Specifications

TM024 Premier Loline Solar Drain back Service Instructions REV: A

D.O.I: 12/12/2007

This document is stored and maintained electronically by Service. All printed copies not bearing this statement in RED are deemed “uncontrolled”

Heating Unit – 591 Models Only (Procedure 21)

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 upper electrical access cover (refer to procedure 5) 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 6 or 7 depending upon thermostat type (EWT or ST).

11. Refit the upper electrical access cover.

12. Restore power supply to the water heater.