TM039 Rheem Water Star Service Instructions REV: A
Date of Issue: 02/09
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12. Purge air from the system through hot taps.
13. Refit the front polystyrene insulation and outer jacket.
14. Restore the power supply to the water heater.
Thermostat (Procedure 4)
1.
Switch off power at GPO and unplug power cord from GPO.
2. Remove the outer jacket screws.
3. Remove the outer jacket and front polystyrene insulation to expose the water heater.
4. Confirm the wiring is as per the wiring diagram on page 6.
5. Disconnect the wiring to the thermostat.
6. Slide the thermostat out from under the retaining clamp.
7. Slide the replacement thermostat under the clamp ensuring the thermostat is held firmly
against the cylinder.
8. Reconnect the wiring as per the wiring diagram on page 6.
9. Check water heater internal wiring insulation for cracking.
10. Refit the front polystyrene insulation and outer jacket.
11. Conduct an electrical insulation test. Refer to page 18.
12. Restore power to the water heater.
Inlet Water Connector (Procedure 5)
1.
Drain the water heater
(refer to procedure 1 on page 19).
2. Remove the outer jacket screws.
3. Remove the outer jacket and front polystyrene insulation to expose the water heater.
4. Undo the brass nuts retaining the inlet pipe to the inlet fitting and the transfer valve.
5. Loosen the remaining two brass nuts retaining the transfer valve.
6. Remove the two (2) screws retaining the inlet fitting to the bottom chassis.
7. Rotate the bottom of the transfer valve towards the front of the water heater so the inlet
water pipe could be manoeuvred free.
8. Fit the replacement inlet connector into place.
9. Reassemble in reverse order of above.
10. Restore the water supply.
11. Purge air from the system through hot taps and check for leaks.
12. Refit front polystyrene insulation and outer jacket.
13. Restore the power supply to the water heater.
