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External control units wiring diagram for units with an A2 control regulator
1
7
6
5
4
3
2
230 V/50-60 Hz
Control
regulator
GND
+10V
+10V CTR
GND
Ctr
L
N
PE
X1
W
hit
e
Bro
wn
Gr
een
XP
QF
Name
Wire**
Control regulator
3 x 0.25 mm
2
External control units wiring diagram for units with an
A3/A4 control panel
External control units wiring diagram for units with an A40
control panel
1 2 3 4 5 6 7 8 9 101112
P1
L L1 L2 L3
X1
P1
X1
L N PE T C1 C1 C2 C2 SL
Low Mid High
W
hit
e
Bro
wn
Gr
een
Yello
w
L
L
P1
N L3 L4 L1
LB1
B
N
T
PE
C1 C1 C2 C2 SL
Low Mid High
1
2
3
4
5
6
3
4
5
6
1
2
X1
X1
1 2
3
4
5
6
7
8 9 10 11 12 13
230
V/50 (60) H
z
Designation
Name
Wire**
P1
Control panel
4 x 0.75 mm
2
Designation
Name
Wire**
P1
Control panel
6 x 0.6 mm
2
External control units wiring diagram for units with an A21 control panel
GND
А
В
+24V
1
2
PK1*
1
2
1
2
U
U
P1
1
2
C
C
U
*
X1
Bo
os
t
Ka
m
in
1
2
SM1*
1
2
SM2*
U
U
L N
L N
PE
NC
NO
NO
C
NO
C
NO
C
C
A B
NO
C
C
BPS
GND
+24V
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
23
0 V/
50 (
60)
Hz
Brown
Yello
w
Gr
een
W
hit
e
Designation
Name
Contact type
Wire**
SM1*
Supply air damper actuator
NO
2 x 0.75 mm
2
SM2*
Exhaust air damper actuator
NO
2 x 0.75 mm
2
PK1*
Contact from fire alarm control panel
NC
2 x 0.75 mm
2
CCU*
Cooler control
NO
2 x 0.75 mm
2
P1
External control panel
4 x 0.75 mm
2
Boost
Contacts ON/OFF Boost
NO
Kamin
Contacts ON/OFF Kamin
NO
* Not included in the delivery set.
Warning! Maximum connecting cable length is 20 m!
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