12104385UNVENTED NATURAL GAS LOG HEATERCGS2718N, CGS3124N, CLD3018N,CLD3924NT, and CCL3930NT(A)Figure 14 - Manual Shutoff ValveONPOSITIONOFFPOSITIONOpenClosedManualShutoff ValveFigure 15 - Checking Gas JointsGas MeterManualShutoffValve Control Valve LocationINSTALLATIONContinuedWARNING: Never use an openflame to check for a leak. Apply amixture of liquid soap and waterto all joints. Bubbles forming showa leak. Correct all leaks at once.WARNING: Test all gas pip-ing and connections for leaksafter installing or servicing. Cor-rect all leaks at once.CHECKING GASCONNECTIONSPressure Testing gas SupplyPiping systemTest Pressures In Excess Of 1/2 PSIG1. Disconnect heater and its individualmanual shutoff valve from gas supplypiping system. Pressures in excess of1/2 psig will damage heater regulator.2. Cap off open end of gas pipe wheremanual shutoff valve was connected.3. Pressurize supply piping system by ei-ther using compressed air or openingmain gas valve located on or near gasmeter.4. Check all joints of gas supply pipingsystem. Apply mixture of liquid soapand water to gas joints. Bubbles form-ing show a leak.5. Correct all leaks at once.6. Reconnect heater and manual shutoffvalve to gas supply. Check reconnectedfittings for leaks.Test Pressures Equal To or Less Than1/2 PSIG1. Close manual shutoff valve (see Fig-ure 14).2. Pressurize supply piping system by ei-ther using compressed air or openingmain gas valve located on or near gasmeter.3. Check all joints from gas meter tomanual shutoff valve (see Figure 15).Apply mixture of liquid soap and wa-ter to gas joints. Bubbles forming showa leak.4. Correct all leaks at once.Pressure Testing Heater GasConnections1. Open manual shutoff valve (see Fig-ure 14).2. Open main gas valve located on or neargas meter.3. Make sure control knob of heater is inthe OFF position.4. Check all joints from manual shutoffvalve to control valve (see Figure 15).Apply mixture of liquid soap and wa-ter to gas joints. Bubbles forming showa leak.5. Correct all leaks at once.6. Light heater (see Operating Heater,pages 16 and 17 [manually-controlledmodels] or pages 17 and 18 [thermo-statically-controlled models]). Checkall other internal joints for leaks.7. Turn off heater (see To Turn Off Gas toAppliance, page 17 [manually-con-trolled models] or page 18 [thermostati-cally-controlled models]).