External Connections Heat Pump - IVT Optima 600-1700 Installation Manual

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.
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.
S1 must be in position Term here and
on the accessory unit board.
To Control cabinet
27
Connecting to the power supply
Warning
Note