Nibe SCA 41, Installer Manual

Page: 48 / 84

Connecting communication
This accessory contains an accessory board (AA5) that
must be connected directly to the heat pump on the
input board (terminal block AA3-X4).
If several accessories are to be connected or are already
installed, the following instructions must be followed.
The first accessory board must be connected directly
to the heat pump's terminal block AA3-X4. The follow-
ing boards must be connected in series to the previous
board.
The communication cable (W102, length 3,5 metres)
is factory fitted and connected according to the table
below.
Another access-
ory board (AA5-
X4)
Heat pump
(AA3-X4)
Colour
4 15 White (A)
5 14 Brown (B)
6 13 Green (GND)
1
2
3
4
5
6
7
8
AA5-X4
15
A
B
GND
A
B
GND
A
B
GND
A
B
GND
A
B
GND
14
13
AA3-X4
1
2
3
4
5
6
7
8
AA5-X4
LEK
Accessory card 1
Accessory card 2
ON 1
2
3
4
5
6
7
8
-X9
-X2
24 20 21 22 23 15 16 17 18 19 10 11 12 13 14 5 6 7 8 9 1
1
N
L
PE
PE
1
2
3
4
5
6
7
8
2
3
4
5
6
7
8
9
2 3 4
-X8
-X4
-X10
-X1
AA5-X4
ON
1
2
3
4
5
6
7
8
-X9
-X2
24 20 21 22 23 15 16 17 18 19 10 11 12 13 14 5 6 7 8 9 1
1
N
L
PE
PE
1
2
3
4
5
6
7
8
2
3
4
5
6
7
8
9
2 3 4
-X8
-X4
-X10
-X1
AA5-X4
EB100
F750
AA3-X4
Connecting the supply
The unit box (AA25) is supplied with supply cable with
plug (W101, length 3,0 meters) installed from the
factory.
48
GB