13
Figure 9. Gas Supply Line
Insert insulation from the outside of the fireplace and
pack the insulation tightly to totally seal between the
pipe and the outer casing.
At the gas line access hole the gap between the supply
piping and gas access hole can be plugged with non-
combustible insulation to prevent cold air infiltration.
Step 7. The Gas Supply Line
NOTE: Have the gas supply line installed by a qualified
service technician in accordance with all building codes
.
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 1/2 inch (13 mm) manual shut-off valve and a
listed flexible gas connector are connected to the 3/8
inch (10 mm) inlet of the control valve.
Locate the gas line access hole in the outer casing of
the fireplace.
Access the fireplace controls compartment, 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
.
!
Step 8. Gas Pressure Requirements
Pressure requirements for Heat-N-Glo gas fireplaces
are shown in the table below.
Pressure
Natural Gas
Propane
Minimum
5.0 inches
11.0 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.
A one-eighth (1/8) inch (3 mm) N.P.T. plugged tapping is
provided on the inlet and outlet side of the gas control for a
test gauge connection to measure the manifold pressure.
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).
Figure 8. Gas Control System
DSI IGNITION
1/4" (6mm)
GAS
VALVE
MANUAL
SHUT-OFF VALVE
FLEX
CONNECTOR
