Owner's Manual

31
MAINTENANCE OF YOUR WATER HEATER
Replacement Parts
IMPORTANT: The following maintenance procedures are for
the FVIR System components and should be performed by a
qualified technician.
Replacement parts may be ordered from Sears Parts and Service
Centers or by calling 1-800-4-MY-HOME (1-800-469-4663).
When ordering replacement parts, always have the following
information ready:
1. model, serial, and product number
2. type of gas
3. item number
4. parts description
See the Parts Order List section for a list of available repair parts.
External Inspection & Cleaning of the
Base-Ring Filter
1. At least annually, check the base-ring filter (Figure 40) for
any dust or debris that may have accumulated on the filter
screen. NOTE: If the water heater is located in an area that
is subjected to lint and dirt, it may be necessary to check
the base-ring filter more frequently.
2. Follow the Lighting Instructions to turn off the water heater
and allow it to cool for 10 minutes before attempting to clean
the base-ring filter.
3. Use a vacuum cleaner with a hose attachment to remove
any dust or debris that may have accumulated on the filter.
NOTE: If unable to inspect or clean the base-ring filter, follow
the “Cleaning the Combustion Chamber and Flame-arrestor”
instructions.
4. After the base-ring filter has been cleaned, follow the
Lighting Instructions to return the water heater to service.
Removing the Manifold/Burner Assembly
1. 1. Turn off the gas to the water heater at the manual
shut-off valve (Figure 11).
Move the ON/OFF switch on the gas control valve/2.
thermostat to the “OFF” position to turn off the water
heater. (Figure 34).
Pilot
Tube
Manifold
Tube
Igniter
Wire
Wiring Harness
ON
OFF
STATUS
A
B
C
•
•
VE
R
Y
HOT
HOT
LOW
VA C
FIGURE 34.
Remove the outer door.3.
Remove the two screws (1/4” nut driver) securing the 4.
manifold door assembly to the combustion chamber
(Figure 35).
Manifold Screw (2)
Manifold Component Block
Manifold Door
Thermal Switch
Pilot Tube
Manifold Tube
Viewport
Wiring
Harness
Gas Control Valve/
Thermostat
FV Sensor
FIGURE 35.
Disconnect the pilot tube (7/16” wrench), the igniter wire, 5.
and manifold tube (3/4” wrench) at the gas control valve/
thermostat. Also use needle nose pliers to disconnect
the yellow TCO wire leads from the thermal switch on the
manifold door. NOTE: L.P. Gas systems use reverse (left-
hand) threads on the manifold tube.
Grasp the manifold tube and push down slightly to free the 6.
manifold and pilot tube.
Carefully remove the manifold assembly from the burner 7.
compartment.
NOTE: Be sure not to damage internal parts.
Removing the Burner from the Manifold/
Burner Assembly
Natural Gas (Low Nox) & L.P. Gas Burner
1. Take off the burner by removing the two (2) screws located
underneath the burner.
2. Check the burner to see if it is dirty or clogged. The burner
may be cleaned with soap and hot water (Figure 36).
BURNER
(BOTTOM VIEW)
SCREWS
FIGURE 36.
Replacing the Pilot/Igniter -
Flame Sensor Assembly
Remove the manifold assembly as directed previously.1.
Lif t the ret ainer clip straight up from the bac k of the manifold 2.
component block (using a flat-blade screwdriver), then
remove the manifold component block from the manifold
door
(Figure 37).
Using a 7/16” wrench, loosen the nut 3.
securing the pilot tube to the pilot assembly.
NOTE: To prevent any bending of the pilot bracket, use
pliers to hold the pilot assembly bracket while loosening the
pilot nut.