8.3.1
EXTERNAL HEAT PUMP CONNECTIONS
Fig. 24 External connections
POWER SUPPLY
Connect the power cable to terminals L1, N and PE
(
chapter 8.4). Ensure connection to the same phase
sequence as the internal unit.
CAN-BUS
Connect the screened communication cable between
the internal unit and the heat pump to terminals GND,
CANL, CANH and 12V (
CAUTION: Do not mix up the 12V and CAN-
BUS connections!
The processors are destroyed if 12V is
connected to the CAN-BUS.
B Check that the four cables are connected
to the contacts with the corresponding
marking on the circuit board.
6 720 641 467 (2010/01)
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chapter 5.8).
POWER SUPPLY
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