Komfovent C6.1 User manual

C6.1
EN Electrical installation and Operation Manual
C6.2

EN
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Content
1. ELECTRICAL INSTALLATION INSTRUCTIONS........................................................................................................................................3
1.1. Power supply connection...........................................................................................................................................................................3
1.2. Control panel installation...........................................................................................................................................................................3
1.3. Connection of external elements ...........................................................................................................................................................4
1.4. Temperature sensor installation...............................................................................................................................................................5
2. OPERATING MANUAL........................................................................................................................................................................................6
2.1. Unit control with the control panel ........................................................................................................................................................6
2.2. Connecting the unit to local computer network or the Internet.................................................................................................6
2.3. Unit control with a smartphone...............................................................................................................................................................8
2.4. Control Panel C6.1.........................................................................................................................................................................................9
2.4.1. Displayed symbols on the panel.................................................................................................................................................9
2.4.2. Review of the parameters .......................................................................................................................................................... 10
2.4.3. Operation mode selection......................................................................................................................................................... 10
2.4.4. ECO mode........................................................................................................................................................................................ 11
2.4.5. AUTO mode..................................................................................................................................................................................... 12
2.4.6. Menu.................................................................................................................................................................................................. 12
2.4.6.1. Overview ......................................................................................................................................................................... 12
2.4.6.2. Scheduling...................................................................................................................................................................... 13
2.4.6.3. Air quality........................................................................................................................................................................ 15
2.4.6.4. Settings............................................................................................................................................................................ 15
2.4.6.5. Advanced settings....................................................................................................................................................... 15
2.5. Control Panel C6.2...................................................................................................................................................................................... 20
2.5.1. Operating mode selection......................................................................................................................................................... 20
2.5.2.„ECO“.................................................................................................................................................................................................. 20
2.5.3. AUTO mode..................................................................................................................................................................................... 20
2.5.4. Warning indicator.......................................................................................................................................................................... 20
2.5.5. Reset button.................................................................................................................................................................................... 20
2.5.6. Turning the unit on/o................................................................................................................................................................ 20
2.5.7. Keypad lock..................................................................................................................................................................................... 21
2.5.8. Control panel alarm message sound signal enable / disable........................................................................................ 21
2.6. Troubleshooting.......................................................................................................................................................................................... 21
APENDIX NO.1. KOMFOVENT CONTROL Terms of Use and Privacy Notice.............................................................................. 24

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C6_20-08 3
1. ELECTRICAL INSTALLATION INSTRUCTIONS
The installation can only be performed by qualied personnel. It is necessary to follow the requirements below
during the installation.
It is recommended to lay the control cables separately from the power cables,
at a minimum distance of 20 cm.
The connector connection is performed strictly according to the wiring dia-
gram numbering, or with adequate markings (see the principal wiring dia-
gram of the unit).
When removing the unit parts, do not pull on the connecting wires and ca-
bles!
Before performing any work inside the equipment, make sure that the air
handling is switched o and disconnected from the mains power supply.
1.1. Power supply connection
The unit is designed for a supply voltage of 230 V AC, or 50 Hz; therefore, you must install a socket with an earthing
of the corresponding capacity next to it (see the wiring diagram). The power cable type is indicated in the wiring
diagram.
It is recommended to connect AHU to the mains via 16 A automatic circuit
breaker with 300 mA current leakage protection (type B or B+).
The air handling unit is designed to connect only to a neat outlet, with protec-
tive grounding meeting all the electrical safety requirements.
1.2. Control panel installation
1. The control panel must be installed in the premises under the following conditions:
• at an ambient temperature of 0 °C... 40 °C;
• relative humidity ranging from 20%... 80 %;
• protection from accidentally falling water drops (IP X0).
2. Control panel connection through the hole in the back or in the bottom.
3. The control panel can be mounted on a ush mounting box or in any other place, simply by screwing it to the
surface through the two holes on the fastening surface.
4. The control panel is connected to the controller box. The length of installation cable for the control panel may not
exceed 150 m.
Do not use any other type or size screws but those that are packed together
for control panel mounting. Wrong screws may damage electronics board.
Control panel connection
Yellow (A) () White
(+) RedGreen (B)
Yellow(A)
(+) Red
Green (B)
()White Yellow (A) () White
(+) RedGreen (B)
Yellow(A)
(+) Red
Green (B)
()White

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The cable thicknesses for the panel connection and others are specied in
the wiring diagram!
Remove protective screen tape, before mounting front cover on the control
panel!
1.3. Connection of external elements
The air handling unit has external connection terminals in the control box, inside the air handling unit. They are
used to connect all the external control elements.
123
1. Ethernet connection of computer network or Internet
2. Controller panel connection
3. Connection of external elements
Fig. 1.3 a. Controller with the connection terminals
Fig. 1.3 b Connection diagram for external elements

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The total power of all the external elements, powered from a 24 V voltage,
must not exceed 30 W.
1.4. Temperature sensor installation
Supply air temperature sensor B1 (Fig. 1.4 a) must be installed in the duct of supplied air to the premises, past all
the additional air heating/cooling equipment (if any). It is recommended to install the sensor in the straight segment
of the air duct within the distance of 5 duct diameters in front and after the sensor (Fig. 1.4 c).*
Supply air temperature sensor B1 is not necessary if CAV or DCV airow con-
trol is not enabled (more details in section 2.4.6.5) and internal electrical* or
duct mounted air heater or cooler is not used.
The at part of sensor must be directed perpendicularly to the airow for
sensing element would be well blown.
The water temperature sensor B5 (Fig. 1.4 b.) is mounted on the return water pipe, by screwing it into the provided
hole. The sensor must be thermally insulated!
Supply air temperature sensor B1 Water temperature sensor B5
Fig. 1.4 a Fig. 1.4 b
B1
DB
>5D >5D
D/2
Fig. 1.4 c
* exeption R300V unit.

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2. OPERATING MANUAL
2.1. Unit control with the control panel
The air handling unit can be operated by one of the following panels (Fig. 2.1).
C6.1 – panel with a touch screen for parameters of air handling unit setting and indication. The panel has integrated
thermometer and hygrometer for indoor climate monitoring.
C6.2 – panel with touch-sensitive buttons is intended for main air handling unit parameters setting.
C6.1 C6.2
Fig. 2.1. Choice of control panels
2.2. Connecting the unit to local computer network or the Internet
The unit can be controlled not only by the control panel, but also by computer. In such cases, the air handling unit
must be connected to a local computer network or to the Internet. The unit is controlled by a computer using a web
browser. The air handling unit is connected to the computer network with a CAT5 type cable (RJ45 connector; see Fig.
1.3 a). The total cable length between the unit and the network router must not exceed 100 m.
The IP address can be found and changed on the control panel*(see Advanced settings→Connectivity).
An air handling unit connected to a network router can be controlled by a computer via a wireless connection
(Wi-Fi) on the local network. After connecting the unit to the network router, activate the DHCP setting on the panel
(see Advanced settings→Connectivity). This will automatically assign the unit a free IP address on the local network
(do not use this setting if you connect the computer directly to the unit).
Fig. 2.2 a Example of the unit connection to a local network
* Only on the C6.1 panel (see Fig. 2.1)..

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When connecting the computer directly to the unit, in the network settings of the computer, it is needed to
manually assign an IP address the last number of which would be dierent from the unit’s IP address (for example,
if the unit’s IP address is 192.168.0.60, assign the address 192.168.0.70 to the computer). Also enter the subnet mask:
255.255.0.0.
Internet Protocol Version 4 (TCP/IPv4) Properties
General
Obtain an IP address automatically
Use the following IP address:
Use the following DNS server addresses:
Obtain DNS server address automatically
IP address:
Subnet mask:
Alternate DNS server:
Preferred DNS server:
Validate settings upon exit
Advanced...
Cancel
Default gateway:
You can get IP settings assigned automatically if your network supports
this capability. Otherwise, you need to ask your network administrator
for the appropriate IP settings.
192 . 168 . 0 . 70
255 . 255 . 0 . 0
. . .
. . .
. . .
OK
Fig. 2.2 b. Computer network settings for direct connection to the unit
When connecting the computer directly to the unit with a computer, you will have to enter IP address the Internet
browser to point to the user interface of the air handling unit.
Komfovent
192.168.0.60
You will need to change more settings to control your unit over the Internet using your computer. First, port
forwarding must be configured to the IP and port number of the unit 80, according to the instructions of the network
router.
INTERNET
Fig. 2.2 c Example of unit connection to a the Internet

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When connecting the computer to the internet with, you will have to enter an external router IP address and the
port number in the Internet browser to point to the user interface of the air handling unit.
Komfovent
192.168.0.60: 80
Connect to the C6 control panel interface: enter the user name user, password user*and press CONNECT.
Log in
user
Log in
user
2.3. Unit control with a smartphone
After connecting the air handling unit to a computer network or the Internet, it can be controlled with your smart
phone with an iOS or Android operating system. Download and instal “Komfovent Control” app. Connect by scaning
QR code on the AHU door.
Controller ID
Password
CONNECT
Read QR code
Select from list
Find ID on local network
To download the applet, just search for it in the GooglePlay or iTunes stores. If app is used for the rst time, You
will be prompted to read and accept privacy policy (see Apendix No.1)
Tip: The applet user interface and the control capabilities are fully consistent with the C6.1 control.
* Should you forget a changed password, it can be reset to the initial “user”. To do this, you must restore the factory settings for the air
handling unit using control panel.

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2.4. Control Panel C6.1
Time
Button for activation of
ECO operating mode
Menu
Indication of equipment
modes/functions
Indication of actual
operating mode
Button for activation of
AUTO operating mode
Fig. 2.4. C6.1 panel main window
2.4.1. Displayed symbols on the panel***
Fan operation
Energy recovery operation
Air heater operation
Air cooler operation*
There is a heating demand, but it is
being blocked by the ECO mode**
There is a cooling demand, but it is
being blocked by the ECO modes2
ECO mode on**.
Air ow reduction.
ECO mode on**. Free cooling
operation.
ECO mode on**. Free heating
operation.
Alarm signal
(see the troubleshooting section)
Supply air
Exhaust air
Outside air temperature
Air lters
Instant heat recovery of the air
handling unit
Instant power consumption of the air
handling unit
* The air handling unit has the air cooling function, but it requires the following additional components which should be ordered in
advance: DCW duct coil (for water cooling) or DCF duct coil with outdoor DX unit (for DX cooling).
**For more about the ECO mode, read Section 2.4.4.

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2.4.2. Review of the parameters
Main unit parameters: air ow, temperature and lter clogging are displayed in the second window, and the
energy parameters – energy recovery and power consumption – are displayed in the third panel window.
Tip: For window scrolls, swipe your nger on the screen to the appropriate side.
All other air handling unit parameters are presented in the “Overview” menu item (see Section 2.4.6.1.).
2.4.3. Operation mode selection
There is provided four usual operation and four special operation modes. User can choose one of them from the
main panel window by clicking on the center button.
NORMALAWAY
INTENSIVE BOOST
HOLIDAYSOVERRIDE
KITCHEN FIREPLACE
Operation modes
Usual operation modes
Away. The recommended choice when you are not at home or when there are fewer people inside the
premises than usual. The ventilation intensity will be 20%.
Normal. Recommended when there is the usual number of people inside the premises. The ventilation
intensity will be 50%.
Intensive. The recommended choice when there are more people inside the premises than usual. The
ventilation intensity will be 70%.
Boost. The recommended choice when it is necessary to quickly ventilate the premises. The ventilation
will run at its maximum intensity.

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Special operation modes
Kitchen. Recommended during cooking, when running the kitchen hood. This mode increases the
eciency of the hood, as the air handling unit will increase the air ow to the premises by up to 80%,
and the discharge is reduced to a minimum intensity of 20%.
Fireplace. The recommended choice when lighting a replace. This mode improves the suction of the
smoke through the chimney, causing a small overpressure in the room, because the unit supplies fresh
air at a 60% intensity and removes the air from the premises at a 50% intensity.
Override. This mode activates the air handling unit at the set intensity of 80%, despite the other
mode settings. This mode has the highest priority over the other modes, and will run even after the air
handling unit has been turned o.
Holidays. The recommended choice when leaving home for a longer period of time. The premises will
be ventilated periodically in 30 min. cycles (several times a day) at the minimum intensity.
Any special operating modes can be activated in the panel and by using a mobile phone or computer. When you
select a special mode, you will need to enter the duration of its operation, after which the air handling unit will return
to the previous mode. KITCHEN, FIREPLACE and OVERRIDE modes are set for time range from 1 to 300 min. In HOLIDAY
mode, the time interval can be set from 1 day to 90 days, or a specic date can be selected.
The KITCHEN, FIREPLACE and OVERRIDE special modes can be activated by
the external control contacts (Fig. 1.3 b). Modes activation by the contacts
has a priority.
The parameters for all eight modes are preset at the factory, but each of them
can be modied individually. This requires selecting the desired mode and touching
the icon for ve seconds. In the window that opens, you can change the air ow,
temperature and deactivate the electric heater in the unit:
2.4.4. ECO mode
ECO – an energy-saving mode to minimize the power
consumption of the air handling unit. The ECO mode has
three-fold operation eects:
• Blocking the electric heater operation in the air han-
dling unit, and blocking of all external air heating/cool-
ing elements.
• Activation of the Free cooling function, which at some
point blocks the heat recovery process, if the outdoor
coolness has to be used in an energy-ecient way.
Cooling with the outdoor air automatically starts if the
room air temperature is above a set value, and the out-
door air temperature at that time is lower than that in
the room but not below the set min. value. Similarly, in
the case of the opposite temperature conditions. Free heating is carried out.
• As the temperature control with heat recovery alone will not be ensured at all times, in the case of an extreme
conditions, when the supply air temperature is below the specied minimum value (in winter) or exceeds the
maximum value (in summer), the unit will try to maintain the temperature by decreasing the ventilation intensity.
If the temperature does not reach the required min./max. limits over a long period of time, the air volume can be
reduced to the lowest possible value (20%).
Heater blocking
On
Cooler blocking
On
Constant heat recovery
O
Free cooling
On
ECO
Min. supply air temperature
15,0 °C
1 / 2
Max. supply air temperature
25,0 °C
ECO
Reset settings
2 / 2
Reset settings
Supply ow
250 m3/h
Extract ow
250 m3/h
Electric heater
On
Air temperature
20°C
NORMAL

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The ECO mode settings are preset at the factory, but the operation mode can be modied. This requires push
and hold for ve seconds the ECO button in the initial start-up window. In the window that opens, you can change the
default settings.
During operation of the ECO function, selecting the “Constant heat recovery” activates the heat recovery as soon
as it is possible to return heat or cold from the premises, regardless of the desired temperature. Constant heat recovery
will not work in case when free cooling/heating mode is in operation.
2.4.5. AUTO mode
AUTO – an automatic operation mode when the unit is operating and changing the ventilation intensity based on
the chosen (pre-set) weekly operating schedule.
However, if at least one air quality sensor is connected to the air handling unit,
the AUTO key will activate the automatic air quality control function. Then, the
ventilation intensity is adjusted, not according to the schedule, but according to
the current air pollution in the room.
See more details in Section 2.4.6.3.
2.4.6. Menu
The settings menu consists of four points,
where you can view the relevant user information,
choose the operating schedule, change the
settings or turn o the unit.
If to the air handling unit is connected the air
quality or humidity sensor, then the “Scheduling”
menu item will disappear and instead of it, you
will see “Air Quality”. See more details in Section
2.4.6.3.
2.4.6.1. Overview
The user can view the main air handling unit settings in the start-up windows
(see Section 2.4.2.). However, all other information related to the operation of the
unit, as well as to malfunctions and eciency states, is provided in a detailed review
of the menu item.
Detailed information
Supply ow
350 m3/h
1 / 3
Supply air temperature
21,9 °C
Extract air temperature
22,1 °C
Air temperature
16,6 °C
Water temperature
25,3 °C
Detailed information. All temperature sensor readings, functioning of
separate air handling unit elements and other detailed information is available in
this menu
Menu
Overview
Scheduling
Settings
TURN OFF
or
Menu
Overview
Air quality
Settings
TURN OFF
Detailed information
Eciency & consumption
Alarms
About device
Energy counters
Overview

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Eciency and consumption. The menu is used for
monitoring the heat exchanger eciency, energy
savings, heat recovery and power consumption in real
time.
Energy counters. This menu shows how much energy is
recovered by the heat exchanger, as well as the energy
consumed by the heater and the entire unit. It also
shows the average daily value of the specic power of
the air handling unit (SPI).
Alarms. This menu displays messages about existing
faults. After the removal of the fault (see Chapter 2.6),
these messages can be deleted by selecting Delete. By
pressing the “History” button, you can view up to 50
faults in the recorded history.
2.4.6.2. Scheduling
The menu item is used for planning the air handling unit operations, according to a weekly program. The user can
select one of the four schedules using the arrows at the bottom:
Scheduling
04 8 12 16 20 24
Pr
An
Tr
Kt
Pt
Št
Sk
STAY AT HOME
• STAY AT HOME
Recommended when there are always people in the residential premises and
ventilation is always needed.
• WORKING WEEK
Recommended when people are at work during the daytime, i.e. they are at
home only in the morning and evening, and on weekends.
• OFFICE
Recommended if the unit is installed in an oce, and the ventilation is required
only during the day and only on weekdays.
• CUSTOM
Schedule available for an individual user’s programming. The program is not set
by default.
Recovered energy, kWh
Day / Month / Total
24 / 720 / 2160
Consumed energy, kWh
Day / Month / Total
11 / 353 / 960
Specic power (SPI) per day
0,38
Heating energy, kWh
Day / Month / Total
9,6 / 288 / 777
Energy counters
Alarms
F6
Electric heater overheat
F4
Low supply air temperature
Delete History
About device. This menu displays information about
AHU type, rmware versions and serial number.
By pressing C6 ID line, QR code will be generated, that
can be used when connecting via “Komfovent Control”
mobile app.
About device
1/ 2
C6 ID
A1234-B1234-C1234-D12345
Configuration
R-400-F_v1945
Main module firmware
C6 1.4.28.38
Control panel firmware
1.1.3.25
Filters
278x258x46 mm
About device
1/ 2
C6 ID
A1234-B1234-C1234-D12345
Configuration
R-400-F_v1945
Main module firmware
C6 1.4.28.38
Control panel firmware
1.1.3.25
Filters
278x258x46 mm
Eciency & consumption
Power consumption
1050 W
Specic power (SPI)
0,32
Heat exchanger eciency
83%
Energy saving
90%
Heat recovery
4011 W
Heating power
850 W

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The schedules are preset at the factory, but each of them can be modied
individually, or the user can create his own schedule. To do this, select the preferred
schedule and touch the schedule in the centre of the screen for ve seconds.
All of the above schedules can have up to four dierent operation programs.
Each program can be made of ve events.
To start the program, or the event, click “+” – and to cancel it click “X”.
To view the programs (if there are several of them), click on the gures in the
bottom of the application bar: 1, 2, 3 or 4.
After adding a new event, rst choose the days of the week in the program, then
continue to set the operation modes: AWAY, NORMAL, INTENSIVE or BOOST and the
operation start and end times.
STAY AT HOME
1 2 3
Mo Tu We Th Fr Sa Su
08:00 16:00
16:00 17:00
17:00 20:00
To disable the air handling unit, you can set the STANDBY mode, or when setting the program’s events just make
a break at the times when the unit must not operate.
In order for the air handling unit to operate according to the selected weekly
schedule, press the AUTO button on the main window (Fig. 2.4).
Factory set schedules
STAY AT HOME
Program No. Days of the week Event start time Event end time Mode
1 Mo - Su
00:00 08:00 AWAY
08:00 22:00 NORMAL
22:00 24:00 AWAY
WORKING WEEK
Program No. Days of the week Event start time Event end time Mode
1 Mo - Fr
00:00 06:00 AWAY
06:00 08:00 NORMAL
08:00 16:00 STANDBY
16:00 22:00 NORMAL
22:00 24:00 AWAY
2Sa
00:00 09:00 AWAY
09:00 16:00 NORMAL
16:00 20:00 INTENSIVE
20:00 23:00 NORMAL
23:00 24:00 AWAY
3 Su
00:00 09:00 AWAY
09:00 22:00 NORMAL
22:00 24:00 AWAY
OFFICE
Program No. Days of the week Event start time Event end time Mode
1 Mo - Fr
07:00 08:00 AWAY
08:00 12:00 NORMAL
12:00 17:00 INTENSIVE
17:00 18:00 AWAY

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2.4.6.3. Air quality
When the external air quality or humidity sensors are connected to the control
terminals, automatically activates the air quality control, and the “Scheduling” menu
item is replaced by “Air Quality”.
Operation of air handling unit according to the air quality sensors ensures the
maximum comfort with the minimum consumption, i.e. the user does not need
to plan the schedule because the ventilation intensity is adjusted automatically,
depending on indoor air pollution.
To activate the air quality mode, click the AUTO button on the main
control panel window (Fig. 2.4).
Air impurity
800 ppm
Air humidity
80%
Electric heater
On
Air temperature
20C
Air quality
Reset settings
In the “Air Quality” settings menu item, the user can set the maintained air
quality or humidity value, as well as the maintained temperature, and can deactivate
the electric heater in the unit, if necessary.
2.4.6.4. Settings
This menu item is used for the user interface basic settings. You can use it to
change the menu language, measurement units, time and date, enable panel
blocking or turn o control panel sound signal for the alarm messages.
2.4.6.5. Advanced settings
Additional air handling unit settings are provided in a deeper menu screen.
To open the advanced settings window, press the “Settings” menu button for ve
seconds.
Temperature control. The air handling unit has several temperature
maintenance methods:
• Supply. The unit provides the air at the user-dened temperature.
• Extract. The unit automatically supplies the air at a temperature so that the set
temperature of the extract air is maintained.
• Room. The unit control the ambient temperature, according to the temperature
sensor in the panel.
• Balance. The temperature control value of the supply air is automatically set on
the basis of the current extract air temperature, i.e. what temperature air will be
removed from the premises, the same temperature air will be supplied back.
Language
English
Flow units
m3/h
Panel lock
None
Screen saver
On
Settings
Atstatyti nustatymus
Panel sound
Time/Date
Temperature control
Flow control
Control sequence
Air quality control
Advanced settings
1/ 2
Reset settings

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• VAV – variable air volume control mode. The unit will supply and exhaust the air volume depending on the ven-
tilation needs in dierent rooms, i.e., the constant pressure in the system will be maintained by the variable air
volumes. After selecting the VAV ow control, the user will have to set the pressure maintained by the ventilation
system for each of the four modes.
This function requires additional VAV sensors, which must be ordered separately.
The connection of the sensor is shown in Fig. 1.3b.
If you select the VAV ow regime, the automatic air quality support will be disa-
bled. The AUTO button will activate the weekly operation schedule.
• DCV – Directly Controlled Volume). The air handling unit will operate similarly as in the CAV mode, but air volumes
will be maintained directly in accordance with the values of the B6 and B7 analog input signals of controller. After
giving the signal 0... 10 V to the appropriate input, it will be converted according to the current determined air
volume. For example, if the maximum air ow of the unit is 500 m3/h, setpoint in the panel – 250 m3/h, and the B6
input value – 7 V, the unit will supply constant air volume of 175 m3/h, i. e., 70% of the set value. The same applies
to the exhaust air only by B7 input.
With special modes (KITCHEN, FIREPLACE, OVERRIDE and HOLIDAYS) the unit will
always operate only in the CAV mode, regardless of the selected ow control.
After selecting the “Balance” mode, the temperature setting will disappear.
Flow control. By default unit operates without airow control and fans run constant speed which was selected
by the user. In case if the airow control is needed, user can select one of the following:
• CAV – constant air ow control mode. The unit supplies and exhausts a constant air volume set by the user, regard-
less of the pollution condition of the air lters and the ventilation system changes.
When activating the air handling unit for the rst time, the air ow statements
may dier from the real ow until the end of the air ow calibration process.
The adaptation process may take up to one hour before all the parameters
become stable.
Flow control mode
CAV
Supply ow correction
0 m3/h
Extract ow correction
0 m3/h
Flow control
When CAV (or DCV) airow maintenance mode is selected, there is the
possibility to correct the delivered and exhaust airows by +/-30% for actual air
quantity developed by device after automatic calibration wouldn’t coincide with
those set in the control panel.
Correction of airow may be entered only if operation mode of
ventilation device is steady. It is recommended to enter the cor-
rection when the ventilation intensity level is not less than 50%
To have a correct airow control in CAV (or DCV) mode, supply
temperature sensor B1 must be installed according instructions
stated in 1.4 paragraph.

UAB KOMFOVENT we reserve the right to make changes without prior notice
C6_20-08 17
Impurity control
On
Humidity control
On
Sensor 2
RH
Sensor 1
CO2
Air quality control
Outdoor humidity
None
1 / 2
Minimum intensivity
0 %
Maximum intensivity
70 %
Check period
2 h
Air quality control
2 / 2
Impurity control. Air quality control is activated by
default. In order for the unit to operate in the AUTO mode
not according to the air quality, but according to the
weekly schedule, this function can be deactivated.
Air quality control is provided with the several
sensors. Their types are congured as follows:
CO2 – Carbon dioxide concentration sensor [0...2000
ppm];
VOC – Air quality sensor [0... 100%];
The air quality control will automatically regulate
ventilation intensity in the range of 20...70%. If necessary,
the range may be adjusted.
If the minimum ventilation intensity is set to 0%, the
air handling unit will be allowed to turn o when the air
quality in the room meets the required value. However, the unit will turn on for a short time periodically every 2 hours
(this is congurable), to check the air quality in a room. If after checking, the air pollution does not exceed the set value,
the air handling unit is switched o. However, if after checking the air quality is poor, the air handling unit will continue
its operation until the room is ventilated.
Humidity control
If humidity control function is activated, dehumidication of air in the premises is possible. Dehumidication can
be realized in a following ways:
• If outdoor humidity is measured by additional humidity sensor, air in the premises can be dehumidied, when
outdoor humidity is lower than indoor. Humidity in the premises will be measured by another, additionally con-
nected sensor or by humidity sensor integrated in the control panel. In the settings set sensor type as RH and
specify which of the sensors is for outdoor humidity measurement. In the AUTO operation mode, fans will run on
minimum speed (see. “Impurity control”), until indoor humidity will be lower than setpoint. In case if premises
should be dehumidied and outdoor humidity is lower than indoor, fan speed will be gradually increased and
drier air supplied.
• If outdoor humidity sensor is not used, “Humidity control” function works the same way as “Impurity control”
function, but instead of air-quality sensor, additionally connected humidity sensor or sensor from the control
panel will be used.
• When external DX unit or duct mounted cold water coil is used (activated in the “Control sequence” settings), it is
possible to dehumidify additionally by cooling the supply air. In that case, temperature setpoint will be ignored,
and colder drier air will be supplied, until indoor humidity setpoint is reached. Before starting cooling devices,
dehumidication with outdoor air is also possible, when outdoor humidity sensor is connected and outside air is
drier than indoor. Dehumidication with cooling devices is possible in AUTO and in standard ventilation modes.
To use DX unit or duct mounted cold water coil for dehumidication, it is needed to check the “Allow dehumidify
with cooling” option (See “Control sequence” settings). Together with this setting, an option to set desired humidity
will appear in the adjustment screen of standard ventilation modes.
Fire damper*
parameters for the re damper system tests
can be set. It is possible to select either automatic
or manual re damper test. For automatic test, it is
needed to set testing interval, as well as time of the
day, when the tests will be performed. During re
damper test, AHU will be stopped for several minutes,
re dampers opened and closed. External re damper
controller will check are al the dampers functioning
normally and will give the signal for AHU to restart or
will indicate alarm message if something is wrong in
the re damper system.
* Available only if optional re damper controller is congured and connected. Refer to Fire damper controller manual for more
information.
Fire dampers
Test period
7
Test time
12:00
Manual test
Start
Last test
2020-08-18 12:00
Automatic test
1/ 2
Fire dampers
Next test
2020-08-18 12:00
2/ 2

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C6_20-08
18
Control sequence
In the “Control sequence” advanced settings you can
set up to 3 levels of control, which will control the supply air
temperature, i.e. rst starts Stage 1, if it is not enough then
Stage 2, and then Stage 3. Only the default Stage 1 control
is activated in the factory for an electric heater – but you
can activate additional heaters/coolers, to coordinate their
operating sequences with each other or to completely turn
them o.
To activate the additional hot water duct heater, you
will need to select the “external coil” and set its type to “hot
water”. Selecting the “cold water” type of external coil will
activate the water cooling control. The external coil control
signal is output through the TG1 terminals (Fig. 1.3 b).
After activating the water heater, you must additionally connect
the water temperature sensor B5 to the controller terminals.
Selecting “External DX unit” as a controllable feature will activate the control of external outdoor DX unit. The
control signal is output through the controller terminals DX (Fig. 1.3 b).
The devices with the counterow disc heat exchanger have the automatic protection against the icing which
turns on the primary electric heater in case of the low outside temperature and high humidity in the room. This heater
uses alternating power which depends on the outside air temperature, the humidity level in the room (humidity
ratio in g/kg). and the actual air quantity in the ventilation device. The integrated primary electric heater operates on
demand only as much as needed and as long as needed. When the inside humidity is low the heater may stay o even
in the case of low outside temperatures.
Protections against icing:
• On – preset automatic protection with the integrated primary electric heater.
• O – the protection may be turned o however the ventilation device will operate only in the specic range of
the outside temperatures. As soon as the outside temperatures drop below -4°C the device will turn o after the
preset time.
• Outside heat exchanger – this option allows activation of protection by outside heat exchanger which is in-
stalled in front of ventilation device in the outside air airduct instead of internal integrated protection. The control
of the protective outside heat exchanger is provided via 0…10V signal which is sent using AUX terminals 9, 10 of
controller.
The humidity of the room:
• Auto – the humidity of the room is set automatically using the humidity sensor in the control panel and/or outside
humidity sensors connected to the controller’s terminals B8, B9.
• 10…90% - it is possible to set the xed setting of the room humidity if the control panel is installed in the inap-
propriate place (or isn’t used) and no outside humidity sensors are connected..
In case of entering the incorrect room humidity setting, there is the risk of
incorrect operation of the protection against icing and of freezing of the
counterow heat exchanger.
Stage 1
Electric heater
Stage 2
External coil
External coil type
Hot water
Stage 3
External DX unit
Control sequence
Icing protection
On
1 / 2
Indoor humidity
Auto
Allow dehumidifying with cooling
O
Control sequence
2 / 2

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C6_20-08 19
Connectivity. DHCP option automatically assigns afree IP address in the local network (do not use this option if
you connect your computer directly to the unit). If DHCP is not used, you can configure your PC network settings for
remote use via web browser: IP address and subnet mask.
“Status” line shows connection between AHU and internet:
• Disconnected – AHU is not connected to LAN or internet network
• No internet access – AHU is connected to LAN network and communicates with router, but internet is not
accessible.
• Connected – AHU has internet access.
You may also change other network parameters, if necessary: Gateway and BACnet ID.
In the „Modbus RTU“ line, it can be selected what device is connected to the terminals 1-2 of the C6 main board.
Additional control panel for AHU, building BMS system or external re damper controller can be used. If mentioned
terminals on the board are not used, do not change this setting and leave it as “Panel”.
Connectivity
IP address
192. 168. 0. 60
Subnet mask
255. 255. 0. 0
Gateway
192. 168. 0. 1
Status
Connected
DHCP
1/ 2
Modbus RTU
Panel
Fire dampers
Modbus
Connectivity
2/ 2
Modbus RTU
Modbus
BACnet ID
60
BACnet Port
47808
Modbus ID
254
RS-485
19200 8E1
Clean lters calibration. Resets dirty lter timer, after replacing air lters.
Komfovent Control. Here it is possible to reset user password, used for log-in to
Komfovent Control app, that controls AHU via smartphone.
Reset settings. Resets all the user settings and restores factory conguration.
Connectivity
Clean lters calibration
Komfovent Control
Advanced settings
2/ 2
Reset settings

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C6_20-08
20
2.5. Control Panel C6.2
2.5.1
2.5.3
2.5.6
2.5.2
2.5.4
2.5.5
Fig. 2.5. C6.2 panel view
2.5.1. Operating mode selection
In the control panel C6.2, the user can choose only one of the usual operation modes:
Away. The recommended choice when you are not at home or when there are fewer people inside the
premises than usual. The ventilation intensity will be 20%.
Normal. Recommended when there is the usual number of people inside the premises. The ventilation
intensity will be 50%.
Intensive. The recommended choice when there are more people inside the premises than usual. The
ventilation intensity will be 70%.
Boost. The recommended choice when it is necessary to quickly ventilate the premises. The ventilation
will run at its maximum intensity.
The operation mode parameters are preset at the factory. For the modication of each of the mode parameters,
if you have to change the temperatures or the air ows, you must have a connection to a computer network or the
Internet (see Sections 2.2, 2.3). Then the modications can be performed with a smart phone or computer.
For more about the choice of modes, read Section 2.4.3.
2.5.2. „ECO“
An energy-saving mode to minimize the power consumption of the air handling unit. See more details in Section
2.4.4..
2.5.3. AUTO mode
AUTO – automatic operation mode when the unit is operating and changing ventilation intensity based on the
chosen (pre-set) weekly operating schedule (for more details, see Section 2.4.6.2). If you connect air quality sensors to
the unit, then by pressing AUTO, the ventilation is automatically adjusted according to the current air pollution in the
room (see Section 2.4.6.3.).
2.5.4. Warning indicator
The indicator informs the user about dirty air lters or ventilation unit malfunctions.
2.5.5. Reset button
After the failure elimination or replacing the air lters, press the reset button and hold it for 5 seconds to remove
the fault message. If the fault message cannot be removed and the unit is not working, then follow the instructions in
the troubleshooting tables (Section 2.6.).
2.5.6. Turning the unit on/o
Pressing the OFF button turns o the air handling unit. To activate the unit, press the same on/o button, or
choose one of the modes directly.