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Piezoelectric
Igniter System
The piezoelectric igniter system consists of the igniter
button, electrode, and wire. The pilot is ignited by an
electric spark generated when the igniter button is
pressed.
(See Figure 36).
_.o,_,,
THERMOPILE
d. ,LOT
_
_
=/PILOT/
/" _:::_ ),_'_
_ ¢_.._k'_ THERMOPILE
/ _,_,',_
BRACKET
ELECTRODE _
_IGN
ITE _IBRuETTO_L
ECTROD
E
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FIGURE 36.
Testing the Igniter System
Turn off the gas to the water heater at the manual gas shut-off
valve. Watch the electrode tip while activating the igniter. A
visible spark should jump from the electrode. To avoid shock,
do not touch the burner or any metal part on the pilot or pilot
assembly.
If no spark is visible, check the wire connections
and make sure the electrode is not broken. Replace the igniter
if defective.
Dirt and rust on the pilot or electrode
tip can
prevent the igniter spark. Wipe clean with a damp cloth and dry
completely.
Rust can be removed from the electrode tip and
metal surfaces by lightly sanding with an emery cloth or fine
grit sandpaper.
Removing
and Replacing
the Gas Control
Valve/Thermostat
IMPORTANT: This water heater has a resettable thermal switch
installed.
Do not attempt to disable
or modify
this feature
in any way. Use only factory authorized
replacement
parts.
IMPORTANT:
This gas control
valve/thermostat
is shipped
from the factory
as a natural gas unit. However, it may be
converted to use LP gas. Before installing this gas control valve/
thermostat,
make sure that it is configured for the type of gas
that you are using. Refer to the "Gas Conversion" section.
Removing the Gas Control Valve/Thermostat:
1.
Turn the gas control/temperature
knob to the "OFF" position
(Figure 24B).
2.
Turn off the gas at the manual shut-off valve on the gas
supply pipe (Figure 2).
3.
Drain the water heater. Refer to the section of "Draining and
Flushing" and follow the procedure.
4.
Disconnect the igniter wire from the igniter lead wire. Use
needle nose pliers to disconnect the red (+) and white (-)
thermopite wires. Disconnect the pilot tube (7/16" wrench) and
manifold tube (3/4" wrench) at the gas control valve/thermostat
(Figure 28).
5.
Refer to "Gas Piping" (Figure 2) and disconnect the ground
joint union in the gas piping. Disconnect the remaining pipe
from the gas control valve/thermostat.
6.
To remove
the
gas
control
valve/thermostat,
thread
a 4" section of gas pipe into the inlet and use it to turn the
gas control valve/thermostat
(counterclockwise.)
Do not
use a pipe wrench or equivalent to grip body. Damage may
result, causing leaks. Do not insert any sharp objects into
the inlet or outlet connections.
Damage to the gas control
valve/thermostat
may result.
Replacing
the Gas Control
Valve/Thermostat:
To replace
the gas control valve/thermostat,
reassemble
in
reverse order. When replacing the gas control valve/thermostat,
thread a 4" section of gas pipe into the inlet and use it to turn
the gas control valve/thermostat
(clockwise).
DO NOT OVER
TIGHTEN; damage may result.
•
Be sure
to use approved
Teflon®
tape
or pipe joint
compound on the gas piping connections and fitting on the
back of the gas control valve that screws into the tank.
•
Be sure to remove the pilot ferrule nut from the new gas
control valve/thermostat.
Turn the main gas supply on and check the gas supply
connections for leaks. Correct any leak found.
Next, light
the pilot and main burner, then check the manifold tube and
pilot tube connections
for leaks. Correct any leak found.
Use an approved
noncorrosive
leak detection
solution.
If such a solution is not available, use a mixture of hand
dish washing soap and water (one part soap to 15 parts
water) or childrens' soap bubble solution.
Bubbles forming
indicate a leak.
•
Be sure tank is completely filled with water before lighting
and
activating
the water
heater.
Follow
the "Lighting
Instructions" on the front of the water heater.
•
If additional information is required, contact Sears Service
at 1-800-4-MY-HOME
(1-800-469-4663).
TEFLON ® is a registered trademark
of E.I. Du Pont De Nemours
and Company
FVIR System Operational
Checklist
1.
Manifold gasket properly sealed.
2.
Viewport not damaged or cracked.
3.
Flame-arrestor
free of debris and undamaged.
4.
Manifold component
block properly installed.
5.
No leaks at pilot and manifold connection.
6.
Manifold door screws securely tightened.
7.
Depress the button on the thermal switch
34
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Troubleshooting
