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