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CONNECTION TO POWER MAINS
• The unit is rated for connection to 1~230 V/50 (60) Hz power mains according to the wiring diagram.
• The connection must be made using durable, insulated and heat-resistant conductors (cables, wires). The actual wire cross section
selection must be based on the maximum load current, maximum conductor temperature depending in the wire type, insulation,
length and installation method.
• The external power input must be equipped with a automatic circuit breaker built into the stationary wiring to open the circuit in
the event of overload or short-circuit. The position of the circuit breaker must ensure free access for quick unit power-off. The trip
current of the automatic circuit breaker must exceed the maximum current consumption of the unit (refer to the “Technical data”
section or to the unit label). The recommended trip current of the circuit breaker is the next current in the standard trip current row
following the maximum current of the connected unit.
• The automatic circuit breaker is not included in the delivery set and can be ordered separately.
To access the control unit, remove the service panel.
External wiring diagram for VUT 160/250/350 PB EC A11 units
ССU
(no-contact)
Power input 230 VAC
Х1
1
L
2
N
3
PE
4
L
5
N
6
c
7
no
8
c
9
no
10
+12V
11
GND
12
B
13
A
14
+5V
15
GND
16
Vo
SM1*
1
2
N
L
SM2*
1
2
N
L
PK1*
2
1
P1
Gnd
A
B
+12V
t °C
TE1
Gnd Vo
+5V
Whit
e
Gr
een
Br
own
Yello
w
Designation
Name
Model
Wire**
CCU*
DX cooler
N0
2x0.75 mm
2
SМ1*
Supply air damper actuator
LF 230
2x0.75 mm
2
SМ2*
Extract air damper actuator
LF 230
2x0.75 mm
2
РК1*
Contact from a fire alarm panel
N0
2x0.75 mm
2
Р1
Control panel
ТЕ1
Outdoor temperature sensor
The sensor is installed by the manufacturer in the intake air duct.
*Is not included in the delivery set
** Maximum connecting cable length is 20 m!
—ELECTRIC SHOCK HAZARD!
DISCONNECT THE UNIT FROM POWER MAINS PRIOR TO ANY OPERATIONS.
THE UNIT MUST BE CONNECTED TO POWER MAINS BY A QUALIFIED ELECTRICIAN.
THE RATED ELECTRICAL PARAMETERS OF THE UNIT ARE GIVEN ON THE
MANUFACTURER’S LABEL.
ANY TAMPERING WITH THE INTERNAL CONNECTIONS IS PROHIBITED
AND WILL VOID THE WARRANTY.
