Rheem 310 Series Service Instructions Manual page 50

Anode (Procedure 5)
Elevated temperatures may be present during anode removal process. Wear
Personal Protective Equipment to prevent scalds or burns.
1. Isolate the power and water supplies to the water heater.
2. Relieve pressure from the water heater and drain approximately 10 litres of water
from the cylinder through the T & PR valve.
3. Remove the air inlet louver (Refer to Procedure 10).
4. Remove the refrigeration section jacket top.
5. Remove the anode cap(s). Access is provided through the refrigeration plant chassis.
6. Using a 27mm tube or socket spanner remove the anode(s).
7. Apply thread seal tape to replacement anode, refit and tighten. Note: It may be
necessary to cut the anode to length prior to fitting. Refer to page 3 for the correct
anode length.
8. Restore water supply and check for leaks.
9. Refit the anode cap(s), jacket, air inlet louver and jacket top and restore power.
Heating Unit (Procedure 6)
Wear Personal Protective Equipment when conducting step 1 of this
procedure to reduce the risk of electric shock. Refer to Rheem Safety
Procedure on electrical testing.
1. Drain the water heater. Refer to procedure 1.
2. Remove the access cover and disconnect the wiring from the terminal block.
Disconnect the wiring to the heating unit from the thermostat. Unclip the terminal block
from the jacket and remove thermostat and terminal block.
3. Remove the two screws retaining the thermostat clamp.
4. Loosen the two lower screws slightly. When water is below the heating unit level, refit
the cold water supply pipe.
5. Remove the two lower screws and withdraw the heating unit carefully making sure the
loop does not catch and open up inside the cylinder.
6. Clean around the cylinder fitting, fit gasket to replacement heating unit and insert into
water heater. Note: Ensure the element is installed in the same orientation.
7. Replace screws and thermostat clamp, and then tighten.
8. Close T&PR valve, and open all hot taps. Restore the cold water supply and purge air
through hot taps, close each hot tap as water runs freely.
9. Check heating unit for leaks.
10. Refit thermostat and terminal block and reconnect the wiring as per the circuit wiring
diagram on page 11.
11. Refit the access cover.
12. Restore power supply to the water heater.
TM025 Rheem Heat Pump Service Instructions REV: B
Date of Issue: 02/08/07
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