FMI FMH26TN - Manual (Page 16)

16 107105
NATURAL GAS VENT-FREE FIREPLACE SYSTEM
ON
POSIT
O
PO
Open
Closed
Equipment
Shutoff
Valve
Figure 26 - Equipment Shutoff Valve
Gas Meter
Figure 27 - Checking Gas Joints
Equipment
Shutoff
Valve
Test Pressures Equal To or Less Than
1/2 PSIG (3.5 kPa)
1. Close equipment shutoff valve (see Fig-
ure 26).
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 equip-
ment shutoff valve (see Figure 27). Apply
a noncorrosive leak detection fluid to gas
joints. Bubbles forming show a leak.
4. Correct all leaks at once.
INSTALLATION
Continued
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
noncorrosive leak detection fluid
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
(3.5 kPa)
1. Disconnect appliance with its appliance
main gas valve (control valve) and equip-
ment shutoff valve from gas supply pip-
ing system. Pressures in excess of 1/2
psig will damage fireplace 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 noncorrosive leak de-
tection fluid to gas joints. Bubbles
forming show a leak.
5. Correct all leaks at once.
6. Reconnect heater and equipment
shutoff valve to gas supply. Check re-
connected fittings for leaks.
Pressure Testing Fireplace Gas
Connections
1. Open equipment shutoff valve (see Fig-
ure 26).
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 Fig-
ure 27). Apply a noncorrosive leak de-
tection fluid to gas joints. Bubbles
forming show a leak.
5. Correct all leaks at once.
6. Light fireplace (see Operating Fire-
place, pages 17 and 18). Check all other
internal joints for leaks.
7. Turn off fireplace (see To Turn Off Gas
to Appliance, page 18).
8. Replace front panel.
CHECKING GAS
CONNECTIONS