User settings

Setting the ventilation unit

Switch off the ventilation device

If you need to open the doors of the ventilation unit in connection with maintenance or changing filters, do not forget to switch off the ventilation unit. You do this under the menu item "Operation".

When the ventilation unit is switched off, this icon is displayed on the main control panel screen in the top right corner.

Before touching electrical installations, make sure the power supply is switched off.

It is important that the ventilation unit is not switched off for long periods, as this can cause problems with condensation in the duct system.

DEVICE ON/OFF
Device on/off	Settings	Off / On
Device on/off	Description	The ventilation unit should be switched off before opening the doors during maintenance.

Operating function

You can set the unit to "Auto", "Heating" or "Cooling".

The "Heating" and "Cooling" functions have priority over the weekly programme. If a weekly programme is activated, the mode automatically switches to "Auto" the next time the weekly programme changes.

Operating function
Operating function	Settings	Auto - Cooling - Heating
	Standard	Auto
	Description	Auto: The device operates according to the selected values. Cooling: The device operates according to the selected values. However, cooling is possible in winter mode if the requirements for cooling are present. Heating: The unit operates in accordance with the selected values, but the bypass valve cannot be opened and active cooling cannot be activated, even if the requirements for cooling are present.

Alarm

Warnings and alarms can be read under the "Alarm" menu item. This is also where you reset them once the problem is resolved.

If an alarm or alert is active, the alarm icon appears in the top-right corner of the control panel.

Alarm
Alarm number and name	Description	When you press the alarm, the following information appears: - Alarm ID number - Alarm type - Critical alarm or warning (The alarm list informs you how to act).

Until the problem is resolved, the alarm or alert remains active. When the problem is solved, you can reset the alarm or alert by pressing "Clear alarm".

Show data

You can read the current operating data of the ventilation unit. This allows you to check the proper operation of the unit and identify the cause of any alarms.

Show data
Operating state	Description	Indicates which operating mode the ventilation unit is in.
Bypass	Description	Indicates whether the bypass valve is open or closed.
Anode	Description	Indicates whether the anode is OK. If it is faulty, it must be replaced.
T1 Outside air	Description	Shows the outside temperature before pre-heating.
T2 Air supply	Description	Displays the supply air temperature if no post-heating element is installed.
T4 Blowout	Description	Shows the discharge temperature in the exchanger.
T5 Capacitor	Description	Displays the condenser temperature.
T6 Evaporator	Description	Displays evaporator/exhaust air temperature.
T7 Air supply	Description	Shows the temperature of the supply air if a post-heating element is installed.
T10 Return air space	Description	Displays the current room temperature measured in the return air.
T11 Top hot water	Description	Displays the current temperature at the top of the hot water tank. Controls additional electric heating.
T12 Soil hot water	Description	Displays the current temperature at the bottom of the hot water tank. Controls the heat pump.
Humidity	Description	Shows the current humidity level in the house.
CO2 level	Description	Shows the current CO2 level in the house (only if installed).
Supply fan	Description	Displays the current speed level of the supply air fan.
Extractor fan	Description	Displays the current extraction fan speed level.
Information about the unit	Description	Press for more information about the ventilation unit.
Unit type	Description	Shows which type of ventilation device it is.
Software version	Description	Displays the software version of the ventilation unit.
Panel software	Description	Displays the software version of the control panel.

Date / time

It is important to set date and time correctly. It makes it easier to detect possible failures when an error is reported. When logging data, it is important to be able to track history. You set the time in the settings menu.

Date/time
Year	Description	Press "Year" on the panel and select the current year.
Month	Description	Press "Month" on the panel and select the current month.
Bye	Description	Press "Day" on the panel and select the current day of the week.
Hour	Description	Press "Hour" on the panel and select the current hour of the day.
Minute	Description	Press "Minute" on the panel and select the current minute.

Weekly programmes

A weekly programme allows you to programme the ventilation unit to run at fixed times of the day and week according to certain settings.

On the main control panel screen, in the top right corner, the Week Programme icon appears when it is active.

Weekly programme
Select weekly programme	Settings	OUT - 1 - 2 - 3
	Standard	OUT
	Description	The controls allow you to set 3 programmes for different situations, e.g: - Normal operation - holiday operation
Edit programme	Description	The selected weekly programme is now active and can be edited.
Monday	Settings	Here, the weekday is selected.
Function 1	Settings	Here you select the function you want to edit.
Start time	Settings	Hours and minutes
	Standard	6:00
	Description	Set the time at which the programme starts. The programme runs with the set values until the next change in the Week programme.
Ventilation	Settings	Level 1 - Level 2 - Level 3 - Level 4 - OFF
	Standard	Level 3
	Description	Select the desired level of fan speed here.
Temperature	Settings	5 to 40 °C
	Standard	22 °C
	Description	Set the desired room temperature here.
Copy for the next day	Description	Once the values for the Monday programme are set, it is possible to copy them to the next day.
The same settings are made for all functions.
Reset programme	settings	You can reset the programme by selecting the "Approve" icon.

Domestic hot water

The settings for hot water production are set at the factory, but it may be necessary to adjust them according to the user's needs.

Domestic hot water
Additional electric heating hot water	Settings	OFF \| 5 to 85 °C
	Standard	30 °C
	Description	OFF: The supplementary electric heating is switched off by the user. 5 - 85 ºC: Indicates below which temperature (T11) the supplementary electric heater should help heat domestic hot water.
Hot water temperature	Settings	OFF - 5 to 60 °C
	Standard	45 °C
	Description	Off: Hot water production is switched off by the user. 5 - 60 ºC: Indicates below which temperature (T12) the compressor should produce hot water.
Day for legionella treatment	Settings	NO - Mon - Thu - Wed - Fri - Sat - Sun
	Standard	NO
	Description	This specifies whether the unit should perform weekly legionella treatment.*
Legionella temperature	Settings	50 to 70 °C
	Standard	65 °C
	Description	Legionella treatment temperature

* If a weekday is selected, the legionella function will start at 1:00 at night and heat the domestic hot water to 65 °C. The function only works if the additional electric heating is activated.

Reheating element

This menu item is only available if an electric reheating element or a water reheating element is installed, and if it is activated in "Service settings".

An after-heating element is not included as standard. However, you can order it as an extra and it can also be retrofitted.

If you want to be able to control the temperature of the supply air, you should install a post-heating element. This allows you to control the temperature of the supply air regardless of the outside temperature. The post-heating element can also contribute to heating the home.

Reheating element
Switch on / switch off	Settings	OFF - ON
	Standard	OUT
	Description	Here the user can switch on and off the reheating element.

Cooling

The unit can cool the house via bypass cooling and/or active cooling via the heat pump. To put the unit in cooling mode, it must operate in summer mode, or you must activate cooling in the "Operation mode".

Bypass cooling: If the room temperature, measured in the return air, is higher than the cooling set point -2 ºC and the outside temperature is lower than the room temperature, the bypass will open and start bypass cooling.

The bypass closes again as soon as the room temperature reaches the desired level +1 ºC.

If the outdoor temperature is higher than the room temperature and cooling becomes necessary, the bypass will not open. However, the unit will start the recovery of cooling through the heat exchanger where the outdoor air is cooled by the return air.

Active cooling: If the room temperature (measured in the return air) is higher than the target room temperature + the cooling setpoint, the compressor starts and the supply air starts actively cooling. The compressor stops when the room temperature falls below the cooling setpoint -1ºC.

Cooling
Cooling set point	Settings	OFF - +1 - +2- +3 - +4 - +5 - +7 - +10 ºC
	Standard	OUT
	Description	Off: Active cooling is disabled. Set point + X ºC: Specifies when active cooling should start. The set point for the desired room temperature is selected on the front of the panel.
Ventilation in cooling mode	Settings	OUT - 2 - 3 - 4
	Standard	OUT
	Description	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 already happens during bypass cooling.
Priority	Settings	Water - Air supply
	Standard	Water
	Description	This indicates whether the cooling function should have a higher priority than domestic hot water production. *

* When domestic hot water is needed, the heat pump gives priority to domestic hot water production and does not cool. However, it opens the bypass valve when cooling is required.

If cooling is given 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. Domestic hot water will be heated, but not as quickly as usual for hot water production.

Humidity control

The main purpose of ventilation is to remove moisture from the house to avoid damaging the building, and to achieve a good indoor climate. During long periods with sub-zero temperatures, humidity in the house can drop to levels that are critical for the building and indoor climate. Wooden floors, furniture and walls can be damaged by very dry air, which also blows up dust, resulting in a poor indoor climate.

This is remedied by an integrated humidity control system that maintains good, relative humidity. When the average humidity in the house drops below a certain level (set at 30% by default), ventilation can be reduced. This will usually only be for a short period of time. This helps prevent the humidity in the house from falling further.

The humidity control also has a function that allows more ventilation should the humidity increase, for example when taking a bath. The risk of mould in the bathroom is reduced and the bathroom mirror will rarely steam up.

Humidity control tracks the average humidity level measured over the past 24 hours. Thus, the system automatically adjusts to summer and winter conditions.

Humidity control
Vent. low humidity	Settings	Level 1 - Level 2 - Level 3 - OFF
	Standard	Level 1
	Description	When the current humidity drops below the low humidity level, the ventilation unit switches to the set ventilation level. OFF means venting at low humidity is disabled.
Low humidity	Settings	15 to 45%
	Standard	30%
	Description	When the current humidity falls below this value, the ventilation level set above is activated.
Vent. high humidity	Settings	Level 2 - Level 3 - Level 4 - OFF
	Standard	Level 3
	Description	In case of high humidity, e.g. when bathing, the unit switches to the set fan speed. Off means that the High Humidity Ventilation function is disabled.
Max. time high humidity	Settings	1 to 180 min. - OFF
	Standard	60 min.
	Description	The "High Humidity" function stops when the actual humidity is less than 3% above the average humidity. However, this time limit will stop operation if it fails within the set time. Off means the Max time at high humidity function is not activated.

CO2 monitoring

This menu is only displayed if a CO2 sensor is installed and the function is selected under Service settings.

If the number of people using a building varies widely, controlling ventilation via the CO2 level in the exhaust air can be a good solution. This feature is often used in offices and schools where usage varies widely throughout the day and week.

A CO2 sensor is not a standard part of all ventilation units, but can be purchased as an accessory.

CO2 monitoring
Vent. high CO2	Settings	Level 2 - Level 3 - Level 4 - OFF
	Standard	Level 3
	Description	Here you set the fan speed at which the unit should operate at high CO2 levels. OFF means this function is disabled.
High CO2 level	Settings	650 to 2500 ppm
	Standard	800 ppm
	Description	Here you set the CO2 level at which the unit should switch to a higher fan stage.
Normal CO2 level	Settings	400 to 700 ppm
	Standard	600 ppm
	Description	Here you set the CO2 level at which the unit should switch to normal fan speed level.

Air exchange

You can prevent low humidity in the home by reducing ventilation during low outdoor temperatures. This function is useful, for example, in countries with regular frosts or at high altitudes in the mountains where the outside air is very dry.

Air exchange
Ventilation type	Settings	Water - Comfort - Energy
	Standard	Comfort
	Description	Water: Here, the supply air fan stops working as long as sanitary water heating is required. Energy: This is where operation is optimised. Comfort: Here, air exchange is always balanced.
Comfort	Description	You have selected comfort where the fan speed for supply and return air is always the same.
Low temp. compr. start	Settings	0 to -15 °C - OFF - 0 to 15 °C
	Standard	OUT
	Description	Here you specify whether the heat pump should start up at low outside temperatures, even if no heating is required. OFF means the function is disabled.
Level winter low	Settings	Level 1 - Level 2 - Level 3 - OFF
	Standard	OUT
	Description	Here you specify the fan speed level at which you want the ventilation unit to operate at low outdoor temperatures. OFF means the function is disabled.
Temperature winter low	Settings	-20 to 10 °C
	Standard	0 °C
	Description	Here you specify the outside temperature at which you want the "Winter low" function to be activated.
Water	Description	You have selected Water, which means that the supply air fan stops as long as water is heated for domestic use. When the appliance is in cooling mode, the supply air does not stop.
Low temp. compr. start	Settings	0 to - 15 °C - OFF - 0 to 15 °C
	Standard	OUT
	Description	Here you specify whether the heat pump should start up at low outside temperatures, even if no heating is required. OFF means the function is disabled.
Level winter low	Settings	Level 1 - Level 2 - Level 3 - OFF
	Standard	OUT
	Description	Here you specify the fan speed level at which you want the ventilation unit to operate at low outdoor temperatures. OFF means the function is disabled.
Temperature winter low	Settings	-20 °C to 10 °C
	Standard	0 °C
	Description	Here you specify the outside temperature at which you want the "Winter low" function to be activated.
Energy	Description	You have chosen Energy, which ensures energy-optimised operation by controlling the supply air quantity against the set temperature curve.
Low temperature curve	Settings	15 °C to 46 °C
	Standard	38 °C
	Description	With "curve control", the supply air will always be constant as it is controlled with a fan speed up or down. Min. curve is level 1.
High temperature curve	Settings	39 °C to 60 °C
	Standard	50 °C
	Description	With "curve control", the supply air will always be constant as it is controlled with a fan speed up or down. Max curve is level 4.
Low temp. compr. start	Settings	0 °C to -15 °C - OFF - 0 to 15 °C
	Standard	OUT
	Description	Here you specify whether the heat pump should start up at low outside temperatures, even if no heating is required. OFF means the function is disabled.
Level winter low	Settings	Level 1 - Level 2 - Level 3 - OFF
	Standard	OUT
	Description	Here you specify the fan speed level at which you want the ventilation unit to operate at low outdoor temperatures. OFF means the function is disabled.
Temperature winter low	Settings	-20 to 10 °C
	Standard	0 °C
	Description	Here you specify the outside temperature at which you want the "Winter low" function to be activated.

Capacitor curve control

Filter alarm

It is important to change the filters regularly and when necessary. Dirty filters reduce the efficiency of the ventilation unit and lead to a worse indoor climate and higher energy consumption.

From the factory, the filter alarm is set to indicate filter replacement every 90 days. You can adjust the timer according to the level of contamination in the area where the ventilation unit is installed.

If someone in the household has a pollen allergy, it is advisable to install a pollen filter in the outdoor air intake.

Filter alarm
Days to change	Settings	NONE - 30 - 60 - 90 - 180 - 360
	Standard	90 days
	Description	The number of days between filter changes can be set as required.

Temperature control

If you have not installed an after-heating element, use the settings to control the bypass valve.

It is necessary to install an after heater if you want to control the temperature of the supply air and if you want it to contribute to heating the home. With an after heater, you can control the temperature of the supply air regardless of the outside temperature.

You can install an external electric or water post-heating element in the air supply duct.

During periods when heating is not required in the home, the supply air temperature may drop below the minimum temperature.

Temperature control
Min. supply air summer	Settings	5 to 16 °C
	Standard	14 °C
	Description	Here you set the minimum supply air temperature the ventilation unit should be able to deliver during summer, when the unit is in heating mode.
Min. supply air winter	Settings	14 to 22 °C
	Standard	16 °C
	Description	Here you set the minimum supply air temperature that the ventilation unit should be able to deliver in winter when the unit is in heating mode. NB: Only possible if a reheater is installed.
Max. supply air summer	Settings	5 to 50 °C
	Standard	35 °C
	Description	Here, you set the supply air temperature that the ventilation unit should be able to deliver maximum when heating is required. Note: This option is displayed only if an after heater is installed and activated.
Max. supply air winter	Settings	5 to 50 °C
	Standard	35 °C
	Description	Here, you set the supply air temperature that the unit should be able to deliver maximum in winter. Note: This option is displayed only if an after heater is installed and activated.
Summer/winter service	Settings	5 to 30 °C
	Standard	12 °C
	Description	Here you set the temperature for switching between summer and winter operation. - If the outside temperature is higher, the unit operates in summer mode. - When the outdoor temperature is lower, the unit operates in winter mode.

Language

The default language for the ventilation unit is Danish. You can change the texts to other languages in the settings menu.

Language
Dansk	Description	Select the desired language on the panel.