Figure 28
Pilot/Thermopile Assembly
(50K Models) | Pilot Tube |
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Igniter | (Ferrule Nut |
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Connector | Not Shown) |
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Thermopile | Pilot/Thermopile |
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Connectors |
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Assembly | Thermopile | ||
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Pilot
6.Push the new pilot/thermopile assembly connectors through the opening in the burner door (See Figure 27). Do not to scrape or nick the wires during installation.
IMPORTANT: DO NOT USE PILOT/THERMOPILES WITH FIBERGLASS SLEEVES. The replacement kit does not contain a fiberglass sleeve over the pilot/ thermopile wires.
7.Attach the pilot assembly to the Burner Door Assembly.
8.Position the new thermopile wires through the top opening of the manifold component block (Figure 27). Be sure that the igniter wire is positioned through the middle opening of the manifold component block. Position the pilot tube through the bottom opening of the manifold component block.
9.See “Replacing the Burner Door Assembly” section. NOTE: Use the ferrule nut supplied with the new pilot/ thermopile assembly when connecting the pilot tube to the gas control valve/thermostat.
External Inspection & Cleaning of the Flame-trap
Although not likely to occur, if debris collects on the flame- trap, use a vacuum, compressed air, or a soft bristle brush to remove it.
NOTE: If unable to inspect or clean the flame trap from underneath, follow the “Cleaning the Combustion Chamber and
Figure 29
Flashlight Mirror
Cleaning the Combustion Chamber and Flame-trap
1.Follow procedure outlined in “Removing the Burner Door Assembly”.
2.Use a vacuum cleaner/shop vac to remove all loose debris in the combustion chamber (Figure 30A). Use compressed air to clear any dust or debris that may have accumulated in the
3.Reassemble following the procedure under “Replacing the Burner Door Assembly”.
Replacing the Burner Door Assembly
WARNING
Explosion Hazard
Tighten both burner 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 viewport for damage and replace as required.
3.Insert the burner assembly into the burner compartment, making sure that the burner assembly sits firmly against the burner bracket inside the combustion chamber (Figure 30B).
IMPORTANT: Do not to scrape or nick the wires during installation.
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 burner assembly to the combustion chamber and tighten securely. There should be no space between the gasket part of the burner door and combustion chamber. IMPORTANT: Do not operate the water heater
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