Replacing the Manifold/Burner Assembly | Kenmore 153.33115 specification

Replacing the Manifold/Burner	Assembly	10 Follow the lighting instructions on the	front of the water
		heater. With the main burner lit, check for leaks at
		the manifold and pilot connections by brushing on an
		approved noncorrosive leak detection solution, or 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. Correct any leak found.
		Verify proper operation and then replace the outer door.
		FLAMEARRESTOR	BRACKET

Explosion Hazard

Tighten both manifold door screws securely.

Remove any fiberglass between gasket and combustion chamber.

Replace viewport if glass is missing or damaged.

Replace manifold component block if missing or removed.

•Replace door gasket if damaged.

•Failure to follow these instructions can result in death, explosion, or fire.

1.Check the door gasket for damage or imbedded debris prior to installation.

2.Inspect the view port for damage and replace as required.

3.Insert the manifold/burner assembly into the burner compartment, making sure that the tip of the manifold tube engages in the slot of the bracket inside the combustion chamber (Figures 40 & 41).

4.Inspect the door gasket and make sure there is no fiberglass insulation between the gasket and the combustion chamber.

5.Tighten the two screws which secure the burner/

manifold assembly to the combustion chamber. There should be no space between the gasket part

of the manifold door and combustion chamber. 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.Reconnect the manifold tube (3/4" wrench) and pilot tube

(7/16" wrench) to the gas control valve/thermostat. Do not cross-thread or apply any thread sealant to the fittings. IMPORTANT: If you were supplied with a new ferrule nut in a parts kit, follow these steps:

1 .) Install the ferrule nut into the gas valve at the pilot tube location, hand tight only. 2.) Insert the pilot tube into the ferrule nut until the tube bottoms out, then tighten the nut with a 7/16" wrench until the crimp connection seals to the pilot tube. Continue to tighten until the nut is tight in the gas valve.

NOTE: L.R Gas systems use reverse (left-hand) threads on the manifold tube.

7.Connect the white (-) thermopile wire to the gas control valve/thermostat. Then connect the red thermal switch wires to the thermal switch on the on the manifold door. (Figure 38).

8.Reconnect the igniter wire (Figure 33).

9.Turn on the gas supply to the water heater at the manual gas shut-off valve (Figure 11).

TiP

FIGURE 40.

CLOSE-UPINSIDE VIEW OF

THE COMBUSTION CHAMBER.

__SLOT

TIPBRACKET

MANIFOLD TUBE

FIGURE 41.

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 42).

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Pilot/

3lie

Bracket

Electrode

Igniter Button

FIGURE 42.

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.