                 USER MANUAL

                                                                           UK / Version 22.08.2014

            OPTIMA 250
                                                         DISPLAY VER. 3.1 / PCB ES960C

           GES ENERGY 1, GES ENERGY S/M, GE ENERGY 1/2/3

Genvex A/S • Sverigesvej 6 • DK-6100 Haderslev • Tel.: +45 73 53 27 00 • salg@genvex.dk • genvex.dk
   Table of contents

                                                                                                                          Page

                               1. Mounting Design................................................................. 3

                               2. Control panel........................................................................ 4

                               3. Installation............................................................................. 4

                               4. Start-up................................................................................... 4

                               5. Operating............................................................................... 5

                                     5.1 Operating and changing data in the operating menu................ 5
                                     5.2 Main menu................................................................................. 6
                                     5.3 Date and time............................................................................ 6
                                     5.4 Calendar.................................................................................... 7
                                     5.5 User menu................................................................................. 7
                                     5.6 Display menu............................................................................. 8
                                     5.7 Info menu................................................................................ 10
                                     5.8 Service menu...........................................................................11
                                     5.9 Schedule for week program.................................................... 14
                                     5.10 Schedule for set points ......................................................... 15

                               6. Function............................................................................... 16

                                     6.1 Controlling Optima 250............................................................ 16
                                     6.2 Extra capacity.......................................................................... 16
                                     6.3 Operating reliability.................................................................. 16

                               7. Maintenance........................................................................ 17

                                     7.1 Unit......................................................................................... 17
                                     7.2 Alarms..................................................................................... 17
                                     7.3 Dismantling/taking the system out of service.......................... 17

                               8. Troubleshooting................................................................ 18

                                     8.1 Safety thermostat in electrical heater (optional equipment)......... 18
                                     8.2 The system is not running ..................................................... 18
                                     8.3 Air faults................................................................................... 18

2  Subject to technical modifications of Optima 250 Design
1. Mounting Design                                              A low-current cable 4 x 0.25 mm2 must be attached
                                                                between the unit and the control panel. 50 m is the
1.1 Installation of the control panel                           maximum cable length. The voltage drop for cable
                                                                lengths over 50 m is too high and can result in unreliable
The control panel is designed to be mounted onto a flat         operation.
wall.
                                                                How to mount the wall fixture:
1.2 Mounting
                                                                First screw the fixture securely onto the flat wall and pass
Find the location on the wall where you will fix the control    the cable up from below.
panel and mark the screw-hole positions. A min. of four
screws must be used, the two bottommost and the two             Connect the low-current cable to the terminal block. Check
topmost.                                                        that the cable is connected to the same numbers at both
                                                                ends. (Between the control panel and the main circuit
Mandatory Screw  Mandatory Screw                                board in the unit.)

         Screw      Screw                                       Next clip the control panel to the wall fixture by guiding
Mandatory Screw  Mandatory Screw                                it down from above, slightly slanting out at the bottom.
                                                                Finish by pressing in at the bottom so that it sits flat
                                                                against the wall. For demounting: pull the control panel a
                                                                little out at the bottom and lift up.

Hold the wall frame against the wall and mark the
screw-hole positions. Drilling of holes, hole size and the
corresponding screws for fixing the panel depend on the
wall material.

Place the control panel in the fixtures and tilt it in against
the wall. The four support points in the corner of the
display must touch the wall to keep the display stable.

Support             Support                                     Description
Point               Point                                       Panel housing
                                                                Front of panel
Support                                                 Pos.    Pressure plate for display
Point                                                   1       Wall fixture
                                                        2       Glass for the display
                                                        3
                                                        4
                                                        5

                    Support
                    Point

                               A

Underneath the control panel there is an access for the:
A: Terminal block. Connection to main circuit board

                 Subject to technical modifications of Optima 250 Design                    3
   2. Control panel                                              4. Start-up

   The control panel must be mounted on an interior wall that    The first time the system is started, the control panel dis-
   is centrally located in the home.                             play will show: “Choose language”.
   Since the control panel at the same time functions as a
   room thermostat, it is important to observe the following:    Click “Next” to switch between available languages. Press
                                                                 “Enter” when the desired language is shown in the display.
   • Do not expose the control panel to direct sunlight          The control panel will now load the current program ver-
   • Do not place the control panel on an outer wall             sion in the selected language.
   • Do not recess the control panel in the wall
   • Do not place the control panel over a heat source           The display will show:

   A lamp close to the control panel can affect the light        • Updating model (loading the current model)
   sensor so that the control panel will not regulate the light  • Wait 1.5 minutes (It takes approximately 1.5 minutes to
   intensity as intended.                                        load the current version)
                                                                 • Language load (91)
   On the front of the control panel in the ring there are 7     • Language OK
   keys that are used to operate the panel. The function of      • Menu load (84)
   the keys changes depending on the menu selected.              • Menu OK
   (More information is available under Operation).              • Icon load (369)
                                                                 • Menu OK
   There is an infrared movement sensor located under the        • Reset to default
   glass screen. Simply by moving your hand past the con-        • Restarting……..
   trol panel you can bring up the menu for daily operating      • Optima 250 UK
   options. (This function can be turned off:
   See under Main menu/Display/Menu item 5).                     The display will then change to:

   The following are located at the bottom of the control        • The Genvex logo
   panel:                                                        • Optima 250 UK
                                                                 • Version number
   1: SD card                                                    D (Control panel): X.X
   2: Room sensor                                                C (Main board): X.X
   3: Light sensor
   4: Mini USB port for connection to computer                   Finally, the display changes to daily operation and the
                                                                 system is now in operation with the factory setting which is
   1: The removable SD card contains all the control models      only a basic setting.
   and versions that make the control panel compatible with
   older versions. The SD card also contains all the langu-      The system is now ready to be adjusted with the most
   ages, menus, help texts, symbols and collected data logs.     optimal air flows and the operational desires and demands
   During the start-up procedure, the current versions are       for the dwelling in question, e.g. weekly operation,
   installed in the control panel so that the control can func-  temperatures etc. to achieve the most effective utilisation
   tion without the SD card. However, the help texts will not    and operation of the system.
   appear in the display and the data logs will not be saved.

   4: In order for a computer to read the data logs,
   the Genvex data logger program must be installed.

   3. Installation

   Please see the installation guide.

4                                      Subject to technical modifications of Optima 250 Design
5. Operating                                                  after heating will not commence, even if required.

Optima 250                                                    K4 - Main menu
                                                              Use this function to enter the main menu and access the
All Genvex ventilation units of the types GE Energy and       sub-items Date and time, Calendar, User menu, Display,
GES Energy for dwellings are delivered with the Optima        Info operation and Service menu.
250 control, which has a factory setting so that the system
can be put into operation without further setting.            K5 - Filter
The factory setting is only a basic setting that should be    Use this function to reset the filter alarm. The key next to
adapted to the operating desires and demands for the          the “Filter” symbol resets the alarm for filter change. To
dwelling in question to achieve the most effective utilisa-   reset the filter alarm, change the filters and hold down the
tion and operation of the system.                             key with the “Filter” symbol until the exclamation mark in
                                                              the symbol disappears.
5.1 Operating and changing data in the
operating menu                                                K6 - Information
                                                              Use this function to get an overview of the current operat-
Normally the symbols for daily operating options are          ing condition, e.g. temperatures, fan settings, relay status/
displayed and the following keys can be seen.                 function ON/OFF, alarms, timers etc.
                                                              Use the key next to the symbol “Info” to read the operating
K1  K7                                                        condition of the unit. More information can be found in the
                                                              main menu section under the item Info operation.
K2  K6
                                                              K7 - Temperature
                           K3 K4 K5                           Use this function to set the room temperature if the system is
                                                              equipped with an after heater and/or a bypass damper. Press
K1 - Speed                                                    the key next to the “Temperature” symbol to enter the desired
Use this function to set the fan speed to levels 0-1-2-3-4.   temperature between 10 and 30 °C. The current temperature
Use the key next to the “Speed” symbol to change be-          will be displayed at the centre of the screen.
tween the 4 speeds. The system can also be stopped by         Press the key K4 to enter the main menu and sub-menus and
holding down the key for 3-4 seconds on condition that        the following keys change function:
item 28 of the Service menu is set to ON.
                                                              K3 changes to “Arrow down ” and when changing the
K2 - Forced operation (Party mode)                                 setting to “÷”.
Use this function/key to set the timer to party mode from
0 to 9 hours. If the number of hours is set to 0, speeds 3    K4 changes to “Enter”. Press “Enter” to proceed through
and 4 will run until the speed is changed manually. If the         the menus and sub-menus.
the number of hours is set between 1 and 9 hours, speeds
3 and 4 will automatically reconnect to speed 2 after the     K5 changes to “Arrow up” and when changing the setting
number of hours configured.                                        to “+”.

K3 - After heating                                            K6 changes to “Exit”. Press “Exit” to return to the previous
Use this function to switch the after heating on and off. On       screen.
the key next to the symbol “After heating” you can change
between “+” and “÷”. If the symbol is set to “+” and the      K7 changes to “Help”. Press “Help” to see a short guide 		
system is equipped with an after heater the after heating          to the current menu item.
will commence as required. If the symbol is set to “÷”, the
                                                              The horizontal arrow in the menu shows the current
                                                              location. To save changes to a menu item, finish by
                                                              pressing “Enter”.

    Subject to technical modifications of Optima 250 Design   5
   5.2 Main menu                                                 05 Month
                                                                 Enter the current month here.
   There is a “Book” symbol at the bottom centre of the
   screen with the daily operating options. Press this key to    06 Year
   enter the main menu.                                          Enter the current year here.

   Date and time (item 4.3)                                      Weekday                       Month

   Calendar   (item 4.4)                                         Monday    1                   January   1

                                                                 Tuesday   2                   February  2

   User menu  (item 4.5)                                         Wednesday 3                   March     3

                                                                 Thursday 4                    April     4

   Display    (item 4.6)                                         Friday    5                   May       5

                                                                 Saturday  6                   June      6

   Info operation (item 4.7)                                     Sunday    7                   July      7

   Service menu (item 4.8)                                                                     August    8

                                                                                               September 9

   “Arrow down” or “Arrow up” will change the symbol to a                                      October   10
   horizontal arrow that shows the current location.
                                                                                               November 11

                                                                                               December 12

   Press “Enter” to access the sub-items of the current menu.
   Press “Arrow down” or “Arrow up” again to select the re-
   quired sub-menu item. When the horizontal arrow is next
   to a sub-menu item, the 2 lines will change place, the font
   sizes will change and the text “Set” will be added. Press-
   ing ”Enter” next to the selected sub-menu item will change
   the background of the item to grey. Use the ”+” and ”÷”
   keys to change the current value. Press “Enter” again to
   save the change.

   If no changes are required, press “Exit” to go back out of
   the menus. Press “Help” to see a short guide to the menu
   item. Press one of the keys to exit the help program.
   After a short period of non-activity, the control will auto-
   matically exit the programs.

   5.3 Date and time

   Use this function to set the date and time.

   01 Hours
   Enter the current hour here.
   When changing between summer and winter time you
   have to set the time one hour forward or back manually.

   02 Minutes
   Enter the current minute here.

   03 Weekday
   Enter the current weekday here.

   04 Date
   Enter the current date here.

6                             Subject to technical modifications of Optima 250 Design
5.4 Calendar                                                    5.5 User menu

Use this function to configure the setting of each day of       01 - Temperature
the week. Each day can be configured to run with different      Set the desired temperature between 10 and 30 °C.
fan speeds as required. You can copy the configuration          In item 19 of the Service menu you can choose between
from one day to another. You can choose ON or OFF here,         supply air regulation, room regulation or extract air regulation.
i.e. if for a period of time there is nobody home, the daily    (The sensor is mounted in the control panel).
settings can be turned off and the system will run accord-      Setting option: between 10 and 30 °C.
ing to a manual setting, e.g. level 1.                          Factory setting: 21 °C.

01 - Calendar                                                   02 - Preheating
Choose between controlling the system manually or con-          If a preheater is fitted to the fresh air duct the set point must
trolling the speed (air exchange) and temperature auto-         be configured to ON. Enter the desired preheating tempera-
matically according to a fixed day program. If the menu         ture in item 20 of the Service menu. If instead a refrigerant
item is set to OFF, the system will be controlled manually      device is installed in the supply air duct the set point must be
according to the speed and temperature selected.                configured to OFF. (It is not possible to control a preheater
If the menu item is set to ON, the system will be controlled    and a refrigerant device at the same time). If both types of
according to the day programs entered in the menu items         optional equipment are installed, the set point must be con-
02 to 08.                                                       figured manually in spring and autumn. If none of the help
Setting option: ON/OFF.                                         functions in item 27 of the Service menu are used, the help
Factory setting: OFF.                                           function 4 can be used to control the additional cooling.
                                                                Setting option: ON/OFF.
02 - Monday                                                     Factory setting: OFF.
Up to 10 switching times can be entered for one day. The
times can be entered in random order. Enter the hours in the    03 - After heating
first column, the minutes in the second and the speed in the    If a after heater is fitted to the system it is optional if the after
third column. Use the fourth column to enter the temperature    heater should operate. If the set point is configured to OFF
difference by which the temperature should be lowered.          the after heater will not operate, even if required. Is the set
Example: If the temperature is set to 21 °C and you enter       point configured to ON the after heater will engage as re-
– 2.0 °C, the system will aim at 19 °C.                         quired. It regulates according to the temperature set in item
If the speed has been changed manually on the key under         1 of the User menu.
daily operation, the program will return to the day program     Setting option: ON/OFF.
when the next switching time is passed.                         Factory setting: OFF.

                   Examples of a day program:                   04 - Timer levels 3 and 4
                                                                At speeds 3 and 4, the system will automatically reconnect
                            01 07:30 H3 -0,0                    to speed 2 after the number of hours set in item 17 of the
                            02 09:15 H1 -1,0                    Service menu by configuring the set point to ON. If the set
                            03 17:00 H3 -0,0                    point is set to OFF, the system will run at speed 3 or 4 until
                            04 18:00 H2 -0,0                    it is manually changed to another speed. The timer can
                            05 23:30 H2 -2,0                    also be operated directly on the key next to the symbol for
                                                                “Party mode” on the screen for daily operating options.
It is not necessary to use all switching times. If the line is  Setting option: ON/OFF.
marked by 0, it will be skipped by the control.                 Factory setting: OFF.

03 to 08                                                        05 - Change filter
These days can be filled in individually in the same way as     A filter timer is built-in counting how long the system has
under item 02.                                                  been running since the last change of filter. The set point
                                                                can be set between 1-6, which corresponds to 1-6 months.
09 Copy day                                                     It is recommended that the set point should initially be set
Use this menu item to copy one day to another, where the        to 3, corresponding to 3 months.
same switching times, speeds and temperature lowering           If the filters are too dirty after the period configured, set
are required.                                                   the set point to a lower number. If it is not necessary to
For example: From Thursday to Tuesday.                          change the filters after the configured period, the set point
                                                                can be set to a larger number.
                                                                When the timer reaches the configured value for the
                                                                change of filter, the alarm “Change filter” will flash at the
                                                                top of the screen saver.

Subject to technical modifications of Optima 250 Design         7
   When the filters have been changed, return to the screen     screen with the symbols for the daily operating options by
   with daily operating options and hold down the key for the   moving your hand past the control panel.
   “Filter” symbol until the exclamation mark disappears and    If the function is set to OFF, press any key to display the
   the system returns to normal operation.                      daily operating options.
   Setting option: between 1 and 6 months.                      Setting option: between 0 and 4.
   Factory setting: 3 months.                                   Factory setting: 1.

   06 - Humidity control                                                         ”0” OFF
   Here the humidity control is turned on, which must be set                     ”1” Max sensitive
   to ON in order to be active.                                                  ”2” Level 2
   Setting option: ON/OFF.                                                       ”3” Level 3
   Factory setting: OFF.                                                         ”4” Least sensitive

   5.6 Display menu                                             06 - Auto lightness
                                                                In the display there is a movement sensor.
   The menu item with the “Display” symbol.                     Setting option: ON/OFF.
   Use this function to configure the following sub-menu        Factory setting: ON.
   items:
                                                                07 - Lightness day
   01 - Language                                                Use this to enter the maximum brightness level for the
   Choose between several different languages in the dis-       control panel when the room is fully lit.
   play.                                                        Setting option: between 0 and 100 %.
                                                                Factory setting: 100 %.
   02 - Program info
   This menu shows which Optima is fitted on the system         08 - Lightness night
   and its version number:                                      Use this to enter the minimum brightness level for the
   Example: Optima 250 UK D: 3.1 C: 1.0                         control panel when the room is in complete darkness.
   D represents the version number of the control panel.        Setting option: between 0 and 100 %.
   C represents the version number of the main board.           Factory setting: 30 %.

   03 - Screen saver.                                           09 - Lightness day screen saver
   The following settings can be selected here:                 Use this to enter the maximum brightness level for the
   0: Screen saver off (daily operating options are displayed)  screen saver when the room is fully lit.
   1: Screen saver off, but with light dimming                  Setting option: between 0 and 100 %.
   2: Room temperature + light dimming                          Factory setting: 50 %.
   3: Clock + light dimming
   4: Clock and room temperature + light dimming                10 - Lightness night screen saver
   5: Black screen + light dimming                              Use this to enter the minimum brightness level for the
   Setting option: between 0 and 5.                             screensaver when the room is in complete darkness.
   Factory setting: 3.                                          Setting option: between 0 and 100 %.
                                                                Factory setting: 0 %.
   04 - Pause time
   Use this to set the period from no operation of the symbols  11 - Reset to factory settings
   on the screen for daily operation until the screen auto-     If the set points are configured so that the system does
   matically returns to the screen saver. From daily menu       not function as expected and the cause cannot be estab-
   to screen saver variable from 1 to 10 minutes. The other     lished, there are 2 different options to reset the menu
   automatic return connections cannot be adjusted. If no       items to the factory settings.
   key has been pressed within the time intervals indicated
   below, it will automatically return to the previous screen:  - Press 1 to change all menu items to the factory settings
   -Change in menu item back to menu item = 30 seconds          except for the menu items for Speed (Level), Filter timer,
   -From menu item to main menu = 2 minutes                     Calendar and Defrost temperatures.
   -From menu item to daily menu = 2 minutes
   Setting option: between 1 and 10 minutes.                    - Press 2 to change all menu items to the factory settings.
   Factory setting: 10 minutes.                                 Note: Before performing a reset, ensure that the currently
                                                                entered values are noted in the “Schedule for set points”.
   05 - Auto wake-up                                            Setting option: between 0 and 2.
   It is possible to deactivate the “Auto wake-up” function,    Factory setting: 0 mode.
   where you can change from the screen saver to the

8  Subject to technical modifications of Optima 250 Design
12 - Safety menu                                                 5.7 Info operation
It is possible to prevent access to selected main menu
items so that they can only be changed with a password,          The Info operation menu provides an overview of the
which is a 4-digit figure. The first time, press 4 times 0 and   current operating status of the system. If you want to see
then “Enter”. Items 13 to 18 will open. Select the password      the operating status of the system over a period of ope-
in item 18, which will also be the password to access the        ration, connect the control panel to a computer and use
menu items 13 to 18 in future.                                   the Optima data logger program. The system monitors
                                                                 the operating status every minute and stores the data for
13 - Date and time                                               up to one year on the SD card.
If this item is set to ON, it will not be possible to enter the
menu for Date and time without using the selected pass-          Current temperature
word in item 18.                                                 Press “Enter” next to the info operation menu. The first
Setting option: ON/OFF.                                          screen displayed shows the current temperatures.
Factory setting: OFF.
                                                                                      T1 Supply air
14 - Calendar                                                                         T2 Room
If this item is set to ON, it will not be possible to enter the                       T3 Fresh air
menu for Calendar without using the selected password in                              T4 Exhaust air
item 18.                                                                              T7 Extract air
Setting option: ON/OFF.                                                               T8 Frost protection
Factory setting: OFF.                                                                 T9 Extra sensor

15 - User menu                                                   Current fan speed
If this item is set to ON, it will not be possible to enter the  Press “Arrow down” to display the current percentage fan
User menu without using the selected password in item 18.        speeds and the opening of the bypass damper and of the
Setting option: ON/OFF.                                          water valve.
Factory setting: OFF.
                                                                 Supply air     in %
16 - Display                                                     Extract air    in%
If this item is set to ON, it will not be possible to enter the  Bypass damper  in %
menu for Display without using the selected password in          Water valve    in %
item 18.                                                         Bypass         on/off
Setting option: ON/OFF.
Factory setting: OFF.                                            Current setting of operation relays
                                                                 Press “Arrow down” again to display the current status of
17 - Service menu                                                the operation relays.
If this item is set to ON, it will not be possible to enter
the Service menu without using the selected password in                              R2 After heating
item 18.                                                                             R3 Preheating
Setting option: ON/OFF.                                                              R8 System in operation
Factory setting: OFF.                                                                R9 Help relay 9

18 - Password
Enter the selected password here and use this also in
item 12 to enter items 13 to 18. If you forget your pass-
word, contact Genvex Service department for assistance.
To change the password, enter a new password in this
item and press “Enter”. The password has now been
changed.

Subject to technical modifications of Optima 250 Design                                                                     9
Current list of alarms                                                                 5.8 Service menu
Press “Arrow down” again to display the current alarms.
An alarm it is activated if ON appears beside it. At ON                                Use this function to configure the following sub-menu items.
there is an alarm, which can also be seen on the screen
saver and the display for daily operating options. At the top                          10 - Level 1 Supply air
it says alarm. The Info operation menu shows the type of                               Level 1, which is the lowest speed, is usually used when
alarm. When the timer for changing filter reaches the set                              there is nobody home. Both fans can be configured inde-
value, the alarm “Change filter” will flash at the top of the                          pendently of each other for all levels so that the air flow in
screen saver.                                                                          the supply air and in the extract air is equal, which pro-
The alarm will read OFF when the error has been cor-                                   vides optimal operation.
rected or the filter is changed and reset.                                             The adjustment of the system must be performed with
                                                                                       specialised air measurement equipment and can be per-
    Alarm            Status Error at ”ON”                                              formed without the use of the main regulating damper.
                                                                                       It is not recommended to configure the air flows without
    Control stopped  ON/OFF  Filter not changed after 14 days/ Frost protection        expert advice. Incorrect configuration can lead to major
                             error/The system is equipped with an external             energy consumption or unpleasant indoor climate.
                             switch between terminals 28 and 29. “Alarm” will be       Setting option: between 0 and 100 %.
                             displayed when these are short-circuited and the          Factory setting: 30 %.
                             system has stopped.
                                                                                       11 - Level 2 Supply air
    Change filter    ON/OFF The filters should be changed.                             Level 2 is the recommended speed of the system in order
                                                                                       to provide the optimal indoor climate and it should be
    Frost protection ON/OFF The temperature of the water after heater is too low       adjusted to the ventilation requirement of the dwelling.
                                           (frost danger).                             Setting option: between 0 and 100 %.
                                                                                       Factory setting: 50 %.
    Com error        ON/OFF The control panel cannot communicate with the main
                                    board between display and printed circuit board).  12 - Levels 3 and 4 Supply air
                                                                                       Level 3 is the highest speed that can be configured. It is
Hour counters (2 pages)                                                                used e.g. if there are many guests or there is a lot of acti-
Press “Arrow down” again to display the hour counters,                                 vity in the kitchen.
which count from the day the system is put into operation.                             Setting option of level 3: between 0 and 100 %.
The figures shown should be multiplied by 10. This shows                               Factory setting of level 3: 75 %.
how many hours the system has been running, how many                                   Level 4 is used mainly in summer to lower the indoor
hours the system has run at the various speeds and how                                 temperature. Remember that a higher air exchange rate
many hours the relays have been connected (ON).                                        increases the energy consumption.
                                                                                       Setting option of level 4: cannot be configured.
   Total tid                                                                           Factory setting: 100 %.
   Level 0
   Level 1                                                                             13 - Level 1 Extract air
   Level 2                                                                             The fan speed is adjusted until the same air flow is
   Level 3                                                                             achieved as the supply air on level 1.
   Level 4                                                                             Setting option: between 0 and 100 %.
   Relay 2 After heating                                                               Factory setting: 30 %.
   Relay 3 Preheating
   Relay 8 System in operation                                                         14 - Level 2 Extract air
   Relay 9 Help function                                                               The fan speed is adjusted until the same air flow is
                                                                                       achieved as the supply air on level 2.
Press “Exit” to return to the main menu.                                               Setting option: between 0 and 100 %.
                                                                                       Factory setting: 50 %.

                                                                                       15 - Levels 3 and 4 Extract air
                                                                                       The air flow of level 3 is adjusted to the same air flow as
                                                                                       the supply air on levels 3 and 4 (item 12).
                                                                                       Setting option of level 3: between 0 and 100 %.
                                                                                       Factory setting of level 3: 75 %.
                                                                                       Setting option of level 4: cannot be configured.
                                                                                       Factory setting: 100 %.

10                                         Subject to technical modifications of Optima 250 Design
16 - Fine tuning (T2)                                          GE Energy 1/2/3 with modulating bypass: If the tempera-
It is possible to fine tune the room sensor of the control     ture rises 0.5 °C above the temperature set in User Menu
panel so the correct current room temperature is displayed.    item 1, the bypass damper will begin to open. The bypass
Setting option: between -5 and 0 °C.                           is 100 % open when the temperature reaches the set point
Factory setting: -3 °C.                                        in the User Menu Item 1 + the temperature differential set
                                                               in this menu item.
17 - Timer levels 3 and 4                                      To get a smooth opening of the bypass, the temperature
If automatic reconnection is used for speeds 3 or 4, you       at which the bypass is fully open should be set appr. 3 ºC
can enter how many hours the system should run on level        above the set temperature in Use Menu item 1.
3 or 4 before it automatically returns to level 2. The set     GES Energy S/M with ON/OFF bypass: The bypass opens
point can be configured between 1 and 9 hours.                 when the temperature reaches the set point in the User
Setting option: between 1 and 9 hours.                         Menu Item 1 + the temperature differential set in this menu
Factory setting: 3 hours.                                      item.
                                                               Setting option: between 1 and 10 °C.
18 - Filter/stop                                               Factory setting: 3 °C.
To ensure that the filters are changed when the alarm
“Change Filter” flashes on the screen of the control panel,    22 - Regulation water
the set point can be configured to ON. The system will         If a water after heater with a motor-operated valve is
then stop automatically after 14 days if the filters have not  installed in the system it may be necessary to adjust the
been changed.                                                  regulation time.
If this precaution is not required, the set point can be con-  The less regulation time, the faster the motor-operated
figured to OFF and the system will continue to operate.        valve will regulate.
Setting option: ON/OFF.                                        Setting option: between 1 and 250 seconds.
Factory setting: OFF.                                          Factory setting: 20 seconds.

19 - Method of regulation                                      23 - Regulation electricity
There are 3 options:
0. Room regulation (T2 sensor)                                 If an electrical preheater or an electrical after heater is
1. Supply air regulation (T1 sensor)                           installed, it may be necessary to adjust the regulation time.
2. Extract air regulation (T7 sensor)                          Setting option: between 1 and 300 minutes.
If the system is used in a dwelling, supply air regulation is  Factory setting: 3 minutes.
the normal choice. The set point is configured to 1.
For room regulation, configure the set point to 0.             24 - Frost reduction
For extract air regulation, configure the set point to 2.
Setting option: between 0 and 2.                               To avoid icing of the counter current heat exchanger,
Factory setting: 2.                                            the supply air flow can be reduced gradually, when the
                                                               exhaust air temperature after the counter current heat
20 - Preheating                                                exchanger has fallen below the set temperature. This
If preheating is set to ON in item 2 of the User menu, the     function gradually reduces the supply air flow, until the set
set point must be configured to the fresh air temperature,     value has been reached.
at which the preheating should connect.
Setting option: between -15 and 0 °C.                          Caution: May cause negative pressure in the house!
Factory setting: -3 °C.                                        Setting option: between 0 and 10 °C. The function is dis-
                                                               abled if set to 0 °C.
21 - Bypass open                                               Factory setting: 0 °C.
Here you set the temperature at which the bypass should
be 100 % open. You set a temperature differential which        25 - Frost protection
means that if you want the bypass to be 100 % open at
e.g. 23 °C and if the set temperature in User Menu item 1      If a water after heater with motor-operated valve is instal-led
is 20 °C, this menu item should be set to 3 °C.                in the system, a frost protection sensor must be fitted to the
                                                               water after heater and the set point configured to ON.
The bypass will open, provided that:                           If no frost protection sensor is installed, the set point must
1. The exhaust temperature is higher than the outdoor          be configured to OFF.
                                                               Setting option: ON/OFF.
     air temperature.                                          Factory setting: OFF.
2. The outdoor air temperature is above the set tempera-
                                                               26 - Frost protection temperature
     ture in the Service Menu Item 29.
                                                               If frost protection in item 25 is set to ON, the frost protec-
                                                               tion temperature must be configured to the temperature
                                                               where the system should stop and the motor-operated
                                                               valve open completely for the flow of hot water.
                                                               Setting option: between 0 and 10 °C.
                                                               Factory setting: 5 °C.

Subject to technical modifications of Optima 250 Design        11
27 - Help funktion                                                            32 - Humidity max. temperature **)
                                                                              Setting the end point for outside temperature-compensati-
This function can be used for the following:                                  on (T3), see the X-axis on the graph.
                                                                              Setting option: 5-25 °C.
    Setpoint Function                                                         Factory setting: 15 °C.

    0  The relay is off.                                                      33 - Humidity max. value **)
                                                                              Setting the end point for outside temperature compensa-
    1  The relay is on when the system is running. This can e.g. be used      tion, see the Y-axis on the graph (desired max. humidity
                                                                              value).
       to open and close the fresh air damper and the exhaust air damper.     Setting option: 35-85 %.
                                                                              Factory setting: 60 %.
    2  The relay is on when extra heat is required or when the circulating
                                                                              34 - Humidity fan speed **)
       pump should run when heating with water after heating is required.     Setting of how much the fan speed may differ in relation to
                                                                              the desired fan speed. See menu points 11, 12, 14 and 15.
    3  The relay is on when the alarm “Change filter” is active. This can be  Setting option: 5-30 %.
                                                                              Factory setting: 15 %.
       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.

    5  The control can handle an earth heat exchanger by a damper.

       The relay will be on for one of the following two conditions:

       • The outdoor temperature, sensor T9, is lower than the value

       configured in item 26 (frost protection temperature, typically

       set at 5 °C).

       • The outdoor temperature, sensor T9, is more than 1° above

       the temperature configured in item 1 and 1 ° above the cur-

       rent room temperature.

Setting option: between 0 and 5.                                              35 - Humidity regulating frequency **)
Factory setting: 0.                                                           Setting of desired frequency for how often the fan speed
                                                                              may be changed.
28 - System stop                                                              The device is defined as 1 % per unit of time.
Here you choose if it should be possible to stop the sys-                     Setting option: 1-60 min.
tem by pressing the key for speed (K1) in the operating                       Factory setting: 10 min.
menu for 3-4 seconds. If the set point is OFF, the system
cannot be turned off.                                                         Menu point Fan speed 2                          Fan speed 3
Setting option: ON/OFF                                                                                                        Supply air (75 %)
Factory setting: OFF.                                                         11                          Supply air (50 %)   Extract air (75 %)

29 - Turn off bypass                                                          12
To prevent the bypass damper from opening at low fresh
air temperatures and blow cold, not heated air into the                       14                          Extract air (50 %)
dwelling, use this function to configure the lowest fresh air
temperature, at which the damper must be closed. The                          15
value is an expression of the greatest difference that may
exist between the temperature configured in item 1 and                        *) Only displays with integrated Modbus module
the lowest fresh air temperature.                                             **) Only units with integrated humidity sensor
Setting option: between 0 and 20 °C. If 0°C is selected,
the function is turned fully off.                                             Sketch for humidity regulation
Factory setting: 4 °C.
                                                                              Desired RH set-point, see the graph below.
                                                                              Variable fan speed on fresh air, see the graph below.

Please note: It is not recommended to configure the item
without expert advice.

30 - Modbus Mode *)                                                           Desired RH-set point,                               Variable fan speed on fresh air
See separate description for MODBUS.                                          see graph below.                                    side, see graph below.
Setting option: 0-2.
0 = Modbus OFF                                                                               Extract air  Sensor              T3  Fresh air
1 = 9600 Baud                                                                                             location
2 = 19200 Baud
Factory setting: 0.                                                               Supply air                                      Exhaust air

31 - Modbus adresse *)
See separate description for MODBUS.
Setting option: 1-247.
Factory setting: 1.

12                                                   Subject to technical modifications of Optima 250 Design
Outside temperature compensation curve

                                                                                                              S. 32
RH

100%

95

90

85

80

75

70

65                                   S.34
                                                                            S.3 4
60
                                                                                                            S. 33
55

50                                   Ex. 1                                                                           Ex. 2
45

40

35

30

25    Pre-
20
15 setting

10

5

0 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

            = Limits                                                                                                        Fresh air temp. °C

            = Factory setting

            = Examples

                               Example 1
                               At a fresh air temperature of 10°C the RH-value is 55 %.

                               Example 2
                               At a fresh air temperature of 20°C the RH-value is 60 %.

Set point 34
Setting for how much the fan speed may differ in relation to the desired fan speed.

Example:
Set point 34 = ± 15%
With a desired fan speed of 3, the fan speed will be able to fluctuate ± 15 %. Since fan speed 3 is set at 75% in
service menu 12 and 15, the fan speed must be max. 90% and min. 60%.

The same applies to fan speed 2. Since fan speed 2 is set at 50% in service menu 11 and 13, the fan speed must
be max. 65% and min. 35%.

Regulation of the fan speed takes place ±1% for every 10 min.
Setting option: see set point 35.

Fan speed

Level 4 = 100%                 65%          90%
Level 3 = 75%                  ±15%         ±15%
Level 2 = 50%                                60%

                               35%

Level 1 = 30%

                                     Subject to technical modifications of Optima 250 Design                                                    13
5.9 Schedule for week program

                        Monday                                      Tuesday                                                  Wednesday

                 Hours  Minutes Speed  Red. T2               Hours  Minutes Speed  Red. T2                            Hours  Minutes Speed  Red. T2

     1)                                          1)                                                       1)
     2)                                          2)                                                       2)
     3)                                          3)                                                       3)
     4)                                          4)                                                       4)
     5)                                          5)                                                       5)
     6)                                          6)                                                       6)
     7)                                          7)                                                       7)
     8)                                          8)                                                       8)
     9)                                          9)                                                       9)
    10)                                         10)                                                      10)

                 Hours  Thursday       Red. T2               Hours   Friday        Red. T2                            Hours  Saturday       Red. T2

     1)                 Minutes Speed            1)                 Minutes Speed                         1)                 Minutes Speed
     2)                                          2)                                                       2)
     3)                                          3)                                                       3)
     4)                                          4)                                                       4)
     5)                                          5)                                                       5)
     6)                                          6)                                                       6)
     7)                                          7)                                                       7)
     8)                                          8)                                                       8)
     9)                                          9)                                                       9)
    10)                                         10)                                                      10)

                 Hours  Sunday         Red. T2

     1)                 Minutes Speed
     2)
     3)
     4)
     5)
     6)
     7)
     8)
     9)
    10)

Red. T2 = Reduced room temperature
(Night set-back)

14                                              Subject to technical modifications of Optima 250 Design
5.10 Schedule for set points

    Item Headline                       Factory setting  Configuration area                      Date  Date  Date  Date
(4.5) 1 Temperature                            21 °C            10 - 30 °C
                                                 OFF            ON / OFF
        2 Preheating                             OFF            ON / OFF
        3 After heating                          OFF            ON / OFF
        4 Timer levels 3 and 4
        5 Change filter                  3 months          1 - 6 months
        6 Humidity control                      OFF             ON / OFF
(4.8) 10 Level 1 Supply air                     30 %            0 - 100 %
       11 Level 2 Supply air                    50 %            0 - 100 %
       12 Level 3 and 4 Supply air              75 %            0 - 100 %
       13 Level 1 Extract air                   30 %            0 - 100 %
       14 Level 2 Extract air                   50 %            0 - 100 %
       15 Level 3 and 4 Extract air             75 %            0 - 100 %
       16 Fine tuning (T2)                     ÷ 3°C             ÷ 5 - 0 °C
       17 Timer level 3 and 4
       18 Filter/stop                       3 hours           1 - 9 hours
       19 Method of regulation                   OFF            ON / OFF
       20 Preheating                                 2                 0-2
       21 By pass open                                         ÷ 15 - 0 °C
       22 Regulation water                    ÷ 3 °C             1 – 10 °C
       23 Regulation electricity                 3 °C
       24 Frost reduction                                    1 - 250 sec.
       25 Frost protection                   20 sec.           1 - 30 min.
       26 Frost protection temperature        3 min.
       27 Help functions                                         0 – 10 °C
       28 System stop                            0 °C           ON / OFF
       29 Turn off bypass                        OFF             0 - 10 °C
    30 *) Modbus Mode                            5 °C
    31 *) Modbus Address                                               0-5
  32 **) Humidity max. temperature                   0          ON / OFF
  33 **) Humidity max. value                     OFF             0 - 20 °C
  34 **) Humidity fan speed                      4 °C
  35 **) Humidity regulating frequency                                 0-2
                                                     0              1 - 247
                                                     1           5 - 25 °C
                                              15 °C             35 - 85 %
                                               60 %               5 - 30 %
                                               15 %            1 - 60 min.
                                           10 mIn.

*) Only displays with integrated Modbus module
**) Only units with integrated humidity sensor

                                        Subject to technical modifications of Optima 250 Design                          15
6. Function                                                   same way as an electrical after heater.

6.1 Controlling Optima 250                                    6.3 Operating reliability

Regulation of room temperature                                Safety thermostat
There are 3 methods of regulation – see service menu          If an error occurs on an electrical heater, the safety ther-
item 19. If the supply air regulation has been selected, the  mostat will disconnect.
control will blow in air with the temperature set, provided   The heater is equipped with a fire thermostat that automat-
that an after heater is fitted to the system. The supply air  ically cuts off the power supply, if the temperature exceeds
temperature is regulated by the supply air sensor T1.         80 °C. If the temperature decreases, the heater automati-
It is recommended to configure the supply air temperature     cally re-engages.
2-3 °C below the room temperature.                            As an additional security there is a built-in thermal cut-out,
                                                              which disengages if the temperature exceeds 110 °C. Re-
Relay R8                                                      engaging must be done manually.
When the system is running at levels 1, 2, 3 or 4, the relay  Does not apply to PTC electrical heaters.
will be turned on. This function can be used to e.g. control
the fresh air damper or the exhaust air damper.               Remember to disconnect the power to the system
                                                              before performing an operation.
6.2 Extra capacity

Water reheating
For systems with water reheaters the motor-operated
reheater will begin to regulate (PI regulation) when the
temperature has fallen 1 °C below the temperature set.

Electrical reheating
For systems with electrical reheaters the reheater will
connect when the temperature has fallen 1 °C below
the temperature set. If the regulation time is set to e.g. 3
minutes, the temperature sensor T1 will measure if the
temperature is now above or below the temperature set
after 3 minutes. If the temperature is still below the tem-
perature set, the reheating will keep running. When the
temperature reaches the value set, the electrical reheater
will disconnect.

Bypass
GE Energy 1/2/3 w/ bypass: They are equipped with a
modulating bypass. If the room temperature increases to
0.5 °C above the set temperature, the bypass will begin to
open. The bypass is fully open when the temperature set
in the Service menu item 21 is reached, e.g. 5 °C above
the set / desired temperature.
GES Energy S / M w/ bypass: They are equipped with an
ON/OFF bypass. The bypass opens completely when the
temperature set in the Service menu item 21 is reached,
e.g. as 5 ° C above the set / desired temperature.

If the bypass function is set to ON, the bypass damper will
normally open, but if the outdoor temperature (T3) is 1 °C
higher than the extract air temperature (T7), the bypass
damper will close in order to utilise the “free” cooling of
the supply air that the counter current heat exchanger can
provide.
If an extra refrigerant device is fitted to the system, this
will turn on when the bypass valve is open completely and
turn off again when the bypass valve begins to turn off
again.
Systems with an electrical preheater will regulate in the

16  Subject to technical modifications of Optima 250 Design
7. Maintenance                                                          water); only careful dust removal from air intake surfaces
                                                                        with a household vacuum cleaner.
Follow the following instructions to achieve optimal
performance:                                                           Fans:
                                                                       Inspect the two fan wheels for dirt each year. If they are
               Before opening the unit, turn off the power/            dirty, they can be washed using a brush, bottle cleaner,
               pull out the plug and wait until the fans have          etc.
               stopped completely.
                                                                       Supply air and extract air valves:
A couple of days after the primary installation, check that            Clean the valves by wiping with a dry cloth. Be careful that
the condensation outlet is working.                                    the valves do not turn, so that the air volume changes.

Environmental requirements                                             7.2 Alarms
When repairing or dismantling the unit, statutory environ-
mental regulations must be observed regarding recycling                Filter timer
and destruction of various materials.                                  The control has a filter timer to guarantee that the filter is
                                                                       changed and that optimal operation is established. When
7.1 Unit                                                               the timer reaches the set value, “Chg. filter” will flash in
                                                                       the display until the filters have been changed.
Filters                                                                When the filters have been changed, the button for the
When the alarm “Change filter” flashes in the control panel            filter symbol must be held down until ”Alarm!”, “Chg. Filter”
display, the filters must be changed. Stop the system by               and the exclamation mark disappears and the unit reverts
the circuit breaker of the unit or by the circuit breaker on           to normal operation.
the terminal board. Open the front cover/filter drawers and
remove the filters. After having changed the filters, reset            Com error
the filter timer. The time interval for cleaning/changing the          This error appears when there is no communication
filters can be adjusted in the operating menu.                         between the display and control. Check that the wiring is
                                                                       correct on terminals 21 to 24.
               There is a danger of cuts from sharp discs.
               The discs must not be damaged.                                             21 Signal
               Vacuum cleaning or using pressurised air on                                22 Signal
               the filters is not recommended.                                            23 10 Volt
               Filter performance may be impaired.                                        24 0 Volt

                         G4 = Standard filter (basic filter class G4)  Frost protection error
                         F5 = Fein filter (fine filter class F5)       This error message will be displayed if a water reheater
                         F7 = Pollen filter (fine filter class F7)     is fitted to the system and the temperature of the water
                                                                       reheater is too low, causing a danger of frost burst.
                                                                       The control will stop the system and open the motor-
                                                                       operated valve to keep the heater warm.

Condensation drain:                                                    7.3 Dismantling/taking the system out
When changing the filter in August/September before                    of service
the outside temperature falls to 5 °C, check that the
condensation drain is not blocked with dirt and make sure              The following must be done:
that there is water in the water trap. Pour 1 litre of water           The power supply, i.e. the power cables, must be discon-
into the condensation tray and make sure it runs off freely.           nected. Disconnect the condensation outlet and power
If the condensation drain does not work, this could lead to            cables for any reheater/preheater. Disconnect cables for
water damage in the home.                                              the control panel and dismantle ducts.

Heat exchanger:                                                        If the system should to be taken out of service, the ducts
Inspect the heat exchanger every year. If it is dirty, remove          must be dismantled to avoid condensed water in the sys-
it and:                                                                tem and in the ducts. Close all supply air and extract air
- Alu-exchanger: Wash in lukewarm soapy water and rinse                valves.

 using a hand shower if necessary.
- Plastic exchanger: No cleaning with fluids (including

Subject to technical modifications of Optima 250 Design                17
8. Troubleshooting                                                   ing thermostat (only units with electrical reheater
                                                                     installed).
8.1 Safety thermostat in electrical                             • Air in the heating pipes, faulty thermostat / motorvalve,
heater (optional equipment)                                          incorrect setting of control panel.

If an error occurs on an electrical heater, the safety ther-    Within the guarantee period (0-2 years):
mostat will disconnect.                                         The installer from whom you have bought the system.
The heater is equipped with a fire thermostat that auto-
matically cuts off the power supply, if the temperature         After the guarantee period (2 years ->):
exceeds 80 °C. If the temperature decreases, the heater         The installer from whom you have bought the system or
automatically re-engages.                                       the Genvex service department (+45 7353 2765).
As an additional security there is a built-in thermal cut-out,
which disengages if the temperature exceeds 110 °C. Re-         Before calling, please write down the data from the inscrip-
engaging must be done manually.                                 tion plate (silver plate on the unit).
Does not apply to PTC electrical heaters.

8.2 The system is not running

Unit stopped
Possible error:
• Fuse in main board has blown, no power to unit.
• One of the fuses on the circuit board of the unit is-

     blown.
• Loose wire, no power to unit.
• Loose wire between unit and control panel.
• Faulty or incorrectly set week program.
• Filter timer has switched the system off.

Condensed water is leaking from the unit
Possible error:
• Condensation outlet blocked by dirt.
• The condensation outlet is not adequately protected

     against freezing at low outdoor temperatures.

8.3 Air faults

No supply air:
Possible error:
• Faulty supply air fan
• Clogged supply air fi lter
• Clogged fresh air grill due to dirt and leaves during the

     fall and snow and ice during the winter.
• Fuse on the circuit board is blown.
• The unit is in defrost mode (supply air fan stops)
• Incorrect value set in User menu item 2.

No extract air:
Possible error:
• Faulty extract air fan
• Clogged extract air fi lter.
• Fuse on the circuit board is blown

Cold supply air:
Possible error:
• Clogged heat changer.
• Faulty extract air fan.
• Clogged extract air filter.
• Electrical reheater is disconnected at the over heat-

18  Subject to technical modifications of Optima 250 Design
Our Units and Controls – Your Choice

Genvex has more than 40 years of experience in creating quality units   Today’s and future construction place greater and greater requirements
providing optimum indoor climate with excellent energy efficiency. Our  for energy-friendly, yet compact systems. We at Genvex are aware of
systems employ the newest technologies in heat recovery and have        this and are continuously developing solutions that meet these needs.
heat recovery rates of up to 96%. The systems are continuously          For example, a brilliant solution for decentralised housing ventilation is
optimised with the newest technologies.                                 a range hood solution with full integration to the system’s control which
                                                                        ensures that the most efficient ventilation system is achieved with the
Advanced controls ensure that as little energy as possible is used for  simplest installation.
reaching an optimum level of comfort.

Genvex A/S • Sverigesvej 6 • DK-6100 Haderslev • Tel.: +45 73 53 27 00 • salg@genvex.dk • genvex.dk
