Kenmore 153.331492 User Manual download pdf (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.

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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Kenmore 153.331492 User Manual Page 32

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