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
Accessory card 1
Accessory card 2
ON
1 2 3 4 5 6 7 8
-X9
-X2
24 20212223 1516171819 1011121314 56789 1
1
N
L
PE
PE
1
2
3
4
5
6
7
8
2
3
4
5
6
7
8
9
234
-X8
-X4
-X10
-X1
ON
1 2 3 4 5 6 7 8
-X9
-X2
24 20212223 1516171819 1011121314 56789 1
1
N
L
PE
PE
1
2
3
4
5
6
7
8
2
3
4
5
6
7
8
9
234
-X8
-X4
-X10
-X1
ACCESSORIES WITH CIRCUIT BOARD AA9
Accessories that contain the circuit board AA9 are con-
nected to the heat pump's terminal block X4:9-12 on
the input board AA3. Use cable type LiYY, EKKX or
equivalent.
Because there can be different connections for accessor-
ies with circuit boards AA9, you should always read the
instructions in the manual for the accessory that you
are going to install.
AA3-X4 AA9-X1
F1155
Accessories
29Chapter 5 | Electrical connectionsNIBE F1155