6.Reposition the manifold component block in the
7.See Replacing the Manifold/Burner Assembly.
External Inspection & Cleaning of the Air Intake Chamber Screen
1.At least twice annually inspect the air intake chamber screen (Figure 38) for any dust or debris that may have accumulated on the louvers. NOTE: If the water heater is located in an area that is subjected to lint and dirt, it may be necessary to check the air intake chamber screen
more frequently.
2. Use a vacuum cleaner with a hose attachment to remove any dust or debris that may have accumulated on the screen.
Air Intake Chamber
Screen
FIGURE 38.
Cleaning the Combustion Chamber and Air Diverter Assembly
1.Follow procedure outlined in “Removing the Manifold/Burner Assembly”.
2.Use a vacuum cleaner/shop vac to remove all loose debris in the combustion chamber (Figure 39). Use compressed air to clear any dust or debris that may have accumulated on the air diverter assembly.
Air Diverter | Combustion |
Assembly | Chamber |
Manifold |
|
Door Gasket |
|
FIGURE 39. |
|
3.Reassemble following the procedure under “Replacing the Manifold/Burner Assembly”
Replacing the Manifold/Burner Assembly
WARNING
Explosion Hazard
•Remove any fiberglass between gasket and combustion chamber.
•Replace viewport if glass is missing or damaged.
•Replace two piece wire connector if missing or removed.
•Replace door gasket if damaged.
•Tighten both manifold door screws securely.
•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 (Figure 40).
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
7.Reconnect the flame sense/hot surface igniter wire to the gas control valve/thermostat (Figure 35).
8.Turn gas supply on and refer to the Lighting Instructions.
9.With the burner lit, check the gas control valve/thermostat supply line, two piece wire connector, and manifold tube connections for leaks. Check for leaks by brushing on an approved noncorrosive leak detection solution. IMPORTANT:
Do Not splash solution onto the electrical connections. Bubbles forming indicate a leak. Correct any leak found. All leaks must be fixed immediately.
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