25
Step 6
Gas Pressure
Requirements
Pressure requirements for Heat-N-Glo gas stoves
are shown in the table below.
Pressure
Natural Gas
Propane
Minimum
5.0 inches
11.0 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 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. On some models there may be a tap for the
manifold and inlet pressure on the face of the valve.
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 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).
Figure 23 GAS SUPPLY CONNECTION
