Desa CDCFNRA, CDCFPRA installation manual Continued, Pressure Testing Gas Supply Piping System

Models: CDCFPRA CDCFNRA

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PRESSURE TESTING GAS SUPPLY PIPING SYSTEM

INSTALLATION

Continued

Figure 24 - Checking Gas Joints CAUTION: Make sure exter- nal regulator has been installed between propane/LPsupply and fireplace. See guidelines under Connecting to Gas Supply, page 16.

Gas Control Valve

Equipment

Shutoff

Valve

Propane/LP

Supply

Figure 25 - Checking Gas Joints (Natural Tank

PRESSURE TESTING GAS SUPPLY PIPING SYSTEM

Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)

1.Disconnect appliance with its appliance main gas valve (control valve) and equipment shutoff valve from gas supply piping system. Pressures in excess of 1/2 psig will damage heater regulator.

2.Cap off open end of gas pipe where equipment shutoff valve was connected.

3.Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas or opening main gas valve located 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 all joints. Bubbles forming show a leak.

5.Correct all leaks at once.

6.Reconnect fireplace 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 23).

2.Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas or opening main gas valve located on or near gas meter for natural gas, or using compressed air.

3.Check all joints from gas meter to equipment shutoff valve for natural gas or propane/LP sup- ply to equipment shutoff valve for propane/LP (see Figures 24 or 25). Apply noncorrosive leak detection fluid to all joints. Bubbles forming show a leak.

4.Correct all leaks at once.

Equipment

Open

 

Shutoff

 

Valve

 

 

Closed

Figure 23 - Equipment Shutoff Valve

Figure 24 - Checking Gas Joints

(Propane/LP Only)

Gas Control Valve

Equipment

 

 

Shutoff Valve

 

Gas Meter

Figure 25 - Checking Gas Joints (Natural

Gas Only)

PRESSURE TESTING FIREPLACE GAS CONNECTIONS

1.Open equipment shutoff valve (see Figure 23).

2.Open main gas valve located on or near gas meter for natural gas or open propane/LP supply tank valve.

3.Make sure control knob of fireplace is in the OFF position.

4.Check all joints from equipment shutoff valve to gas control valve (see Figures 24 or 25). Apply noncorrosive leak detection fluid to all joints. Bubbles forming show a leak.

5.Correct all leaks at once.

6.Light fireplace (see Operating Fireplace, page 22). Check all other internal joints for leaks.

7.Turn off fireplace (see To Turn Off Gas to Ap- pliance, page 23).

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Desa CDCFNRA, CDCFPRA Continued, Pressure Testing Gas Supply Piping System, Checking Gas Joints Propane/LP Only