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Component Replacement Procedures
Draining the Water Heater (Procedure 1)
1. Switch off power at GPO, unplug power cord from GPO and isolate the water
supply to the water heater
2. Relieve pressure from the water heater by easing the T&PR valve or through a
hot tap.
3. Disconnect the inlet water supply pipe
4. Fit a drain hose to the inlet water connection and run the other end to a drain or safe
location.
5. Open the temperature and pressure relief valve to allow air into the system.
NOTE: A small amount of water will be left in the cylinder.
Transfer Valve (Procedure 2)
1. Drain the water heater (refer to procedure 1 above)
2. Remove the outer jacket screws.
3. Remove the outer jacket and front polystyrene insulation to expose the water heater.
4. Disconnect the inlet pipe from the transfer valve by undoing the ¾" brass nut.
5. Disconnect the outlet pipe from the transfer valve by undoing the ¾" brass nut.
Remove the old transfer valve.
6. Fit the replacement transfer valve and assemble in reverse order.
7. Restore the water supply and check for leaks.
8. Purge air from the system through hot taps.
9. Refit the front polystyrene insulation and outer jacket.
10. Restore the power supply to the water heater.
Temperature and Pressure Relief Valve (Procedure 3)
Never fit a T&PR valve with a rating higher than that indicated on the water
heater rating plate. Do not use reconditioned T&PR valves.
1. Partially 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. Disconnect the outlet pipe from the T&PR valve by undoing the ¾" brass nut.
5. Disconnect the drain line fitting from the T&PR valve
6. Unscrew the T&PR valve from the top of the cylinder.
7. Confirm the replacement T&PR valve is the correct rating and refit using thread tape.
8. Reassemble in the reverse order of above
9. Restore the water supply.
10. Check the T&PR valve thread and connections for leaks.
11. Operate the T&PR valve lever to reset relief drain.
TM039 Rheem Water Star Service Instructions REV: A
Date of Issue: 02/09
This document is stored and maintained electronically by
19
Service. All printed copies not bearing this statement in RED are deemed "uncontrolled"
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