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The gas line should be
installed by a qualified
service technician.
Step 7
Gas Pressure
Requirements
35
• At the gas line access hole, use insulation to re-
pack the space around the gas pipe.
• Insert insulation from the outside of the fireplace
and pack the insulation tightly to totally seal
between the pipe and the outer casing.
Figure 32. Gas Supply Line
Pressure requirements for Heat-N-Glo gas
fireplaces are shown in the table below.
Pressure
Natural Gas
Minimum
Inlet Pressure
Maximum Inlet
14.0 inches
Gas Pressure
Manifold
Pressure
A one-eighth (1/8) inch (3 mm) N.P.T. plugged
tapping is provided on the outlet side of the gas
control for a test gauge connection to measure the
manifold pressure. To measure inlet pressure,
provisions must be made to attach a test gauge to
a one-eighth (1/8) inch (3 mm) N.P.T. plugged
tapping immediately upstream of the gas supply
connection to the fireplace.
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).
Propane
5.0 inches
11.0 inches
w.c.
w.c.
14.0 inches
w.c.
w.c.
3.5 inches
10.0 inches
w.c.
w.c.
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