White-Rodgers 36G22 Gas Valve; Gas Manifold Pressure Measurement And Adjustment; White-Rodgers 36F22 Gas Valve - Amana GUCA Installation Instructions Manual

White-Rodgers 36G22 Gas Valve

The line pressure supplied to the gas valve must be within
the range specified below. The supply pressure can be
measured 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
the gas supply inlet pressure, use the following procedure.
Gas Valve
On/Off
Selector
Switch
OUTLET
Pressure Regulator
Adjustment
(Under Cap Screw)
White-Rodgers Model 36G22
1. Turn OFF gas to furnace at the manual gas shutoff
valve external to the furnace.
2. Using 3/32 hex wrench, loosen inlet pressure tap screw
one turn.
3. Connect a 5/16 inch hose and calibrated water manom-
eter to the gas valve inlet pressure tap. The hose
should overlap the tap by 3/8 inch.
4. Turn ON the gas supply and operate the furnace
5. Leak test. Using a leak detection solution or non-
chlorine soap suds, check for leaks at hose connection.
Bubbles forming indicate a leak. SHUT OFF GAS AND
FIX ALL LEAKS IMMEDIATELY BEFORE PROCEED-
ING TO NEXT STEP!
4. Measure furnace gas supply pressure. Supply pres-
sure must be within the range specified in the table
below.
Inlet Gas Supply Pressure
Natural Gas Minimum:5.0" W.C. Maximum :10.0" W.C.
Propane Gas Minimum:11.0" W.C. Maximum :13.0" W.C.
If supply pressure differs from above, make necessary
adjustments to pressure regulator, gas piping size, etc.,
and/or consult with local gas utility.
5. Turn OFF gas to furnace at the manual shutoff valve
and disconnect manometer and hose. Reinstall plug
before turning on gas to furnace.
6. Seal pressure port. Tighten inlet pressure tap screw
clockwise 7 in-lbs. minimum.
7. Retest for leaks. If bubbles form, shut down gas and fix
leaks immediately.
8. Turn valve switch ON.
Inlet Pressure
Tap
INLET
Outlet Pressure
Tap
GAS MANIFOLD PRESSURE MEASUREMENT AND
ADJUSTMENT
CAUTION
To prevent unreliable operation or
equipment damage, the gas manifold
pressure must be as specified on the unit
rating plate.
should be made by adjusting the gas valve
pressure regulator.

White-Rodgers 36F22 Gas Valve

Only small variations in gas pressure should be made by
adjusting the gas valve pressure regulator. The manifold
pressure must be measured with the burners operating. To
measure and adjust the manifold pressure, use the follow-
ing procedure.
1. Turn OFF gas to furnace at the manual gas shutoff
valve external to the furnace.
2. Connect a calibrated water manometer (or appropriate
gas pressure gauge) at the gas valve outlet pressure
tap (refer to gas valve figure in previous section).
3. Turn ON the gas supply and operate the furnace.
4. Measure gas manifold pressure with burners firing.
Adjust manifold pressure using the table below.
Manifold Gas Pressure
Natural Gas
Propane Gas
The final manifold pressure must not vary more
than ± 0.3 " w.c. from the above specified pressures. Any
necessary major changes in gas flow rate should be made
by changing the size of the burner orifice.
5. To adjust the gas valve pressure regulator, remove the
regulator cap.
6. Turn the adjustment screw clockwise to increase the
pressure, or counterclockwise to decrease the pres-
sure.
7. Securely replace the regulator cap.
8. Turn OFF gas to furnace at the manual shutoff valve
and disconnect manometer.
9. Reinstall gas valve outlet pressure tap plug before
turning on gas to furnace.
White-Rodgers 36G22 Gas Valve
This valve is shipped from the factory with the regulator
preset (see control label).
Consult the appliance rating plate to ensure burner mani-
fold pressure is as specified. If another outlet pressure is
required, follow these steps.
1. Turn OFF all electrical power to the system.
2. Using a 3/32 inch hex wrench, loosen outlet pressure
tap screw one turn. Do not remove screw.
34
Only minor adjustments
3.5" w.c.
10.0" w.c.