Desa (V) CB36(N Manuel D’Utilisation
13
www.desatech.com
117437-01
GAS SUIPPLY AND PIPING (Cont.)
Checking Gas Connections
GAS SUPPLY AND PIPING
Continued
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.
or servicing. Correct all leaks at once.
WARNING: Never use an open fl ame to check for a
leak. Apply noncorrosive leak detection fl uid to all joints.
Bubbles forming show a leak. Correct all leaks at once.
Bubbles forming show a leak. Correct all leaks at once.
Pressure Testing Gas Supply Piping System
Test Pressures In Excess of 1/2 PSIG (3.5 kPa)
1. Disconnect
fi replace and its individual equipment shutoff valve
from the gas supply piping system. Pressures in excess of 1/2 psig
(3.5 kPa) will damage fi replace gas regulator.
2. Cap off open end of gas pipe where equipment shutoff valve
was
was
connected.
3. Pressurize supply piping system by either opening propane/LP
supply tank valve for propane/LP gas fi replace or opening main
gas valve located on or near gas meter for natural gas fi re-
place, or by using compressed air.
4. Check all joints of gas supply piping sytem. Apply noncorro-
sive leak detection fl uid to all joints at once.
5. Reconnect
fi replace and equipment shutoff valve to gas supply
Check reconnected fi ttings for leaks.
Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Figure 25).
2. Pressurize supply piping system by either opening propane/LP
supply tank valve for propane/LP gas fi replace or opening main
gas valve located on or near gas meter for natural gas fi re-
place, or by using compressed air.
4. Check all joints from propane/LP supply tank or gas meter to
equipment shutoff valve (see Figure 26 for propane/LP or Figure
27 for natural gas). Apply noncorrosive leak detection fl uid to all
27 for natural gas). Apply noncorrosive leak detection fl uid to all
joints. Bubbles forming show a leak. Correct all leaks at once.
Open
Closed
Equipment
Shutoff
Valve
Shutoff
Valve
Figure 25 - Equipment Shutoff Valve
Propane/LP
Supply Tank
Supply Tank
Gas Valve
Equipment
Shutoff
Valve
Shutoff
Valve
Gas
Meter
Meter
Gas Valve
Equipment
Shutoff
Valve
Shutoff
Valve
Figure 26 - Checking Gas Joints for Propane/LP Gas Fireplace
Figure 27 - Checking Gas Joints for Natural Gas Fireplace
Pressure Testing Fireplace Gas Connections
1. Open equipment shutoff valve (see Figure 25).
2. Open propane/LP supply tank valve for propane/LP fi replace
or main gas valve located on or near gas meter for natural
gas
fi replace.
3. Check all joints from equipment shutoff valve to gas valve
(see
(see
Figure 26 for propane/LP or Figure 27 for natural gas,
Apply noncorrosive leak detection fl uid to all joints. Bubbles
formed show a leak. Correct all leaks at once.
5. Light
fi replace (see Operating Fireplace, page 16 or 17 depend-
ing on ignition system). Check all other internal joints for leaks.
5. Turn off fi replace (see To Turn Off Gas to Appliance, page 16 or
page 17 depending on ignition system).