VTS Medical Systems Ventus S Series User manual

VENTUS S-Type Air-Handling Units
Operation and Maintenance Manual
OMM-SVS-ver.2.0 (03.2019)

VTS reserves the right to implement changes without prior notice
VENTUS S-Type Air Handling Units
EN !
ATTENTION:
In order to ensure proper condensateelimination,
this Air Handling Unit requires accurate levelling.
Use a spirit level tool when installing.
Manufactured in accordance with EN 1886, EN 13053

3
Table of Contents
1. INTRODUCTION ..................................................................................4
2. APPLICATION AND DESIGN...............................................................4
3. TRANSPORT AND STORAGE.............................................................6
4. MOUNTING, CONNECTION TO UNIT-RELATED SYSTEMS.............7
4.1. Suspending the VENTUS S-Type unit. .............................................................................7
4.2. Connecting the ventilation ducts………….......................................................................9
4.3. Connection of coolers…………………… ........................................................................10
4.4. Draining out condensate…………………........................................................................11
4.5. Electric connection…………………….. ...........................................................................12
4.6. Fan sets…………………………………… ..........................................................................12
4.7. Automatic control…………………………….....................................................................15
5. PREPARATION FOR START-UP.......................................................16
5.1. Electrical system……………………….. ...........................................................................16
5.2. Filters………………………………………….......................................................................16
5.3. Fan unit……………………………………… .......................................................................16
6. START-UP AND ADJUSTMENT ........................................................17
6.1. Measurement of the air quantity and AHU output adjustment....................................17
7. OPERATION AND MAINTENANCE...................................................18
7.1. Dampers………………………………………......................................................................19
7.2. Filters……………………………………… ..........................................................................19
7.3. Cooler…………………………………………. .....................................................................20
7.4. Fan unit……………………………………… .......................................................................20
7.5. Test measurements……………………….........................................................................20
8. SAFETY INSTRUCTIONS..................................................................20
9. INFORMATION...................................................................................21

VTS reserves the right to implement changes without prior notice
VENTUS S-Type Air Handling Units
1. INTRODUCTION
In-depth familiarization with the content of this manual, assembly and operation of the air-handling unit in line
with the instructions provided and obeying all safety regulations constitute the basis of an efficient, safe and non-
failure operation of the device.
Works related to unloading packages with AHU subassemblies, transportation of the packages, AHU blocks and
elements, connecting AHU-related systems as well as maintenance and repair have to be carried out by qualified
specialists or have to be supervised by the authorized personnel.
The qualified technical personnel is understood as the trained specialists, who have been authorized
to perform necessary operations and are able to troubleshoot all potential problems on the basis of their
professional experience, knowledge of the subject-related standards, documentation and operational regulations
and safety procedures.
This operation and maintenance manual does not cover all possible variants of the units configurations, examples
of their assembly and installation as well as start-up, operating, repairing and maintenance. If the units are used
in the way they were intended to, this documentation and any other materials provided with the unit contain
information designed for the qualified technical personnel.
Connection of the AHU to related systems, start-up, operation and maintenance of the device
have to comply with the directives and law regulations in force in the country where the unit is
installed.
AHU SVS 35-100 guarantee repairs can be carried out only by a VTS Service Providers having
the appropriate certificates. It is recommended to rely on VTS Authorized Service Providers in
such matters as the installation, start-up, maintenance and repairs of the AHU units.
This manual should always be kept handy for reference and be easily available for the servicing
personnel.
2. APPLICATION AND DESIGN
The series of SVS provides 5 sizes of a unit. The product line is designed for air handling processes in range
of capacity from 1800 m3/h to 10400 m3/h. The AHUs SVS 35-100 are manufactured as suspended units and
assigned for installation inside of building. The SVS air-handling units are designed for a ventilation system
where the rotating parts of the unit (a fan’s rotor) are accessible neither from the overpressure nor underpressure
side of the unit. The ventilation system is understood as a net of ventilating ducts.
The SVS AHUs have the following functions: 1- filtration (panel filters), 2- cooling (water cooler 4 and 6 rows, DX
cooler 3 and 4 rows), 3-fan, available with AC and EC motors, 4 –air damper, 5 –outlet flexible connection,
fig.1.
4

5
Fig.1. Example of suspended AHUs type SVS 35-100
Tab.1 Dimensions of AHUs type SVS 35-100
AHU type
AHU external sizes [mm]
AHU mass [kg]
Air damper
size [mm]
Flexible connection size [mm]
Length
Wide
Height
4R coil
6R coil
-
inlet (w x h)
outlet (w1 x h1)
SVS-35
1 120
1 160
530
98
106
342 x 264
1100 x 470
342 x 264
SVS-50
1 120
1 300
595
114
124
365 x 275
1240 x 535
365 x 275
SVS-70
1 120
2 000
530
166
181
1294 x 264
1940 x 470
1294 x 264
SVS-85
1 120
2 000
655
187
205
1270 x 275
1940 x 595
1270 x 275
SVS-100
1 120
2 000
655
200
220
1425 x 275
2140 x 595
1425 x 275
This type of suspended AHUs is available only in the right-hand (RH) configuration (fig.2 ).

VTS reserves the right to implement changes without prior notice
VENTUS S-Type Air Handling Units
Fig. 2 Right-hand version of the VS 35-100 AHU
3. TRANSPORT AND STORAGE
The SVS AHUs are delivered assembled
After the AHUs, are delivered in closed, properly labeled and undamaged palettes and after
signing the consignment note by the client representative, the units become a property of the
customer.
Right after the unit is delivered, check the condition of the package and examine if all necessary
elements have been delivered, in conformity with the attached specification and consignment
note.
Unloading AHUs, and transporting them to the installation site should be carried out by the
qualified personnel, with the use of special equipment.
Palettes should be unloaded and transported to the AHU’s installation site using a fork lift (fig.3) or a crane (fig4).
Fig.3. Using a forklift to transport the unit
6

7
Fig. 4 Transport with the use of a crane
The units have to be transported in their working position (horizontally) and they should not be stored one on the
other.
The units and their optional components should be stored in the following conditions:
- relative humidity in the room: φ < 80 % at t (temperature) = 20ºC
- ambient temperature: -40ºC < t < +60ºC
- the devices should be out of the reach of any caustic dust, gas or steam or any other chemical substances
which may have pro-corrosive influence on the unit and its components.
While storing the unit, its plastic packaging must be unsealed.
Any damages caused by the improper transportation, unloading or storage are not covered by the
guarantee and any claims laid by way of the aforementioned issues will not be examined by VTS.
4. MOUNTING, CONNECTION TO UNIT-RELATED SYSTEMS
Connecting supplied SVS 35-100 units to the installation falls within the competence of the Client.
By default the SVS 35-100 AHU should be suspended in horizontal position.
4.1. Suspending the VENTUS S-Type unit.
Suspension of an AHU as a part of ventilation ducts is carried out using additional bars (out of VTS delivery)
(fig.6). Application of the screwed rods facilitates and speeds up the suspension and leveling of AHU (the
screwed rods are not included).
The AHU should be levelled according to the two axis double spirit level, fixed on the bottom of the unit
near the syphon.
It is recommended to use vibro absorber to suspend the units to reduce the vibrations transmitted to the
supporting structure.

VTS reserves the right to implement changes without prior notice
VENTUS S-Type Air Handling Units
Fig.5. Example of suspending the AHU sections
Fig.6. Suspension grips arrangement
The space between the slings must allow for the assembly of the siphon (if there are no the special pump) which
drains the condensate out of the unit.
On both sides of the AHU at the service hole level should be free space min. 500mm to allow for a
possible replacement the fan (fig.6).
8

9
Fig.7. Examples of AHU installation
*H - see table 3
4.2. Connecting the ventilation ducts
Attention: Before connecting the ducts, it is necessary to make an electric connection of motor
fan, in order to ensure an appropriate direction of the fan rotation.
The ventilation ducts should be connected to the AHU with flexible connections (optional accessory) which
suppress the vibrations of the unit and level the coaxial deflection of the duct and the AHU outlets. Flexible
connections are equipped with flanges and sealing. The flexible flanges should be connect with ducts by
drilling screws (Fig.8a) or additional clamping elements (Fig. 8b). Materials to connect ducts are not supplied as
standard delivery.
The flexible connection should be stretched to about 110 mm.
The ducts connected to the AHU have to be suspended or underpinned with dedicated support elements.
Conducting the ducts with the fittings should be done in such a way so as to avoid eliminate possible increase of
the noise level in the ventilation system.
a)
b)
Fig.8. Duct’s connection rules

VTS reserves the right to implement changes without prior notice
VENTUS S-Type Air Handling Units
4.3. Connection of coolers
Connection of coolers should be done in such a way so as not to allow for stresses exchanger’s connections
which may result in mechanical damages or leakages. The pipeline weight and thermal stresses cannot be
passed onto the exchanger's connections. Depending on local conditions, please use the compensation at the
inlet and outlet of the pipeline system, in order to level the pipeline's linear expansion. During assembly of the
supply system to the cooler equipped with the screwed connections, counter the exchanger's connection with
additional wrench (fig.9).
The supply system should be planned in such a way so that it does not collide with the other AHU sections. The
way of connecting the exchangers with the supply system should allow for an easy pipeline disassembly in order
to remove the exchanger from the AHU, during maintenance and service operations.
Fig.9. Securing the screwed connections of the exchanger
Table 2. Diameters of coolers connection pipes
AHU type
Rows number
Connection pipe
diameter
Rows number
Inlet connection
pipe diameter
[mm]
Outlet connection
pipe diameter
[mm]
Water cooler
DX cooler
SVS-35
4R
DN32
6
2xØ16
2xØ28
6R
SVS-50
4R
DN50
6
2xØ22
2xØ35
6R
SVS-70
4R
DN50
6
2xØ22
2xØ35
6R
SVS-85
4R
DN50
6
2xØ22
2xØ35
6R
SVS-100
4R
DN50
6
2xØ22
2xØ42
6R
Inlet and outlet exchanger's connections should be connected so that the exchanger operates in a counter-
current way. Streamwise operation results in the lower average discrepancy of temperatures, which influences
the exchanger’s performance.
Examples of connecting inlet and outlet pipelines for various AHU versions shown in the picture.
10