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Remote Controller: (Procedure 17)
1. Isolate power at the water heater.
2. Remove the small Philips head screw from the bottom of the Remote Controller.
3. Gently pivot the Remote Controller up from the bottom and then lift up and off upper
retaining lugs.
4. Kitchen Controller: Disconnect the wiring from the terminals on the back of the
Controller (Note: The wiring is not polarity sensitive).
Bathroom Controllers: Disconnect the multi-pin plug.
5. Reassemble in reverse order of above.
Gas Type Circuit Board: (Procedure 18)
1. Remove the front panel. Refer to Procedure 1.
2. Gently unplug the Gas Type Circuit Board from the PCB.
3. Reassemble in reverse order of above.
4. Restore power.
5. Press the MAX button. On all 18 & 20L Integrity models 3H should be displayed.
6. Test operation of water heater and ensure the MIN and MAX burner gas pressures are
correct. Refer to Procedure on page 48.
Transformer: (Procedure 19)
1. Remove the front panel. Refer to Procedure 1.
2. Disconnect the primary and secondary winding multi-pin plugs to the Transformer.
3. Remove the 2 Philips head screws retaining the Transformer.
4. Reassemble in reverse order of above.
Power Filter: (Procedure 20)
1. Remove the front panel. Refer to Procedure 1.
2. Disconnect the incoming and outgoing wiring loom plugs.
3. Remove the 2 Philips head screws retaining the filter to the mounting bracket.
4. Remove the Power Filter.
5. Reassemble in reverse order of above.
Solar Bypass Valve: (Procedure 21)
Solar bypass valves are no longer available and if faulty are to be removed and a
Comparator installed. Refer to page 14 for the procedure on installing a comparator.
NOTE: 20L models with a -B suffix in the model number do not require either a bypass
valve or a comparator.
Flow Sensor Turbine: (Procedure 21)
1. Isolate cold water supply.
2. Remove the front panel. Refer to Procedure 1.
3. Unscrew the water drain plug (item 405) and relief valve (item 431) and drain the water
heater.
4. Disconnect the cold water supply pipe from the cold-water inlet connection.
5. Disconnect the bypass solenoid wiring loom plug.
TM002 Integrity 18 & 20L Service Instructions REV: E
D.O.I: 7/11/2007
This document is stored and maintained electronically by
53
Service. All printed copies not bearing this statement in RED are deemed "uncontrolled"
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