Installation, user and maintenance manual
– GAHP-A
49
figure 6�9 – CAN BUS cable connection
Example of a single CAN bus cable connected to the board
LeGend
A
protective isolating tape
B
shielding of CAN BUS cable (pre-
wired to last unit)
C
cable bracket (the CAN BUS cables
of an intermediate node are present)
D
CAN BUS/circuit board connector
E
wires (6) of the CAN BUS cable
(intermediate node)
A
A
B
C
E
D
Before working on the electrical panel of the appliance, make sure that power supply is
off.
Cut a length of cable long enough to allow installing it without kinking.
1.
On one end of the cable, remove the jacket for a length of approximately 70-80
2.
mm, taking care not to cut the shielding (metal mesh and/or aluminium sheet and,
if present, the bare connector in touch with the shield) and the wires contained
within.
If the cable is too thin to be held in place in the cable holding bracket (detail C in
3.
Figure 6.9 CAN BUS cable connection
→
49), make it thicker by wrapping insulat-
ing tape around the jacket close to the stripped part (to an approximate diameter
of 12-13 mm).
Pull back the shielding on the jacket; apply isolating tape to the end of the shield-
4.
ing as pulled back (detail A, Figure 6.9 CAN BUS cable connection
→
49).
If the appliance is a
5.
terminal node of the network connect the three coloured
wires to the orange connector as shown in detail "A" of Figure 6.10 Electrical wir-
ing diagram
→
50. Respect the correct indications L, H, GND provided in Table 6.2
CAN BUS cables type
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48, on the figure and on the electronic board below the
connector.
If the appliance is an
6.
intermediate node repeat the operations from step 2 to step
5 for the other cables required (in this way you will have two cable lengths each
one without the jacket on one end). Twist together the cores with the same color
and connect them to the orange connector, as shown in detail "B" of Figure 6.10
Electrical wiring diagram
→
50.
Fix the CAN BUS cable (or two cables, according to the type of node being con-
7.
nected) to the holding bracket in the upper part of the electrical panel so that the
pulled-back shielding is in solid touch with the metal bracket. The cables must be
firmly held in place by the bracket if pulled.
In order to position the jumpers on the electronic board according to the type of node
being configured:
If the appliance is a
•
terminal node on the network (i.e. 3 wires are inserted in the
orange connector on the board): set the jumpers as shown in detail "A" of Figure
6.10 Electrical wiring diagram
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50:
If the appliance is an
•
intermediate node on the network (i.e. 6 wires are inserted
in the orange connector on the board); set the jumpers as shown in detail "B" of
Figure 6.10 Electrical wiring diagram
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50:
