Connecting sensors
NOTE
Sensor and communication cables must not
be laid near power cables.
Use cable type LiYY, EKKX or similar.
Ambient sensor (BT28)
Installed in the lead-in for the outdoor air damper.
Accessory card
24
23
22
21
20
19
18
17
X2
14
External
BT28
Connecting the outdoor air damper (QN38)
Accessory card
9
8
7
6
X9
5
4
3
2
1
1
2
X10
DIP switch
The DIP switch on the accessory board (AA5-S2) must
be set as follows.
External
White
Blue
QN38
Brown
OEK 20-160 | GB