VTS Medical Systems Ventus VVS021 User manual

VENTUS Compact Air-Handling Units
Operation and Maintenance Manual
DTR-VVS-ver.2.2 (01.2020)

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VTS reserves the right to implement changes without prior notice
Ventus Air Handling Units
OPENING THE INSPECTION PANELS WHEN THE UNIT IS RUNNING OR
STARTING THE UNIT WITH OPEN INSPECTION PANELS ARE STRICTLY
PROHIBITED!
BEFORE OPENING THE INSPECTION PANEL TURN OFF THE UNIT AND WAIT
TWO MINUTES SO ALL MOVING PARTS WOULD STOP!
SWITCH OFF AND PROTECT THE POWER SUPPLY TO PREVENT THE UNIT
FROM UNINTENDED STARTING
!

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VTS reserves the right to implement changes without prior notice
Ventus Air Handling Units
1 Table of Contents
1 Table of Contents ..........................................................................................................................3
1. Introduction...................................................................................................................................6
2. Application and design..................................................................................................................6
3. General Information......................................................................................................................7
4. Pre–Installation ...........................................................................................................................11
4.1. Transport and storage.........................................................................................................11
4.1.1. Receiving Checklist ......................................................................................................12
4.2. Installation Preparation.......................................................................................................12
4.2.1. Foundation ..................................................................................................................13
4.2.2. Service Access..............................................................................................................15
4.2.3. Unit Location Recommendations................................................................................15
4.3. Joining the AHU sections and connecting the ventilation ducts.........................................15
4.4. Connection of heaters and coolers .....................................................................................17
4.5. Draining out condensate.....................................................................................................19
4.6. Electric connection..............................................................................................................20
4.7. AHU components ................................................................................................................20
4.7.1. Hydronic coil exchangers.............................................................................................20
4.7.2. DX coils ........................................................................................................................22
4.7.3. Electric heater .............................................................................................................24
4.7.4. Fan’s motors................................................................................................................25
4.7.5. Air Filters .....................................................................................................................26
4.7.6. Rotary heat exchanger.................................................................................................26
5. Automation .................................................................................................................................27
5.1 Description of controls........................................................................................................27
5.1.1 Introduction.....................................................................................................................27
4.1.2 Mains switch................................................................................................................27
4.1.3 Communication port ...................................................................................................27
4.1.4 Signaling controller status...........................................................................................27
4.1.5 Simplified control panel –HMI Basic UPC...................................................................28
4.2 System Start–Up..................................................................................................................29
4.2.1 Switching on power supply .........................................................................................29
4.2.2 HMI Advanced UPC......................................................................................................30
4.2.3 Selection of operating mode.......................................................................................30

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VTS reserves the right to implement changes without prior notice
Ventus Air Handling Units
4.2.4 Indication of operating mode......................................................................................31
4.3 Technical data .....................................................................................................................32
4.3.1 Operation parameters.................................................................................................32
4.3.2 Carel μPC controller.....................................................................................................33
4.3.3 Cabling.........................................................................................................................34
4.4 Connection ..........................................................................................................................35
4.4.1 Standard connection ...................................................................................................35
4.4.2 Power connection........................................................................................................35
4.4.3 Connection of automation elements ..........................................................................36
6. Preparation for start–up .............................................................................................................40
6.1. Electrical system..................................................................................................................40
6.2. Filters...................................................................................................................................40
6.3. Water heaters......................................................................................................................41
6.4. Electric heaters....................................................................................................................41
6.5. Water coolers, freon coolers and heaters...........................................................................41
6.6. Rotary exchanger.................................................................................................................41
6.7. Fan unit................................................................................................................................41
7. Start-up and adjustment .............................................................................................................42
7.1. Measurement of air quantity and AHU output adjustment. ..............................................42
7.2. Heat output adjustment of water heater............................................................................43
7.3. Adjustment of electric heater .............................................................................................43
7.4. Adjustment of cooler performance.....................................................................................43
8. Operation and maintenance .......................................................................................................44
8.1. Dampers ..............................................................................................................................44
8.2. Filters...................................................................................................................................45
8.3. Heat exchangers..................................................................................................................45
8.3.1. Water heater ...............................................................................................................45
8.3.2. Electric Heater.............................................................................................................46
8.3.3. Water cooler................................................................................................................46
8.3.4. Freon cooler and heater..............................................................................................46
8.3.5. Rotary exchanger.........................................................................................................46
8.4. Silencer section ...................................................................................................................47
8.5. Fan unit................................................................................................................................47
8.5.1. Fans..............................................................................................................................47

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VTS reserves the right to implement changes without prior notice
Ventus Air Handling Units
9. Safety instructions.......................................................................................................................48
10. Information..............................................................................................................................49
11. Technical information to the regulation (U) No 327/2011 Implementing directive
2009/125/EC........................................................................................................................................50

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VTS reserves the right to implement changes without prior notice
Ventus Air Handling Units
1. Introduction
ATTENTION: Warnings, Cautions and Notices appear throughout this document. Read it carefully:
WARNING! Indicates a potentially hazardous situation which, if not avoided, could result in
death or serious injury.
CAUTION! Indicates a potentially hazardous situation which, if not avoided, could result in
minor or moderate injury. It could also be used to alert against unsafe practices.
NOTICE ! Indicates a situation that could result in equipment or property–damage only.
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
efficient, safe and non-failure operation of the device.
Works related to unloading packages with AHUs, transportation of the packages, connecting AHU-to
the related systems as well as maintenance and repair are carried out by qualified specialists or they
are supervised by authorized staff.
The qualified technical personnel is understood as the trained specialists, who due to the
professional experience, knowledge of the subject-related standards, documentation and regulations
concerning operation and safety procedures, have been authorized to perform necessary operations
and who are able to troubleshoot any potential problems.
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 for what they are intended, this documentation and any other
materials provided with the unit contain information designed for the qualified technical personnel
only.
NOTICE ! Connection of the unit sections, connection of related systems, start-up,
operation and maintenance of the device have to comply with the directives and
regulations being in force in the country where the unit is installed.
Guarantee repairs can be carried out only by VTS Service Provider with appropriate
certificates. It is recommended to engage VTS Authorized Service Providers for
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 8-size product line is designed for
recuperation, cooling or/and heating load
conditions of the air flow range 1200–16000
m3/h. The VENTUS air-handling units are
designed for a ventilation system where an
access to the rotating parts of the unit (a fan’s
rotor) is feasible neither from the overpressure
nor sub atmospheric pressure side of the unit.
The ventilation system is understood as
ventilating ducts as well as e.g.: air intake and
air exhaust modules in case of the units
installed outdoor.
AHUs are equipped with a wide range of
functional sections which offers extensive
possibilities of realizing the air treatment
process in the field of such parameters as
temperature (heat recovery, heating: water of
electric heaters, cooling: water or freon
coolers), filtration, primary and secondary
filters as well as noise level reduction.
The basic is the recovery heat exchanger
section with the fans. The table 1 is showing
the list of symbols and functions of the
sections.

Table 1. Functions codding
Symbol
Graphic
Function
Options of functions
F
Air filtration
M5,F7, F9
C
Cooling (hydronic or dx)
Rows: 2, 3, 4, 6
H
Heating (hydronic)
Hot Water –rows: 1, 2, 3, 4
S
Silencer
Standard size
R
Recovery with rotary exchanger
Standard size
3. General Information
The core of the VVS 21-150 compact units is
the section with recovery heat exchanger. It
consists (Fig.2) form filters (1), recovery
heat exchanger (2) (rotary regenerator or
counter flow plate heat exchanger) and fans
(3). That main section is available also with
mixing chamber and with fans placed on one
or both sides of recovery heat exchanger.
Depend on the AHU size and selection it can
be one, two or four direct driven fans. All
with high efficient EC motors.
For the core can be add additional section
for heating, cooling, filtering and noise
reducing.
Fig.1. Example of the basic section: 1 –panel filter, 2 –rotary regenerator, 3 –direct driven fans,
4 –mixing damper

Majority of AHUs configuration is available in
left-hand (LH) and right-hand (RH) version
(fig. 2). The version of the unit is determined
by the flow direction of the air against the
tending side of the unit (the side where the
inspection panels are located). In case of
supply-exhaust units the version is determined
by the flow direction of the air in the supply
section.
Left-hand version Right-hand version
Fig. 2a. Access side of the VVS 21-150 AHU –supply down
Fig. 2b. Access side of the VVS 21-150 AHU –supply upper
Supply air flow direction
Supply air flow direction

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VTS reserves the right to implement changes without prior notice
Ventus Air Handling Units
Fig. 3a. Examples of Compact AHU sections - Rotary heat exchanger section
Fig. 3b. Examples of Compact AHU sections –Heater + Cooler section

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VTS reserves the right to implement changes without prior notice
Ventus Air Handling Units
Table 2. Functionality and dimension of the sections
AHU size
Unit
R2
R1
F9
Hw
C(2-
4R)
C(6R)
Hw(1-
2R)
C(2-4R)
S
E
W
H
H1
L
[mm]
VVS021
967
901
448
1040
1040
240
240
370
550
550
1065
550
VVS030
967
1165
580
1120
1400
240
240
370
550
550
1065
550
VVS040
1174
1165
580
1120
1400
240
240
370
550
550
1065
550
VVS055
1345
1435
715
1040
1240
240
240
630
630
630
1065
630
VVS075
1486
1675
835
1120
1400
240
240
630
630
630
1065
630
VVS100
1666
1875
935
1040
1240
240
240
830
830
830
1065
830
VVS120
1897
1949
972
1040
1240
240
240
830
830
830
1065
830
VVS150
2091
2151
1073
1040
1240
240
240
850
850
850
1065
850
R2
Rotary heat exchanger section (fans on one side of the rotor)
R1
Rotary heat exchanger section (fans on both sides of the rotor)
F9
Filter section
HW
Water heater section
C(2-4R)
Cooler section (2 , 3 or 4 rows of the coil)
C(6R)
Cooler section (6 rows of the coil)
HW(1-2R)C(2-4R)
Water heater and cooler section (1, 2 rows of the heater, 2,3,4 rows of the cooler)
S
Silencer section
E
Empty section