
35
f. Remove regulator cover screw from the
outlet pressure regulator adjust tower and
turn screw clockwise to increase pressure or
counterclockwise to decrease pressure. Replace
regulator cover screw.
g. Turn off all electrical power and gas supply to the
system.
h. Remove the manometer hose from the hose barb
fitting or outlet pressure boss.
i. Remove the 1/8” NPT hose barb fitting from the
outlet pressure tap. Replace the outlet pressure
boss plug and seal with a high quality thread
sealer.
WARNING
HIGH VOLTAGE
Disconnect ALL electrical power and shut off
gas supply before servicing or installing this
unit. Multiple power sources may be present.
Failure to do so may cause property damage,
personal injury or death.
7. Turn on gas to furnace and check for leaks. If
leaks are found, repair and then reinstall burner
compartment door.
8. Turn on electrical power and verify proper unit
operation.
Pressure Regulator
Adjustment
(Under Cap Screw)
Gas Valve
On/Off
Selector
Switch
INLET
OUTLET
Inlet Pressure
Tap
Outlet Pressure
Tap
White-Rodgers Model 36J22 (Single-Stage)
Gas Valve On/Off
Selector Switch
Inlet
Pressure
Tap
Pressure Regulator
(under cap screw)
Outlet
Pressure
Tap
Honeywell Model VR8215
Gas
Rate
Range
Nominal
High Stage 9.7 to 10.3" w.c. 10.0" w.c.
Low Stage 5.7 to 6.3" w.c. 6.0" w.c.
Propane Gas
Manifold Gas Pressure
S-308 Checking Hot Surface Ignitor
Single stage furnaces use a 115 volt silicon carbide igniter
(p/n 0130F00008) with 17-second warm up time.
WARNING
Disconnect ALL power before servicing.
1. Remove burner compartment door to gain access to
the ignitor.
2. Ignitor cool - approximately 70 - 77°F.
3. Disconnect the ignitor from the Ignition Control.
4. Using an ohmmeter measure the resistance of the
ignitor: at room temperature a normal reading will be
37 - 68 ohms.
5. Reconnect ignitor.
WARNING
Line Voltage now present.
6. Place unit in heating cycle, measure current draw of
ignitor during preheat cycle.
a. Turn off all electrical power and gas supply to the
system.
b. Remove the manometer hose from the outlet
pressure boss.
c. Remove the 1/8” NPT hose barb fitting from the
outlet pressure tap. Replace the outlet pressure
boss plug and seal with a high quality thread
sealer.
WARNING
HIGH VOLTAGE
Disconnect ALL electrical power and shut off gas supply
before servicing or installing.
7. Turn on gas to furnace and check for leaks. If
leaks are found, repair and then reinstall burner
compartment door.
8. Turn on electrical power and verify proper unit
operation. Make sure furnace operates at the proper
manifold pressure at both high and low stage outputs.
SERVICING