20
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
Gas Line
Gas
Shutoff
Valve
Gas Line
To Furnace
Drip Leg Cap
With Fitting
Manometer Hose
Measuring Inlet Gas Pressure (Alt. Method)
Gas Manifold Pressure Measurement and Adjustment
T
O
PREVENT
UNRELIABLE
OPERATION
OR
EQUIPMENT
DAMAGE
,
THE
GAS
MANIFOLD
PRESSURE
MUST
BE
AS
SPECIFIED
ON
THE
UNIT
RATING
PLATE
. O
NLY
MINOR
ADJUSTMENTS
SHOULD
BE
MADE
BY
ADJUSTING
THE
GAS
VALVE
PRESSURE
REGULATOR
.
CAUTION
HIGH VOLTAGE !
D
ISCONNECT
ALL
POWER
BEFORE
SERVICING
OR
INSTALLING
THIS
UNIT
. M
ULTIPLE
POWER
SOURCES
MAY
BE
PRESENT
. F
AILURE
TO
DO
SO
MAY
CAUSE
PROPERTY
DAMAGE
,
PERSONAL
INJURY
OR
DEATH
.
WARNING
This valve is shipped from the factory with the regulator preset
(see control label).
Consult the appliance rating plate to ensure burner manifold
pressure is as specified. If another outlet pressure is required,
follow these steps.
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. Outlet pressure tap connections:
White-Rodgers valve:
Back outlet pressure test screw (outlet pressure tap)
out one turn (counterclockwise, not more than one
turn).
4. Attach a hose and manometer to the outlet pressure
tap.
5. Turn ON the gas supply.
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”
contacts 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 reading
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.