Connecting
accessories
Instructions for connecting accessories are provided in
the manual accompanying the accessory. See page 69
for the list of the accessories that can be used with
VVM 320.
Connection for communication with the most common
accessories is shown here.
ACCESSORIES WITH CIRCUIT BOARD AA5
Accessories that contain the AA5 circuit board are con-
nected to the indoor module terminal block X4:13-15 on
the input boardAA3.
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 indoor module's terminal block AA3-X4. The fol-
lowing boards must be connected to the previous board
in series.
Use cable type LiYY, EKKX or similar.
Refer to the accessory manual for further instructions.
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
Indoor module
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
37Chapter 5 | Electrical connectionsNIBE VVM 320
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