Robur GAHP Line AR Series, Installation, Use And Maintenance Manual

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GAHP-AR – Installation, start-up, use and maintenance manual
62
Edition: 2014-08
Figure 26 - Orange connector supplied with the DDC for connecting the wires of the CAN bus cable
Before working on the DDC, make sure that it is off. The DDC, like the electronic
board on the appliance, has jumpers that must be moved so that it can be
configured as an intermediate or terminal node. The position of the jumpers on a
new DDC is CLOSED, as illustrated in Figure 27, on page 62.
Figure 27 - Direct Digital Controller (DDC) – wiring diagram and partial rear view
KEY
GND
Common data
A Insulating tape protecting CAN bus cable shield
L
LOW data signal
B CAN bus wires
H
HIGH data signal
C CAN bus cable shield
J21 jumpers (CLOSED) D Eyelet terminal and screw for fixing to base of DDC
B
A
B
C
D