20
Pressure Regulator
Adjustment
(Under Cap Screw)
Gas Valve
On/Off
Selector
Switch
INLET
OUTLET
Inlet Pressure
Tap
Outlet Pressure
Tap
White-Rodgers Model 36J22
1.
Turn OFF gas to furnace at the manual gas shutoff
valve external to the furnace.
2. Turn OFF all electrical power to the system.
3. Inlet pressure tap connections:
White-Rodgers valve:
Back inlet pressure test screw (inlet pressure tap ) out
one turn (counterclockwise, not more than one turn).
4. Attach a hose and manometer to the inlet pressure tap
(White-Rodgers valve).
5. Turn ON the gas supply.
6. Turn On power and close thermostat “R” and “W” con-
tacts to provide a call for heat.
7.
Using a leak detection solution or soap suds to check
for leaks at outlet pressure tap plug Bubbles forming
indicate a leak. SHUT OFF GAS AND REPAIR ALL
LEAKS IMMEDIATELY!
8.
Measure the gas supply pressure with burners firing.
Adjust supply pressure using the
Inlet Gas Supply
Pressure
table shown below. If supply pressure read-
ing differs from the table, make necessary adjustments
to pressure regulator, gas piping size, etc., and/or
consult with local gas utility.
Natural Gas
Minimum: 4.5" w.c.
Maximum: 10.0" w.c.
Propane Gas Minimum: 11.0" w.c. Maximum: 13.0" w.c.
INLET GAS SUPPLY PRESSURE
9. Turn OFF all electrical power and gas supply to the
system.
10. Remove the manometer hose from the hose barb
fitting or inlet pressure tap.
11. Replace inlet pressure tap:
White-Rodgers valve:
Turn inlet pressure test screw in to seal pressure port
(clockwise, 7 in-lb minimum).
12. Retest for leaks. If bubbles form, shut down gas and
repair leaks immediately.
13. Turn ON electrical power and gas supply to the system.
14. Turn valve switch ON.
position.
8. Replace the door on the front of the furnace.
9. Open the manual gas valve external to the furnace.
10. Turn on the electrical power supply to the furnace.
11. Set the room thermostat to the desired temperature.
NOTE: There is an approximate 30 second delay be
-
tween thermostat energizing and burner firing.
Furnace Shutdown
1. Set the thermostat to lowest setting.
2.
Turn off the electrical power supply to the furnace.
3. Remove the burner compartment door.
4. White-Rodgers valve:
Push switch to the OFF position.
5.
Close manual gas shutoff valve external to the furnace.
6. Replace the door on the unit.
Gas Supply Pressure Measurement
CAUTION
To prevent unreliable operation or equipment damage, the
inlet gas supply pressure must be as specified on the unit
rating plate with all other household gas fired appliances
operating.
WARNING
HIGH VOLTAGE!
Disconnect all power before servicing or
installing this unit. Multiple power sources
may be present. Failure to do so may cause
property damage, personal injury or death.
The line pressure supplied to the gas valve must be within
the range specified below. The supply pressure can be mea
-
sured at the gas valve inlet pressure tap or at a hose fitting
installed in the gas piping drip leg. The supply pressure must
be measured with the unit OFF. To measure inlet pressure,
use the following procedure.
NOTE: If measuring gas pressure at the drip leg or
Honeywell gas valve, a field-supplied hose barb
fitting must be installed prior to making the hose
connection. If using the inlet pressure tap on the
White-Rodgers gas valve, then use the 36G/J Valve
Pressure Check Kit, Part No. 0151K00000S.
