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EXTERNAL CONTROL UNITS WIRING DIAGRAM OF THE VUTR 280 V(Е) EC A21 UNITS
L N
X1
L N
Designation
SМ1*
Supply air damper actuator
SМ2*
Exhaust air damper actuator
РК1*
Contact from fire alarm panel
CCU*
Cooler control
P1*
External control panel
Boost*
Contacts ON/OFF Boost
CO2*
Contacts ON/OFF CO
КН1*
Kitchen hood
* Is not included in the delivery set.
** The supply voltage U of external dampers SM1, SM2 is selected depending on the type of dampers.
*** Output parameters: terminals 15-20 - 3A, 30VDC / ~ 250VAC ("dry contact").
The maximum cable length from external devices to the terminal block should not exceed 100 meters. The recommended cable cross-
section is shown in the table.
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N
C
PE
L
NC
4
5
6 7 8 9 10 11 12 13 14 15 16 17 18
2
2
1
1
L1
PE
KH1.2*
PK1*
–
Electric shock hazard!
Name
2
C
NC
GND
0-10V
+24V
GND
2
2
1
1
GND
GND 0-10V
+24V
Boost*
P1*
CO2*
KH1.1*
Contact type
NO
NO
NC
NO
NO
A B
NO
C
NO
+24V
19 20 21 22
**U
**U
A
B
+24V
2
2
1
1
2
2
SM1*
SM2*
Cable type
3 A, 30DC/~250 AC
3 A, 30DC/~250 AC
2 x 0.75 mm
2
3 A, 30DC/~250 AC
4 x 0.25 mm
2
2 x 0.25 mm
2
3 x 0.75 mm
2
5 x 0.75 mm
2
C
NO C
1
1
Notice
13
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