Furnace Shutdown; Gas Supply Pressure Measurement; White-Rodgers 36F22 Gas Valve - Amana GUCA Installation Instructions Manual

Furnace Shutdown

1. Set the thermostat to the lowest setting.
The integrated control will close the gas valve and
extinguish flame. Following a 15 second delay, the
induced draft blower will be de-energized. After a 60,
90, 120, or 180 second delay period (field selectable),
the circulator blower will be de-energized.
2. Remove the burner compartment door and move the
furnace gas valve manual control to the OFF position.
3. Close the manual gas shut-off valve external to the
furnace.
4. Replace the burner compartment door.

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.

White-Rodgers 36F22 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 burners operating. To
measure the gas supply pressure, use the following proce-
dure.
Gas Valve
On/Off
Selector
Switch
INLET
Inlet Pressure Tap
Pressure Regulator
(Side of Valve)
(Under Cap Screw)
White-Rodgers Model 36F22
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 either the gas valve inlet
pressure tap or the gas piping drip leg.
OUTLET
Outlet (Manifold)
Pressure Tap
Adjustment
Gas Line
Gas Shutoff Valve
Drip Leg Cap
With Fitting
Measuring Inlet Gas Pressure (Alt. Method)
NOTE: At either location, a hose fitting must be installed
prior to making the hose connection.
3. Turn ON the gas supply and operate the furnace and all
other gas consuming appliances on the same gas
supply line.
4. Measure furnace gas supply pressure with burners
firing. Supply pressure 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. Reinstall plug before
turning on gas to furnace.
6. Turn OFF any unnecessary gas appliances started in
step 3.
33
Gas Line
To Furnace
Open To
Atmosphere
Manometer Hose
Manometer