30
• The gap between the
supply piping and gas
access hole can be
plugged with non-
combustible insulation
to prevent cold air
infiltration.
• Insert insulation from
the outside of the
fireplace and pack the
insulation tightly to
totally seal between the
pipe and the outer
casing.
• The gas line
should be
installed by a
qualified service
technician.
Figure 25. Gas Supply Line
Step 7
Gas Pressure
Requirements
Pressure requirements for these gas fireplaces are
shown in the table below.
Pressure
Natural Gas
Propane
Minimum
7.0 inches
12.0 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).
GAS CONTROLS
USE A WRENCH
ON SHUT-OFF VALVE
WHEN TIGHTENING
GAS LINE.
MANUAL
SHUT-OFF
VALVE
GAS VALVE
FLEX
CONNECTOR