66
SERVICING
8. Remove regulator cover screw from the low (LO) outlet
pressure regulator adjust tower and turn screw clock-
wise to increase pressure or counterclockwise to de-
crease pressure. Replace regulator cover screw.
9. Close thermostat “R”, “W1” and “W2” contacts to pro-
vide a call for high stage heat.
10. Remove regulator cover screw from the high (HI) outlet
pressure regulator adjust tower and turn screw clock-
wise to increase pressure or counterclockwise to de-
crease pressure. Replace regulator cover screw.
11. Turn off all electrical power and gas supply to the sys-
tem.
12. Remove the manometer hose from the hose barb fitting
or outlet pressure tap.
13. Replace outlet pressure tap:
White-Rodgers 36J54 valve: Turn outlet pressure test
screw in to seal pressure port (clockwise, 7 in-lb mini-
mum).
14. Turn on electrical power and gas supply to the system.
15. Close thermostat contacts “R” and “W1/W2” to energize
the valve.
Range
Nom inal
Natural
Low Stage
1.6 - 2.2" w .c.
1.9" 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
Using a leak detection solution or soap suds, check for leaks at
outlet pressure tap plug (Honeywell valve) or screw (White-Rodg-
ers valve). Bubbles forming indicate a leak. SHUT OFF GAS
AND REPAIR ALL LEAKS IMMEDIATELY!
NOTE:
For gas to gas conversion, consult your dealer for
appropriate conversion.
T
O 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.
CAUTION
T
O 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.
CAUTION
Gas Valve On/Off
Selector Switch
Regulator
Vent
High Fire
Regulator
Adjust
Low Fire
Regulator
Adjust
Honeywell Model VR9205 (Two-Stage)
Measuring Gas Pressure: Two-Stage Valves Cont'd
i
Manometer
Manometer
Hose
Common
Terminal(C)
High Fire Coil
Terminal (HI)
Low Fire Coil
Terminal (LO)
Inlet Pressure Tap
1/8 NPT
Open to
Atmosphere
Outlet Pressure Tap
1/8 NPT
Honeywell Model VR9205 Connected to Manometer
1. Remove regulator cover screw from the low (LO) outlet
pressure regulator adjust tower and turn screw clock-
wise to increase pressure or counterclockwise to de-
crease pressure. Replace regulator cover screw.
a. Close thermostat “R” and “W” contacts to provide a
call for heat.
b. Remove regulator cover screw from the high (HI) out-
let pressure regulator adjust tower and turn screw
clockwise to increase pressure or counterclockwise
to decrease pressure. Replace regulator cover screw.
c. Turn off all electrical power and gas supply to the sys-
tem.
d. Remove the manometer hose from the outlet pres-
sure boss.
e. 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.
