Komfovent DOMEKT series Manual

DOMEKT
EN Installation and service Manual

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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 collection 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 e󰀨ective usage of natural resources. For
more information about where you can drop o󰀨 your waste equipment for recycling, please contact your local city
o󰀩ce, waste authority, approved WEEE scheme or your household waste disposal service.
Content
1. SAFETY REQUIREMENTS ............................................................................................................................ 4
2. TRANSPORTATION........................................................................................................................................ 4
3. BRIEF DESCRIPTION OF THE UNIT ........................................................................................................... 5
4. INSTALLATION ............................................................................................................................................. 12
4.1. Condensate Drain Connections ............................................................................................................... 16
4.1.1. Water trap installation for a unit section mounted on the suction side........................................... 17
4.1.2. Water trap installation for a unit section mounted on the pressure side ........................................ 17
4.2. Heating coil connection............................................................................................................................ 24
4.3. Ductwork .................................................................................................................................................. 25
4.4. Final Inspection........................................................................................................................................ 25
5. MAINTENANCE............................................................................................................................................. 25
6. TECHNICAL INFORMATION ....................................................................................................................... 26

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1. SAFETY REQUIREMENTS
• To avoid accidents and/or unit damage, only a trained technician must
carry out the connection.
• The appropriate Personal Protective Equipment (PPE) attire is worn
relative to the operation being carried out.
• Electrical equipment is rated, connected and earthed in accordance
with CE regulations.
The air handling unit must be plugged in to an electrical outlet (with earth), which is in good order and cor-
responds with all requirements of electric safety. Before starting any operations inside the unit, make sure that
the unit is switched o󰀨, and the power cable is unplugged.
• Earth must be installed according EN61557, BS 7671.
• The unit should be installed according to Installation and Maintenance
Manual.
• Before starting the unit, check correct position of air lters.
• Service maintenance should be carried out only in conformity with the
instructions specied herein below.
• If main cable is damaged, only manufacturer, service team or trained
technician must change it in order to avoid accidents.
• Drilling and using self-tapping screws on the unit casing is prohibited
(where it is not provided by the construction), since cables or tubes
inside of the casing may be damaged.
2. TRANSPORTATION
The air handling units are ready for transit and storage (1 Picture). The unit is packed to prevent damage
of the external and internal parts of the unit, dust and moisture penetration.
Corners of the air handling units are protected against the damage – protective corners are used. The
entire unit is wrapped up in protective lm. For transit or storage, units are mounted on timber pallets. The unit
is fastened to the pallet with polypropylene packing tape over protective corners.
Vertical and horizontal units ready for transit and storage
1 Picture

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When unit is loaded or unloaded by crane, cargo rope is fastened in its designated places.
Forklift truck or hand pallet truck can transport air handling unit as it is shown (2 a, b, c Pictures).
Vertical and horizontal unit transportation by forklift truck, hand pallet truck or crane
2 a Picture
2 c Picture
2 b Picture
2 a Unit is transported by forklift truck on a wooden pallet;
2 b Unit is transported by hand pallet truck on a wooden pallet;
2 c Unit is lifted by crane on a wooden pallet.
The unit should be examined upon receipt, to ensure that no visible damage has occurred during transit,
and the advice note checked to ensure that all items have been received. If damage or delivery shortages are
disco vered, the carrier should be immediately informed. KOMFOVENT should be notied within three days of
receipt, with a written conrmation sent within seven days. KOMFOVENT can accept no responsibility for dam-
age by unloading from carrier or for subsequent damage on site.
If the unit is not to be installed immediately, it should be stored in a clean, dry area. If stored externally, it
should be adequately protected from the weather.
3. BRIEF DESCRIPTION OF THE UNIT
• The air handling units are intended for ventilation of small and medium-sized spaces (eg. single family
houses, o󰀩ces, etc.), having operating ambient temperature and relative humidity. The unit is intended to
be installed in the domestic or non residential premises. Mineral wool is used for thermal insulation and
sound attenuation. Units cover panels are 25–50 mm thick. As standard, the unit is designed for indoor
placement. In cold, wet rooms possible icing or condensation on the housing inside and outside. The
operating temperature range for the unit is -30 °C ... +40 °C, outdoor air temperature. Extracted indoor air
temperature +10 – +40 °C, relative humidity (non-condensing) 20–80 %.
• The air handling unit is not to be used to transport solid particles, even not in areas where there is a risk
of explosive gases.
• Inside of the air handling unit it is integrated heat-exchanger and heater (or cooler), which compensates
losses of the heat/cold during ventilation of the premises, thus AHU is not recommended to be used as
main heating/cooling source of the building. AHU may not reach the supply temperature setpoint if the
actual room temperature di󰀨ers a lot from the desired value, since in that case heat exchanger capacity
will be low.
• Before you open the door, the unit must be switched o󰀨 and the fans must have been given time to stop
(up to 3 minutes).
• The unit contains heating elements that must not be touched when they are hot.
• We recommend to leave air handling unit in working mode (minimum 20 percent of power) during the rst
operation year. Due to moisture in building constructions, condensation may occur inside and outside the
air handling unit. Continuous operation of the equipment will signicantly reduce the risk of condensation.

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• Under conditions, when the outdoor air temperature is low and humidity is high, risk of heat exchanger
frosting may appear. For this reason anti-frost protection function is foreseen in the controller of the Kom-
fovent air handling units. Depending on the type of the air handling unit, di󰀨erent methods of anti-frost
protection are available: cold air by-passing, supply air fan speed reducing and/or integrated preheater.
Counter cross ow heat exchanger is the mostly sensitive for low outside air temperatures, as the risk of
frosting appears in the temperature range from 0 to -5 °C and below. Standard aluminium cross-ow plate
heat exchanger has better features, as the risk of freezing appears only at -10 °C. The lowest risk and the
highest resistance to cold outside air is a competitive feature of the rotary heat exchanger, as it is not freez-
ing even at the temperatures of -30 °C if the humidity level of the air is appropriate.
In the units with counter ow or cross ow plate exchangers without inte-
grated preheater, it is necessary to install additional duct mounted pre-
heater in the outside air intake duct, which will ensure temperature of the
intake air higher than -4 °C.
• Selecting the management without pre-heater, but with cold air bypass the unit must be additionally
equipped with a secondary duct mounted heater.
If the unit is mounted in premises with high humidity, condensation might occur on the surface of the unit
when outdoor temperatures are low (see picture 3). When installing unit in such a premises, it is necessary
to take additional measures, to avoid condensate damage to the building construction elements or furniture.
Relative humidity of the premises where the unit is mounted, %
80
75
70
65
60
55
50
45
40
35
30
25
20
12 14 16 18 20 22 24 26 28 30 32
Air temperature of the premises where the unit is mounted, °C
Outdoor air temperature, °C
10
5
0
-5
-10
-15
-20
-25
3 picture. Condensation on unit surface diagram

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From the diagram in picture 3, it can be checked under what conditions condensate might appear on the
unit external surfaces.
Relative humidity of the premises where the unit is mounted, %
80
75
70
65
60
55
50
45
40
35
30
25
20
15
12 14 16 18 20 22 24 26 28 30 32
Air temperature of the premises where the unit is mounted, °C
Outdoor air temperature, °C
10
5
0
-5
-10
-15
-20
-25
123
To minimize possibility of condensation on unit outer surfaces use following recommendations:
1) Maintain lower relative humidity in the room where air handling unit is mounted;
2) Preheater should be installed to increase the supply air temperature.
It is recommended to keep air handling unit constantly running and in
cases when ventilation is not necessary, switch it to the minimum inten-
sity (20%). In that way, good indoor climate will be maintained and con-
densation inside of the unit will decrease, avoiding humidity damage to
electronic components.
Example No. 1
Temperature of the premises 20°C
Relative humidity of the premises
47%
Condensate will occur when outdoor
temperature is lower than +3°C
Example No. 2
Temperature of the premises 22°C
Outdoor temperature -5°C
Condensate will occur when relative
humidity of the premises will be
higher than 37%
Example No. 3
Relative humidity of the premises
40%
Outdoor temperature 0°C
Condensate will occur when
temperature of the premises will be
higher than 24,5°C

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Air Handling Units Schemes
6
3
4
5
712
DOMEKT R 400 V / DOMEKT R 450 V
5
2
7
4
3
6
1
BA C E D
E
DOMEKT R 190V / 200V
6
3
1
5
4
C
BA E D
DOMEKT R 300 V
D
A
C
B
341 5
6
DOMEKT R 400 H
E
D
A
C
B
3
4
156 2
DOMEKT R 250 F C6
C
B
A
D
E
6 3 1 5 4 2
DOMEKT R 400 F

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E
D
A
C
B
6 3 1 54 2
DOMEKT R 700 H
D
A
E
C
B
63 1 45 2
DOMEKT R 600 H
B
E
ADC
2
5
4
3
6
1
DOMEKT R 500 V** / DOMEKT R 700 V**
C
BD
A
2 6 13 54
DOMEKT R 700 F

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ADCB
3
6
2
1
DOMEKT CF 400 V
CD
43
1
5
68
BEA
2
7
BCEDA
DOMEKT PP 300 V / 450 V
6 3 1 7 5
4
8
DABC
DOMEKT CF 250 V
D
A
B
C
1263 5
4
2
DOMEKT CF 250 F

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A
D
C
B
1
263 5 24
DOMEKT CF 500 F
B
C
D
A
1
263 5 24
DOMEKT CF 700 F
A
D
C
B
1
263 5 24
DOMEKT CF 700 H
H
H
DACB
62 3 4 5 2
DOMEKT CF 700 V
3 5 2
AB
DOMEKT S 650 F / 800 F / 1000 F
A. Outdoor intake
B. Supply air
C. Extract indoor
D. Exhaust air
EE. Kitchen hood connection
(by-pass – extraction without heat recovery)
1. Rotary or plate heat exchanger
2. Electric or water air heater
3. Supply air lter
4. Exhaust air lter
5. Supply fan
6. Exhaust fan
7. Air by-pass damper
8. Condensate drain (the water trap must be installed)

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4. INSTALL ATION
It is recommended to install the air handling unit in a separate room or in the attic on a hard smooth sur-
face insulated with a rubber mat. The minimum free space in front of the control panel should be not less than
700 mm. The free space over the top of the unit should be at least 300 mm (4 a, b Picture). Rubber vibration
absorbers must be used when unit is going to be mounted on the wall or ceiling.
The place for the unit must be selected with allowance for minimum access to the unit for maintenance or
service and must comply with safety requirements. Opening for inspection can not be smaller than dimensions
of the unit and unit itself must be mounted in a way, that if needed (for example in case of complicated repair)
it can be easily dismounted.
Minimum Maintenance Space for Horizontal
Units
100 mm
min. 700 mm
4 a Picture
Minimum Maintenance Space for Vertical
Units
100 mm
min. 700 mm
4 b Picture
Unit Installation Scheme
23 12
4 5
2
1
3
4
1. Air handling unit
2. Air duct connections
3. Sound attenuator
4. Drain siphon (if provided)
5. Rubber vibration absorber (not included in unit set)
4 Picture

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B
ceiling
A
min. 100 mm
5
B
1
Inspec-
tion trapdoor
223
5 a Picture*
2 21 3
5
A
A
D
C
B
B
5 b Picture**
* Only F type units
** Only R 250F, R 400 F and 700 F units

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DOMEKT R 400 V Unit brackets’ positions
B
A
641
604
57
662
30
300
600
30
Ø125 Ø160
6 Picture
DOMEKT R 450 V Unit brackets’ positions
Ø125 Ø160
A
57
667
704
B
30
340
30
680
7 Picture

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DOMEKT CF 250 V Unit brackets’ positions
view 1
35 260
520
590
595
20
B
A
510
700
824 795
8 Picture
DOMEKT CF 250F – CF 500F – CF 700F Units brackets’ positions
15
9 Picture
DOMEKT CF 400 V Unit brackets’ positions
520
750 838 867
598 600
260 39
10 Picture

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4.1. Condensate Drain Connections
All condensate drain connections must be correctly trapped. Incorrect trapping can result in ooding within
the unit and consequent ooding of the immediate area. Fill the drain trap with water before starting up the unit.
All drain lines should be insulated where passing through any space where damage from condensation
drip might occur. If the unit is installed in unheated premises the condensate pipe should be heat-insulated and
heated with heating cable.
A condensate pipe and a drain trap
Drain scheme of Vertical Unit
view 1
D = 15
12 a Picture
Drain scheme of Horizontal Unit
view 2
D = 15
view 2
12 b Picture
The bend of the water trap can be repositioned by turning it to the right or the left. The drain line from the
water trap must be arranged so that it will not damage adjacent unit sections or building elements. If the drain
line is run through cold spaces, it should be insulated to prevent freezing. A heating cable may be required.
Pictures 11 a and 11 b show unit’s upper and bottom xing element.
2
3
4
5
6
9
1
8
2
7
1
11 a Picture 11 b Picture
1. Screw
2. Wall plug
3. Hanging bracket 1
4. Hanging bracket 2
5. Bolt M5
6. Gasket
7. Self tapping screw
8. L-shape bracket
9. Washer M5 DIN9021

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4.1.1. Water trap installation for a unit section mounted on the suction side
Since the fans in most air handling units are last in the chain of functions and generate sub-atmospheric
pressure inside the unit,it is very important to correctly install the water trap. Because of that reason conden-
sate can be hardly eliminated from the air handling unit and the technical premise may get covered with con-
densate. Height H1must be at least equivalent in mm to half of the negative pressure inside the unit in mm water
gauge. Height H2must be at least equivalent in mm to the negative pressure inside the unit in mm water gauge.
Ø 32
25-240106
DN 40
95
H1, H2
140-310
Condensate Condensate
H2
H1
Precaution: The drainage siphon should be mounted on the outlet t-
ting pipe of every drip tray for complete condensate drainage from the air
handling unit and prevention of penetration of o󰀨ensive odours from an
e󰀪uent into the ventilation system.
In case of the outdoor operation of the air handling unit, the siphon and
the bleeders should be heated with an electric thermal cable (if ambient
air temperature tamb < 0 °C). The siphon and the bleeders should be heat-
insulated with an insulating material.
4.1.2. Water trap installation for a unit section mounted on the pressure side
Since the fans in most air handling units are not last in the chain of functions and generate over-atmos-
pheric pressure inside the cooling section. In such case the consisted condensate can be easily removed
from AHU and there will be no strict requirements for siphon‘s installation. A drainage siphon is enough with
a minimum rake.
RECOMMENDATION: The drainage siphon must be installed in connection with not less size pipe diam-
eter.
Any drainage systems must not be connected directly to the municipal sewage system. The condensate
tray shall be easily accessible for cleaning and disinfection.

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DOMEKT R 190V / 200V unit inspection side change
1
2
3
4
5
8 9 8
5
6
7
SUP
SUP
SUP – Supply air duct connection.
DOMEKT R 190V / 200V Unit hanging scheme without kitchen hood
1
2
3
4
5
8 9 8
5
6
7
SUP
SUP
1. Air handling unit DOMEKT R 190V / 200V
2. Wall plug 8×50 + screw 4,5×50
3. Wall mounting bracket
4. Self tapping screw 4,2×13
5. Unit bracket
6. Bottom bracket
7. Screw M4x16 (DIN 7895)
8. Bracket for decorative panel
9. Screw 2.5×16 with cone head

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DOMEKT R 190V / 200V unit with kitchen hood
Air handling unit DOMEKT R 190V / 200V can be mounted with one of the two types of kitchen hoods (13,
14 Picture).
1. Air handling unit DOMEKT R 190V / 200V
2. Kitchen hood adapter 392-12
3. Kitchen hood 392-12
4. Standard kitchen hood
5. Wall plug 8×50 + screw 4,5×50
6. Wall mounting bracket
7. Unit bracket
8. Self tapping screw 4,2×13
9. Bracket for decorative panel
10. Screw 2.5×16 with cone head
Dimensions for mounting furniture panel
22
625
600
500
250
22
32.5
500
250
32.5
Ø 2(depth – 5 mm) 16 holes
13 Picture
1
9
2
3
4
A
B
B
A
A
B
5
6
7
8
9
10

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14a Picture
5 (×10)
Instalation scheme of DOMEKT R 190V / 200V unit with kitchen hood
Before installing kitchen hood, bottom cover plate must be removed by remooving xing screws (14a pic.)
14b Picture. Installation of standard kitchen hood 14c Picture. Installation of kitchen hood 392-12
1. Kitchen hood adapter 392-12
2. Standard kitchen hood
3. Kitchen hood 392-12
4. Screws M4 for hood xation (4 picture)
5. Self tapping screws 4,2×13 for adapter xation
(10 picture)
5 (×10)
4 (×4)
4 (×4)
3
2
1