Rheem II Series Service Instructions Manual page 53

Upper Burner Assembly: (Procedure 4)
1. Remove the front panel and Lower Burner Assembly. Refer to
Procedures 2 & 3.
2. Disconnect the outlet thermistor wiring from the green connector
3. Split the heater strip at the joint and move the strip ends out of the
way
4. Unscrew and remove the S/S clip securing the inlet copper pipe to
the inlet valve
5. Unscrew and remove the S/S clip securing the outlet copper pipe
to the outlet valve
6. Unscrew the 2 x upper and 2 x lower screws retaining the burner assy to the housing.
7. Lift the assy to unclip the 3 x ceramic anti frost heaters from the Inlet and outlet copper
pipes
8. Remove the Upper Burner Assembly by lifting out of the heat exchanger assembly.
9. Reassemble in reverse order of above being careful not to pinch or damage wiring.
Replace gaskets if required.
10. Test for gas leaks using soapy water solution.
PCB Assembly: (Procedure 5)
1. Remove the front panel. Refer to Procedure 2.
2. Remove the screw retaining the PCB Assembly in the water
heater.
3. Carefully remove the PCB Assembly complete.
4. Disconnect the multi-pin connectors from the PCB Assembly.
5. Remove the Gas Type Connector IC board and fit to
replacement PCB Assembly.
6. Reassemble in reverse order of above.
Flame Rod Electrode removal: (Procedure 6)
Note There are two flame rod electrodes (See also procedure 7)
1. Remove the front panel. Refer to Procedure 2.
2. Disconnect the orange and/or grey wires from inside the flame
rods' silicon boots.
3. Remove the 2 x screws retaining the electrodes to the front burner plate
4. Carefully remove the electrodes (item 734) and clamping bracket assemblies noting
the angular position of the flame rod, for correct re-alignment.
5. Reassemble in reverse order of above.
6. Replace the felt gaskets (item 740) if required.
7. Test for gas leaks using soapy water solution.
TM090 12-26 Series II CFGWH Service Instructions
REV AB – Issued February 2019
This document is stored and maintained electronically by Rheem Technical Support. All printed copies are deemed "uncontrolled"
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