Step 6 The Gas Control System; Step 7 The Gas Supply Line; Step 8 Gas Pressure Requirements - Heat & Glo GATEWAY Installer's Manual

Step 6. The Gas Control System
WARNING: THIS UNIT IS NOT FOR USE WITH
!
SOLID FUEL.
Intermittent Pilot Ignition (IPI) System
The gas control system used with this model is In-
termittent Pilot Ignition (IPI). This system includes a 3V
control valve, electronic module, and intermittent pilot.
IPI IGNITION
NOTE:
Flames too close to the ceramic
insulators can cause nuisance lock-
outs and electrode failure.
Figure 3.25
Gas Control System
Step 7. 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 Commonwealth 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 (13mm)
hook-up at the unit.
This gas fireplace is designed to accept a 1/2 inch (13mm)
gas supply line. To install the gas supply line:
• A listed (and Commonwealth 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 substi-
tuting for these components, please consult local codes
for compliance.
• Locate the gas line access hole in the outer casing of
the fireplace.
• The gap between the supply piping and gas access hole
can be plugged with non-combustible insulation to pre-
vent cold air infiltration.
• Open the fireplace lower grille, 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, all connec-
tions must be tightened and checked for leaks with a
commercially-available, non-corrosive leak check solu-
tion. Be sure to rinse off all leak check solution following
testing.
24
• At the gas line access hole, use insulation to re-pack
• Insert insulation from the outside of the fireplace and
FLAME
SENSOR
ROD
Step 8. Gas Pressure Requirements
Pressure requirements for Heat & Glo gas fireplaces
are shown in the table below.
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).
Heat & Glo • Gateway • 288-900 Rev. S • 3/06
WARNING: DO NOT USE AN OPEN FLAME
!
TO CHECK FOR GAS LEAKS.
the space around the gas pipe.
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
MANUAL
SHUT-OFF VALVE
GAS VALVE
FLEX
CONNECTOR
CONTROL
VALVE
Figure 3.26 Gas Supply Line
Pressure Natural Gas
Minimum 5.0 inches
Inlet Pressure
Maximum Inlet 14.0 inches
Gas Pressure
Manifold 3.5 inches
Pressure
GAS LINE
ACCESS
Propane
11.0 inches
w.c. w.c.
14.0 inches
w.c. w.c.
10.0 inches
w.c. w.c.