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105443-01E
For more information, visit www.desatech.com
For more information, visit www.desatech.com
14
INSTALLATION
Continued
INSTALLATION
Checking Gas Connections
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 (con-
trol valve) and equipment shutoff valve from gas supply pip-
ing system. Pressures in excess of 1/2 psig will damage fire-
place regulator.
2. Cap off open end of gas pipe where equipment 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 a non-
corrosive leak detection fluid to all joints. Bubbles forming
show a leak.
5. Correct all leaks at once.
6. Reconnect heater 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 22).
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 equipment shutoff valve
(see Figure 23). Apply a noncorrosive leak detection fluid to
all joints.
4. Correct all leaks at once.
CHECKING GAS CONNECTIONS
WARNING: Test all gas piping and connections,
internal and external to unit, for leaks after installing
or servicing. Correct all leaks at once.
WARNING: Never use an open flame to check for
a leak. Apply a noncorrosive leak detection fluid to all
joints. Bubbles forming show a leak. Correct all leaks
at once.
Pressure Testing Fireplace Gas Connections
1. Open equipment shutoff valve (see Figure 22).
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 equipment shutoff valve to thermostat
gas valve (see Figure 23). Apply a noncorrosive leak detection
fluid to all joints. Bubbles forming show a leak.
5. Correct all leaks at once.
6. Light fireplace (see Operating Fireplace, pages 16 through
18). Check all other internal joints for leaks.
7. Turn off fireplace (see To Turn Off Gas to Appliance, page
17).
8. Replace front panel.
O
POSI
P
O
Open
Closed
Equipment
Shutoff
Valve
Figure 23 - Checking Gas Joints (Shown with Optional Mantel)
Figure 22 - Equipment Shutoff Valve
Equipment
Shutoff Valve
Gas Meter