VTS reserves the right to implement changes without prior notice
VENTUS S-Type Air Handling Units
4.5. Electric connection
Electric connection of AHU should be carried out by the qualified personnel and should be done in accordance
with all standards and regulations being in force in the country where the unit is installed. The cross-section
and type of cables (e.g. a shielded cable) feeding individual functional segments should be selected basing on
nominal current and specific operation conditions (e.g. ambient temperature, way of cabling, distance from the
power supply).
Before switching on the power supply, check conformity of voltage and frequency of a supply network with the
data shown on the device's rating plate. The permissible fluctuation of the supply voltage and its frequency to the
values shown on the rating plate is ±5%. If a discrepancy exists, the device must not be connected.
4.6. Fan sets
Fan sets can be supplied with AC or EC motor, depend on the choose option and AHU selection.
Fans' motors are adapted to operate in a dusty and humid environment and their insulation (F-class) is adapted
to cooperate with the frequency converter. No additional means inuring the motor against conditions of the AHU
fans' section are required.
Table 4. Technical data of fan sets
Unit Size FAN Model
AC Motor
Rated
Output
Poles
Efficiency
Class
Protection
Grade
Rated Current at
415V/3ph
/50Hz
230V/1ph
/50Hz
380V/3ph
/50Hz
400V/3ph
/50Hz
400V/3ph
/60Hz
[-]
[-]
[kW]
[-]
[-]
[-]
[A]
[A]
[A]
[A]
[A]
SVS-35
VS 315
1,5
2
IE2
IP55 / F
3,1
5,54
3,36
3,1
3,19
SVS-50
VS 355
1,5
2
IE2
IP55 / F
3,1
5,54
3,36
3,1
3,19
SVS-70
VS 315 x 2
1,5 x 2
2
IE2
IP55 / F
6,2
11,08
6,72
6,2
6,38
SVS-85
VS 400 x 2
1,5 x 2
2
IE2
IP55 / F
6,2
11,08
6,72
6,2
6,38
SVS-100
VS 400 x 2
1,5 x 2
2
IE2
IP55 / F
6,2
11,08
6,72
6,2
6,38
Attention: before connecting the fan set one should check carefully the rated parameters of
both power supply and th
e converter’s output.
One should connect the fan set by means of fault protection appropriate for the applied frequency converter. In
case of powering with the use of a frequency converter it is not necessary to connect the motor’s PTC protection.
Overload protection is covered by the frequency converter by means of activating specified parameters and
introducing the motor’s rated data in accordance with the manual provided together with the frequency converter.
Unit Size FAN Model
EC Motor
Rated
Output
Efficiency
Class
Protection
Grade
Rated Current
at
230V/1ph/50Hz
[-]
[-]
[kW]
[-]
[-]
[A]
SVS-35
VS 315
0,75
IE4
IP54 / F
3,7
SVS-50
VS 315
0,75
IE4
IP54 / F
3,7
SVS-70
VS 315 x 2
0,75 x 2
IE4
IP54 / F
7,2
SVS-85
VS 315 x 2
0,75 x 2
IE4
IP54 / F
7,2
SVS-100
VS 315 x 2
0,75 x 2
IE4
IP54 / F
7,2
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