SERVICING
56
Open to
Atmosphere
Open to
Atmosphere
Inlet Pressure
Manifold
Pressure
WHITE ROGERS MODEL 36G 1-STAGE GAS VALVE
Outlet
Inlet
Outlet Pressure
Tap
Inlet Pressure
Tap
Gas Valve
On/Off
Switch
Manometer
Open to
Atmosphere
Manometer
Hose
Open to
Atmosphere
Manometer
Hose
High Pressure
Adjust
Low Pressure
Adjust
WHITE ROGERS MODEL 36G 2-STAGE GAS VALVE
Gas Valve On/Off
Selector Switch
Pressure Regulator
(under cap screw)
Outlet
Pressure
Tap
Open to
Atmosphere
Manifold
Pressure
Open to
Atmosphere
Inlet Pressure
Inlet
Pressure
Tap
HONEYWELL MODEL VR8215 1-STAGE GAS VALVE
MEASURING INLET AND MANIFOLD GAS PRESSURE
With Power ON:
WARNING
Line Voltage now present.
3. Put furnace into heating cycle and turn on all other gas
consuming appliances.
For
NATURAL GAS:
a.
Inlet pressure should be a nominal 7" w.c.
b.
(2 stage heat models only) Manifold pressure on
low stage should be
2.0” w.c. ± .3"w.c.
c.
Manifold pressure for 1 stage heat models and high
stage for 2 stage heat models should be 3.5” ±
.3"w.c.
For
PROPANE GAS:
a.
Inlet pressure should be a nominal 11" w.c.
b.
(2 stage heat models only) Manifold pressure on
low stage should be 6" w.c.
c.
Manifold pressure for 1 stage heat models and high
stage for 2 stage heat models should be 10” w.c.
Manifold Gas Pressure
Natural Gas
3.5" w.c.
Propane Gas
10.0" w.c.
Single Stage
Range
Nominal
Natural
Low Stage
1.6 - 2.2" w.c.
2.0" w.c.
High Stage
3.2 - 3.8" w.c.
3.5" w.c.
Propane
Low Stage
5.7 - 6.3" w.c.
6.0" w.c.
High Stage
9.7 - 10.3" w.c.
10.0" w.c.
Manifold Gas Pressure
Gas
Two Stage
If operating pressures differ from above, make necessary
pressure regulator adjustments, check piping size, etc., and/
or consult with local utility.
