21
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Figure 25. Gas Supply Line
Step 7. Gas Pressure Requirements
Pressure requirements for Heat-N-Glo gas fireplaces are
shown in the table below.
Pressure
Natural Gas
Propane
Minimum
7.0 inches
12.0 inches
Inlet Pressure
w.c.
w.c.
Maximum Inlet
14.0 inches
14.0 inches
Gas Pressure
w.c.
w.c.
Manifold
3.5 inches
10.0 inches
Pressure
w.c.
w.c.
Connections are provided on the front of the gas control
valve for both inlet and manifold pressures. To use these
the valve cover must be removed and the small slotted screw
inside the pressure tap loosened. Manifold pressure should
be checked with main burner turned on and rear log off.
This screw must be retightened carefully after pressure
gauge is removed to avoid a gas leak.
The fireplace and its individual shut-off valve must be
disconnected from the gas supply piping system during
any pressure testing of the system at test pressures in
excess of one-half (1/2) psig (3.5 kPa).
The fireplace must be isolated from the gas supply piping
system by closing its individual shut-off valve during any
pressure testing of the gas supply piping system at test
pressures equal to or less than one-half (1/2) psig (3.5 kPa).
Step 6. The Gas Supply Line
NOTE: Have the gas supply line installed in accordance
with local building codes by a qualified installer
approved and/or licensed as required by the locality.
(In the state of Massachusetts installation must be
performed by a licensed plumber or gas fitter).
NOTE: Before the first firing of the fireplace, the gas
supply line should be purged of any trapped air.
NOTE: Consult local building codes to properly size
the gas supply line leading to the 1/2 inch
(13 mm) hook-up at the unit.
This gas fireplace is designed to accept a 1/2 inch
(13 mm) gas supply line.
To install the gas supply line:
• A listed (and State of Massachusetts approved) 1/2 inch
(13mm) tee-handle manual shut-off valve and a listed
flexible gas connector are connected to the 1/2 inch
(13mm) inlet of the control valve.
NOTE:
If substituting
for these components, please consult local codes for
compliance.
• Locate the gas line access hole in the outer casing of
the fireplace.
• Insert the gas supply line through the gas line hole, and
connect it to the shut-off valve.
• When attaching the pipe, support the control so that the
lines are not bent or torn.
• After the gas line installation is complete, use a soap
solution to carefully check all gas connections for leaks.
WARNING: DO NOT USE AN OPEN FLAME TO
CHECK FOR GAS LEAKS
.
• At the gas line access hole, use insulation to re-pack
the space around the gas pipe.
• Insert insulation from the outside of the fireplace and
pack the insulation tightly to totally seal between the
pipe and the outer casing.
USE A WRENCH
ON SHUT-OFF VALVE
WHEN TIGHTENING
GAS LINE.
GAS
CONTROLS