Component Replacement Procedures - Refrigeration Plant - Rheem 55027500 Service Instructions Manual

Heating Unit (Procedure 7)
Personal Protective Equipment should be worn when conducting step 3 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 supply active and neutral 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 diagram
on page 9.
11. Refit the access cover
12. Restore power supply to the water heater.

Component Replacement Procedures - Refrigeration Plant

Air Inlet Louver (Procedure 8)
1. Isolate the power to the water heater.
2. Remove the refrigeration section jacket top.
3. Remove the 2 screws from the left and right hand sides of the air inlet louver.
4. Remove the 3 screws from the Colorbond trim directly below the air inlet louver.
5. Lift the louver clear of the jacket.
6. Reassemble in reverse order of above.
Refrigeration Section Jacket (Procedure 9)
The fan motor may commence operation without warning. Failure to isolate
the power may result in serious injury if the fan commences operation during
the removal process.
1. Remove the air inlet louver. (Refer to Procedure 8)
2. Remove the air outlet cover.
3. Remove the handle.
4. Remove the screws retaining the jacket to the water heater and lift the jacket clear.
NOTE: The refrigeration section jacket is quite flexible, care should be taken to ensure
it does not kink during removal or replacement.
5. Reassemble in reverse order of above.
TM017 Rheem Air Sourced Heat Pump Service Instructions REV: C
Date of Issue: 5/11/05
This document is stored and maintained electronically by
38
Service. All printed copies not bearing this statement in RED are deemed "uncontrolled".