Komfovent Domekt S User manual

INSTALLATION
AND USER
MANUAL
EN
Domekt S
Verso Standard S
Air supply air handling units

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UAB KOMFOVENT we reserve the right to make changes without prior notice
Domekt S_Verso Standard S_manual_23-04
CONTENT
INSTALLATION MANUAL
1. INTRODUCTION ...........................................................................................................................................................................................................5
1.1. Safety Requirements...........................................................................................................................................................................................5
1.2. Unit components..................................................................................................................................................................................................6
2. UNIT TRANSPORTATION AND STORAGE.........................................................................................................................................................6
3. MECHANICAL INSTALLATION...............................................................................................................................................................................8
3.1. Requirements for Mounting Location...........................................................................................................................................................8
3.2. Inspection Area .................................................................................................................................................................................................10
3.3. Duct system installation..................................................................................................................................................................................10
3.4. Installation of External Heating/Cooling Devices..................................................................................................................................12
3.5. Connection of a Condensate Drain.............................................................................................................................................................13
4. TECHNICAL INFORMATION.................................................................................................................................................................................14
5. UNIT DIMENSIONS ..................................................................................................................................................................................................14
6. ELECTRICAL INSTALLATION ............................................................................................................................................................................... 14
6.1. Requirements for Electrical Connection ..................................................................................................................................................15
6.2. Connection of Electrical Components.......................................................................................................................................................15
6.3. Control Panel Installation ..............................................................................................................................................................................19
6.4. Connecting the Unit to the Internal Computer Network or the Internet .....................................................................................20
7. FILTERS ..........................................................................................................................................................................................................................22
USER MANUAL
8. BEFORE TURNING ON THE UNIT.......................................................................................................................................................................23
8.1. Quick Inspection................................................................................................................................................................................................23
9. AIR HANDLING UNIT FUNCTIONS ...................................................................................................................................................................24
9.1. Ventilation modes .............................................................................................................................................................................................24
9.2. Air ow control...................................................................................................................................................................................................24
9.3. Temperature control......................................................................................................................................................................................... 25
9.4. Air Quality Control (AQC)................................................................................................................................................................................ 25
9.5. Outdoor compensated ventilation (OCV) ................................................................................................................................................25
9.6. Minimum temperature control function (MTC)......................................................................................................................................26
9.7. Operation on demand (OOD) .......................................................................................................................................................................26
9.8. Override (OVR)....................................................................................................................................................................................................26
9.9. Summer night cooling function (SNC) ......................................................................................................................................................26
9.10. Protective functions.......................................................................................................................................................................................27
10. OPTIONAL FUNCTIONS......................................................................................................................................................................................28
10.1. Humidity control function (HUM).............................................................................................................................................................28
10.2. Additional zone control (ZN) ......................................................................................................................................................................28
10.3. Combined water heater/cooler .................................................................................................................................................................28
10.4. Control of direct evaporation (DX) devices ...........................................................................................................................................28
10.5. Water ow monitoring function................................................................................................................................................................29
10.6. External pressure manometers for monitoring lter contamination........................................................................................... 29
11. CONTROL AND SETTINGS. CONTROL PANEL C5.1 ...............................................................................................................................29
11.1. Parameter overview.......................................................................................................................................................................................31
11.2. Turning on and selection of ventilation modes...................................................................................................................................32
11.3. Setting parameters of ventilation modes ..............................................................................................................................................33

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Domekt S_Verso Standard S_manual_23-044
11.4. Scheduling window and ventilation schedule settings....................................................................................................................34
11.5. Overview window...........................................................................................................................................................................................35
11.6. Functions............................................................................................................................................................................................................36
11.7. Settings...............................................................................................................................................................................................................39
11.7.1. Air handling unit..................................................................................................................................................................................39
11.7.2. Customization ......................................................................................................................................................................................41
12. CONTROL AND SETTINGS. COMPUTER......................................................................................................................................................43
12.1. Modes.................................................................................................................................................................................................................. 43
12.1.1. Operation modes ................................................................................................................................................................................44
12.1.2. Flow control modes............................................................................................................................................................................ 44
12.1.3. Temperature control modes............................................................................................................................................................45
12.2. Functions............................................................................................................................................................................................................45
12.2.1. Air quality control (AQC)...................................................................................................................................................................45
12.2.2. Outdoor compensated ventilation (OCV) ..................................................................................................................................45
12.2.3. Minimum temperature control (MTC) .........................................................................................................................................46
12.2.4. Override function (OVR).................................................................................................................................................................... 46
12.2.5. Operation on demand (OOD) .........................................................................................................................................................46
12.2.6. Humidity control (HUM) ...................................................................................................................................................................47
12.2.7. Additional zone control (ZN)...........................................................................................................................................................47
12.2.8. Summer night cooling (SNC) ..........................................................................................................................................................48
12.2.9. Water heater/cooler............................................................................................................................................................................48
12.3. Alarms/Status ...................................................................................................................................................................................................48
12.3.1. Actual alarms ........................................................................................................................................................................................48
12.3.2. Alarm history......................................................................................................................................................................................... 49
12.3.3. Operation counters.............................................................................................................................................................................49
12.3.4. VAV status...............................................................................................................................................................................................49
12.3.5. Controller status .................................................................................................................................................................................49
12.4. Scheduling.........................................................................................................................................................................................................50
12.4.1. Operation program.............................................................................................................................................................................50
12.4.2. Holidays ..................................................................................................................................................................................................50
12.5. Settings...............................................................................................................................................................................................................51
12.5.1. Date/time ...............................................................................................................................................................................................51
12.5.2. Connectivity..........................................................................................................................................................................................51
12.5.3. User interface........................................................................................................................................................................................52
12.5.4. Log-in password ..................................................................................................................................................................................52
12.5.5. Restoring factory settings................................................................................................................................................................52
13. CONTROL VIA A SMARTPHONE......................................................................................................................................................................53
14. PERIODIC MAINTENANCE ................................................................................................................................................................................55
14.1. Housing ..............................................................................................................................................................................................................56
14.2. Filters ...................................................................................................................................................................................................................56
14.3. Fans ......................................................................................................................................................................................................................57
14.4. Water heater/cooler .......................................................................................................................................................................................57
14.5. Direct evaporation cooler/heater (DX)....................................................................................................................................................57
14.6. Electrical heater...............................................................................................................................................................................................57
15. TROUBLESHOOTING............................................................................................................................................................................................58
ANNEX 1. Filter inspection and replacement .......................................................................................................................................................61

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Domekt S_Verso Standard S_manual_23-04
INSTALLATION MANUAL
1. INTRODUCTION
This Installation Manual is intended for professionals, qualied to install Domekt S and Verso Standard S air handling
units. Qualied professionals are people with sucient professional experience and knowledge of ventilation systems and
installation thereof, knowledge of electrical safety requirements and having ability to perform works without endangering
themselves or others.
See the KOMFOVENT website for user manuals.
1.1. Safety Requirements
To avoid misunderstandings, read this Instruction Manual carefully before installing air-handling unit.
Only a qualied professional in accordance with the manufacturer’s instructions and applicable legal acts and safety re-
quirements may install air-handling units. An air handling unit is an electrical-mechanical device that contains electrical and
moving parts, therefore, disregarding instructions of this manual will void the manufacturer’s warranty and may also cause
direct damage to property or human health.
• Before starting any tasks, make sure that the unit is unplugged from the mains.
• Use caution when performing works near internal or external heaters as their surfaces may be hot.
• Do not connect the unit to the mains unless all the external assemblies are installed completely.
• Do not connect the unit to the mains in case of any visible damage incurred during transportation.
• Do not leave foreign objects and tools inside the unit.
• It is forbidden to operate air-handling units in areas with potentially explosive atmospheres.
• Use appropriate safety equipment (gloves, goggles) when performing installation or repair works.
This symbol indicates that this product may not be disposed of with your household waste as specied in WEEE Di-
rective (2002/96/EC) and national laws. 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 negative impact on the environment and human health due to potentially hazardous substances
that are generally associated with electrical and electronic equipment. 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 further recycling, contact your city authorities, waste management organisa-
tions, approved WEEE scheme or your household waste disposal service.
An air-handling unit is a device designed to ensure good ventilation in the premises. Air handling unit supplies ltered
fresh air from outside. Domekt S and Verso Standard S – air handling units without heat exchangers, intended solely for air
supply to the premises. Fresh outdoor air is heated/cooled to desired temperature with heating/cooling devices installed in
the unit or air ducts.
INDOORS
OUTDOORS
Filter Fan Heaters

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Domekt S_Verso Standard S_manual_23-046
1.2. Unit components
Below are the principal diagrams of air handling units, including the marking of assemblies of the unit and the arrange-
ment of the duct connections.
VERSO S 1300 F - 2100 F
VERSO S 3000 F
DOMEKT S 650 F / 800 F / 1000 F
C5
C5
ODA SUP
SUP
ODA
3 4 5
1
2
34 5
1
2
ODA
SUP
C5
31 4
5
2
ODA
SUP
– outdoor intake air
– air supplied to the
premise
* Depending on the order.
1 – supply air fan
2 – outdoor air lter
3 – C5 controller main board
4 – Lead-in wire
5* – electric heater / water heater
2. UNIT TRANSPORTATION AND STORAGE
Equipment must be transported and stored in the original packaging. During transportation, equipment must be prop-
erly secured and further protected against possible mechanical damage, rain or snow.
Fig. 1. Examples of equipment packaging
Forklift truck or crane can be used for loading or unloading. For the crane operation, special lashes or ropes must be
used to securing them in the designated areas. Ensure that lifting lashes or ropes do not crush or otherwise damage the
housing of the unit. We recommend using special belt supports. When lifting and transporting the equipment with a forklift,
the forks must be long enough to prevent the unit from being overturned or mechanically damaging its bottom side. Air
handling units are heavy, therefore, be careful during lifting, moving or transportation. Use personal protective equipment.
Even small units should be transported on a forklift, a trolley or carried by multiple persons.

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Domekt S_Verso Standard S_manual_23-04
L
≥L
Fig. 2. Examples of transportation by crane, forklift and trolley
After delivery of the air handling unit, carefully inspect its packaging for damage. If mechanical or other damage is visible
(e.g., wet cardboard packaging), notify the carrier immediately. If the damage is signicant, do not accept the unit. Inform the
selling company or the representative of UAB KOMFOVENT within three business days about any damage detected during
delivery.1
Units should be stored in a clean, dry room at a temperature of 0–40°C. When selecting a storage location, make sure the
unit is not accidentally damaged, that other heavy objects are not loaded on top and dust or moisture does not get inside
the unit.
• Air handling units are heavy, therefore care must be taken during lifting, carrying or moving opera-
tions. Use personal protection equipment, do not stand under a suspended unit or a part thereof.
• Only an employee qualied to operate a forklift truck or crane and familiar with the principles of
cargo lifting and safety requirements, must perform unloading or lifting operations.
• It must be ensured that the casing is not crushed or otherwise damaged by straps or ropes during lift-
ing operations. Use of special supporting structures (traverses) is recommended.
• When lifting the unit or section thereof, note that their center of gravity may dier from the geomet-
ric center of the load.
• Mounting of separate air handling units in stacks is not allowed unless it’s construction design is in-
tended for such installation.
• Before installation AHU must be stored in clean and dry premises in their original packaging. If the
unit is installed but not yet in use, all connection openings must be tightly closed and the unit must
be additionally protected against environmental inuences (dust, rain, cold, etc.).
1 UAB KOMFOVENT is not responsible for losses caused by the carrier during transportation and unloading.

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Domekt S_Verso Standard S_manual_23-048
3. MECHANICAL INSTALLATION
3.1. Requirements for Mounting Location
Domekt S and Verso Standard S air handling units are designed for ventilation of premises where a standard air tem-
perature and humidity must be maintained. These air handling units are not intended for air ows containing solid particles.
Standard equipment air handling units are intended for indoor installation. Air handling units are designed for ambient
temperatures from -30 °C to +40 °C.
• Domekt S and Verso Standard S units are not intended for operation in areas with potentially explo-
sive atmospheres. Air handling units are not designed for ventilation and dehumidication of wet
areas (pools, saunas, car washes, etc.).
• If the AHU is installed in a room with high humidity level, condensate may form on the walls of the
unit at low outdoor temperatures.
Domekt S and Verso Standard S units are usually attached to the ceiling, oor slab or other horizontal structures with the
doors down. For this purpose, their housing has special brackets with integrated vibration absorbers. The brackets should
be screwed to the supporting structure of the oor slab with threaded rods or anchor bolts.
Some Domekt S and Verso Standard S units can be wall mounted or placed on the oor.
Unit Heater type
Domekt S 650 F HE + - - -
Domekt S 800 F HE + - - -
HW + + + +
Domekt S 1000 F HE + - - -
HW + + + +
Verso S 1300 F HE + - - -
HW + + + +
Verso S 2100 F HE + - - -
HW + + + +
Verso S 3000 F HW + - + -
Fig. 3. Mounting positions of units

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Domekt S_Verso Standard S_manual_23-04
Below are the types of mounting brackets of units and their arrangement dimensions.
A
B
1
1– vibration absorbers
Unit A, mm B, mm
Domekt S 650 F 803 526
Domekt S 800 F 903 526
Domekt S 1000 F 823 751
Verso S 1300 F 823 751
B1
L1 L2
H1
11
S1
S2
E-E
Ø 10,5
B
A
A1
E
E
1
Unit
B A A1 S1 S2 H1 B1 L1 L2
mm
Verso S 2100 F 1034 71,5 750 17 30 16 12 36 50
Verso S 3000 F 1049 75 1010 17 30 16 12 36 50

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Domekt S_Verso Standard S_manual_23-0410
3.2. Inspection Area
When selecting an installation location, you must foresee sucient and security compliant access space for repair and
maintenance operations. The unit must be installed in a way to allow partial or full disassembly and removal of assemblies
out of the sections, if needed (e.g., in case of complex repairs).
Do not hang such units above the stairs or high above, where it will not be possible to reach it without using special
equipment. If the unit is hidden behind the suspended ceiling the inspection opening (if any) should not be smaller than
the size of the unit, or the ceiling must be installed in such a way that it can be easily dismantled without damaging their
structures. Most of the Domekt S and Verso Standard S units have seals on the side for routing cables of external compo-
nents and sensors into the automation box. All external devices and sensors are connected inside of the automation box,
thus leave a space of at least 300 mm between it and the wall of the building. This will allow easier access to the electronics
during installation or repair.
• It is necessary to install additional service areas for units installed high above, which would allow to
work safely during technical maintenance (e.g., during lter replacement) or repair.
• When choosing a place to place or hang the unit, keep in mind that preventive maintenance should
be performed at least twice a year, and sometimes more often; therefore, the user or the person re-
sponsible for the maintenance of the unit must reach it as safe and simple as possible.
3.3. Duct system installation
The air in and out of the unit ows through the duct system. The duct system should be designed and selected to have
low airow rates and low pressure dierentials, ensuring more accurate airow rates, lower energy consumption, lower
noise levels and longer life of the unit.
Outdoor vents must be installed as far apart as possible on dierent sides of the building to prevent the exhaust air from
returning to the air intakes. Try to install the air intake vents where the outdoor air is the cleanest: do not direct them towards
the street, car park or outdoor replace. We also recommend installing the air intake vent on the north or east side of the
building, where the heat of the sun in summer will not have a signicant eect on the supply air temperature.
It is highly recommended to install unit connecting ducts of supply inlet and exhaust outlet with a minimum slope on the
outside of the premise, to avoid water owing into the unit in case of rain or snow.
S
EN
W
min. 1,8 m
min. 1 m
Air exhaust vent
Air intake vent
min. 1,8 m
min. 3 m
min. 3 m

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Domekt S_Verso Standard S_manual_23-04
It is recommended to insulate the ducts in unheated rooms (attic, basement) to avoid heat loss. It is also recommended
to insulate the supply air ducts if the unit is used for room cooling.
Circular air ducts are tted to the unit with self tapping screws. Rectangular ducts are tted using ange connections.
Dierent air ow duct positions are marked on the sticker located on the AHU:
outdoor intake air
air supplied to the premises
VERSO S 2100 F
ODA
SUP
ODA
SUP
• Ducts connecting the unit to the exterior of the building must be insulated (insulation thickness 50–
100 mm) to prevent condensation on cold surfaces.
• Air intake ducts must be tted with air closing dampers (mechanical spring-loaded or electric with
actuators) to protect the unit from exposure to climatic conditions when the unit is switched o.
• In order to minimise AHU noise transferring through the ducts into ventilated areas, sound attenua-
tors must be connected to the unit.
• Duct system elements must have separate brackets and to be mounted in a way that their weight is
not shifted to the unit casing.
The diameter of the ducts varies by unit model:
Unit
Duct diameter, mm
Duct type Duct ODA Duct SUP
Domekt S
650 F Round 160 160
800 F Round 200 200
1000 F Round 250 250
Verso S
1300 F Round 250 250
2100 F Rectangular 700 × 200 700 × 200
3000 F Rectangular 600 × 400 600 × 400

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Domekt S_Verso Standard S_manual_23-0412
3.4. Installation of External Heating/Cooling Devices
Pipes of water heater and cooler are connected to a water mixing unit (PPU) that supplies hot/cold water from the build-
ing’s water system. Heat exchangers for direct evaporation (DX) coolers/heaters are factory-lled with nitrogen gas. Before
connecting a heat exchanger to a refrigerant system, nitrogen gas is discharged through a valve which is then cut o and
heat exchanger connections are soldered to a pipeline. Coils for water or DX coolers are tted with condensate trays to which
a siphon and drainage piping must be connected (see Chapter “Connection of a Condensate Drain”).
All connections to the heating or cooling system piping and mains must be performed by a qualied
specialist.
Fig. 4. Connection of sleeves
When connecting sleeves of water heaters/coolers, use two pipe wrenches to secure sleeves, otherwise they will be dam-
aged. If water is used in the heater, for frost protection water temperature sensor (B5), must be installed and xed with strap
on the return water pipe as close to the heater as possible. Fix the sensor in a way that its metal part has good contact with
a surface of the pipe. The sensor must be thermally insulated so that the room temperature does not distort water tempera-
ture measurements.
Fig. 5. Installation of a return water temperature sensor
• When operating air handling unit in temperatures lower than 0°C, it is necessary to use water-glycol
mixture as a heating medium or to maintain a return water temperature of at least 25°C.
• Pipework package1must include circulation pump, which circulates heating/cooling medium through
the coil (smaller circuit) and 3-way mixing valve with modulated actuator. In cases if 2-way valve is
used, additionally it must be installed non-return valves to ensure continuous circulation around
smaller circuit. PPU must be installed as close to the water coil as possible.
• In order to additionally protect the water heater from freezing, you may also use a capillary thermo-
stat (see section “Electrical installation”) that should be mounted on the surface of the heater.
1 It is recommended to use PPU made by Komfovent.

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Domekt S_Verso Standard S_manual_23-04
3.5. Connection of a Condensate Drain
Operation of units with cooling heat exchangers causes condensation that accumulates in condensate trays. Condensate
is removed from condensate trays via drainage pipes, therefore a condensate drainage system must be connected. Drainage
piping must be mounted with a slope, without narrowing sections or loops preventing water from draining. If such drainage
piping is installed outdoors or in unheated premises, it must be adequately insulated or equipped with a heating cable to
prevent water from freezing during winter. Drainage piping is connected to the unit with a siphon. Due to positive or ne-
gative air pressure in the air handling unit, water cannot drain out of the condensate collection tray by itself. Therefore, it is
necessary to connect a proper height siphon or a siphon with a one-way valve to the drain pipe.
p < 0 p > 0H mm
H mm
H/2 mm
Ø15 mm
Ø15 mm
Fig. 6. Installation of a siphon
Height Hof a siphon without a one-way valve is selected according to static pressure pinside the air handling unit:
H [mm] = 25 + p [mm H2O] = 25 + 0.1 x p [Pa]
The height of a siphon with a non-return valve may be lower; however, it depends on the technical data of the siphon
used; therefore, if possible, we recommend choosing its height in the same way as for a siphon without a non-return valve.
Fig. 7. Example of a siphon with a one-way valve
Any drainage system cannot be directly connected to the common waste water system in order to protect supply air
from contamination with bacteria and odours. Condensate from the air handling unit drainage system shall be collected into
a separate container or should be lead to a sewage grille without any direct contact: do not connect drain directly to sewer
pipe and do not immerse it into water. Condensate collection location must be easily accessible for cleaning and disinfection.
Fig. 8. Condensate drain connection to sewer system

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Domekt S_Verso Standard S_manual_23-0414
4. TECHNICAL INFORMATION
Unit
Hot water Electric Fans input
power Weight
Operating
current
Supply
voltage
Heater
capacity
Operating
current
Supply
voltage
Heater
capacity
A V kW A V kW Wkg
Domekt S
650 F - - - 14,7 / 10,4 1~230 /
3~400 3 / 6 172 35
800 F 1,9 230 4,1 10,3 / 14,6 3~400 6 / 9 181 37
1000 F 1,9 230 6,5 14,6 / 23,3 3~400 9 / 15 182 46
Verso S
1300 F 31~230 7 15,7 / 24,4 3~400 9 / 15 350 46
2100 F 3,3 1~230 12,2 24,7 / 35,6 3~400 15 / 22,5 340 73
3000 F 3,8 3~400 35,4 ---629 130
5. UNIT DIMENSIONS
L
H
h2
D
b2
B
L1
D
b1
B
h1
Unit Dimensions, mm
B/B1 L/L1 H/H1 h1 h2 b1 b2
Domekt S
650 F 475 919/873 297 120 120 237,5 237,5
800 F 475 1005/973 350 152 152 237,5 237,5
1000 F 700 925/893 350 152 152 350 350
Verso S
1300 F 700 925/893 350 152 152 350 350
2100 F 1000 953/893 350 152 152 500 500
3000 F 1015 1290/1160 555 250 250 657, 5 507, 5
6. ELECTRICAL INSTALLATION
Only qualied professionals may perform electrical installation works in accordance with the manufacturer’s instructions
and applicable legal acts and safety requirements. Before installation of any electrical components:
• Make sure the unit is unplugged from the mains.
• If the unit has been standing in an unheated room for a long time, make sure there is no condensa-
tion inside and check if contacts and electronic parts of the connectors are not damaged by moisture.
• Inspect the power cable ant other wiring for damage in insulation.
• Locate the wiring diagram for your unit according to the unit type.

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Domekt S_Verso Standard S_manual_23-04
6.1. Requirements for Electrical Connection
• Connect the unit only to a proper power outlet with protective earthing. Earthing must be installed
according to the EN61557, BS 7671 requirements.
• It is recommended to connect AHU to the mains via automatic circuit breaker with 30 mA current
leakage protection (type B or B+).
• Control cables should be installed at least 20 cm away from power cables to reduce the possibility of
electrical interference.
• All external electrical elements must be connected strictly according to the wiring diagram of the
unit.
• Do not disconnect the connectors by pulling wires or cables.
Lead-in cable diameter depends on a maximum current specied in the technical data print-out of the specic unit.
Current, A Cable type
15 5 × 1,5 mm2(Cu)
21 5 × 2,5 mm2(Cu)
27 5 × 4,0 mm2(Cu)
34 5 × 6,0 mm2(Cu)
50 5 × 10,0 mm2(Cu)
70 5 × 16,0 mm2(Cu)
85 5 × 25,0 mm2(Cu)
6.2. Connection of Electrical Components
All internal and external elements of the unit are connected to the main board of the C5 control panel (marked as “RG1” in
wiring diagrams), located inside the unit. In some units, you will need to unscrew the metal cover to access the control panel.
You can see the exact location of the C5 control panel in the unit in section “Unit components”.
37 38 39 40 41 42 43 44 45 46 47 48
13 14 15 16 17 18 19 20 21 22 23 24
25 26 27 28 29 30 31 32 33 34 35 36
12345678910 11 12
25 26 27 28 29 30
12
2
3
4
1
Fig. 9. C5 controller main board
1 – control panel connection, 2 – Intranet or Internet connection, 3 – inner connections of components,
4 – terminals for external components

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Domekt S_Verso Standard S_manual_23-0416
Terminals for the external elements of the controller board are numbered and are used only to connect external compo-
nents. These may remain empty if no additional features are required.
GND
~24V
~24V
~24V
~24V
~24V
~24V
~24V
GND
0..10V
0..10V
0..10V
0..10V
0..10V
0..10V
0..10V
NO
NO
NO
NO
NO
C
C
C
NTC
B5
INPUTS
OUTPUT
OUTPUTS
INPUTS
INPUT
OUTPUTS
B9 B8 B7 B6 FG1 DX
Indication
Humidity sensor
MODBUS
RS485
interface
Water pump
for heating 230V AC, 1A
Cold water
mixing valve /
DX capacity control
Heating damper
actuator
Humidifier
control
Return water
temperature sensor
Supply air
temperature sensor
External control
External stop
Fire alarm system
OVR control
Common
Air quality
sensor
Exhaust air
pressure sensor
Supply air
pressure sensor
Air damper
actuator
Operation
Alarm
Common
Water pump/
coil alarm
DX3
/ Heating
DX2
/ Cooling
DX1
/ Start
Common
External control
B1 TG3 TG2 TG1 S2 S1
NTC
A
GND
IN4
IN3
IN2
IN1
B
DIN L
L
N
N
N
N
N
N
N
N
N
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
Water pump
for cooling 230V AC, 1A
Fig. 10. Connection terminals for external components on the C5 main board
Total power of all external devices with 24 V supply voltage shall not exceed 25 W.
Modbus RS485 (1-3) – data cable connection for controlling the unit from a building management system via Modbus
RTU protocol. Also these terminals can be used for additional heating/cooling zone control module connection (see „Ad-
ditional zone control installation manual“).
External control (4–8) – terminals for controlling specic functions of the unit via external contacts which are con-
nected to a common terminal 8. These include thermostats, switches, motion sensors and other devices with normally open
or closed contacts. Activated functions will operate as long as those contacts are connected.
• Terminal 4 is used to switch between heating and cooling modes, if a combined water heater is used (after terminals are
connected, the water valve actuator and pump will be controlled according to the cooling signal. For example, a thermo-
stat can be connected here to close terminals when cold water circulates in the system).
• Closing contacts 5and 8will stop the unit.
• Fire alarm requires a normally closed contact (NC), therefore, a jumper is connected between terminals 6 and 8, instead
of which, building re system can be connected. When the contact is disconnected, the unit stops or fans speed up (ac-
cording to the order) and a re alarm message is displayed.
• Terminal 7 actives an “Override” ventilation mode (OVR). This mode has priority over other AHU functions and may be
activated even when the unit is stopped (i.e. to start the unit by closing contacts). OVR function settings are set via the
control panel or computer. This function is active as long as terminals are closed.

17
UAB KOMFOVENT we reserve the right to make changes without prior notice
Domekt S_Verso Standard S_manual_23-04
B5 (9–10) – when a water heater is installed, this terminal is used for connecting a return water temperature sensor (NTC
10kΩ) which protects against freezing.
Fig. 11. Return water temperature sensor
B1 (11–12) – terminal for a supply air temperature sensor (NTC 10kΩ) for controlling air temperature.
Fig. 12. Supply air temperature sensor
For the most accurate temperature measurement, sensor in a duct must be installed after all heating/cooling devices at
least two duct diameters away from the nearest coil.
D
>2D
Fig. 13. Installation of a supply air temperature sensor

EN
UAB KOMFOVENT we reserve the right to make changes without prior notice
Domekt S_Verso Standard S_manual_23-0418
TG3 (13–14) – for connecting control signal (0..10 V) of an external humidier or dehumidier, if activated.
TG2 (15–17) – power supply (24 V AC) and control signal (0..10 V) for a water cooler mixing valve actuator. If a DX unit
is installed (controlled by a modulated signal), DX unit control signal is connected to these terminals and water cooling is
disabled.
TG1 (18–20) – power supply (24 V AC) and control signal (0..10 V) for a water heater mixing valve actuator. If a combined
water heater/cooler is used, valve actuator will be controlled by a heating or cooling signal (whichever is supplied).
S2 (21–22) – 230 V AC supply voltage for a cold water circulation pump, which is used with external water cooler coil and
is activated when cooling is needed. Max 1 A.
S1 (23–24) – 230 V AC supply voltage for a hot water circulation pump, which is used with external water heater coil and
is activated when heating is needed. Max 1 A.
B8/B9 (25–30) – terminals for air quality and humidity sensors, which are used for the following functions (see “User
Manual”):
• Air quality control (AQC).
• Operation on demand (OOD).
• Humidity control (HUM).
These functions may be controlled via the following type sensors (sensor type may be changed only by an authorised
service representative):
• Carbon dioxide CO2(default setting) – range 0..2000 ppm.
• Air quality VOC (Volatile organic compound) – range 0..100%.
• Relative humidity RH – range 0..100% RH.
• Temperature TMP – range 0..50°C.
B6/B7 (31–36) – when a VAV airow control method is used (see “User Manual”), optional pressure sensors must be
installed and connected in the ducts. Follow the manufacturer’s instructions for installation of VAV pressure sensors. Also,
these terminals are used for DCV airow control when a separate 0...10 V signal can be used to adjust the ventilation intensity
(see “User Manual”).
FG1 (37–39) – terminals used to connect air damper actuators. These terminals may also be used for connecting 24 V AC
power supply actuators with or without a spring return.
Indication (40–42) – terminals are used when a normally open (NO) contact is necessary for operation status or fault
indication.
Cooling control (43–46) – digital normally open (NO) outputs for controlling direct expansion (DX) coolers/heaters. The
purpose of outputs diers depending on the type of DX device control ordered or programmed in the control panel1:
• Stepping control of start/stop type DX cooling devices – each of the 3 outputs is activated one after the other, when the
power of the previous stage is insucient, with 5 min. delay.
• Stepping control of start/stop type reversible (cooling/heating) DX devices – DX1 and DX2 outputs are activated one
after the other, when the power of the previous stage is insucient, with 5 min. delay. DX3 output is used for switching
DX devices between cooling and heating modes.
• If a DX device is controlled by a modulated signal (0..10 V), digital outputs are used for starting a DX unit and changing
operation modes thereof: DX1 – start signal, DX2 – cooling, DX3 – heating. Power control signal for this type of the DX
unit is connected to TG2 terminals.
Water pump/coil alarm (47–48) – here you can connect signal for indication of water pump faults (if this function is
available on the pump); if the pump fails, the air handling unit is stopped. Also these terminals can be used for additional
frost protection of water heater coil, by connecting here capillary thermostat, which is mounted on the surface of the coil.
All wires to be connected to the main controller board shall be pulled through grommets (top or side of the air handling
unit). Grommets are fastened to ensure tightness.
1
If the DX device was not predened in the controller software, these outputs will be inactive.

19
UAB KOMFOVENT we reserve the right to make changes without prior notice
Domekt S_Verso Standard S_manual_23-04
6.3. Control Panel Installation
The control panel must be installed in a room with:
• Ambient temperature – 0..40°C;
• Relative humidity – 20..80%;
• Guaranteed protection against accidental water drops.
Control panel can be mounted in a concealed mounting box or directly on the wall (screws supplied with the panel). You
can also use magnets (on the back surface) to attach the panel to metal surfaces (i.e. on the door of the unit).
Do not use any other type or size screws but those that are supplied for control panel mounting. Wrong
screws may cause damage to a circuit board.
Control panel is supplied with a 10 m cable. If this cable is too short, you can replace it with a 4 × 0.22 mm cable, up to
150 m long.
1
2
3
4
+24V
LIN A
LIN B
GND
Red
Yellow
Green
White
RJ9
A B
+
< 150 m
4 x 0,22 mm2
25 26 27 28 29 30
12
Fig. 14. Control panel wiring diagram

EN
UAB KOMFOVENT we reserve the right to make changes without prior notice
Domekt S_Verso Standard S_manual_23-0420
Control panel cable shall be installed further away from other power supply cables or high voltage electrical equipment
(electrical enclosure, electrical water heating boiler, air conditioning unit, etc.). The cable can be pulled through openings in
the back or bottom part of the control panel (follow the installation instructions provided with the control panel). Cable to
the C5 control board must be connected to a dedicated slot (see Fig. 14).
Yellow(A)
(+) Red
Green (B)
( ) White
Yellow (A) ( ) White
(+) Red
Fig. 15. Control panel cable wiring
Do not use sharp tools for pinning contacts in the control panel (e.g., screwdriver). Please use a pencil
or a ballpoint pen.
6.4. Connecting the Unit to the Internal Computer Network or the Internet
Your AHU may be controlled not only with a control panel, but also with a computer or smart phone. For this reason
the unit must be connected to the internal computer network or the Internet. In case of a computer, the unit is controlled
via a web browser, and in case of a smart phone - via the Komfovent app. Use CAT5 type cable to connect your AHU to the
computer network (RJ45 connection; see Fig. 9). The total cable length between the unit and the network router must not
exceed 100 metres. By default, the IP address of your air handling unit is 192.168.0.50, however it can be changed (if neces-
sary) according to the local network parameters. IP address can be found and changed in the control panel.
ECONOMY 1
21,9 °C
Temperature
16:30
Functions Settings
Overview
Menu
Air handling unit
Personalization
Settings
Air handling unit
Temperature control
Flow control
Air quality
Time/Date
Connectivity
1 / 2
Connectivity
Controller ID
Default
IP
192.168.0.50
1 / 2
Modbus ID
RS-485
IP mask
255.255.0.0
1
19200
Scheduling
Fig. 16. Viewing and changing the IP address with a control panel