Service Manual

39
Service Procedure V
Blower Testing and Replacement (Continued)
Blower Replacement 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. Disconnect wire harness from blower.
6. Disconnect intake vent and gas supply from gas valve assembly.
7. Remove the two gas valve mounting screws (Torx bit) located on the venturi mounting flange.
8. Remove the four blower flange mounting screws (5/32 Allen wrench) and
remove blower from transition flange.
9. Remove any residual gasket material from venturi mounting flange and transition flange.
10. Install new blower with new gasket provided. Secure blower in place using screws from step 8.
11. Reconnect gas valve assembly to blower with new gasket provided. Secure gas valve in place using
screws from step 7.
11. Reconnect intake vent and gas line to gas valve assembly and check for gas leaks repair any leaks
found.
13. Reconnect wire harness to blower assembly. Restore 120 volt power supply and gas supply to water
heater and confirm proper operation following the lighting instructions on the lighting instruction label or
the lighting instructions located in the Installation and Operating Instruction Manual.
14. Replace the surround cover on the top of the water heater.
WARNING
120 volt potential exposure. Isolate the appliance and
reconfirm power is disconnected using a multi-meter.
Blower
Blower/gas valve gasket
Gas valve assembly
Gas valve mounting
screws (2 locations)
Venturi inlet
Venturi
mounting
flange
Blower flange
mounting screws
Blower/transition
gasket
Transition
flange
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