Electrical connection
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 indoor module must not be powered when
installing ACS 310.
The electrical circuit diagram is at the end of this Installer
handbook.
Connecting communication
VVM225/VVM 310/VVM 320/VVM 325
This accessory contains an accessory board (AA5) that
must be connected directly to the indoor module 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 indoor module’s terminal block AA3-X4. The follow-
ing 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
Compatible product
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
Indoor module
AA3-X4
Connecting the supply
Connect the power supply to terminal block X1 as illus-
trated.
3
2
1
N
230V 50Hz
L
PE
AA25
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-X2
AA5-X9
AA5-X10
AA5-S2
Connection of sensors and external blocking
Use cable type LiYY, EKKX or similar.
Temperature sensor (BT64)
Connect the sensor to AA5-X2:19-20.
External blocking (optional)
A contact can be connected to AA5-X2:21-22 to allow
blocking of the cooling operation. When the contact
closes, cooling operation is blocked.
24
20
21
22
23
15
16
17
18
19
13
14
External blocking
AA5-X2
BT64
Caution
The relay outputs on the accessory board can
have a max load of 2 A (230 V) in total.
ACS 310 | GB
16
