nilan Compact P Mounting instructions

SOFTWARE INSTRUCTIONS
Compact P / Compact P Polar EK
CTS602 HMI BY NILAN
Version 4.10 - 29.10.2020
S24_Compact-P-EK_GB

2
Table of contents
Installation
Settings .........................................................................................................................................................................................................3
Ventilation ..............................................................................................................................................................................................3
Domestic hot water ..............................................................................................................................................................................3
Central heating ......................................................................................................................................................................................3
Software
User panel functions ...................................................................................................................................................................................4
Main screen elements ..........................................................................................................................................................................4
Settings options on the main screen .................................................................................................................................................5
Warning and alarms ..............................................................................................................................................................................6
Settings menu overview ......................................................................................................................................................................6
Installer access ......................................................................................................................................................................................7
Start-up settings .........................................................................................................................................................................................8
Language ................................................................................................................................................................................................8
Date/Time ..............................................................................................................................................................................................8
Ventilations settings ...................................................................................................................................................................................9
Turn on the unit .....................................................................................................................................................................................9
Operating function ................................................................................................................................................................................9
Alarm .................................................................................................................................................................................................... 10
Show data ............................................................................................................................................................................................ 10
Week program .................................................................................................................................................................................... 11
Central heating ................................................................................................................................................................................... 12
Domestic hot water ........................................................................................................................................................................... 14
After heating element ....................................................................................................................................................................... 14
Cooling ................................................................................................................................................................................................. 15
Air humidity ........................................................................................................................................................................................ 16
CO2 Control ......................................................................................................................................................................................... 17
Air exchange ....................................................................................................................................................................................... 18
Air filter ................................................................................................................................................................................................ 19
Temperature control ......................................................................................................................................................................... 20
Service settings ........................................................................................................................................................................................ 21
Password ............................................................................................................................................................................................. 21
User selection programe .................................................................................................................................................................. 21
User selection program 1 ................................................................................................................................................................. 22
User selection program 2 ................................................................................................................................................................. 23
Central heating ................................................................................................................................................................................... 25
Domestic hot water ........................................................................................................................................................................... 25
Air quality ............................................................................................................................................................................................ 26
Air exchange - Balancing .................................................................................................................................................................. 26
De-icing ................................................................................................................................................................................................ 27
Temperature control ......................................................................................................................................................................... 28
Supply air control ............................................................................................................................................................................... 28
Room temperature control .............................................................................................................................................................. 29
Restart fire .......................................................................................................................................................................................... 29
Restore settings ................................................................................................................................................................................. 29
Manual operation ............................................................................................................................................................................... 30
Modbus address ................................................................................................................................................................................. 30
Data log interval ................................................................................................................................................................................. 31
Theme .................................................................................................................................................................................................. 31
Main screen ......................................................................................................................................................................................... 32
Panel settings ..................................................................................................................................................................................... 32
Alarm list
Compact EK ................................................................................................................................................................................................ 33
Alarm list ............................................................................................................................................................................................. 33

3
Installation
Settings
Ventilation
How to set the unit.
This list is intended for the installer to get an overview of what settings to use in consultation with the user or the builder.
Domestic hot water
How to set the domestic hot water.
* If a safety valve with scald protection is installed, the temperature can be set > 65 °C, without risk of scalding.
Central heating
How to set the central heating.
Functions Settings
Days between filter changes Days:
Which ventilation level is set for basic ventilation Level:
Is low ventilation at low outdoor temperature desired? Yes/No Level:
At °C:
Is low ventilations at low humidity desired? Yes/No Level:
Level low humidity %:
Is high ventilation at high humidity desired? Yes/No Level:
Maximum time with high ventilation at high humidity Minutes:
Desired room temperature °C:
Should active cooling be activated Yes/No Offset cooling °C:
Is high ventilation level at cooling desired? Yes/No Level:
Is a cooker hood connected to the ventilation system Yes/No Level:
Functions Settings
What is the desired hot water temperature °C:
Should the electrical supplement be used and at what temperature Yes/No °C:
Max. temperature for scalding protection * °C:
Should the unit run automatic legionella treatment Yes/No Day:
Bypass offset activated for domestic hot water Yes/No °C:
Functions Settings
What is the desired settings Demand / Heating
Desired minimum supply flow temperature Yes/No °C:
Desired maximum supply flow temperature °C:
By which curve the control must regulate according to Level:
Should the curve be shifted so that it better suits the heat demand Yes/No °C:
What is the desired setting for the circulation pump Continuous / Energy

4
Software
User panel functions
Main screen elements
The main screen of the HMI user panel contains the settings options and the information that an operator mostly uses.
1. Shows the current room temperature in the house, measured via
the extract air
2. Shows the current air humidity. If a CO2 meter has been installed, it
will be shown next to air humidity
3. Shows the current fan speed level
4. Shows the current supply air temperature
5. Shows the current outdoor temperature measured via the outdoor
air intake
6. Shows the current discharge air temperature
7. Shows the menu icons listed below
8. Shows the mode icons listed below
9. Shows the hot water temperature
10. Shows the central heating temperature
11. Access to the settings menu which contains more settings options
Menu icones Operation icones
Stop icon
Indicates that the unit has stopped
Compressor icon
Indicates that the compressor is active
User selection icon
Indicates that the user selection function is active
Heating icon
Indicates that the unit is heating up the supply air via
the compressor or the after-heating element
Week program icon
Indicates that the week program function is active
Cooling icon
Indicates that the unit is cooling the supply air via
the compressor or the bypass
Alarm icon
Is displayed during alarms or warnings
Domestic hot water icon
Appears when the unit produces hot water. Light-
ning is displayed when the power supply is active
De-icing icon
Appears when the heat pump defrosts
Lightning icon
Appears when the EK module is operating and the
number next to it shows on which step it is operating
Lightning open icon
Appears when user option 2 is enabled.

5
Settings options on the main screen
The settings options which the user needs in daily life can all be controlled from the main screen of the panel.
If you press current room temperature, the set room tempera-
ture will be
displayed.
You can change the room temperature by using the up-and-
down arrows followed by the confirm icon (bottom right) or the
cancel icon (bottom left).
If you press current fan speed level, the set fan speed level will
be displayed.
You can change the fan speed level by using the up-and-down
arrows followed by the confirm icon (bottom right) or the cancel
icon (bottom left).
There may be a difference between set fan speed level and the
actual fan speed level as the control system will override the
set level, for instance, at high/low air humidity or during cooker
hood operation.
If you press the current hot water temperature, the set hot
water temperature will be displayed.
You can change the hot water temperature by using the up-
and-down arrows followed by the confirm icon (bottom right) or
the cancel icon (bottom left)
If you press the current supply flow temperature, the set sup-
ply flow temperature will be displayed.
You can change the supply flow temperature by using the up-
and-down arrows followed by the confirm icon (bottom right) or
the cancel icon (bottom left)

6
Warning and alarms
Settings menu overview
The settings menu is constructed to make it easy to navigate through.
If the ventilation unit is faulty or an error
occurs, there will be either a warning or
an alarm. The icon will appear in the top
right hand corner in the menu bar.
If you press the symbol, a brief descrip-
tion of the warning or the alarm will be
displayed.
You will find more detailed descriptions in
the "Alarm List" section of this document.
When the problem has been solved, you
can reset the warning or alarm by
pressing “Clear Alarm”.
A warning indicates that something requires attention, for instance that filters need changing.
The ventilation unit is in operation.
An alarm indicates a serious fault with the unit that is likely to require investigation by an expert.
The ventilation unit has stopped.
You navigate through the settings menu by pressing the arrow below or above.
If you want to access a menu, tap the text for that menu and it will open.

7
Installer access
Settings menus consist of 3 levels.
1. User level - Settings the user can access and customize
2. Service level - Settings that the installer needs to access in order to set the ventilation unit in relation to individual installation.
It requires expertise knowledge to select these settings. If the settings are not correct, the ventilation unit may not operate
properly and it may consume more energy than necessary. The unit may even get damaged.
3. Factory level - Only Nilan has access
The Service menu is located at the bottom of the User settings.
Tap the down arrow several times to get there. A password is required to access the Service menu.
You can set the password by using the up-or-down arrows fol-
lowed by the confirm icon (bottom right).

8
Start-up settings
Language
The ventilation unit is factory set to Danish language. You can change the texts to other languages.
>Language (DK - Sprog)
Date/Time
It is important to set date and time correctly. It makes it easier to localise errors indicated in an error report. When logging data, it is
important to be able to follow the history. The time is shown under “Date / Time” in the display.
> Date / Time
> Danish Description: Select the desired language in the user panel.
> Year Description: Select "Year" in the panel and then select the correct year.
> Month Description: Select "Month" in the panel and then select the correct month.
> Day Description: Select "Day" in the panel and then select the correct day.
> Hour Description: Select "Hour" in the panel and then select the correct hour.
> Minute Description: Select "Minute" in the panel and then select the correct amount
of minutes.

9
Ventilations settings
Turn on the unit
When the ventilations unit is powered, light will appear in the upper panel, but all functions are off. This is to prevent errors at the
installation.
The different functions of the ventilation unit, is activated in the settings menu “Operation”.
> Operation
Operating function
You can program the unit to operate in Auto, Heating or Cooling mode.
> Operating function
When the ventilation unit is off, this icon appears on the right top side of the main screen.
ATTENTION
It is important that the power is turned off, if you want to work with the electrical components in the ventilation unit.
ATTENTION
It is important that the ventilation unit is not turned off for long periods, as this could cause condensation problems in
the duct system.
> Operation Settings:
Standard setting:
Description:
Off / On
Off
The ventilation unit is from factory turned off, to prevent errors
at the installation.
It is also here the ventilation unit is turned off, when filter is
changed or service is made.
ATTENTION
The Heating and Cooling functions overrules the week program. If a week program has been set up, the mode will
automatically change to Auto at the next change in the week program.
> Operating function Settings:
Standard setting:
Description:
Auto / Cooling / Heating
Auto
Auto:
The unit operates in accordance with the set values.
Cooling:
The unit operates in accordance with the set values, but cooling
is possible in winter mode if the preconditions for cooling are
present.
Heating:
The unit operates in accordance with the selected values, but
the bypass damper cannot be opened and active cooling not be
activated even if the preconditions are present.

10
Alarm
In the “Alarm” menu item you can see warnings and alarms. This is also where you reset them once the problem has been solved.
> Alarm
Show data
You can access current operational data for the ventilation unit. This will allow you to check that the unit operates satisfactorily and
to identify the cause of potential alarms.
> Show data
If an alarm or a warning is active, the alarm icon will be displayed in the upper righthand corner of the control panel.
> Alarm number and name Description: Press the alarm to display a list of:
• Alarm ID-number
• Type of alarm
• Critical alarm or warning
(The alarm list will tell you how to proceed).
ATTENTION
As long as the problem has not been solved, the alarm or warning will remain active. When the problem has been solved,
you will be able to reset the alarm or warning by pressing "Clear alarm"
> Operating state Description: Shows the operating setting in which the unit is running.
> Bypass Description: Shows whether the bypass damper is open or closed.
> T1 Outdoor temperature Description: Shows the temperature before the pre-heating element.
> T2 Supply air Description: Show the supply air tempereture, if an after-heating element is
not installed.
> T4 Discharge Description: Shows the discharge air temperature.
> T5 Condenser Description: Shows the condenser temperature.
> T6 Evaporator Description: Shows the evaporator temperature.
> T7 Supply air Description: Shows the supply air temperature provided an after-heating
element has been installed.
> T10 Extract air/Room Description: Shows the current room temperature as measured in the
extract air.
> T11 Top hot water Description: Shows the current temperature in the top of the domestic hot
water tank. Controls the supplementary electric heating.
> T12 Bottom hot water Descripton: Shows the current temperature in the bottom of the domestic
hot water tank. Controls the compressor.
> T14 Supply flow Descripton: Shows the current supply flow temperature to central heating
> Air humidity Description: Shows the current air humidity in the house.
> CO2 Description: Shows the current CO22 level in the house (only if installed).
> Supply air fan Description: Shows the level at which the supply air fan is operating.
> Extract air fan Description: Shows the level at which the extract air fan is operating.
> Unit information Description: Select "Unit information" for more information.
> Unit type Description: Shows the name of the unit.
> Software version Description: Shows the installed software version.
> Panel software Description: Shows installed software version on the panel.

11
Week program
You can program the ventilation unit to run in accordance with specific settings at fixed times during the week via a week program.
> Week program
On the main screen in the top right side an icon will be displayed when the week program is active
> Select program Settings:
Standard setting:
Description:
Off / 1 / 2 / 3
Off
The control allows you to set 3 programs for different situa-
tions e.g.:
• Normal operation
• Holliday operation
> Edit program Description: The selected week program is now active and can be edited.
> Monday Settings: Here weekday is selected.
>Function 1 Settings: Here you select the function you want to edit.
> Start time Settings:
Standard setting:
Description:
Hours and minutes
6:00
Set the time for the program to start.
The program will run until the next change in the week program.
> Ventilation Settings:
Standard setting:
Description:
Level 1 / Level 2 / Level 3 / Level 4 / Off
Level 3
Select the desired fan speed level here.
> Temperature Settings:
Standard setting:
Description:
5  40 °C
22 °C
Set the desired room temperature here.
The same settings are made for
all functions.
> Reset program Settings: You can reset the program by selecting the “Approve” icon.

12
Central heating
Possibility of room heating settings.
> Central heating
> Settings Settings:
Standard setting:
Description:
Off / Heating / Demand
Demand
Off: Room heating is off.
Heating: Constant heating in relation to min./max.
Demand:The flow temperature is automatically
controlled by the curve setting
> Heat Description: Constant heating of the supply air via PI-regulation in
accordance with the room temperature
> Min. flow temperature Settings:
Standard setting:
Description:
5  40 ºC
20 ºC
Here the minimum flow temperature is set.
> Max. flow temperature Settings:
Standard setting:
Description:
20  50 ºC
40 ºC
Here the minimum flow temperature is set
> Outdoor temperature
compensation
Settings:
Standard setting:
Description:
0  10
10
Choose which curve the control system is to be
regulated by
> Offset curve Settings:
Standard setting:
Description:
-15  10 ºC
0 ºC
You can shift the curve to make it fit the heating
requirements of the dwelling
> Cirkulation pump Settings:
Standard setting:
Description:
Continuous / Energy
Continuous: The pump is running constantly
Energy: The pump runs when needed
> Demand Description: Curve control of the supply flow temperature has been
selected, where the supply flow temperature to the floor
heating is controlled by the outdoor temperature.
> Min. flow temperature Settings:
Standard setting:
Description:
5  40 ºC
20 ºC
Minimum flow temperature, overrides the curve control
> Max. flow temperature Settings:
Standard setting:
Description:
20  50 ºC
40 ºC
Maximum flow temperature, overrides the curve control
> Outdoor temperature
compensation
Settings:
Standard setting:
Description:
0  10
10
Choose which curve the control system is to be
regulated by
> Offset curve Settings:
Standard setting:
Description:
-15  10 ºC
0 ºC
You can shift the curve to make it fit the heating
requirements of the dwelling
> Offset temp. regl. Settings:
Standard setting:
Description:
0  2 ºC
0 ºC
It is possible to shift the set point so that the central heating
switches on later
> Delay Settings:
Standard setting:
Description:
0  30 minutes
10 minutes
Set a chosen delay for when the after-heating element
should start, once a need for heating has been
established.
> Cirkulation pump Settings:
Standard setting:
Description:
Continuous / Energy
Continuous: The pump is running constantly
Energy: The pump runs when needed

13
Curve control
The flow temperature is automatically adjusted according to a curve.
Max. temperature
Min. temperature
Central heating temperature
Outdoor temperature
20
-20-15-10-505101520
30
40
50
60
70
80
90
100
1
2
3
4
6
7
8
9
10
5

14
Domestic hot water
Settings for hot water production have been set at the factory, but it may be necessary to adjust them to match the user´s needs.
> Domestic hot water
After heating element
This menu item is only visible if an electric or water after heating element is installed and activated under Service settings.
If it is desired to control the supply air temperature it is necessary to install an after heating element. That allow you to control the sup-
ply air temperature independently of the outdoor temperature. The after heating element can also contribute to heating the home.
An electric or water heating element can be ordered for installation in the supply air duct.
> After heating element
> Electric supplement heater hot
water
Settings:
Standard setting:
Description:
Off / 5  85 ºC
30 ºC
Off: The electricity supplement is de-activated by the user.
5 - 85 ºC: Indicates below which temperature (T11) the
electricity supplement should help by heating the hot water.
> Hot water temperature Settings:
Standard setting:
Description:
Off / 5  60 ºC
45 ºC
Off: The hot water production is switched off by the user.
5 - 60 ºC: Indicates below which temperature (T12) the
compressor must produce hot water.
> Scalding protection Settings:
Standard setting:
Description:
60  80 ºC
65 ºC
When the unit is in heating or cooling mode, heat will simultane-
ously be deposited in the hot water tank.
To prevent the hot water from getting too hot and scalding the
user, a limit of 65ºC has been inserted. When the temperature in
the hot water tank reaches 65 ° C, cooling or heating the supply
air stops.
NB! If a scalding valve is connected to the bottom of the hot
water tank, the setting can be changed up to 80ºC. In this way,
the capacity for cooling and heating of the supply air is
increased.
ATTENTION
An after heating element is not standard, but can be purchased as an accessory, and can also be retrofitted if desired.
> Activate Settings:
Standard setting:
Description:
Off / On
Off
You can turn the after-heating on or off here.

15
Cooling
The unit can cool the dwelling via bypass-cooling and/or active cooling via the heat pump. For the unit to switch to cooling mode it must
operate in summer mode, or you must activate cooling in “Operating function”.
Bypass cooling:
If the room temperature, measured in the extract air, is higher than the cooling setpoint -2 ºC and the outdoor temperature is below
the room temperature, the bypass will open and commence bypass cooling.
The bypass will close again once the room temperature reaches the desired level + 1 ºC
If the outdoor temperature exceeds the room temperature and cooling becomes necessary, the bypass will not open. However, the
unit will start cooling recovery via the heat exchanger where the outdoor air is cooled by the extract air.
Active cooling:
If the room temperature (measured in the extract air) is higher than the desired room temperature + the cooling setpoint, the compres-
sor will start up and begin active cooling of the supply air. The compressor will stop when the room temperature falls below the cooling
setpoint -1ºC.
> Cooling
*When domestic hot water is needed, the heat pump will run at a higher level, and cannot simultaneously perform active cooling during
that period. However, it will open the bypass damper if cooling is required.
If cooling is to have a higher priority than hot water, the unit will cool the supply air and store the heat in the hot water tank during that
period. The domestic hot water will be heated, but not as quickly as usual in hot water production.
> Cooling setpoint Settings:
Standard setting:
Description:
Off / +1 / +2 / +3 / +4 / +5 / +7 / +10 ºC
Off
Off: Active cooling is deactivated.
Set point + X ºC: Indicates when active cooling is to start. The
set point for desired room temperature is selected on the front
of the panel.
> Ventilation in cooling mode Settings:
Standard setting:
Description:
Off / 2 / 3 / 4
Off
Off: The fan speed level does not change when the unit switches
to cooling mode.
Level 2-4: Select the fan speed level you want the unit to switch
to when in cooling mode. This happens already at bypass cool-
ing.
>Priority Settings:
Standard setting:
Description:
Water / Supply air
Water
This indicates whether the cooling function is to have a higher
priority than production of domestic hot water*.

16
Air humidity
The primary purpose of ventilation is to extract humidity from the house so it does not damage the building, and to achieve a good in-
door climate. During long periods with sub-zero temperatures, air humidity in the house may fall to a level that is critical for the build-
ing and for the indoor climate. Wooden floors, furniture and walls can be damaged by very dry air, which also whirls up dust, resulting
in a poor indoor climate.
This is rectified by an integrated humidity control system that maintains good, relative air humidity. When the average air humidity in
the house falls below a set level (default set at 30%), ventilation may be reduced. It will typically only be for a short period of time. This
will help avoid further reduction of the air humidity in the house.
The humidity control system also has a function that allows increased ventilation, should the air humidity increase, for instance when
having a bath. The risk of mould growth in the bathroom is reduced, and the bathroom mirror will rarely steam up.
The humidity control system follows the average air humidity level measured over the previous 24 hours. In this way the system au-
tomatically adapts to summer and winter conditions.
> Air humidity
> Vent.low humidity Settings:
Standard setting:
Description:
Level 1 / Level 2 / Level 3 / Level 4 / Off
Level 1
When the current humidity drops below the low humidity level,
the ventilation unit switches to the set ventilation level.
Off means that the ventation at low humidity is de-activated.
> Low humidity level Settings:
Standard setting:
Description:
15  45%
30%
When current humidity below this value falls, the ventilation
level set above is activated.
> Vent.high humidity Settings:
Standard setting:
Description:
Level 2 / Level 3 / Level 4 / Off
Level 3
At high humidity levels, for instance when having a bath, the
unit changes to the set fan speed level.
Off means that the function Ventilation at high humidity is de-
activaded.
> Max time high humidity Settings:
Standard setting:
Description:
1  180 min. / Off
60 min.
The function “High humidity” stops when actual humidity falls
below 3% above the average air humidity.
However, this time limit will stop operation if it fails within the
set time period.
Off means that the function Max. time at high humidity is de-
activated.

17
CO2 Control
This menu is only displayed if a CO2-sensor has been installed, and the function has been chosen under Service settings.
If the number of people using a building varies considerably, controlling ventilation through the CO2 level in the extract air may be a
good solution. This function is often used in offices and schools where use varies greatly during the day and during the week.
> CO2
ATTENTION
A CO2 sensor is not a standard part of all ventilation units, but may be purchased as an accessory.
> Vent.high CO2 level Settings:
Standard setting:
Description:
Level 2 / Level 3 / Level 4 / Off
Level 3
Here you set the fan speed level at which the unit is to operate
at high CO2 level.
Off means the this function is de-activated.
> High CO2 level Settings:
Standard setting:
Description:
650  2500 ppm
800 ppm
Here you set the CO2 level at which the unit is to switch to high
fan speed level.
> Normal CO2 level Settings:
Standard setting:
Description:
400  700 ppm
600 ppm
Here you set the CO2 level at which the unit is to switch to
normal fan speed level.

18
Air exchange
Low humidity in the dwelling can be prevented by reducing ventilation at low outdoor temperatures. This function can be used in
countries with regular sub-zero temperatures and at high altitudes where the outdoor air is very dry.
This function can also be used at cold outdoor temperatures if no after-heating element has been installed, and the supply air feels too
cold.
> Air exchange
> Type of ventilation Settings:
Standard setting:
Description:
Water / Comfort / Energy
Comfort
Water: Here, the supply fan stops as long as heating the
domestic water is needed.
Energy: Here, energy-optimized operation is ensured.
Comfort: Here, the air change is always balanced.
> Comfort Description: Comfort has been chosen, where the ventilation level on supply
air and extract air is always the same.
> Low temp. compr. start Settings:
Standard setting:
Description:
0  -15 °C / Off / 0  15 °C
Off
Here it is specified whether the heat pump should start at a low
outdoor temperature, even if there is no heat demand.
Off means the function is deactivated.
> winter low vent. Settings:
Standard setting:
Description:
Level 1 / Level 2 / Level 3 /Off
Off
Here you select the fan speed level at which the unit is to
operate at low outdoor temperatures.
Off means the function is deactivated.
> Level winter low Settings:
Standard setting:
Description:
-20  40 °C
0 °C
Here you indicate the outdoor temperature at which
operation is to change to "Winter low"
> Water Description: Water is selected, which means that the supply fan stops as
long as there is a need to heat the domestic water. If the system
is in cooling mode, the supply air does not stop.
> Low temp. compr. start Settings:
Standard setting:
Description:
0  -15 °C / Off / 0  15 °C
Off
Here it is specified whether the heat pump should start at a low
outdoor temperature, even if there is no heat demand.
Off means the function is deactivated.
> winter low vent. Settings:
Standard setting:
Description:
Level 1 / Level 2 / Level 3 /Off
Off
Here you select the fan speed level at which the unit is to
operate at low outdoor temperatures.
Off means the function is deactivated.
> Level winter low Settings:
Standard setting:
Description:
-20  40 °C
0 °C
Here you indicate the outdoor temperature at which
operation is to change to "Winter low"
> Energy Description: Energy has been selected, which ensures energy-optimized
operation by regulating the supply air volume in relation to the
set temperature curve.
> Low temperature curve Settings:
Standard setting:
Description:
15  46 °C
38 °C
When curve controlled, the supply air will be temperate
at a time, as a ventilation step is regulated down or up.
Min. curve is level 1.
> High temperature curve Settings:
Standard setting:
Description:
39  60 °C
50 °C
When curve controlled, the supply air will be temperate
at a time, as a ventilation step is regulated down or up.
Max. curve is level 4.

19
Condenser curve control
Supply air [%]
Condenser temperature [°C]
Air filter
From factory, the filter alarm has been set to signal filter replacement every 90 days. You can set the timer to fit the level of pollution
in the area where the ventilation unit has been installed.
If someone in the household has pollen allergies, it is recommended that you install a pollen filter in the outdoor air intake.
> Air filter
> Low temp. compr. start Settings:
Standard setting:
Description:
0  -15 °C / Off / 0  15 °C
Off
Here it is specified whether the heat pump should start at a low
outdoor temperature, even if there is no heat demand.
Off means the function is deactivated.
> winter low vent. Settings:
Standard setting:
Description:
Level 1 / Level 2 / Level 3 /Off
Off
Here you select the fan speed level at which the unit is to
operate at low outdoor temperatures.
Off means the function is deactivated.
> Level winter low Settings:
Standard setting:
Description:
-20  40 °C
0 °C
Here you indicate the outdoor temperature at which
operation is to change to "Winter low"
ATTENTION
It is important to change the filters regularly and when needed. Dirty filters reduce the efficiency of the ventilation unit
and result in a poorer indoor climate and higher power consumption.
> Filter alarm Settings:
Standard setting:
Description:
None /30 / 60 / 90 / 180 / 360
90 days
The number of days between filter changes can be set as
required.
36
0
20
40
60
80
100
120
38
43
3
40 42 44 46 48 50 52
1
2
2

20
Temperature control
If you have not installed an after-heating element, use the settings to control the bypass damper.
It is necessary to install an after-heating element if you want to control the supply air temperature and for it to contribute towards the
heating of the dwelling. An after-heating element allows you to control the supply air temperature, regardless of the outdoor temper-
ature.
You can install an external electrical or water after-heating element in the supply air duct.
> Temp. regulation
ATTENTION
During periods when heating is not required in the dwelling, the supply air temperature may fall below the minimum
temperature.
> Min. supply air summer Settings:
Standard setting:
Description:
5  16 °C
14 °C
Here you set the supply air temperature that you want the
ventilation unit to be able to provide, as a minimum, during
summer, when the unit is in heating mode.
> Min. supply air winter Settings:
Standard setting:
Description:
14  30°C
16 °C
Here you set the supply air temperature that you want the
ventilation unit to be able to provide, as a minimum, during
winter, when the unit is in heating mode.
NB: Only possible if an after-heating element has been
installed.
> Max. supply air summer Settings:
Standard setting:
Description:
16  30°C
30 °C
Here you set the supply air temperature that you want the ven-
tilation unit to be able to provide, as a maximum, when heating
is required.
NB: This option is only shown if an after-heating element has
been installed and activated.
> Max. supply air winter Settings:
Standard setting:
Description:
30  50 °C
30°C
Here you set the supply air temperature that you want the unit
to be able to provide, as a maximum, during winter.
NB: This option is only shown if an after-heating element has
been installed and activated.
> Summer change Settings:
Standard setting:
Description:
5  30 °C
12 °C
Here you set the temperature for the shift between summer
and winter operation.
• If the outdoor temperature is higher, the unit will operate in
summer mode
• If the outdoor temperature is lower, the unit will operate in
winter mode