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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 water heater.
4. Unlatch and remove surround cover from top of heater.
5. From the gas valve, disconnect the gas connection, intake venting, wire harness, and silicone tubing.
6. Disconnect wire harness from blower assembly.
7. Remove the two screws each holding the spark rod and flame sensor in place (long reach magnetic Phillips head
screwdriver). Carefully remove spark rod and flame sensor from combustion assembly.
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
Heater components may be
HOT
when performing
the following steps in this procedure. Take
necessary precaution to prevent personal injury.
WARNING
120 volt potential exposure. Use caution making
voltage checks to avoid personal injury.
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Содержание EF120T4003N3
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