Vanguard Heating VMH26NR Checking Gas Connections, Pressure Testing Gas Supply Piping System

Models: VMH26NR

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CHECKING GAS

OWNER’S MANUAL

INSTALLATION

Continued

CHECKING GAS

CONNECTIONS

Pressure Testing Gas Supply Piping System WARNING: Test all gas pip- ing and connections for leaks after installing or servicing. Cor- rect all leaks at once.

Pressure Testing Fireplace Gas ConnectionsWARNING: Never use an open flame to check for a leak. Apply a mixture of liquid soap and water to all joints. Bubbles forming show a leak. Correct all leaks at once.

Pressure Testing Gas Supply Piping System

Test Pressures In Excess Of 1/2 PSIG

1.

Disconnect fireplace and its individual

 

manual shutoff valve from gas supply

 

piping system. Pressures in excess of 1/2

 

psig will damage fireplace regulator.

2.

Cap off open end of gas pipe where

 

manual shutoff valve was connected.

3.

Pressurize supply piping system by ei-

 

ther using compressed air or opening

Test Pressures Equal To or Less Than 1/2 PSIG

1.Close manual shutoff valve (see Fig- ure 25).

2.Pressurize supply piping system by ei- ther using compressed air or opening main gas valve located on or near gas meter.

3.Check all joints from gas meter to manual shutoff valve (see Figure 26). Apply mixture of liquid soap and wa- ter to gas joints. Bubbles forming show a leak.

4.Correct all leaks at once.

Manual

Open

Shutoff Valve

Closed

Figure 25 - Manual Shutoff Valve

Pressure Testing Fireplace Gas Connections

1.Open manual shutoff valve (see Figure 25).

2.Open main gas valve located on or near gas meter.

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

4.Check all joints from manual shutoff valve to thermostat gas valve (see Fig- ure 26). Apply mixture of liquid soap and water to gas joints. Bubbles form- ing show a leak.

5.Correct all leaks at once.

6.Light fireplace (see Operating Fire- place, pages 18 through 20). Check all other internal joints for leaks.

7.Turn off fireplace (see To Turn Off Gas to Appliance, page 19).

8.Replace front panel.

 

main gas valve located on or near gas

 

meter.

4.

Check all joints of gas supply piping

 

system. Apply mixture of liquid soap

 

and water to gas joints. Bubbles form-

 

ing show a leak.

5.

Correct all leaks at once.

6.

Reconnect heater manual shutoff valve

 

to gas supply. Check reconnected fit-

 

tings for leaks.

Manual

Shutoff

Valve

Gas Meter

Figure 26 - Checking Gas Joints

Continued

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Vanguard Heating VMH26NR Checking Gas Connections, Pressure Testing Gas Supply Piping System, Installation, Continued