Step 7 Gas Pressure Requirements - Heat-N-Glo SL-950TR Installer's Manual

The gas line should be
installed by a qualified
service technician.
Step 7
Gas Pressure
Requirements
41
• At the gas line access hole, use insulation to
repack 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.
Pressure requirements for Heat-N-Glo gas fireplaces
are shown in the table below.
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.
Some gas control valves have inlet supply and
manifold pressure tappings on the face of the valve.
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).
USE A WRENCH ON
SHUT-OFF VALVE
WHEN TIGHTENING
GAS LINE.
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.