Kenmore 153.331492 - Manual (Page 32)

compartment, making sure that the tip of the manifold tube
engages in the slot of the bracket inside the combustion
chamber (Figures 38 & 39).
4. Inspect the door gasket and make sure there is no
fiberglass insulation between the gasket and the
combustion chamber.
5. Replace the two screws, which secure the manifold/
burner assembly door to the combustion chamber and
tighten securely. Once the manifold/burner assembly door
is tightened, visually inspect the door gasket between
the manifold/burner assembly door and the combustion
chamber for spaces or gaps that would prevent a seal.
IMPORTANT: Do not operate the water heater if the door
gasket does not create a seal between the manifold door
and the combustion chamber.
6. During the following procedure, do not cross-thread or
apply any thread sealant to any of the fittings listed below.
First, reconnect the manifold tubing to the gas control valve/
thermostat.
NOTE: If a ferrule nut needs to be installed for the pilot
tube, locate the one provided with your parts kit. Install it in
the gas control valve/thermostat at the pilot location, hand
tight only.
Next, insert the pilot tube into the ferrule nut until it bottoms
out. NOTE: Hold the tube in this position. Tighten the ferrule
nut with a wrench until the crimp connection seals to the
pilot tube. Continue to tighten until the nut is tight in the gas
control valve/thermostat.
7. Plug the thermopile plug into the gas control valve/
thermostat. Also, connect the two wire leads that go to the
thermal switch if they had been removed.
Reconnect the igniter wire and tank sensor plugs.
Turn gas supply on and refer to the Lighting Instructions.
8
.
9.
10
.
11
.
With the burner lit, check the gas control valve/thermostat
supply line, two piece wire connector, manifold tube,
and pilot tube connections for leaks. Check for leaks by
brushing on an approved noncorrosive leak detection
solution. Bubbles forming indicate a leak. Correct any leak
found. IMPCRTANT: All leaks must be fixed immediately.
Replace the outer door.
MANIFOLD TUBE
FIGURE 39.
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. The spark gap
of 0.125 inch is set when the electrode is installed at the factory.
(Figure 40). Use only factory authorized piezoelectric igniter
parts for replacement.
ELECTRONIC CONTROL MODULE PILOT ASSEMBLY
IGNITER
BUTTON
• NOTE: SPARK GAP DISTANCE MEASURED FROM ELECTRODE TIP TO PILOT.
FIGURE 40.
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.
FLAME ARRESTOR BRACKET
FVIR System Operational Checklist
1. Manifold gasket properly sealed.
2. Viewport not damaged or cracked.
3. Flame-arrestor free of debris and undamaged.
4. Two piece wire connector properly installed.
5. No leaks at pilot and manifold connection.
6. Manifold door screws securely tightened.
7. Depress the button on the thermal switch.
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