Step 6 The Gas Supply Line; Step 7 Gas Pressure Requirements - Heat & Glo SL-750TRS-IPI-D Owner's Manual

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
fitter).
NOTE: Before the first firing of the appliance, 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 appliance 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 appliance.
• The gas line may be run from either side of the appli-
ance provided the hole in the outer wrap does not exceed
2" in diameter and it does not penetrate the actual firebox.
• Open the appliance 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.
WARNING: DO NOT USE AN OPEN FLAME
!
TO CHECK FOR GAS LEAKS.
• Insert insulation from the outside of the appliance 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.
Heat & Glo • SL-350TRS-C, SL-550/750TRS-IPI-D • 2065-985 Rev. J • 5/06
GAS ACCESS
Figure 34. Gas Supply Line
Step 7. Gas Pressure Requirements
Pressure requirements for Heat & Glo gas appliances are
shown in the table below.
Pressure Natural Gas
Minimum 5.0 inches
Inlet Pressure
Maximum Inlet 14.0 inches
Gas Pressure
Manifold 3.5 inches
Pressure
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 flat 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 appliance 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 appliance 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).
USE A WRENCH ON
SHUT-OFF VALVE WHEN
TIGHTENING GAS LINE
MANUAL
SHUT-OFF VALVE
GAS VALVE
FLEX
CONNECTOR
Propane
11.0 inches
w.c. w.c.
14.0 inches
w.c. w.c.
10.0 inches
w.c. w.c.
39