Rheem MPi Series Installation Instructions Manual page 27

24. Tank Sensor Cable Connection: Insert the tank sensor cable plug to the
connector on the underside of the control box.
The plug is polarised and can only be inserted one way.
Ensure the plug fully engages the locking feature on the connector.

25. Power Cable Connection: Insert the four pin power cable plug to the
connector on the underside of the control box.
The plug is polarised and can only be inserted one way.
connect power cable and tank sensor cable
HEAT PUMP AND TANK ASSEMBLY
Steps 24 and 25
27