMPORTANT: Install equipment shutoff valve in an accessiblelocation. The main gas valve is for turning on or shutting off the gasto the appliance.Check your building codes for any special requirements for locatingequipment shutoff valve to fireplaces.Apply pipe joint sealant lightly to male NPT threads. This willprevent excess sealant from going into pipe. Excess sealant in pipecould result in clogged heater valves.We recommend that you install sediment trap in supply line asshown in Figure 14. Locate sediment trap where it is within reach forcleaning. Install in piping system between fuel supply and heater.Locate sediment trap where trapped matter is not likely to freeze. Asediment trap traps moisture and contaminants. This keeps themfrom going into heater controls. If sediment trap is not installed oris installed wrong, heater may not run properly.CAUTION: Use pipe joint sealant that is resistantto liquid petroleum (LP) gas.CAUTION: Avoid damage to regulator. Hold gasregulator with wrench when connecting it to gaspiping and/or fittings.Figure 14 - Gas Connection* Purchase the optional CSA design-certified equipment shutoffvalve from your dealer. See Accessories, page 32.** Minimum inlet pressure for purpose of input adjustment.Tee Joint Cap Pipe Nipple3" MinimumSediment TrapGas RegulatorCSA Design-CertifiedEquipment Shutoff ValveWith 1/8" NPT Tap* ApprovedFlexible GasHose (if allowedby local codes)NaturalFrom Gas Meter(5" W.C.** to10.5" W.C.Pressure)Propane/LPFrom ExternalRegulator(11" W.C.** to14 " W.C.PressurePressure Testing Gas Supply Piping SystemTest Pressures In Excess Of 1/2 PSIG (3.5 kPa)1. Disconnect appliance with its appliance main gas valve (controlvalve) and equipment shutoff valve from gas supply piping. Pres-sures in excess of 1/2 psig will damage heater regulator.2. Cap off open end of gas pipe where equipment shutoff valvewas connected.3. Pressurize supply piping system by either opening propane/LPsupply tank valve for propane/LP gas or opening main gas valvelocated on or near gas meter for natural gas, or using com-pressed air.4. Check all joints of gas supply piping system. Apply a com-mercial leak detection solution to all joints. Bubbles formingshow a leak.5. Correct all leaks at once.6. Reconnect heater and equipment shutoff valve to gas supply.Check reconnected fittings for leaks.Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa)1. Close equipment shutoff valve (see Figure 15, page 13).2. Pressurize supply piping system by either opening propane/LPsupply tank valve for propane/LP gas or opening main gas valvelocated on or near gas meter for natural gas, or using com-pressed air.3. Check all joints from gas meter (natural gas) or propane/LPsupply to equipment shutoff valve (see Figure 16 or 17, page13). Apply a commercial leak detection solution to all joints.Bubbles forming show a leak.4. Correct all leaks at once.WARNING: Never use an open flame to check fora leak. Apply a commercial leak detection solution toall joints. Bubbles forming show a leak. Correct allleaks at once.WARNING: Test all gas piping and connectionsfor leaks after installing or servicing. Correct all leaksat once.CAUTION: For propane/LP units, make sure ex-ternal regulator has been installed between propane/LP supply and heater. See guidelines underConnect-ing to Gas Supply, page 11.CHECKING GAS CONNECTIONS