Hearth & Home HHFPDF32F1 - Page 21

21
Installation (cont.)
CHECKING GAS CONNECTIONS
Pressure Testing Gas Supply Piping System
Test Pressures in Excess Of 1/2 PSIG (3.5 kPa):
1.
Disconnect the heater, including the main gas valve (control valve) and equipment shutoff valve, from
the gas supply piping system. Pressures greater than 1/2 PSIG will damage the regulator.
2.
Cap off the open end of the gas pipe where the equipment shutoff valve was connected.
3. Open the gas supply tank valve or use compressed air to pressurize the supply piping system.
4. Check all joints of the gas supply piping system. Use a mixture of liquid soap and water in the gas joints
to check for leaks—bubbles may indicate a leak.
5. Immediately correct all leaks.
6.
Reconnect the heater
and equipment shutoff valve to gas supp
l
y. Check reconnected fittings or leaks.
Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa):
1.
Close the equipment shutoff valve (see Fig. 16).
2. Open the gas supply tank valve or use compressed air to pressurize the supply piping system.
3.
Check all joints from the gas meter to the equipment shutoff valve (see Fig. 16.1 & 16.2).
4. Use a mixture of liquid soap and water in the gas joints to check for leaks—bubbles may indicate a leak.
5. Immediately correct all leaks.
Pressure Testing Heater Gas Connections:
1.
Open the equipment shutoff valve (see Fig. 17).
2. Open the gas supply tank valve.
3. Ensure the control knob of the heater is in the OFF position.
4.
Check all joints from the equipment shutoff valve to the control
valve (see Fig. 17.1 & 17.2). Use a mixture of liquid soap and water
in the gas join
ts t
o check f
or leaks—bubbles ma
y indica
t
e a leak
.
5.
Light the heater (see OPERATION, pages 23–24). Check all other
internal joints for leaks.
6.
Turn off the heater (see TO TURN OFF GAS TO THE HEATER, page 24.
After installing or servicing the heater, test all gas piping and connections for leaks.
Immediately correct all leaks.
WARNING
Never use an open flame to check for a leak. Apply a mixture of liquid soap and water
to all joints—bubbles may indicate a leak. Immediately correct all leaks.
WARNING
Equipment
Shuto
Valve
Open
Closed
Fig. 17—Equipment
Shutoff Valve
Equipment
Shuto
Valve
Propane/
LP Supply
Tank
Gas Control Valve
(Behind)
Fig. 17.1—Checking Gas Joints (Propane/LP Only)
Gas Control Valve
(Behind)
Equipment
Shutoff Valve
Gas Meter
Fig. 17.2—Checking Gas Joints (Natural Gas Only)
Vent-Free Gas Fireplace User’s Manual