SERVICING
38
WARNING
High Voltage!
Disconnect all power before servicing
or installing this unit. Multiple power
sources may be present. Failure to do
so may cause property damage, personal
injury or death.
5.
Disconnect manometer after turning off gas at manual
shutoff valve. Reinstall plug before turning on gas to
furnace.
6. Turn OFF any unnecessary gas appliances started in
step 3.
7. Turn on gas to furnace and check for leaks. If leaks are
found, repair and then reinstall burner compartment door.
8. Turn on electrical power and verify proper unit operation.
WARNING
High Voltage!
Disconnect all power before servicing
or installing this unit. Multiple power
sources may be present. Failure to do
so may cause property damage, personal
injury or death.
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
3.5
Measuring Manifold Gas Pressure
(36J54 Valve)
WARNING
High Voltage!
Disconnect ALL electrical power and shut off
gas supply before servicing or installing.
Manifold Gas Pressure
Gas
Rate
Range
Nominal
Natural Gas
High Stage
3.2 to 3.8”
w.c.
3.5” w.c.
Low Stage
1.6 to 2.2”
w.c.
1.9” w.c.
WARNING
High Voltage!
Disconnect all power before servicing
or installing this unit. Multiple power
sources may be present. Failure to do
so may cause property damage, personal
injury or death.
WARNING
High Voltage!
Disconnect ALL electrical power and shut off
gas supply before servicing or installing.
Manifold Gas Pressure
Gas
Rate
Range
Nominal
Propane Gas
High Stage 9.7 to 10.3”
w.c.
10.0” w.c.
Low Stage 5.7 to 6.3” w.c.
6.0” w.c.
CHECKING HOT SURFACE IGNITOR
120V Silicon Nitride Igniter
- Amana® Brand and
Goodman® Brand furnaces use a 120V silicon nitride
igniter for ignition. The normal operating temperature is
approximately 2156°F - 2678°F.
WARNING
Disconnect ALL power before servicing.
1. Remove burner compartment door to gain access to
the ignitor.
2. Ignitor cool - approximately 70 - 77°F.
3. Disconnect the ignitor from the Ignition Control.
4. Using an ohmmeter measure the resistance of the ignitor:
120 Volt Silicon Nitride : 120V Nitride Igniter should read
between 37 to 68 ohms.
5. Reconnect ignitor.
