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Heat & Glo • Everest • 750-900 Rev. o • 10/08
23
Figure 22. Gas Supply Line
• At the gas line access hole, use insulation to re-pack the
space around the gas pipe.
• Insert insulation from the outside of the fi replace and pack
the insulation tightly to totally seal between the pipe and
the outer casing.
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 Commonwealth of Massachusetts installation
must be performed by a licensed plumber or gas
fi tter).
NOTE: Before the fi rst fi ring of the fi replace, 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 ap-
proved) 1/2 inch (13mm) tee-handle manual shut-off
valve and a listed fl exible 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 fi replace.
• The gas line may be run from either side of the fi replace
provided the hole in the outer wrap does not exceed 2 1/2”
in diameter and it does not penetrate the actual fi rebox.
• The gap between the supply piping and gas access
hole can be plugged with non-combustible insulation to
prevent cold air infi ltration.
• Open the fi replace 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, use a soap so-
lution to carefully check all gas connections for leaks.
!
Step 7. Gas Pressure Requirements
Pressure requirements for Heat & Glo gas fi replaces are
shown in the table below.
USE A WRENCH
ON SHUT-OFF
VALVE WHEN
TIGHTENING
GAS LINE
MANUAL
SHUT-OFF VALVE
CONTROL
VALVE
GAS LINE
ACCESS
HOLE
GAS
VALVE
FLEX
CONNECTOR
WARNING: DO NOT USE AN OPEN FLAME TO
CHECK FOR GAS LEAKS.
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.
Use a small fl at blade screwdriver to crack open the screw
in the center of the tap. Position a rubber hose over the tap
to obtain the pressure reading.
The fi replace 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 fi replace 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).
Pressure Natural Gas Propane
Minimum inlet pressure
5.0 inches
w.c.
11.0 inches
w.c.
Maximum inlet gas
pressure
14.0 inches
w.c.
14.0 inches
w.c.
Manifold pressure
3.5 inches
w.c.
10.0 inches
w.c.