Genvex OPTIMA 270 User manual

OPERATING
INSTRUCTIONS
OPTIMA 270

2
TABLE OF CONTENTS
1. Installation.............................................................................................................................................................................3
2. Programming the Optima 270 controller...................................................................................................................5
3. Displays...................................................................................................................................................................................6
4. Start-up ..................................................................................................................................................................................8
5. Controller menu...................................................................................................................................................................9
6. Controller settings ..........................................................................................................................................................10
7. Further explanations of humidity and district heating control ......................................................................21
8. Maintenance.......................................................................................................................................................................22
9. Troubleshooting................................................................................................................................................................23

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1. INSTALLATION OF OPTIMA BASIC
1.1 Installation
Installation of the control panel The control panel is
designed to be mounted onto a flat wall.
1.2 Mounting
Find the location on the wall where you will fix the control
panel and mark the screw-hole positions. A min. of two
screws must be used to fix the display enclosure to the wall.
Drilling of holes, hole size and the corresponding screws for
fixing the panel depends on the wall material.
When the display enclosure has been securely installed to
the wall. Take the Optima Basic display which comes with a
preinstalled wire connected and lead the wire through the
opening in the enclosure as shown on the picture.
Fix the cable to the enclosure with a cable tie as shown to
prevent the cable from being pulled out of the terminal on
the display.
NOTE: if the preinstalled 1,8 meter Optima Basic cable
length is not sufficient, it is possible to replace this with a 4
wire twisted pairs 0,25 mm2 cable with a maximum length
of 50 meters.
Fix the control panel to the enclosure using 4 screws as
indicated on the picture.
Complete the installation by carefully clicking the plastic
cover on top of the enclosure as indicated on the picture.
Note: the display can be flush mounted in the wall by using
an integrated euro norm socket.
To remove the display unclip the plastic cover and remove
screws.
For additional information on connecting the control panel
to Optima 270 – please refer to the electrical diagram in
the installation manual
Safety information
This appliance can be used by children aged from 8 years
and above and persons with reduced physical, sensory or
mental capabilities or lack of experience and knowledge if
they have been given supervision or instruction concerning
use of the appliance in a safe way and understand the
hazards involved. Children shall not play with the appliance.
Cleaning and user maintenance shall not be made by
children without supervision. Rights to make any design or
technical modifications are reserved.
Important information

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1.1 Installation
Installation of the control panel The control panel is
designed to be mounted onto a flat wall.
1.2 Mounting
Find the location on the wall where you will fix the control
panel and mark the screw-hole positions. A min. of four
screws must be used to fix the display fixture to the wall.
Drilling of holes, hole size and the corresponding screws for
fixing the panel depends on the wall material.
When the display fixture has been securely installed to the
wall. Take the Optima Touch display which comes with a
preinstalled wire connected and clip the display carefully
on the fixture. Ensure that the cable is carefully positioned
as indicated on the picture before fitting the display.
NOTE: if the preinstalled 1,8 meter length is not sufficient,
it is possible to replace this with a 4 wire twisted pairs 0,25
mm2 cable with a maximum length of 50 meters.
To remove the display , carefully push the plastic clip
(locking mechanism) as indicated on the picture.
For additional information on connecting the control panel
to Optima 270 – please refer to the electrical diagram in
the installation manual
1. INSTALLATION OF OPTIMA TOUCH

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2. PROGRAMMING THE OPTIMA 270
CONTROLLER
The control system comes factory-preset, which means
that the unit can be put into operation without changing the
operating settings. The factory setting is only a basic
setting that can be adapted to the operating desires and
demands for the dwelling in question to make it possible to
achieve optimal utilisation and operation for the system.
Depending on the product configuration it will be possible
to either connect the Optima displays directly to the I/O
connectors outside of the product (connectors marked with
“display”) or directly on the PCB.
The I/O connection interface includes terminals for
connecting both Modbus Master (for example building
management systems) and Modbus Slave devices (for
example district heating- or fire box PCB). To uncover the
terminals, remove the dust protecting sticker gently.
2.1 Installations with no display interface
2.1.1. Connect an Optima Touch display to the Optima 270
and adjust settings as necessary. Remove the Optima Touch
display when the programming has been completed. The
Genvex ventilation unit will continue to run according the
the newly set parameters.
2.1.2 Use the Genvex PC tool to adjust the controller
parameters. Connect a laptop to the controller via the
Optima Basic or Touch display using the display as
controller interfaces or connect directly to the micro usb
connector on the PCB.
The Optima Basic og Touch displays can be retrofitted to
this type of installation if required.
2.2 Installation with Optima Basic display
See details in 1.0
2.3. Installation with Optima Touch display
2.3.1. Connect an Optima Touch controller to the Optima
270 and adjust settings as necessary.
NOTE: The Optima 270 controller parameters can be saved
to the Optima Touch for 1 ventilation unit and be
transferred to a similar system by using the “EA1 Save“ and
“EA2 load settings”
The latest version of the Genvex Genlog software can be
ordered from Genvex by telephone [phone].

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3. DISPLAYS
Userinterface Optima Basic
Button A:
• Push to activate/deactive
reheater (if connected)
• Push and hold to activate/
deactive humidty control
Button D:
• Push to increase fanspeed to
step 3 for 30 minutes (time
adjustable in menu A3).
Button B:
• Push and hold for 5
seconds to reset filter
timer
• Push and hold for 10
seconds to clear errors
and restart system.
Button C:
• Push to change fanspeed
• If no LED indicators are on
then fans are switched off
Micro USB interface for PC
programming of Optima 270
parameters.
LED light indicators
• LED light on indicate that function is enabled / on
• LED light off indicate that function is disabled / off
• LED light blinking indicate that function is active.
For further details on red light alarm codes, please
refer to Troubleshooting section 6

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Userinterface Optima Touch – main screen
Touch to change fanspeed
The actual fanspeed will be indicated by colored
fans indicating fanspeed 1-4
Standby will only be shown when menu EC9 is set
to ON. Please notice that fans will have a delay of
3-4 minutes until they are switched off.
Touch to change room
temperature setpoint
(influences opening of
summer bypass for room
cooling etc.)
Touch to access the status
information, alarms and
eventlog menu
Information bar
indicating data and
time. If any errors
have occurred
these will be
displayed here
Touch to go back
to go back to
previous menu
Touch to increase fanspeed to
step 3 for 30 minutes (time
adjustable in menu A3).
Touch to lock screen for 5
seconds . (time can be changed
in menu D).
Using a 70 percent isopropyl
alcohol wetted cloth, you may
gently wipe the exterior
surfaces
Touch to access the user and
service menu.
At the bottom of the display:
*Micro USB interface for PC programming of Optima 270
controller parameters.
*micro sd card – card reader for firmware update of
controller and display

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4. START-UP
4.2 Userinterface Optima Touch – screen saver
Depending on the screen saver settings in menu D – display.
The current screen displayed will switch back to screen
saver mode after 2 minutes. If D2 is set to 0 then the
screensaver will be permanently active. If a time is set in
D2 the screensaver will switch to blank screen according to
the time set.
To reenter the main menu – touch the screen gently for 2
second untill the screen reactivates.
4.1 Userinterface Optima Touch – initial start up
During initial start up of the Optima 270 ventilation
controller and with the Optima Touch connected to the
controller, the following information will be shown.
Please wait approximately 1 minute for the initial boot
sequence to complete.
Software version controller: actual software version of
Optima 270 controller.
Software version display: actual software version of
display.
Device ID: the ID of the internet connection secure
protocol device in the controller.
IP-adress: will only be shown if the ventilation unit has
been connected to a router via RJ45 connection
Internet connection status: will indicate whether internet
connection status is connected or disconnected. If status
indicates “disconnected” no connection through Genvex
Connect app or remote monitoring/ remote service can be
done.
Current indoor and
outdoor temperature.
Based on measurements
locally in ventilation unit
(fresh air and extract air)
Current time
and date
Screensaver

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5.1 User & service menu structure in Optima
Touch
The user and service menu structure in the Optima Touch
display is organized in the following sections
A. User: main user settings
B. Scheduler: calender schedules for change of fanspeeds
and temperature setpoints
C. Date/time: date and time settings for info screen and for
time stamping eventlog
D. Display: settings related to display and access to
parameters
E. Service: service menu – please note that this menu should
primarily be used by technicians with knowledge of the
machine operation.
5. CONTROLLER MENU

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6. CONTROLLER SETTINGS
Menu Description Factory setting and
(max. / min values)
A1 - Reheating If there is a reheater fitted to the system, you can choose if the
reheater should operate. If the set point is set to OFF, the heater
will not operate, even when this is necessary. If the set point is set
to ON, the heater will start, as required. It regulates in accordance
with the temperature set in item 1 of the User Menu.
A1: Off
(On - Off)
A2 - Humidity control Here you turn on humidity control. It must be set to ON in
order to be active.
A2: Off
(On - Off)
A3 - Boost time If there is a reheater fitted to the system, you can choose if the
reheater should operate. If the set point is set to OFF, the heater
will not operate, even when this is necessary. If the set point is set
to ON, the heater will start, as required. It regulates in accordance
with the temperature set in item 1 of the User Menu.
A3: 30 min
(1 - 120 min)
A4 - Timer levels 3 and 4
- on/off
When switching the ventilation unit to fanspeed 3 and 4, the
system will automatically return to fanspeed 2 after the number
of hours set in A5 when adjusting this set point to ON. If the set
point is set to OFF, the system will run at speed 3 or 4 until the
fanspeeds are manually changed.
A4 : Off
(On - Off)
A5 - Timer levels 3 and 4
- hours
If A4 is set to on , you can enter how many hours the system
should run on level 3 or 4 before it automatically returns to level 2.
A5: 3 hours
(1 - 9 hours)
B1- Fan scheduler Here four seperate timers per day can be set for change of
fanspeeds. The scheduler can be adjusted seperately for each
weekday if required. If the same values shall be used for all
weekdays - the schedule can be copied by touching the buttin
"apply to all days"
B1: Not used
(Not used / Fanspeed
1-4 / Standby)
B2 - Temperature
scheduler
Here four seperate timers per day can be set for change to a
lowered setpoint temperature (eg. for earlier opening of bypass
in summertime in nighttime). The scheduler can be adjusted
seperately for each weekday if required. If the same values shall
be used for all weekdays - the schedule can be copied by touching
the buttin "apply to all days"
B2: Not used
(Not used / Lowered /
Normal)
B3 - Enable scheduler Here it is possible to activate / deactive the fan schedule set in B1
and the temp schedule set in B2
Fan scheduler: Off
(On - Off)
Temp. scheduler: Off
(On - Off)
B4 - Alternative
temperature
Here it is possible to adjust the lowered temperature setpoint
selected in B2. The temperature selected here will be an offset
to the temperature selected in the main menu “requested
temperature”
B4: 0 °C
(-10 to +10)
C1 - Time Adjustment of actual time (important for error handling) -
C2 - Date Adjustment of actual date (important for error handling) -
C3 - Daylight saving timer Automatic switch over from summer/winter time ON/OFF C3: On
(On - Off)

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Menu Description Factory setting and
(max. / min values)
D1- Language Display language can be changed D1 : English
(English / Dansk /
Deutch / Svenska)
D2 - Screensaver time Idle time before screensaver activates.
0 = screensaver off
D2: 10 min
(0 - 600 min)
D3 - Display lock time Lock time active when touching lock symbol on main screen D3: 5 sec
(0 - 120 sec)
D4 - Password Main menu password:
Choose password for locking main menu access. If password is
selected - the next time the user trying to access the main menu
will be prompted for entry of password. To deactive password
promt use 0000 as password
Service menu password:
Choose password for locking service menu access. If password is
selected - the next time the user trying to access the main menu
will be prompted for entry of password. To deactive password
promt use 0000 as password
-
D5 - Firmware update Optima 270 controller and display can be firmware updated by use
of a micro-SD card inserted into the SD card reader of the Optima
touch display. Touch "start update" when the SD card containing
the latest firmware has been inserted into the card reader to
update the controller and display.
-
EA - Save/load settings EA1 - Save settings
Saves the settings from the Optima270 controller to the display
EA2 - Load settings
Loads settings stored in EA1 and transfers data to a new Optima
270 PCB
-
EB - Fan speed levels EB1 - Level 1 Supply air
Level 1, which is the lowest speed, is usually used when there is
nobody home. Both fans can be configured independently of each
other for all levels so that the air flow in the supply air and in the
extract air is equal, which provides optimal operation.
The adjustment of the system must be performed with specialised
air measuring equipment and can be done without using the main
regulating damper.
Configuring the air flows without expert advice is not
recommended. Incorrect configuration can lead to major energy
consumption or unpleasant indoor climate.
Setting option: between 0 and 100%.
EB2 - Level 2 Supply air
Level 2 is the recommended speed of the system for providing
optimal indoor climate. It should be adjusted to the ventilation
requirement of the dwelling.
Setting option: between 0 and 100%.
EB1: 30%
(0-100%)
EB2: 50%
(0-100%)

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Menu Description Factory setting and
(max. / min values)
EB - Fan speed levels EB3 - Level 3 Supply air is typically configured to a level with high
activity in the house
EB 4 - Level 4 supply air is typically configured to 100 % airflow
for a quick replacement of air in the entire house.
Remember that a higher air exchange rate increases energy
consumption.
EB5 - Level 1 Extract air
The fan speed is adjusted until the same air flow is achieved as the
supply air on level 1.
EB6 - Level 2 Extract air
The fan speed is adjusted until the same air flow is achieved as the
supply air on level 2.
EB7 - Level 3 extract air
The air flow of level 3 is adjusted to the same air flow as the
supply air on levels 3 .
EB8 - Level 4 Extract air
The fan speed is adjusted until the same air flow is achieved as the
supply air on level 4.
EB9 - Fan mode
Use % if no built in airflow sensors have been connected.
Fanspeed input EB1 to EB9 will be based on % of max capacity.
Choose m3/h as option for constant airflow control.
Please note that this requires built in airflow sensors in the
airhandling unit.
Please be aware that using this function without airflow sensors
will lead to corrupted airflows.
Please note that fans will automatically adapt to increased
pressuredrop (for example clogged filters) to maintain a constant
airflow - in this case increased fan power consumption is expected.
When selecting m3/h EB1 to EB9 will automatically allow direct
setting of desired airflow in m3/h. Be aware that m3/h setpoints
need to match capacity of MVHR unit.
EB10 - RPM Alarm
Off = RPM feedback from fans are not used actively
On = If RPM feedback from fans reach 0 and fans are expected to
run , the MVHR unit will shut down and show alarm.
EB11 - Reset RPM Alarm
Activate this function to reset RPM alarm once the problem has
been fixed
EB3: 75%
(0-100%)
EB4: 100%
(0-100%)
EB5: 30%
(0-100%)
EB6: 50%
(0-100%)
EB7: 75%
(0-100%)
EB8: 100%
(0-100%)
EB9: %
(% / m3/h)
EB10: Off
(on/off)
EB11: Off
(on/off)
EC - Regulator EC1 - Frost protection
Off = no frost protection active
Elec. fresh air = electrical preheater controlled by fresh air
temperatur sensor (T3)
Elec. exhaust air = electrical prehater controlled by discharge air
temperature sensor (T4)
EC1: Off
(off/ elec fresh air/
elec discharge air
/ fan reduc / rotor
reduc / fan+rotor
reduc)

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Menu Description Factory setting and
(max. / min values)
EC - Regulator Fan. reduc = supply air fanspeed is reduced gradualy to maintain
discharge air temperature sensor (T4) at setpoint value EC2
Rotor reduct. = rotorary heatexchanger RPM is reduced gradualy
to maintain discharge air temperature sensor (T4) at setpoint
value EC2. The deicing process will start automatically depending
on the indoor humidity measured and the outdoor air temperature.
minimum RPM for rotor in deicing mode = 1 RPM.
Fan/rotor reduct. = rotorary heatexchanger RPM is reduced
gradualy to maintain discharge air temperature sensor (T4) at
setpoint value EC2. The deicing process will start automatically
depending on the indoor humidity measured and the outdoor air
temperature. minimum RPM for rotor in deicing mode = 1 RPM.
If setpoint EC2 is not reached in due time, supply air fanspeed
reduction will assist in reaching the setpoint EC2.
EC2 - Frost reduction
Adjustable setpoint for frost protection strategy EC1
EC3 - Regulation method
T1 Supply air = air borne climate control is based on supply air
sensor
T7 Extract air = air borne climate control is based on extract air
temperature sensor
EC4 - 0-10 volt output selector
Bypass = PCB 0-10 volt output L11 is adapted to operate 0-10 volt
bypass motor
Rotor = PCB 0-10 volt output L11 is adapted to operate rotoary
heatexchanger
Watervalve = PCB 0-10 volt output L11 is adapted to operate 0-10
volt water control valve for waterbased reheater.
EC5 - Help function Relay H17.
Set point Function
0The relay is off.
1The relay is on when the system is running. This can, e.g. be used
to open and close the outdoor air damper and the discharge air
damper.
2The relay is on when extra heat is required or when the circulating
pump should run when heating with water reheating is required.
3The relay is on when the “Change filter” alarm is active. This can
be used to activate an external alarm.
4 The relay is on when extra cooling is required. This function is
used if a preheater is also fitted to the system.
5The relay will be on if one of the following two conditions are
met:
Brine Preheat function
• The outdoor temperature, sensor T9, is lower than the value
configured in EC8 (frost protection temperature, typically set
at 5°C).
Brine source cooling
• The outdoor temperature, sensor T9, is >15 °C and the
roomtemperature is > setpoint + 1 °C
EC2: 0
(-10 - 10)
EC3: T7 extract air
(T1 Supply air / T7
Extract air)
EC4: Watervalve
(watervalve/rotor/
bypass)
EC5: 0
(0 - 6)

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Menu Description Factory setting and
(max. / min values)
EC - Regulator 6The relay will be on when terminal L1 is bridged (for example
by connecting an kitchen hood to the MVHR unit). This function
can be used to activate a damper which will reduce airflow to
the rest of the house and focus extraction through the kitchen
hood.
EC6 - Regulation water
If a water reheater with a motor-operated valve is installed in the
system, it may be necessary to adjust the regulation time. The less
regulation time, the faster the motor-operated valve will regulate.
EC7 - Water heat protection
If a water reheater with motor-operated valve is installed in the
system, a frost protection sensor must be fitted to the water
reheater and the set point must be set to ON.
If no frost protection sensor is installed, the set point must be set
to OFF.
EC8 - Water heat protection temperature
If frost protection in item 25 is set to ON, the frost protection
temperature must be set to the temperature where the system
should stop and the motor-operated valve open completely for
the flow of hot water.
EC9 - System stop
Here you choose if it should be possible to stop the system by
selecting "standby" in fanspeed settings. If the set point is OFF,
the system cannot be turned off.
If On is chosen then "standby" will be shown in fanspeed selector
on main screen.
EC10 - Right / left model
right = MVHR configured as a right version (only applicable for
counterflow heatexchanger units and rotor right version)
left = MVHR configured as a left model (only applicable for
counterflow heatexchanger units)
rotor left = MVHR configured as a left model (only applicable for
rotary heatexchanger units)
Note this setting should only be changed by the installer as there
is a risk of corruption of the machine functions if wrong setting is
applied.
EC11 - Factory reset
Factory reset (-fans) = reset all controller values to factory
settings except fanspeeds
Factory reset = reset all controller values to factory settings
EC6: 20 sec
(1 sec to 250 sec)
EC7: Off
(On / Off)
EC8: 5 °C
(0 - 10 °C)
EC9: off
(On / Off)
EC10: Right side
(right side / rotor left
/ left side)
EC11: off
(off / Factory reset-
fans / Factory reset)

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Menu Description Factory setting and
(max. / min values)
ED - Electrical heating ED1 - Regulation electricity
If an electrical preheater or an electrical reheater is installed, it
may be necessary to adjust the regulation time.
ED2 - Preheating tempeature
Setpoint temperature for frost protection preheater - see menu
EC1 for reference temperature sensor
ED3 - Preheat PI P
P-band for the PI controller for the electrical modulating
preheater. The P-band controls the amplification of the controller
following a deviation from the set point (speeder)
ED4 - Preheat PI I
I-band for the PI controller for the electrical modulating preheater.
The function controls how quickly the controller adapts to a
deviation of the set point (brake).
ED5 - Preheat Reg
The Preheat Cycle function works, as follows: E.g. necessary
output 50% and cycle = 60 sec means that the controller will
switch the preheater on for 30 sec and off for 30 sec.
Note: Please refer to your country-specific regulations on
limitations when adjusting this function. The modulating preheater
function refers to the value adjusted in set point EC1.The
preheater will try to maintain a steady freish air temperature
according to this set point.
When the modulating preheater is used, the existing fresh air
temperature sensor (T3), which is built into the ventilation unit,
can be used as reference. No extra temperature sensor is required.
ED6 - Reheat offset
Offset for reheater with reference to the set point for the
requested temperature.
E.g. requested temp = 20°C
Offset value = 2 reheater aims to maintain a supply temperature
of 18°C
ED7 - Reheat PI P
P-band for the PI controller for the electrical modulating
reheater. The P-band controls the amplification of the
controller following a deviation from the set point (speeder).
ED8 - Reheat PI I
I-band for the PI controller for the electrical modulating
preheater. The function controls how quickly the controller
adapts to a deviation of the set point (brake).
ED1: 3 min
(1 - 30 min)
ED2: -3 °C
(-15 to +10°C)
ED3: 5
(1 - 255)
ED4: 200
(1 - 255)
ED5: 40 sec
(10 - 120sec)
ED6: -2 °C
(-10 to +10°C)
ED7: 5
(1 - 255)
ED8: 200
(1-255)

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Menu Description Factory setting and
(max. / min values)
ED - Electrical heating ED9 - Reheat reg.
The Reheat Cycle function works, as follows: E.g. necessary
output 50% and cycle = 60 sec means that the controller
will switch the reheater on for 30 sec and off for 30 sec.
Note: Please refer to your country-specific regulations on
limitations when adjusting this function.
The modulating reheater function refers to the value
adjusted in selected temperature and chosen sensor for control
(see EC3). To allow the reheater to operate adjust set point
A1=on;The reheater will try to
maintain a steady supply air temperature according to this
set point.
When using the modulating reheater, it will be necessary to
replace the inlet air temperature sensor (T1) in the
ventilation unit with a new temperature sensor installed
upstream of the reheater.
ED9: 40 sec
(10-120sec)
EE - Bypass EE1 - Bypass open offset
Here you set the temperature at which the bypass should be
100% open. You set a temperature differential, which
means that if you want the bypass to be 100% open at e.g.
23°C and if the set temperature is
20°C, this menu item should be set to 3°C.
The bypass will open, provided that:
1. The extract air temperature is higher than the outdoor air
temperature.
2. The outdoor air temperature is above the set temperature in
EE2.
Units with modulating bypass
If the temperature rises by 0.5°C above the requested
temperature, the bypass damper will begin to
open. The bypass is 100% open when the temperature
reaches the set point requsted temperature + the
temperature differential set in this menu item.
To get a smooth opening of the bypass, the temperature at
which the bypass is fully open should be set to approx. 3 ºC
above the requested temperature.
Units with on/off bypass
The bypass opens when the temperature reaches the requested
temperature + the temperature differential
set in this menu item.
EE2 - Turn off bypass
To prevent the bypass damper from opening at low outdoor
air temperatures and from blowing cold, unheated air into
the dwelling, use this function to configure the lowest
outdoor air temperature, at which the damper must be
closed. The value is an expression of the greatest
difference that may exist between the requested temperature and
the lowest outdoor air
temperature (offset).
Setting option: Between 0 and 20 °C. If 0°C is selected,
the function is disabled.
EE1: 3 °C
(1 - 10 °C)
EE2: 4°C
(0-20°C)

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Menu Description Factory setting and
(max. / min values)
EE - Bypass EE3 - Forced speed
In this menu the requested incremental forced air fanspeed can be
selected, when the bypass opens for night cooling and when the
setpoint value in EE4 is exceded.
EE4 - Forced temp.
Setpoint offset value for activation of forced air fanspeed when
bypass has opened for night cooling. (fanspeed increased by value
set in EE3) for example.
Requested temperature 20 °C
EE1 = 3 °C
Bypass opens at 23,1 °C
EE4 = 3 °C
Fanspeed increase at 26,1 °C
EE5 - Bypass time minimum on
Bypass will be open minimum according to the setpoint
EE3: 0 %
(0 - 100 %)
EE4: 3 °C
(0 - 5 °C)
EE5: 5 min
(0-60 min)
EF - Filter EF1 - Reset filter
select this option to reset filter timer to 0 days
The current counter value will display current days since last
filterreset
EF2 - Filtertimer
Setpoint for adjusting months until filteralarm will activate
0 months = filtertimer deactived
EF3 - Filter/stop
To ensure that the filters are changed when the filter change
alarm is active, the set
point can be set to ON. The system will then stop
automatically after 14 days if the filters have not been
changed in
the meantime.
If this precaution is not required, the set point can be set to
OFF and the system will continue to operate.
EF1: reset filter
EF2: 3 months
( 0 - 12 months)
EF3: off
(On/Off)
EG - Humidity control EG1 - Humidity max temperature
Setting the end point for outside temperaturecompensation (T3),
see the X-axis on the graph.
EG2 - Humidity max value
Setting the end point for outside temperature
compensation, see the Y-axis on the graph (desired max.
humidity value).
EG3 - Humidity fanspeed
Setting of how much the fan speed may differ in relation to
the desired fan speed.
Examples
Set point fanspeed level 2 (EB2 / EB6) = ± 15%
EG1: 15 °C
(5 - 25 °C)
EG2: 60 %
(35 - 85 %)
EG3: 15 %
(5 - 30 %)

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Menu Description Factory setting and
(max. / min values)
EG - Humidity control EG4 - Humidity regulation frequency
Setting of desired frequency for how often the fan speed
may be changed.
The function is defined as 1% per unit of time.
When humidity regulation is activated, the current
humidity is continuously measured via the integrated
humidity sensor in the ventilation unit, which is placed
in the extract air duct.
EG4: 10 min
(1 - 60 min)
EH - Rotor EH1 - Rotor speed (rpm)
setpoint value for minimum rotary heatexchanger speed (rounds
per minute)
Be aware that a reduction in RPM might decrease heat recovery
rate but will increase the operating range of humidity recovery.
This values should be adjusted by an installer.
EH2 - Rotor stop C
Offset temperature setpoint for stop of heatrecovery using a
rotary heatexchanger.
for example
setpoint temperatur 20 °C
EH2 = 2
Rotary heatexchanger will stop when fresh air temperatur T3 is
20-2= 18 °C
This function will save energy for the rotor motor when there is
limited possibility to recover energy
EH3 - Rotor max deicing time
Setpoint in minutes for maximum time used for decicing rotary
heatexchanger. When exceeding the time limit the rotary
heatexchanger will return to normal operation.
EH4 - Rotor deicing pause
Setpoint in hours corresponding to minimum time between deicing
cycles
EH1: 10 rpm
( 0-25 rpm)
EH2: 2 °C
(0-10 °C)
EH3: 30 min
(1 - 120 min)
EH4: 4 hours
(1-8 hours)
EI - Demand control EI1 - CO2control
On = activates external sensors for demand control (if available)
Off = no external sensors for demand control available
EI2 - CO2setpoint
setpoint for desired CO2level in PPM.
If CO2level increase above setpoint, the fans will increase speed
in steps to maintain CO2level at setpoint.
EI3 - CO2level time
setpoint in minutes for time between increase/decrease fanspeed
in steps according to CO2level (see setpoint EI2)
EI4 - Number of RF CO2sensors
Select number of wireless CO2sensors connected.
Make sure that the dip switches in the CO2sensors are set correct
according to seperate documentation.
EI1: Off
(On/Off)
EI2: 800 PPM
(400- 2000 PPM)
EI3: 30 min
(0 - 1000 min)
EI4: 0
(0-4)

19
Menu Description Factory setting and
(max. / min values)
EJ - Fire control EJ1 - Number of fire dampers
Setpoint for number for fire dampers connected to the system
which need to be monitored
0= fire control system inactive
1-4 = number of dampers connected
EJ2 - Fire test/ Reset
Off = automatic mode, damper will be tested once a month
according to schedule
Test = test system now, with this function a function test of the
fire damper will be force started and the result shown in the
display (N.B. there will be a delay of up to 240 seconds from when
the test is started until the test is carried out).
Reset = reset fire alarm, in case of error during damper test,
error in damper/smoke detector or lack of communication, the
ventilation unit will shut down and an alarm symbol will be shown
on the display.
To restart the unit, a reset of the fire automation must be carried
out.
EJ3 - Fire test date
Schedule for when automatic monthly fire/smoke damper test
shall be conducted
EJ4 - Fire test hour
Schedule for when automatic fire/smoke damper test shall be
conducted
EJ1: 0
(0 - 4)
EJ2: Off
(Off / Test / Reset)
EJ3: 1
(1 - 31 day)
EJ4: 0
(0 - 23 hour)
EK - District heating PLEASE NOTE:
If no external outdoor air temperature sensor has been connected
the controller, the built in fresh air temperature sensor in the
MVHR is used as reference for calculating weathercompensation
temperature setpoints.
EK1 - District heating mode
Off = no external heating circuit connected
Floor = underfloor heating circuit connected
Radiator = radiator heating circuit connected
EK2 - Outdoor temp. Comp. At -12 °C
Setpoint for flowtemperature at -12 °C outdoor temperature
EK3 - Outdoor temp comp at 20 °C
Setpoint for outdoor temperature when flow temperature is 20 °C
An outdoor air temperature exceeding the setpoint in EK3 will
close the heating circuit (sommerstop)
EK4 - Compensation curve offset
Setpoint in °C where heating curve compensation set in EK5 will
have maximum influence
EK5 - Compensation curve
Heating curve can be increased in steps of 0-5 °C with max
influence according to value set in EK4
EK1: Off
(Off / Floor / Heater)
EK2: 45°C
(20 - 90°C)
EK3: 20°C
(15 - 25°C)
EK4: 2°C
(-10 - +10°C)
EK5: 2°C
(0 - 5°C)

20
Menu Description Factory setting and
(max. / min values)
EK - District heating EK6 - Max flow temperature
Flowtemperature will be limited to maximum 45 °C if underfloor
heating is selected in EK1
Flowtemperature will be limited to 90 °C if radiator heating is
selected in EK1
EK7 - Valve time (sec)
Time for 3-point control valve from fully closed to fully open
(depends on actuator and valve stem configuration). Please refer
to valve supplier manual for this information.
EK8 - Max return temperature
If max return temperature exceeds the temperature setpoint, then
the valve will close incrementally untill the return temperature
setpoint is archieved.
EK9 - Neutral Zone
Hysteresis for temperature control via PID
EK6: 45°C
(20 - 65°C)
EK7: 150 sec
(1 - 255 sec)
EK8: 50°C
(25 - 70°C)
EK9: 1°C
(0 - 10°C)
EK - Space heating
control
EK10 - Heating PI P
PI controller P-band
By increasing this value the controller will try to reach the setpoint
temperature faster (with a risk of overshooting the setpoint)
EK11 - Heating PI I (x10)
PI controller I-band
By increasing this value the controller will try to reduce
overshooting / offset of temperatures (with a risk of slowing the
controller down)
EK12 - Heating Reg time
PI controller regulation time
By increasing this value the controller will be slowed down as time
between recalculation of valve position will be increased
EK10: 20
(0 - 255)
EK11: 50
(0 - 255)
EK12: 5 sec
(1 - 120 sec)
EL- Modbus EL1 - Modbus adress
Modbus slave adress of unit
EL2 - Modbus baud rate
choose either 9600 or 19200 baud depending on the application
type
EL3 - Modbus Parity
choose odd or even depending on the application type
EL4 - Modbus Modify
choose off or on depending on the application type
EL1: 20
(1 - 247)
EL2: 19200 baud
(9600 baud / 19200
baud)
EL3: Even
(None / Even / Odd)
EL4: On
(On/Off)
EM - Manual override Enter password for entering relay test program (only for
installers)
OEM Enter password for entering OEM program (only for installers)