VANGUARD FLAME MAX®

UNVENTED NATURAL GAS LOG HEATER

INSTALLATION

Continued

CHECKING GAS

CONNECTIONS

WARNING: Test all gas pip- ing and connections for leaks after installing or servicing. Cor- rect all leaks at once.

WARNING: 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 heater and its individual

manual shutoff valve from gas supply

piping system. Pressures in excess of

Test Pressures Equal To or Less Than 1/2 PSIG

1.Close manual shutoff valve (see Fig- ure 14).

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 15). Apply mixture of liquid soap and wa- ter to gas joints. Bubbles forming show a leak.

4.Correct all leaks at once.

Manual

Shutoff Open

Valve

Closed

Figure 14 - Manual Shutoff Valve

Pressure Testing Heater Gas Connections

1.Open manual shutoff valve (see Fig- ure 14).

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

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

4.Check all joints from manual shutoff valve to control valve (see Figure 15). Apply mixture of liquid soap and wa- ter to gas joints. Bubbles forming show a leak.

5.Correct all leaks at once.

6.Light heater (see Operating Heater, pages 14 and 16). Check all other in- ternal joints for leaks.

7.Turn off heater (see To Turn Off Gas to Appliance, page 15).

 

1/2 psig will damage heater 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

 

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 and manual shutoff

 

valve to gas supply. Check reconnected

 

fittings for leaks.

Manual Shutoff Valve

Gas Meter

Control Valve Location

Figure 15 - Checking Gas Joints

12

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Image 12
Desa VYM27NR Checking GAS Connections, Pressure Testing Gas Supply Piping System, Pressure Testing Heater Gas Connections

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