14
VU..2 250 P ЕС
VU..2 250 P ЕС
3. Control panel connection.
Fig. 6. Control panel view from connector side
1 2 3 4
The control panel view from the connector side is given on Fig. 6.
Fig. 7. Wiring diagram of the unit
M1
Gnd
0-10 V
+
XP12
red
20
18
17
19
16
GND
8
PE
6
N
5
PE
3
N 2
INPUT_EC1
AG
ND
ANA
LOG_IN
7
L
4
L
1
+12V
+5
V
(+0-10)EC1
Circuit
Cont.
GND
13
PE
11
N
10
12
L
9
(+0-10)EC2
21
22
INPUT_EC2
GND
3
1
2
+5 V
ANALOG_OUT
A GND
Circuit
Circuit
4
3
1
2
GND
+12V
(0-10V) EC2
(0-10V) EC1
Control panel
Control board
Sensor
3
1
2
EC/CPU
tach
light blue
,
white
yellow
1
2
3
4 5 6 7
CO
M
+V +V
M2
Gnd
0-10 V
+
XP13
red
3
1
2
EC/CPU
tach
light blue
white
yellow
COM
supply fan
extract fan
XS12
XS13
1
2
1
2
4
4
5
9
8
6 7
5
6 8
7 5
9
brown
white
white
brown
16 17 18
22
21
20
19
brown
brown
yellow
yellow
white
white
green
green
230VAC power input
SW1
1
2
3
yellow/green
brown
blue
PE
N
AC/DC HTS-1 50-48
X1
L
N
PE
PE
Cont.
Circuit
Cont.
Circuit
Cont.
Cont.
Circuit
Cont.
Circuit
Cont.
1 - U_EC1 control voltage;
2 - U_EC2 control voltage;
3 - +12V supply voltage;
4 - Negative power lead.
The wiring diagram of the unit is shown on Fig. 7
4.
Heat exchanger freeze protection
The air-handling unit is equipped with heat exchanger freeze protection facilities which disable the
supply fan at +5 °C in the exhaust air duct downstream of the heat exchanger.
5.
Filter replacement indication
(for DUO/6M901580B only)
Upon elapsing of the time to fi lter replacement (3,000 operating hours) the control panel indicator
will intermittently blink green and red. This signals the need to shut down the unit and disconnect it
from the power mains. Upon completing the above steps clean or replace the fi lters as necessary (see
«Technical maintenance» on page 13).
On completing the fi lter maintenance reset the hour meter. To reset the hour meter switch on the
unit, press the
and the
buttons simultaneously and hold them for at least 10 seconds until the
indicator stops blinking and changes to steady green.
