SERVICE PROCEDURE D24-IV
Main Burner & Pilot
Removal and Inspection
WARNING
Heater components may be HOT when performing the following steps in this procedure.
Take necessary precaution to prevent personal injury.
Main Burner Removal
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| Gas Valve | ||
Step 1. | Disconnect |
| Control Knob | |||
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| electrical supply. | Gas Supply |
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Step 2. | Turn “OFF” gas supply to water heater. | Line |
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Step 3. | Rotate gas valve control knob to the “OFF” position | |||||
| (see photo 17). |
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Step 4. | Disconnect Gas supply line from the gas valve | |||||
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| (see photo 17). |
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Step 5. | Disconnect wire leads from gas valve |
| Pilot Flame Sense | |||
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| Wire (White) | ||||
| (see photo 17). |
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Step 6. | Disconnect white flame sense wire & orange ignition | |||||
| wire from Control Board (see photo 18). |
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Step 7. | Remove the two burner rack mounting screws (see photo 17). | |||||
Step 8. | Slide complete burner rack out from heater |
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| (see photo 19). |
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Step 9. | To install burner, reverse above procedure. |
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Step 10. | Check for gas leaks and verify proper operation. |
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Main Burner Inspection
Step 1. Burner tubes should be free of any flue
scale or other debris. Clean
burner tubes using a stiff brush and/or shop vac. Burner ports should have uniform openings. Replacement is recommended for burners where port area is deteriorated or other unintended openings are present.
Step 2. Insure pilot shield is in place (see photo 20).
Step 3. Inspect pilot position to insure smooth burner ignition from pilot flame. Pilot should be mounted using the two mounting screws through the burner support bracket resulting in a level pilot position.
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19
20
Gas Valve
Wire Leads
Burner Rack
Mounting
Screw
Pilot spark wire
(Orange)
Pilot
Shield
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