Step 4 The Gas Control System; Step 5 The Gas Supply Line; Step 6 Gas Pressure Requirements - Heat & Glo TWILIGHT Installer's Manual

Step 4. The Gas Control System
WARNING: THIS UNIT IS NOT FOR USE WITH
!
SOLID FUEL.
The type of gas control system used with this model: Inter-
mittent Pilot Ignition (IPI).
Intermittent Pilot Ignition (IPI) System
This system includes a 3V control valve, electronic module,
and intermittent pilot.
WARNING: 110-120 VAC MUST NEVER BE
!
CONNECTED TO A CONTROL VALVE IN A MIL-
LIVOLT SYSTEM.
WARNING: CONTINUOUS 1 10-120 V AC SER-
!
VICE MUST BE WIRED DIRECTLY TO THE FIRE-
PLACE JUNCTION BOX.
Intermittent
Pilot Ignition
Figure 9.
Gas Control System
Step 5. 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
(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 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-
• Locate the gas line access hole in the outer casing of
• The gas line may be run from either side of the fireplace
• Open the fireplace lower grille, insert the gas supply line
• When attaching the pipe, support the control so that the
• After the gas line installation is complete, use a soap
• Insert insulation from the outside of the fireplace and
Flame Sensor
• After the gas line installation is complete, all connections
Rod
Step 6. Gas Pressure Requirements
Pressure requirements for Heat-N-Glo Lifestyle Products 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).
13
tuting for these components, please consult local codes
for compliance.
the fireplace.
provided the hole in the outer wrap does not exceed 2" in
diameter and it does not penetrate the actual firebox.
through the gas line hole, and connect it to the shut-off
valve.
lines are not bent or torn.
solution to carefully check all gas connections for leaks.
WARNING: DO NOT USE AN OPEN FLAME
!
TO CHECK FOR GAS LEAKS.
pack the insulation tightly to totally seal between the
pipe and the outer casing.
must be tightened and checked for leaks with a commer-
cially-available, non-corrosive leak check solution. Be sure
to rinse off all leak check solution following testing.
GAS LINE CONTROL
ACCESS VALVE
Figure 10. Gas Supply Line
Gas Pressure
Min. Inlet Pressure 5.0 inches w.c.
Max. Inlet Pressure 14.0 inches w.c.
Manifold Pressure 3.5 inches w.c.
USE A WRENCH
ON SHUT-OFF VALVE
WHEN TIGHTENING
GAS LINE.
GAS
VALVE
FLEX
CONNECTOR
MANUAL
SHUT-OFF VALVE
NG LP
11.0 inches w.c.
14.0 inches w.c.
10.0 inches w.c.
u