Vanguard Heating VMH10TN Checking, Connections, Pressure Testing Gas Supply Piping System

Models: VMH10TN

1 32
Download 32 pages 37.64 Kb
Page 18
Image 18
CHECKING

CHECKING

WARNING ICONG 001WARNING

GAS

Test all gas piping and connections for leaks after installing or

CONNECTIONS

servicing. Correct all leaks at once.

 

 

 

 

 

WARNING ICONG 001WARNING

 

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 either using compressed air or opening 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 forming show a leak.

5.Correct all leaks at once.

Test Pressures Equal To or Less Than 1/2 PSIG

1.Close manual shutoff valve (see Figure 19).

2.Pressurize supply piping system by either 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 20). Apply mixture of liquid soap and water to gas joints. Bubbles forming show a leak.

4.Correct all leaks at once.

PRESSURE TESTING FIREPLACE GAS CONNECTIONS

1.Open manual shutoff valve (see Figure 19).

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 Figure 20). Apply mixture of liquid soap and water to gas joints. Bubbles forming show a leak.

5.Correct all leaks at once.

6.Light fireplace (see Operating Fireplace, pages 19 through 21). Check all other internal joints for leaks.

7.Turn off fireplace (see To Turn Off Gas to Appliance, page 21).

8.Replace front panel.

Manual

 

Manual

Shutoff

 

 

Shutoff

Valve

Gas Meter

Valve

Open

 

Closed

 

 

Figure 19 - Manual Shutoff Valve

Figure 20 - Checking Gas Joints

18

103670

Page 18
Image 18
Vanguard Heating VMH10TN installation manual Checking, Connections, Pressure Testing Gas Supply Piping System