Service Manual

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Service Procedure III
Burner Tube Inspection and Replacement
Burner Tube Removal Procedure
1. Position main power switch to OFF.
2. Disconnect (unplug) water heater from 120 volt
power source.
3. Turn OFF gas supply to the water heater.
4. Unlatch and remove the surround cover from the
top of the water heater.
5. From the gas valve, disconnect the gas connection, PVC venting, silicone tubing, and wire harness.
6. Disconnect the wire harness from the blower assembly.
7. Carefully remove the flame sensor from combustion assembly. Remove the two screws on the
spark rod bracket and remove the spark rod.
8. Remove the 4 nuts (7/16" wrench) holding the burner transition in place. Lift the blower/gas valve transition
assembly from burner mounting insert, remove gasket and set aside.
9. Remove burner tube from burner mounting insert. See next page for burner tube inspection procedure.
WARNING
120 volt potential exposure. Isolate the appliance and
reconfirm power is disconnected using a multi-meter.
WARNING
Heater components may be HOT when performing
the following steps in this procedure. Take necessary
precaution to prevent personal injury.
SPARK ROD
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