Step 7 Gas Pressure Requirements - Heat-N-Glo 8000 DVTFL Installer's Manual

The gas line should be
installed by a qualified
service technician.
Step 7
Gas Pressure
Requirements
• 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 be-
tween the pipe and the outer casing.
Figure 29. 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.
30