DESA INTERNATIONAL
UNVENTED NATURAL GAS FIREPLACE
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 fireplace and its individual |
manual shutoff valve from gas supply |
piping system. Pressures in excess of 1/2 |
Test Pressures Equal To or Less Than 1/2 PSIG
1.Close manual shutoff valve (see Fig- ure 20).
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 21). Apply mixture of liquid soap and wa- ter 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 Fig- ure 20).
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 21). 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 14 through 16). Check all other internal joints for leaks.
7.Turn off fireplace (see To Turn Off Gas to Appliance, page 15).
Open
Manual
Shutoff
Valve
Closed
Figure 20 - Manual Shutoff Valve
| psig will damage fireplace gas 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. | |
| shutoff valve to gas supply. Check re- |
| connected fittings for leaks. |
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Manual Gas Valve |
Figure 21 - Checking Gas Joints
Manual
Shutoff
Valve
Gas Meter
12 | 104352 |