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External connections Heat pump
Power supply:
Connect to terminals L1, L2, L3, N and PE.
CANbus:
Communication cable between the circuit boards in the control
cabinet, heat pump and accessory unit. Connect to terminals GND,
CANL, CANH and 12V. See more under section CANbus.
E4, Heating cable:
The drainage pipe from the heat pump’s discharge water vessel may
need to be fi tted with a heating cable. The heating cable is connected
to terminals Do4, N. See section Accessories.
Warning
Connecting to the power supply
Note
S1 must be in position Term here and
on the accessory unit board.
To Control cabinet
Do not mix up the 12V and CAN-
bus connections! If 12V (or other
incorrect voltage) is supplied to the
CANbus contacts the processors in the
CANbus are destroyed.
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