Rheem 871018 Service Instructions Manual page 53

Burner Change-Over Assembly: (Procedure 2)
1. Remove the front panel. Refer to Procedure 1.
2. Disconnect the wiring plug from each of the solenoid valves. (Note which plug goes
to each valve)
3. Remove the screw retaining the ignition pack to the Burner Change Over Assembly.
4. Remove the six screws retaining the Burner Change Over Assembly. Four from the
Combustion Chamber Front Panel and two from the Proportional Gas Flow Regulating
Valve Assembly.
5. Remove the Burner Change Over Assembly.
6. Reassemble in reverse order of above. Replace gaskets (item numbers 105 and 108) if
required.
7. Test for gas leaks using soapy water solution
Combustion Chamber Front Panel Assembly: (Procedure 3)
1. Remove the front panel and Burner Change Over Assembly. Refer to Procedures 1
and 2.
2. Remove screws (14 off) retaining the Combustion Chamber Front Panel (12 screws
around perimeter and 2 screws in centre).
3. Gently remove the Combustion Chamber Front Panel Assembly.
4. Reassemble in reverse order of above. Replace gaskets (item numbers 105 and 108)
if required.
5. Test for gas leaks using soapy water solution.
Lower Burner Assembly: (Procedure 4)
1. Remove the front panel, Burner Change Over Assembly and Combustion Chamber
Front Panel Assembly. Refer to Procedures 1, 2 and 3.
2. Remove the 2 screws retaining the Lower Burner Assembly.
3. Reassemble in reverse order of above. Replace gaskets (item numbers 105 and 108)
if required.
4. Test for gas leaks using soapy water solution.
Upper Burner Assembly: (Procedure 5)
1. Remove the front panel, Burner Change Over Assembly, Combustion Chamber Front
Panel Assembly and Lower Burner Assembly. Refer to Procedures 1, 2, 3 and 4.
2. Remove the Upper Burner Assembly by sliding forward out of the heat exchanger
assembly.
3. Reassemble in reverse order of above being careful not to pinch or damage wiring.
Replace gaskets (item numbers 105 and 108) if required.
4. Test for gas leaks using soapy water solution.
PCB Assembly: (Procedure 6)
1. Remove the front panel. Refer to Procedure 1.
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.
TM031 Integrity 18, 20, 24, 26L Service Instructions REV: B
D.O.I: February 2008
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