www.desatech.com113132-01B 152. Pressurize supply piping system by eitheropening propane/LP supply tank valve forpropane/LP gas or opening main gas valvelocated on or near gas meter for natural gas,or using compressed air.3. Check all joints from gas meter to equipmentshutoff valve for natural gas or propane/LP sup-ply to equipment shutoff valve for propane/LP(see Figures 22 and 23). Apply noncorrosiveleak detection fluid to all joints. Bubbles form-ing show a leak.4. Correct all leaks at once.CHECKING GAS CONNECTIONSWARNING: Test all gas pipingand connections, internal andexternal to unit, for leaks afterinstalling or servicing. Correctall leaks at once.WARNING: Never use anopen flame to check for a leak.Apply a noncorrosive leak detec-tion fluid to all joints. Bubblesforming show a leak. Correct allleaks at once.CAUTION: Make sure exter-nal regulator has been installedbetween propane/LP supply andfireplace. See guidelines underConnecting Fireplace to GasSupply, page 14.PRESSURE TESTING GAS SUPPLYPIPING SYSTEMTest Pressures In Excess Of 1/2 PSIG(3.5 kPa)1. Disconnect fireplace with its main gas valve(control valve) and equipment shutoff valvefrom gas supply piping system. Pressuresin excess of 1/2 psig will damage fireplaceregulator.2. Cap off open end of gas pipe where equipmentshutoff valve was connected.3. Pressurize supply piping system by eitheropening propane/LP supply tank valve forpropane/LP gas or opening main gas valvelocated on or near gas meter for natural gas,or using compressed air.4. Check all joints of gas supply piping system.Apply noncorrosive leak detection fluid to alljoints. Bubbles forming show a leak.5. Correct all leaks at once.6. Reconnect fireplace and equipment shutoffvalve to gas supply. Check reconnected fittingsfor leaks.Test Pressures Equal To or Less Than1/2 PSIG (3.5 kPa)1. Close equipment shutoff valve (see Figure 21).INSTALLATIONContinuedFigure 21 - Equipment Shutoff ValveFigure 23 - Checking Gas Joints forPropane/LP GasPropane/LPSupply TankFigure 22 - Checking Gas Joints forNatural GasGas Control ValveEquipment Shutoff ValveEquipment Shutoff ValveGas MeterGas Control ValvePRESSURE TESTING FIREPLACE GASCONNECTIONS1. Open equipment shutoff valve (see Figure 21).2. Open main gas valve located on or near gasmeter for natural gas or open propane/LPsupply tank valve.OpenClosedEquipmentShutoffValve