Komfovent KLASIK Series User manual

TECHNICAL PASSPORT
AND INSTALLATION GUIDE
OF KLASIK AIR HANDLING UNITS

3
UAB KOMFOVENT we reserve the right to make changes without prior notice
KBP2-18-10
This symbol indicates that this product is not to be disposed of with your household waste, according to the WEEE Directive
(2002/96/EC) and your national law. This product should be handed over to a designated collection point, or to an authorised col-
lection site for recycling waste electrical and electronic equipment (EEE). Improper handling of this type of waste could have
a possible negative impact on the environment and human health due to potentially hazardous substances that are generally
associated with EEE. At the same time, your cooperation in the correct disposal of this product will contribute to the effective
usage of natural resources. For more information about where you can drop off your waste equipment for recycling, please
contact your local city ofce, waste authority, approved WEEE scheme or your household waste disposal service.
Content
1. EQUIPMENT SERIES......................................................................................................................................4
2. CONSTRUCTION............................................................................................................................................. 4
2.1. Filter section.............................................................................................................................................. 6
2.2. Recirculation section ................................................................................................................................. 8
2.3. Fan section................................................................................................................................................ 9
2.4. Rotary heat exchanger section ............................................................................................................... 11
2.5. Plate heat exchanger section.................................................................................................................. 12
2.6. Counter-fow plate heat exchanger section.............................................................................................. 13
2.7. Liquid coupled heat exchanger section................................................................................................... 14
2.8. Water-heater section ............................................................................................................................... 14
2.9. Cooler section ......................................................................................................................................... 15
2.10. Electric heater section............................................................................................................................. 16
2.11. Inspection access.................................................................................................................................... 16
2.12. Sound attenuator section ........................................................................................................................ 17
2.13. Humidication section ............................................................................................................................. 17
3. INSTALLATION GUIDE ................................................................................................................................. 18
3.1. VERSO Air Handling Units marking ....................................................................................................... 19
3.2. Unit transportation................................................................................................................................... 20
3.3. Selection of mounting location ................................................................................................................ 22
3.4. Electrical installation................................................................................................................................ 24
3.5. Connection of sections............................................................................................................................ 25
3.6. Roof installation....................................................................................................................................... 26
3.7. Connection of water heat exchangers..................................................................................................... 28
3.8. Air Dampers ............................................................................................................................................ 28
3.9. Connection to the air duct ....................................................................................................................... 29
3.10. Water trap installation.............................................................................................................................. 30
3.10.1. Water trap installation for a unit section mounted on the suction side ........................................ 30
3.10.2. Water trap installation for a unit section mounted on the pressure side...................................... 30

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KBP2-18-10
1. EQUIPMENT SERIES
KLASIK R
Ventilation units with rotary heat exchanger. Tempera-
ture efciency up to 85%.
KLASIK P
Ventilation units with plate heat exchanger. Tempera-
ture efciency up to 70%.
KLASIK CF
Ventilation units with counter ow plate heat exchang-
er. Temperature efciency up to 92%.
KLASIK S
Air supply or exhaust units.
KLASIK RA
Ventilation units with liquid cupled heat exchanger.
Temperature efciency up to 63%.
KLASIK Hg, RA Hg, P Hg
Ventilation equipment for hygienic purposes.
S Hg, RA Hg, P Hg series of ventilation equipment for
operation in clean rooms are subject to more stringent
sanitary requirements. Inner surfaces of S Hg, RA
Hg, P Hg series equipment are straight-lined, have no
thresholds and bumps to harbour contamination and
pathogens. All connections are additionally sealed with
dust-tight sealant.
The bottom of these devices (and, as the case may
be, all internal walls) are made of stainless steel, which
allows to clean the interior surface with disinfectants.
2. CONSTRUCTION
Walls in KLASIK units are made of two galvanized steel
sheets lled with heat and sound insulating non-com-
bustible material. Mineral wool is used for thermal in-
sulation (λ = 0.036 W/mK; ρ = 32 kg/m3). Ventilation
units are available with 45 mm or 50 mm thick walls,
and tin sheets coated with zinc (275 g/m2). Ventilation
unit walls can be:
• Galvanized sheet steel – a standard option
• Galvanized sheet steel, external/internal spray
painted powder
• Stainless steel plate on the inside (the whole inside
or just the bottom). In this case, the ventilation unit
is designed for the ventilation of clean premises.
The housing design reduces the «heat bridge» effect.
All ventilation unit doors are sealed with a special
prole rubber gasket with an air gap. It is attached
mechanically, and additionally bonded with hygienic
glue. This leak-proof design is leak-proof and durable.
Based on the standard CEN preEN 1886, the housing
of KLASIK units meets the tightness class A and its
total heat transfer is T3 class.
Easy to use door locks and handles ensure safe unit
maintenance.

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KBP2-18-10
Easy to use door locks and handles ensure safe unit
maintenance.
Roof
Ventilation units that operate outdoors can be additio-
nally equipped with a roof with water drainage to the
opposite side of inspection.
Height adjustable feet
If you order the ventilation unit construction frame with
the height adjustable feet, it will be much easier to
build the unit at the site.
Hoods and outdoor grille
Ventilation units operated outdoors can be additionally
equipped with hoods and outdoor grille on the air sup-
ply and exhaust openings or nets.
Air dampers
Air shutters in ventilation units are made of aluminium
blades provided with a rubber seal, to ensure tight-
ness.

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KBP2-18-10
2.1. Filter section
Air is cleaned of various origin and size particles of
dust in the ventilation units with synthetic and glass b-
er lters. 99.9% (by number) of outdoor airborne parti-
cles are smaller than 1 mm. By mass, the said particles
make up 30% of the airborne dust. Thus, if the air from
the city is supplied to public and residential buildings,
M5-F7 class lters are sufcient to achieve the hy-
giene standards of air cleanliness. In areas where dust
content is low (e.g. forested places, areas away from
roads, industry, etc.) air supplied to the rooms should
be cleaned less extensively.
G3, G4, or M5 prelters should be used upstream
F8, or at higher-end lters.
Air supplied to industrial facilities usually only has
to be cleaned slightly (G3, G4 class – if there are no
special technological requirements)
Air ltering protects ventilation equipment against
contamination, and prolongs the service life.
KLASIK
size
B H b h L1L2L3L4
mm
1 1015 555 700 300 400 600 700 500
2 1155 655 900 400 400 600 700 500
3 1305 710 1000 500 400 600 700 500
4 1505 810 1200 600 400 600 700 500
5 1745 955 1400 700 500 600 700 500
6 1905 1010 1600 800 500 600 700 500
7 2140 1130 1800 900 500 600 700 500
8 2310 1265 2000 1000 500 600 700 500
9 2310 1490 2000 1200 500 600 700 500
10 2310 1570 2000 1300 500 600 700 500
11 2590 1650 2200 1400 540 640 740 540
12 2890 1830 2500 1600 540 640 740 540
1 – Filters section with compact lter, 2 – Filters section with pocket lter, 3 – Filters section with carbon lter,
4 – Filters section with HEPA lter.
Unit weight is indicated in the technical offer, attached to the passport of the unit.
b × h
800* B
H
* 11, 12 size L = 840 mm.

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KBP2-18-10
FILTERS USE IN THE FILTER SECTIONS
Filters section with compact/pocket lter:
KLASIK
size
Quantity
psc.
Dimensions
width × height –pockets quantity × length of pockets
G4 Pre-lter G4 M5; M6; F7; F9
1 1 792×392×46 792×392-10×360 792×392-10×500
2 2 490×490×46 490×490-6×360 490×490-6×500
3 2 490×490×46 490×490-6×360 490×490-6×500
4 2 592×592×46 592×592-8×360 592×592-8×500
5 4 392×792×46 392×792-4×360 392×792-4×500
6 4 392×792×46 392×792-4×360 392×792-4×500
7 4 490×892×46 490×892-5×360 490×892-6×500
8 4 + 4 490×592×46
490×490×46
490×592-6×360
490×490-6×360
490×592-6×500
490×490-6×500
9 8 490×592×46 490×592-6×360 490×592-6×500
10 4 + 4 490×892×46
490×490×46
490×892-5×360
490×490-6×360
490×892-6×500
490×490-6×500
11 4 + 4 + 4
592×592×46
592×490×46
592×287×46
592×592-8×360
592×490-8×360
592×287-8×360
592×592-8×500
592×490-8×500
592×287-8×500
12 9 892×490×46 892×490-12×360 892×490-14×500
Filters section with a HEPA lter:
KLASIK
size
Quantity Dimensions
width × height × length
psc.H12; H13; H14
1 1 610×305×292
2 1 + 1 610×305×292
305×305×292
3 2 457×457×292
4 2 610×610×292
5 2 + 1 610×610×292
305×610×292
6 2 + 1 610×610×292
305×610×292
7 3 + 3 610×610×292
610×305×292
8 3 + 3 610×610×292
610×305×292
9 6 610×610×292
10 6 610×610×292
11 6 + 2 610×610×292
305×610×292
12 8 + 4 610×610×292
610×305×292
Filters section with a carbon lter:
KLASIK
size
Quantity Dimensions
width × height × length
psc.ACF
1 1 613×308×457
2 1 613×458×457
3 1 613×458×457
4 2 613×613×457
5 2 + 1 613×613×457
308×613×457
6 2 + 1 613×613×457
458×613×457
7 3 + 3 613×613×457
613×308×457
8 3 + 3 + 1
613×613×457
613×458×457
308×613×457
9 6 + 2 613×613×457
308×613×457
10 6 + 2 613×613×457
308×613×457
11 3 + 3 + 3
613×613×457
613×458×457
613×308×457
12 8 + 4 613×613×457
613×308×457

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UAB KOMFOVENT we reserve the right to make changes without prior notice
KBP2-18-10
2.2. Recirculation section
Recirculation section is a chamber with two air inlets and
dampers intended for controlling ratio of the supply and ex-
haust air.
Thermal energy is incorporated by mixing part of the in-
door exhaust air with the air supplied to the premises.
Recirculation cannot be used if the exhaust air contains
unwanted fumes, gases, or other harmful substances.
Recirculation section with dampers on the outside:
Recirculation section with dampers inside the section:
KLASIK
size
B H b h b‘ h‘ L L1
mm
1 1015 555 700 300 700 300 600 507,5
2 1155 655 900 400 900 300 600 577,5
3 1305 710 1000 500 1000 400 700 652,5
4 1505 810 1200 600 1200 400 700 752,5
5 1745 955 1400 700 1400 400 700 872,5
6 1905 1010 1600 800 1600 500 850 952,5
7 2140 1130 1800 900 1800 600 950 1070
8 2310 1265 2000 1000 2000 600 950 1155
9 2310 1490 2000 1200 2000 700 1050 1155
10 2310 1570 2000 1300 2000 700 1050 1155
11 2590 1650 2200 1400 2200 800 1190 1295
12 2890 1830 2500 1600 2500 800 1190 1445
KLASIK
size
B H b h b‘ h‘ L L1
mm
1 1015 555 700 300 700 300 600 535
2 1155 655 900 400 900 300 600 595
3 1305 710 1000 500 1000 400 700 685
4 1505 810 1200 600 1200 400 700 785
5 1745 955 1400 700 1400 400 700 895
6 1905 1010 1600 800 1600 500 850 985
7 2140 1130 1800 900 1800 600 950 1080
8 2310 1265 2000 1000 2000 600 950 1185
9 2310 1490 2000 1200 2000 700 1050 1185
10 2310 1570 2000 1300 2000 700 1050 1185
11 2590 1650 2200 1400 2200 800 1190 1295
12 2890 1830 2500 1600 2500 800 1190 1445
b×h
L B
H
L1 b' × h'
b' × h'
b×h
125
L B
H
L1

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UAB KOMFOVENT we reserve the right to make changes without prior notice
KBP2-18-10
2.3. Fan section
Depending on the required air ow and static pressure,
plug type fans or double inlet centrifugal fans with belt
drive are used in KLASIK series units. Fans are ba-
lanced statically and dynamically, based on ISO 1940
standard and correspond to class G2.5/6,3 (at maxi-
mum revs). Thus, even at maximum fan speed, vibra-
tion is minimal and is within all requirements.
Plug fans with EC motor
Highly efcient in all operating areas, EC motors are
available in all types of KLASIK units and correspond
to the IE4 premium efciency level. High efciency is
determined by low energy consumption, high efcien-
cy factor and the best values of the SFP factor. By us-
ing EC fans in Klasik units the following advantages
are achieved:
• extremely high efciency up to 92%;
• valuable energy saving up to 30% comparing with
AC in some applications;
• integrated motor controller, no need for a frequency
converter;
• very smooth and silent operation;
• long-life;
• compact construction.
Plug fans with AC motor
Main advantages:
• high efciency,
• smoothly adjustable productivity,
• good acoustic characteristics,
• durability.
The laminar stream after the fan wheel allows to
lower losses of pressure in a network; there is an op-
portunity to connect the device for measurement of a
stream of air.
Fans with backward curved
blades
Fans with forward curved
blades
The fan is connected to the casing by frame with vi-
broizolators. AC three-phase fan motors (400 V, 50 Hz)
are controlled by frequency converters.
Class of safety IP55 on IEC 34-5, windings of mo-
tors has isolation of a category “F”. Working tempera-
ture up to 40°C.
Double-inlet centrifugal fans with belt drive and with
backward curved blades feature particularly high ope-
rational stability, ensure high pressure, and their ef-
ciency ratio is 85%.
Fans with forward curved blades running at low speed,
have a low noise level and the efciency to 70%.

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UAB KOMFOVENT we reserve the right to make changes without prior notice
KBP2-18-10
KLASIK
size
B H b h L L*
mm
1 1015 555 700 300 600 800
2 1155 655 900 400 650 900
3 1305 710 1000 500 750 900
4 1505 810 1200 600 800 1000
5 1745 955 1400 700 900 1300
6 1905 1010 1600 800 1000 1300
7 2140 1130 1800 900 1050 1300
8 2310 1265 2000 1000 1300 1490
9 2310 1490 2000 1200 1300 1490
10 2310 1570 2000 1300 1300 1490
11 2590 1650 2200 1400 1340 1840
12 2890 1830 2500 1600 1340 2240
* Fan section with belt drive
BL
H
b × h
Fan motors must be operated by frequency converters!
At particular frequency, smaller than rated, vibration is possible. At frequencies,
when vibration starts, the air handling unit can’t be exploitable.
The unit must be grounded according to the grounding installation rules consistent
with EN61557 BS 7671!

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UAB KOMFOVENT we reserve the right to make changes without prior notice
KBP2-18-10
2.4. Rotary heat exchanger section
Rotary heat exchanger
Used in KLASIK R series units.
Temperature efciency factor – up to 85%.
Possible wave heights: 1,35 mm; 1.5 mm; 1.65 mm;
2.1 mm.
Rotors may be offered of four types:
• aluminium;
• aluminium with a hygroscopic covering;
• aluminium with an epoxy paint covering on em-
bossed rotor edges;
• aluminium with deep epoxy coating “Blygold” tech-
nology.
Rotary heat exchanger speed is controlled by fre-
quency converter, depending on the air temperature.
Rotation speed – up to 12 rpm.
KLASIK
size
B H L L*
mm
1 1015 1110 480 530
2 1155 1310 480 530
3 1305 1420 480 530
4 1505 1620 500 560
5 1745 1910 500 560
6 1905 2020 500 560
7 2140 2260 500 560
8 2310 2530 500 560
9 2610 2980 620 580
10 2810 3140 620 580
11 3115 3300 620 620
12 3220 3660 620 620
* Outdoor version of device
LB
H
The difference between the supply and exhaust air volume must be 0.66 ... 1.5!
Otherwise, the specications are only theoretical!
When the temperature after the heat exchanger is ≤ 0 °C, it is necessary to provide
protection from freezing, for example, electric heater upstream the heat exchanger.

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UAB KOMFOVENT we reserve the right to make changes without prior notice
KBP2-18-10
2.5. Plate heat exchanger section
Plate-type heat exchanger
Used in KLASIK P series units.
Temperature efciency factor – up to 70% (in wet con-
ditions). The heat exchanger is sealed, the two air
streams are separated, contaminated air heat recov-
ery is optional.
Aluminium plate heat exchangers are used in the
units.
For recuperated heat regulation and protection of
frost, the heat exchanger is provided with the air by-
pass valve. Each unit with a plate heat exchanger is
equipped with a steel drip pan for condensate collec-
tion and drainage.
KLASIK
size
B H L L*
mm
11015 1110 850 1000
21155 1310 1140 1250
31305 1420 1140 1250
41505 1620 1140 1250
51745 1910 1440 1600
61905 2020 1740 1850
72140 2260 1740 1850
82310 2530 1740 1850
92310 2980 2290 2150
10 2310 3140 2300 2420
11 2590 3300 2350 2420
12 2890 3660 2650 2750
* with the drip pan on the top
L B
H
The difference between the supply and exhaust air volume must be 0.66 ... 1.5!
Otherwise, the specications are only theoretical!
When the temperature after the heat exchanger is ≤ 0°C, it is necessary to provide
protection from freezing, for example, electric heater upstream the heat exchanger.
When the air ow exceeds 2.5 m/s, the drop tray is recommended!

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KBP2-18-10
2.6. Counter-fow plate heat exchanger
section
Counter-ow plate heat exchanger
Used in KLASIK CF series units.
Temperature efciency factor – up to 92% in wet con-
ditions. The plate heat exchanger is equipped with
automatic by-pass. Aluminium plates are made of an
aluminium alloy resistant to sea water.
L B
H
The difference between the supply and exhaust air volume must be 0.66 ... 1.5!
Otherwise, the specications are only theoretical!
When the temperature after the heat exchanger is ≤ 0°C, it is necessary to provide
protection from freezing, for example, electric heater upstream the heat exchanger.
When the air ow exceeds 2.5 m/s, the drop tray is recommended!
KLASIK
size
B H L
mm
1 1015 1110 1220
2 1155 1310 1360
3 1305 1420 1510
4 1505 1620 1640
5 1745 1910 1640
6 1905 2020 1920
7 2140 2260 2210
8 2310 2530 2490
9 2620 2980 2490
10 2620 2980 2490
11 2960 3140 2850
12 3350 3660 3120

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UAB KOMFOVENT we reserve the right to make changes without prior notice
KBP2-18-10
2.7. Liquid coupled heat exchanger
section
Temperature efciency – up to 63%. In this system,
the warming part of heat exchanger is in the supply air
stream and the cooling part – in the exhaust stream.
Both parts of the heat exchanger are connected with
pipes to a common circuit, which circulates a mixture
of water and glycol. This type of equipment is used only
where air ows must be completely separated from
each other, as well as when, taking into account the
characteristics of the project, or other requirements,
they must be on different oors.
Heat exchangers are made of copper tubing and al-
uminium ns.
2.8. Water-heater section
Water air heaters
Normally are used with aluminium ns and copper
pipes. Can be equipped with thread joint to connect
freezing sensor.
The heater can be removed from the inspection side,
by disconnecting the coolant pipes and unscrewing the
panel mounting screws.
All heaters are mounted on rails, therefore they are
easy to remove.
• Maximum pressure – 21 bar.
• Maximum water temperature +100ºC.
(by special order up to + 130ºC).
• Heated air temperature up to +40ºC.
KLASIK
size
B H b h
mm
1 1015 555 700 300
2 1155 655 900 400
3 1305 710 1000 500
4 1505 810 1200 600
5 1745 955 1400 700
6 1905 1010 1600 800
7 2140 1130 1800 900
8 2310 1265 2000 1000
9 2310 1490 2000 1200
10 2310 1570 2000 1300
11 2590 1650 2200 1400
12 2890 1830 2500 1600
B
b
h
H
For ventilation units operated outdoors when the ambient air temperature tamb < 0°C,
it is necessary to use water-ethylene glycol mixture to prevent freezing of water
and damage to the heat exchanger.

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UAB KOMFOVENT we reserve the right to make changes without prior notice
KBP2-18-10
2.9. Cooler section
Water air coolers
As a standard, are used with aluminium ns and cop-
per pipes.
Maximum pressure – 21 bars.
Air cooler section is equipped with a drain outlet and
a siphon.
Direct evaporation air coolers
Normally are used with aluminium ns and copper
pipes.
Maximum pressure – 42 bars.
The cooler section is equipped with a drain outlet and
a siphon. Direct evaporation air cooler capacity can be
divided into steps.
The cooler along with the drainage outlet and the drip
tray can be removed from the inspection side, by dis-
connecting the pipes and unscrewing the panel mount-
ing screws. All coolers in the devices are mounted on
rails, so they are easy to remove.
KLASIK
size
B H b h
mm
1 1015 555 700 300
2 1155 655 900 400
3 1305 710 1000 500
4 1505 810 1200 600
5 1745 955 1400 700
6 1905 1010 1600 800
7 2140 1130 1800 900
8 2310 1265 2000 1000
9 2310 1490 2000 1200
10 2310 1570 2000 1300
11 2590 1650 2200 1400
12 2890 1830 2500 1600
B
b
h
H
For ventilation units operated outdoors when the ambient air temperature tamb < 0°C,
it is necessary to use water-ethylene glycol mixture to prevent freezing of water
and damage to the heat exchanger
When the air ow exceeds 2.5 m/s, the drop tray is recommended!

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UAB KOMFOVENT we reserve the right to make changes without prior notice
KBP2-18-10
2.10. Electric heater section
Electric air heaters
In manufacture, three-phase (400 V/50 Hz) stainless
steel heating elements are used.
There is two-stage protection against overheating.
Safety class IP54 according to IEC 335.
Heated air temperature – up to +40°C.
Remark: accurate measurements and other data of
electric air heater in KLASIK ventilation equipment se-
lection program.
KLASIK
size
B H b h
mm
1 1015 555 700 300
2 1155 655 900 400
3 1305 710 1000 500
4 1505 810 1200 600
5 1745 955 1400 700
6 1905 1010 1600 800
7 2140 1130 1800 900
8 2310 1265 2000 1000
9 2310 1490 2000 1200
10 2310 1570 2000 1300
11 2590 1650 2200 1400
12 2890 1830 2500 1600
2.11. Inspection access
The inspection access is mounted between various
elements of the ventilation unit. It is used for the ven-
tilation equipment maintenance, equipment element
cleaning and working process monitoring.
The inspection access length can be 300, 400, 500,
700, 800 mm.
KLASIK
size
B H
mm
1 1015 555
2 1155 655
3 1305 710
4 1505 810
5 1745 955
6 1905 1010
7 2140 1130
8 2310 1265
9 2310 1490
10 2310 1570
11 2590 1650
12 2890 1830
The inspection access door is made in two types:
1. Opened door with handles and hinges.
2. Removable panels, xed with spins.
The door can be equipped with locks and inspection
windows
b
B
h
H
L B
H

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UAB KOMFOVENT we reserve the right to make changes without prior notice
KBP2-18-10
2.12. Sound attenuator section
Where a ventilated room is subject to extremely high de-
mands on noise levels, UAB KOMFOVENT makes ven-
tilation units with integrated noise suppression sections.
The housing of sound suppression sections is the
same as in ventilation units – with full insulation and a
high level of noise suppression.
The suppression section is equipped with partitions
lled with noise absorbing loose mineral wool panels,
which are overlaid with a thin layer of polypropylene
bers (to prevent dust), and perforated galvanized
steel sheets.
Partition number and size depends on the require-
ments of the noise reduction level.
2.13. Humidication section
Low-pressure steam humidier or adiabatic humidier
can be used.
Air humidication with low pressure water steam is
cost-effective, hygienic and highly accurate method
of air humidication. Related air humidity may be up
to 90%. The humidication section is equipped with a
stainless steel bath and a drain pipe.
There are 2 possible types of the adiabatic humidi-
er:
– by spraying water;
– using a porous material.
Downstream the humidier, moisture in the air remains
only in the form of steam. The special design of the
device does not allow water droplets to pass – each
humidication section is equipped with polypropylene
drop catchers.
Water is removed through a stainless steel drain tray
and a copper pipe.
Air humidier after using a
porous material
Air humidication with
low pressure water
steam
Noise suppression of 45 mm thick walls of ventilation
units
Frequency
(Hz) 63 125 250 250 1000 2000 4000 8000
Suppres-
sion (dB) 11 13 17 28 30 34 42 46
Noise suppression of 50 mm thick walls of ventilation
units
Frequency
(Hz) 63 125 250 250 1000 2000 4000 8000
Suppres-
sion (dB) 13 15 20 28 28 25 29 30
For hygienic purposes, it is advisable to provide the
automatic periodic ushing function of the humidica-
tion section. During section ushing air is not supplied
to the ventilation system. After washing, water is comp-
letely drained from the drain bath.
For air humidication with water, the must
have a water preparation system!

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UAB KOMFOVENT we reserve the right to make changes without prior notice
KBP2-18-10
3. INSTALLATION GUIDE
Ventilation units may only be installed by qualied personnel with sufcient profes-
sional expertise and knowledge about ventilation systems, their installation as well
as electrical safety requirements, and able to work without endangering themsel-
ves and others.
Each drain outlet of the condensate bath must be equipped with a siphon so that
condensate is completely removed from the ventilation unit and unpleasant odours
from sewerage have no access to the ventilation system.
For ventilation units operated outdoors, the siphon and condensate drainage pipes
must be heated with an electric heating cable (when the ambient air temperature
tamb <0°C). The siphon and the condensate drain pipes must be insulated with
insulation.
Do not switch on an ungrounded air handling unit!
Before switching on the unit, all doors must be closed and locked, protective caps
must be on.
Before turning on the unit, it’s sections should be rmly connected to each other.
Ventilation device is pressurised, and is therefore prohibited to open the door wi-
thout turning off the machine.
Before performing any inspection work inside the unit, make sure that the unit is
disconnected from the mains, and there are no rotating parts.
Before opening the door, turn off the unit and the circuit breaker, and wait
(for 1–2 min.) until the fan stops rotating.
Before switching on the ventilation unit, be sure to activate all security functions.
The ventilation unit can be turned on and off only according to the procedure
described in the management automation.
Be careful during water heater installation and repairs – the coolant temperature
can reach 130°C!
Protection areas of moving parts
Moving parts in installations include the impeller fan, the belt drive of the rotary
heat exchanger (if any), and the closing and bypass valves of the plate heat ex-
changer (if any).
The lockable inspection door protects against direct contact with moving parts.
If the fan section outlets on not connected to the ducts, the connections must be
covered with a safety net.
If the ventilation unit has no factory automation control, the company installing the
unit is responsible for its operation and reliability of guards.

19
UAB KOMFOVENT we reserve the right to make changes without prior notice
KBP2-18-10
Air damper Fan
Air lter Air cooler
Rotary heat exchanger Compressor
Plate heat exchanger Noise attenuator
Water air heater
Electrical air heater
Inspection
3.1. VERSO Air Handling Units marking
Unit sections are marked with the following signs:
Note!
Important information in
the instruction manual.
Caution!
Rotating parts!
Place for siphon.
Note!
Before performing any in-
spection work inside the
unit, be sure the unit‘s
electric power supply is
disconnected.

20
UAB KOMFOVENT we reserve the right to make changes without prior notice
KBP2-18-10
3.2. Unit transportation
On arrival of the ventilation unit, carefully inspect
the packaging for any damage. If any mechanical
or other defects are visible (e.g. wet cardboard
packaging), immediately notify the carrier. If damage
is signicant, do not accept the goods. Notify the Seller
or KOMFOVENT UAB representative1about any
transportation damage within three working days.
Devices must be stored in clean and dry premises,
at 0−40°C temperature. Stored unit must be protected
against any accidental damage as well as dust and dirt
entering the unit. Other heavy items shall not be load-
ed on top of the stored device.
1 KOMFOVENT UAB shall not be held liable for any damages cau-
sed by the carrier during transportation or unloading.
Transported units must be properly xed and addi-
tionally protected from possible mechanical damage,
rain or snow. Units shall be loaded and unloaded using
a forklift or a crane. When lifting with a crane, special
straps or ropes, xed in designated areas, must be
used. It must be ensured that the casing is not crushed
or otherwise damaged by straps or ropes during lifting
operations. Use of special supporting structures (trav-
erses) is recommended. Individual sections of the unit
shall be lifted together with an installation frame or a
wooden pallet.