Nibe AXC 20, Installer Manual, Page: 13 / 36

Connecting to main
product
GENERAL
NOTE
All electrical connections must be carried out
by an authorised electrician.
Electrical installation and wiring must be carried
out in accordance with the stipulations in force.
The main product must be disconnected from
the power supply when installing AXC 20.
NOTE
AXC 20 must be installed via an isolator switch
with a minimum breaking gap of 3mm. Minim-
um cable area must be sized according to the
fuse rating used.
Caution
The relay outputs on the accessory board can
have a max load of 2A (230V) in total.
The total max permitted load on the accessory
board is 4 A.
NOTE
Mark up any junction boxes with warnings for
external voltage.
The electrical circuit diagram is at the end of this Installer
handbook.
CONNECTING COMMUNICATION
This accessory contains an accessory board (AA5) that
must be connected directly to the compatible product
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 terminal block in the compatible product and the
following boards must be connected in series with the
previous board.
Use cable type LiYY, EKKX or similar.
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
1
2
3
4
5
6
7
8
15
14
13
1
2
3
4
5
6
7
8
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
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
Compatible product
Accessory card 1
Accessory card 2
AA5-X4
AA5-X4
AA3-X4
CONNECTING THE SUPPLY
2
1
N
230V 50Hz
L
PE
AXC 20 External
X1
OVERVIEW ACCESSORY BOARD (AA5)
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-X9 AA5-S2 AA5-X2
13 AXC 20 | GB