17
Single Stage Models
(White-Rodgers 36J22 valves):
Close thermostat “R” and “W” contacts.
Two-Stage Models
(White-Rodgers 36G54 valve):
Close thermostat contacts “R” and “W1” contacts for
low heat stage heating ONLY; do not energize high
stage heat.
7. Using a leak detection solution or soap suds,
check for leaks at outlet pressure boss plug screw
(White-Rodgers valve). Bubbles forming indicate a
leak. SHUT OFF GAS AND REPAIR ALL LEAKS
IMMEDIATELY!
8. Measure the gas manifold pressure with burners
firing. Adjust manifold pressure using the
Manifold
Gas Pressure
table.
9. Regulator adjustment:
Single Stage Models
(White-Rodgers 36J22 valves):
Remove regulator cover screw from the outlet
pressure regulator and turn screw clockwise to
increase pressure or counterclockwise to decrease
pressure. Replace regulator cover screw.
Regulator Cover
Screw
Mode
10.0
White-Rodgers Model 36J22 Connected to Manometer
Two-Stage Models
(White-Rodgers 36G54 valve):
Remove regulator cover screw from the low (LO)
outlet pressure regulator adjust tower and turn screw
clockwise to increase pressure, or counterclockwise
to decrease pressure.
Manometer
Manometer
Hose
High Fire Regulator
Adjust
Regulator
Vent
On/Off Switch
High Fire Coil
Terminal (HI)
Coaxial Coil
Terminal (M)
Common
Terminal(C)
White-Rodgers Model 36J54 Connected to Manometer
Mode
3.5
White-Rodgers Model 36G54 Connected to Manometer
Entergize the “R”, “W1”, and “W2” contacts for high
stage heat. Remove regulator cover screw from the HI
outlet pressure regulator adjust tower and turn screw
clockwise to increase pressure or counterclockwise
to decrease pressure.
Range
Nominal
Low Stage
1.6 - 2.2" w.c. 2.0" w.c.
High or Single Stage 3.2 - 3.8" w.c. 3.5" w.c.
Low Stage
5.7 - 6.3" w.c. 6.0" w.c.
High or Single Stage 9.7 - 10.3" w.c. 10.0" w.c.
Manifold Gas Pressure
Gas
Natural
LP
10.Turn OFF all electrical power and gas supply to the
system.
11. Remove the manometer hose from the hose barb
fitting or outlet pressure boss.
12.Replace outlet pressure tap:
White-Rodgers 36J22 or 36G54 valve: Turn outlet
pressure test screw in to seal pressure port
(clockwise, 7 in-lb minimum).
13.Turn ON electrical power and gas supply to the
system.
14.Close thermostat contacts to provide a call for heat.
15.Retest for leaks. If bubbles form, SHUT OFF GAS
AND REPAIR ALL LEAKS IMMEDIATELY!
Gas BTU Input (Natural Gas Only) Check
To measure the gas input use a gas meter and proceed
as follows:
1. Turn off gas supply to all other appliances except the
unit.
2. With the unit operating, time the smallest dial on the
meter for one complete revolution. If this is a 2 cubic
foot dial, divide the seconds by 2; if it is a 1 cubic foot
dial, use the seconds as is. This gives the seconds
per cubic foot of gas being delivered to the unit.
3. INPUT=GAS HTG VALUE x 3600 / SEC. PER CUBIC
FOOT
Example:
Natural gas with a heating value of 1000 BTU per
cubic foot and 34 seconds per cubic foot as determined by
Step 2, then:
Input = 1000 x 3600 / 34 = 106,000 BTU per Hour.
NOTE:
BTU content of the gas should be obtained
from the gas supplier. This measured input must not
be greater than shown on the unit rating plate.
4. Relight all other appliances turned off in step 1. Be
sure all pilot burners are operating.
Main Burner Flame Check
Flames should be stable, soft and blue (dust may cause
orange tips but they must not be yellow) and extending
directly outward from the burner without curling, floating
or lifting off.
Temperature Rise Check
Check the temperature rise through the unit by placing
thermometers in supply and return air registers as close
