Optima 250 Design - Genvex

Version 2013.03.07Operating instructionsuKOptima 250 DesignPassive ventilation/Heat recoveryDisplay 2.3a/ Version 3,2b/ES652/ES960-PCBORIGINALw w w .g e nvex.dkGenvex A/S Sverigesvej 6 DK-6100 Haderslev Tlf.: +45 7353 2700 www.genvex.dk

Table of contents1. Control panel........................................................................ 3Side2. Installation............................................................................. 33. Start-up................................................................................... 34. Operating............................................................................... 44.1 Operating and changing date in the operating menu................ 44.2 Main menu................................................................................. 54.3 Date and time............................................................................ 54.4 Calendar.................................................................................... 64.5 User menu................................................................................. 64.6 Display menu............................................................................. 74.7 Info menu.................................................................................. 94.8 Service menu.......................................................................... 104.9 Schedule for week program.................................................... 134.10 Schedule for set points ......................................................... 145. Function............................................................................... 155.1 Controlling............................................................................... 155.2 Extra capacity.......................................................................... 155.3 Operating reliability.................................................................. 156. Maintenance........................................................................ 166.1 Unit......................................................................................... 166.2 Alarms (error messages)......................................................... 166.3 Dismantling/taking the system out of service.......................... 167. Troubleshooting................................................................ 177.1 Safety thermostat in electrical heater (optional equipment)......... 177.2 The system is not running ..................................................... 177.3 Error on air side....................................................................... 172Subject to technical modifications of Optima 250 Design

1. Control panelThe control panel must be mounted on an interior wall thatis centrally located in the home.Since the control panel at the same time functions as aroom thermostat, it is important to observe the following:• Do not expose the control panel to direct sunlight• Do not place the control panel on an outer wall• Do not recess the control panel in the wall• Do not place the control panel over a heat sourceA lamp close to the control panel can affect the lightsensor so that the control panel will not regulate the lightintensity as intended.On the front of the control panel in the ring there are 7keys that are used to operate the panel. The function ofthe keys changes depending on the menu selected.(More information is available under Operation).There is an infrared movement sensor located under theglass screen. Simply by moving your hand past the controlpanel you can bring up the menu for daily operatingoptions. (This function can be turned off:See under Main menu/Display/Menu item 5).The following are located at the bottom of the controlpanel:1: SD card2: Room sensor3: Light sensor4: Mini USB port for connection to computer1: The removable SD card contains all the control modelsand versions that make the control panel compatible witholder versions. The SD card also contains all the languages,menus, help texts, symbols and collected data logs.During the start-up procedure, the current versions areinstalled in the control panel so that the control can functionwithout the SD card. However, the help texts will notappear in the display and the data logs will not be saved.3. Start-upThe first time the system is started, the control panel displaywill show: “Choose language”.Click “Next” to switch between Danish, English, Germanand French. Press “Enter” when the desired language isshown in the display. The control panel will now load thecurrent program version in the selected language.The display will show:• Updating model (loading the current model)• Wait 1.5 minutes (It takes approximately 1.5 minutes toload the current version)• Language load (91)• Language OK• Menu load (84)• Menu OK• Icon load (369)• Menu OK• Reset to default• Restarting……..• Optima 250 UKThe display will then change to:• The Genvex logo• Optima 250 UK• Version numberD (Control panel): X.XC (Main board): X.XFinally, the display changes to daily operation and thesystem is now in operation with the factory setting which isonly a basic setting.The system is now ready to be adjusted with the mostoptimal air flows and the operational desires and demandsfor the dwelling in question, e.g. weekly operation,temperatures etc. to achieve the most effective utilisationand operation of the system.4: In order for a computer to read the data logs,the Genvex data logger program must be installed.2. InstallationPlease see the installation guide.Subject to technical modifications of Optima 250 Design3

4. OperatingOptima 250All Genvex ventilation units of the types GE Energy, GESEnergy and GEU for dwellings are delivered with theOptima 250 control, which has a factory setting so that thesystem can be put into operation without further setting.The factory setting is only a basic setting that should beadapted to the operating desires and demands for thedwelling in question to achieve the most effective utilisationand operation of the system.4.1 Operating and changing date in theoperating menuNormally the symbols for daily operating options aredisplayed and the following keys can be seen.K1K2Daily operation is divided in 7 menu itemsK3K4K5K7K6K1 - SpeedUse this function to set the fan speed to levels 0-1-2-3-4.Use the key next to the “Speed” symbol to change betweenthe 4 speeds. The system can also be stopped byholding down the key for 3-4 seconds.K2 - Forced operation (Party mode)Use this function/key to set the timer to party mode from0 to 9 hours. If the number of hours is set to 0, speeds 3and 4 will run until the speed is changed manually. If thethe number of hours is set between 1 and 9 hours, speeds3 and 4 will automatically reconnect to speed 2 after thenumber of hours configured, on condition that item 28 ofthe Service menu is set to ON.K3 - After heatingUse this function to switch the after heating on and off. Onthe key next to the symbol “After heating” you can changebetween “+” and “÷”. If the symbol is set to “+” and thesystem is equipped with an after heater the after heatingwill commence as required. If the symbol is set to “÷”, theafter heating will not commence, even if required.K4 - Main menuUse this function to enter the main menu and access thesub-items Date and time, Calendar, User menu, Display,Info operation and Service menu.K5 - FilterUse this function to reset the filter alarm. The key next tothe “Filter” symbol resets the alarm for filter change. Toreset the filter alarm, change the filters and hold down thekey with the “Filter” symbol until the exclamation mark inthe symbol disappears.K6 - InformationUse this function to get an overview of the current operatingcondition, e.g. temperatures, fan settings, relay status/function ON/OFF, alarms, timers etc.Use the key next to the symbol “Info” to read the operatingcondition of the unit (more information can be found in themain menu section under the item Info operation).K7 - TemperatureUse this function to set the room temperature if the system isequipped with an after heater and/or a bypass damper. Pressthe key next to the “Temperature” symbol to enter the desiredtemperature between 10 and 30 °C. The current temperaturewill be displayed at the centre of the screen.Press the key K4 to enter the main menu and sub-menus andthe following keys change function:K3 changes to “Arrow down ” and when changing thesetting to “÷”.K4 changes to “Enter”. Press “Enter” to proceed throughthe menus and sub-menus.K5 changes to “Arrow up” and when changing the settingto “+”.K6 changes to “Exit”. Press “Exit” to return to the previousscreen.K7 changes to “Help”. Press “Help” to see a short guideto the current menu item.The horizontal arrow in the menu shows the currentlocation. To save changes to a menu item, finish bypressing “Enter”.4Subject to technical modifications of Optima 250 Design

4.2 Main menuThere is a “Book” symbol at the bottom centre of thescreen with the daily operating options. Press this key toenter the main menu.4.3 Date and timeUse this function to set the date and time.This menu is divided into 6 sub-menu itemsThis menu is divided into 6 menu itemsDate and time (item 4.3)Calendar (item 4.4)User menu (item 4.5)Display (item 4.6)Info operation (item 4.7)Service menu (item 4.8)“Arrow down” or “Arrow up” will change the symbol to ahorizontal arrow that shows the current location.01 HoursEnter the current hour here.When changing between summer and winter time youhave to set the time one hour forward or back manually.02 MinutesEnter the current minute here.03 WeekdayEnter the current weekday here.04 DateEnter the current date here.05 MonthEnter the current month here.06 YearEnter the current year here.Press “Enter” to access the sub-items of the current menu.Press “Arrow down” or “Arrow up” again to select the requiredsub-menu item. When the horizontal arrow is nextto a sub-menu item, the 2 lines will change place, the fontsizes will change and the text “Set” will be added. Pressing”Enter” next to the selected sub-menu item will changethe background of the item to grey. Use the ”+” and ”÷”keys to change the current value. Press “Enter” again tosave the change.If no changes are required, press “Exit” to go back out ofthe menus. Press “Help” to see a short guide to the menuitem. Press one of the keys to exit the help program.After a short period of non-activity, the control will automaticallyexit the programs.WeekdayMonday 1Tuesday 2Wednesday 3Thursday 4Friday 5Saturday 6Sunday 7MonthJanuary 1February 2March 3April 4May 5June 6July 7August 8September 9October 10November 11December 12Subject to technical modifications of Optima 250 Design5

4.4 CalendarUse this function to configure the setting of each day ofthe week. Each day can be configured to run with differentfan speeds as required. You can copy the configurationfrom one day to another. You can choose ON or OFFhere, i.e. if for a period of time there is nobody home, thedaily settings can be turned off and the system will run accordingto a manual setting, e.g. level 1.This menu is divided in 9 sub-menu items03 to 08These days can be filled in individually in the same way asunder item 02.09 Copy dayUse this menu item to copy one day to another, where thesame switching times, speeds and temperature loweringare required.For example: From Thursday to Tuesday.4.5 User menuThis menu is divided into 5 sub-menu items01 - CalendarChoose between controlling the system manually or controllingthe speed (air exchange) and temperature automaticallyaccording to a fixed day program. If the menuitem is set to OFF, the system will be controlled manuallyaccording to the speed and temperature selected.If the menu item is set to ON, the system will be controlledaccording to the day programs entered in the menu items02 to 08.Setting option: ON/OFF.Factory setting: OFF.02 - MondayUp to 10 switching times can be entered for one day. Thetimes can be entered in random order. Enter the hours in thefirst column, the minutes in the second and the speed in thethird column. Use the fourth column to enter the temperaturedifference by which the temperature should be lowered.Example: If the temperature is set to 21 °C and you enter– 2.0 °C, the system will aim at 19 °C.If the speed has been changed manually on the key underdaily operation, the program will return to the day programwhen the next switching time is passed.Examples of a day program:01 07:30 H3 -0,002 09:15 H1 -1,003 17:00 H3 -0,004 18:00 H2 -0,005 23:30 H2 -2,0It is not necessary to use all switching times. If the line ismarked by 0, it will be skipped by the control.01 - TemperatureSet the desired temperature between 10 and 30 °C.In item 19 of the Service menu you can choose betweensupply air regulation, room regulation or extract air regulation.(The sensor is mounted in the control panel).Setting option: between 10 and 30 °C.Factory setting: 21 °C.02 - PreheatingIf a preheater is fitted to the fresh air duct the set point mustbe configured to ON. Enter the desired preheating temperaturein item 20 of the Service menu. If instead a refrigerantdevice is installed in the supply air duct the set point must beconfigured to OFF. (It is not possible to control a preheaterand a refrigerant device at the same time). If both types ofoptional equipment are installed, the set point must be configuredmanually in spring and autumn. If none of the helpfunctions in item 27 of the Service menu are used, the helpfunction 4 can be used to control the additional cooling.Setting option: ON/OFF.Factory setting: OFF.03 - After heatingIf a after heater is fitted to the system it is optional if the afterheater should operate. If the set point is configured to OFFthe after heater will not operate, even if required. Is the setpoint configured to ON the after heater will engage as required.It regulates according to the temperature set in item1 of the User menu.Setting option: ON/OFF.Factory setting: OFF.6Subject to technical modifications of Optima 250 Design

04 - Timer levels 3 and 4At speeds 3 and 4, the system will automatically reconnectto speed 2 after the number of hours set in item 17 of theService menu by configuring the set point to ON. If the setpoint is set to OFF, the system will run at speed 3 or 4 untilit is manually changed to another speed. The timer canalso be operated directly on the key next to the symbol for“Party mode” on the screen for daily operating options.Setting option: ON/OFF.Factory setting: OFF.05 - Change filterA filter timer is built-in counting how long the system hasbeen running since the last change of filter. The set pointcan be set between 1-6, which corresponds to 1-6 months.It is recommended that the set point should initially be setto 3, corresponding to 3 months.If the filters are too dirty after the period configured, setthe set point to a lower number. If it is not necessary tochange the filters after the configured period, the set pointcan be set to a larger number.When the timer reaches the configured value for thechange of filter, the alarm “Change filter” will flash at thetop of the screen saver.When the filters have been changed, return to the screenwith daily operating options and hold down the key for the“Filter” symbol until the exclamation mark disappears andthe system returns to normal operation.Setting option: between 1 and 6 months.Factory setting: 3 months.4.6 Display menuThe menu item with the “Display” symbol.Use this function to configure the following sub-menuitems.This menu is divided in 18 sub-menu items01 - LanguageChoose between Danish, English, German or French textin the display.02 - Program infoThis menu shows which Optima is fitted on the systemand its version number:Example: Optima 250 UK D: 1.0 C: 3.0D represents the version number of the control panel.C represents the version number of the main board.03 - Screen saver.The following settings can be selected here:0: Screen saver off (daily operating options are displayed)1: Screen saver off, but with light dimming2: Room temperature + light dimming3: Clock + light dimming4: Clock and Room temperature + light dimming5: Black screen + light dimmingSetting option: between 0 and 5.Factory setting: 3.04 - Pause timeUse this to set the period from no operation of the symbolson the screen for daily operation until the screen automaticallyreturns to the screen saver. From daily menuto screen saver variable from 1 to 10 minutes. The otherautomatic return connections cannot be adjusted. If nokey has been pressed within the time intervals indicatedbelow, it will automatically return to the previous screen:-Change in menu item back to menu item = 30 seconds-From menu item to main menu = 2 minutes-From menu item to daily menu = 2 minutesSetting option: between 1 and 10 minutes.Factory setting: 10 minutes.05 - Auto wake-upIt is possible to deactivate the “Auto wake-up” function,where you can change from the screen saver to thescreen with the symbols for the daily operating options bymoving your hand past the control panel.If the function is set to OFF, press any key to display thedaily operating options.Setting option: between 0 and 4.Factory setting: 1.”0” OFF”1” Max sensitive”2” Level 2”3” Level 3”4” Least sensitive06 - Auto lightnessIn the display there is a movement sensor.Setting option: ON/OFF.Factory setting: ON.Subject to technical modifications of Optima 250 Design7

12 - Safety menuIt is possible to prevent access to selected main menuitems so that they can only be changed with a password,which is a 4-digit figure. The first time, press 4 times 0 andthen “Enter”. Items 13 to 18 will open. Select the passwordin item 18, which in future will also be the password to accessthe menu items 13 to 18.07 - Lightness dayUse this to enter the maximum brightness level for thecontrol panel when the room is fully lit.Setting option: between 0 and 100 %.Factory setting: 100 %.08 - Lightness nightUse this to enter the minimum brightness level for thecontrol panel when the room is in complete darkness.Setting option: between 0 and 100 %.Factory setting: 30 %.09 - Lightness day screen saverUse this to enter the maximum brightness level for thescreen saver when the room is fully lit.Setting option: between 0 and 100 %.Factory setting: 50 %.10 - Lightness night screen saverUse this to enter the minimum brightness level for thescreensaver when the room is in complete darkness.Setting option: between 0 and 100 %.Factory setting: 0 %.11 - Reset to factory settingsIf the set points are configured so that the system doesnot function as expected and the cause cannot be established,there are 2 different options to reset the menuitems to the factory settings.- Press 1 to change all menu items to the factory settingsexcept for the menu items for Speed (Level), Filter timer,Calendar and Defrost temperatures.- Press 2 to change all menu items to the factory settings.Note: Before performing a reset, ensure that the currently enteredvalues are noted in the “Table for set values” page 14.Setting option: between 0 and 2.Factory setting: 0 mode.13 - Date and timeIf this item is set to ON, it will not be possible to enter themenu for Date and time without using the selected passwordin item 18.Setting option: ON/OFF.Factory setting: OFF.14 - CalendarIf this item is set to ON, it will not be possible to enter themenu for Calendar without using the selected password initem 18.Setting option: ON/OFF.Factory setting: OFF.15 - User menuIf this item is set to ON, it will not be possible to enter theUser menu without using the selected password in item 18.Setting option: ON/OFF.Factory setting: OFF.16 - DisplayIf this item is set to ON, it will not be possible to enter themenu for Display without using the selected password initem 18.Setting option: ON/OFF.Factory setting: OFF.17 - Service menuIf this item is set to ON, it will not be possible to enterthe Service menu without using the selected password initem 18.Setting option: ON/OFF.Factory setting: OFF.8Subject to technical modifications of Optima 250 Design

18 - PasswordEnter the selected password here and use this also initem 12 to enter items 13 to 18. If you forget your password,contact Genvex Service department for assistance.To change the password, enter a new password in thisitem and press “Enter”. The password has now beenchanged.4.7 Info operationThe Info operation menu provides an overview of thecurrent operating status of the system. If you want to seethe operating status of the system over a period of operation,connect the control panel to a computer and usethe Optima data logger program. The system monitorsthe operating status every minute and stores the data forup to one year on the SD card.This menu is divided in 5 pagesCurrent temperaturePress “Enter” next to the info operation menu. The firstscreen displayed shows the current temperatures.Supply air in %Extract airin%Bypass damper in %Water valve in %Bypasson/offCurrent setting of operation relaysPress “Arrow down” again to display the current status ofthe operation relays.R2 After heatingR3 PreheatingR8 System in operationR9 Help relay 9T1T2T3T4T7T8T9Supply airRoomFresh airExhaust airExtract airFrost protectionExtra sensorCurrent fan speedPress “Arrow down” to display the current percentage fanspeeds and the opening of the bypass damper and of thewater valve.Subject to technical modifications of Optima 250 Design9

Current list of alarmsPress “Arrow down” again to display the current alarms.An alarm it is activated if ON appears beside it. At ONthere is an alarm, which can also be seen on the screensaver and the display for daily operating options. At the topit says alarm. The Info operation menu shows the type ofalarm. When the timer for changing filter reaches the setvalue, the alarm “Change filter” will flash at the top of thescreen saver.The alarm will read OFF when the error has been correctedor the filter is changed and reset.4.8 Service menuUse this function to configure the following sub-menu items.This menu is divided in 20 sub-menu itemsAlarm Status Error at ”ON”Control stopped ON/OFF Filter not changed after 14 days/ Frost protectionerror/The system is equipped with an externalswitch between terminals 28 and 29. “Alarm” will bedisplayed when these are short-circuited and thesystem has stopped.Change filter ON/OFF The filters should be changed.Frost protection ON/OFF The temperature of the water after heater is too low(frost danger).Com error ON/OFF The control panel cannot communicate with the mainboard between display and printed circuit board).Hour counters (2 pages)Press “Arrow down” again to display the hour counters,which count from the day the system is put into operation.The figures shown should be multiplied by 10. This showshow many hours the system has been running, how manyhours the system has run at the various speeds and howmany hours the relays have been connected (ON).Total tidLevel 0Level 1Level 2Level 3Level 4Relay 2 After heatingRelay 3 PreheatingRelay 8 System in operationRelay 9 Help functionPress “Exit” to return to the main menu.10 - Level 1 Supply airLevel 1, which is the lowest speed, is usually used whenthere is nobody home. Both fans can be configured independentlyof each other for all levels so that the air flow inthe supply air and in the extract air is equal, which providesoptimal operation.The adjustment of the system must be performed withspecialised air measurement equipment and can be performedwithout the use of the main regulating damper.It is not recommended to configure the air flows withoutexpert advice. Incorrect configuration can lead to majorenergy consumption or unpleasant indoor climate.Setting option: between 0 and 100 %.Factory setting: 30 %.11 - Level 2 Supply airLevel 2 is the recommended speed of the system in orderto provide the optimal indoor climate and it should beadjusted to the ventilation requirement of the dwelling.Setting option: between 0 and 100 %.Factory setting: 50 %.12 - Levels 3 and 4 Supply airLevel 3 is the highest speed that can be configured. It isused e.g. if there are many guests or there is a lot of activityin the kitchen.Setting option of level 3: between 0 and 100 %.Factory setting of level 3: 75 %.Level 4 is used mainly in summer to lower the indoortemperature. Remember that a higher air exchange rateincreases the energy consumption.Setting option of level 4: cannot be configured.Factory setting: 100 %.13 - Level 1 Extract airThe fan speed is adjusted until the same air flow isachieved as the supply air on level 1.Setting option: between 0 and 100 %.Factory setting: 30 %.10Subject to technical modifications of Optima 250 Design

14 - Level 2 Extract airThe fan speed is adjusted until the same air flow isachieved as the supply air on level 2.Setting option: between 0 and 100 %.Factory setting: 50 %.15 - Levels 3 and 4 Extract airThe air flow of level 3 is adjusted to the same air flow asthe 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 %.If the system is used in a dwelling, supply air regulation isthe normal choice. The set point is configured to 1.For room regulation, configure the set point to 0.For extract air regulation, configure the set point to 2.Setting option: between 0 and 2.Factory setting: 1.20 - PreheatingIf preheating is set to ON in item 2 of the User menu, theset point must be configured to the fresh air temperature,at which the preheating should connect.Setting option: between -15 and 0 °C.Factory setting: -10 °C.21 - Bypass openIf the temperature rises 0,5 °C above the temperature setin item 1 of the User menu, the bypass damper will beginto open, provided that:1. The extract air temperature is higher than the fresh airtemperature2. The fresh air temperature is higher than the temperatureset in item 29.16 - Fine tuning (T2)It is possible to fine tune the room sensor of the controlpanel so the correct current room temperature is displayed.Setting option: between -5 and 0 °C.Factory setting: -3 °C.To have a smooth opening of the bypass damper, the temperatureat fully open bypass damper should be approx. 3°C above the temperature set in item 1 of the User menu.Setting option: between 1 and 10 °C.Factory setting: 3 °C.17 - Timer levels 3 and 4If automatic reconnection is used for speeds 3 or 4, youcan enter how many hours the system should run on level3 or 4 before it automatically returns to level 2. The setpoint can be configured between 1 and 9 hours.Setting option: between 1 and 9 hours.Factory setting: 3 hours.18 - Filter/stopTo ensure that the filters are changed when the alarm“Change Filter” flashes on the screen of the control panel,the set point can be configured to ON. The system willthen stop automatically after 14 days if the filters have notbeen changed.If this precaution is not required, the set point can be configuredto OFF and the system will continue to operate.Setting option: ON/OFF.Factory setting: OFF.19 - Method of regulationThere are 3 options:0. Room regulation (T2 sensor)1. Supply air regulation (T1 sensor)2. Extract air regulation (T7 sensor)22 - Regulation waterIf a water after heater with a motor-operated valve isinstalled in the system it may be necessary to adjust theregulation time.The less regulation time, the faster the motor-operatedvalve will regulate.Setting option: between 1 and 250 seconds.Factory setting: 20 seconds.Subject to technical modifications of Optima 250 Design11

23 - Regulation electricityIf an electrical preheater or an electrical after heater isinstalled, it may be necessary to adjust the regulation time.Setting option: between 1 and 300 minutes.Factory setting: 3 minutes.24 - Frost reductionTo avoid icing of the counter current heat exchanger,the supply air flow can be reduced gradually, when theexhaust air temperature after the counter current heatexchanger has fallen below the set temperature. Thisfunction gradually reduces the supply air flow, until the setvalue has been reached. The function is only active, whenthe set point is above 0 °C.Setting option: between 0 and 10 °C.Factory setting: 3 °C.25 - Frost protectionIf a water after heater with motor-operated valve is instal-ledin the system, a frost protection sensor must be fitted to thewater after heater and the set point configured to ON.If no frost protection sensor is installed, the set point mustbe configured to OFF.Setting option: ON/OFF.Factory setting: OFF.26 - Frost protection temperatureIf frost protection in item 25 is set to ON, the frost protectiontemperature must be configured to the temperaturewhere the system should stop and the motor-operatedvalve open completely for the flow of hot water.Setting option: between 0 and 10 °C.Factory setting: 5 °C.27 - Help funktionThis function can be used for the following:SetpointFunction0 The relay is off.1 The relay is on when the system is running. This can e.g. be usedto open and close the fresh air damper and the exhaust air damper.2 The relay is on when extra heat is required or when the circulatingpump should run when heating with water after heating is required.3 The relay is on when the alarm “Change filter” is active. This can beused to activate an external alarm.4 The relay is on when extra cooling is required. This function is usedif 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 valueconfigured in item 26 (frost protection temperature, typicallyset at 5 °C).• The outdoor temperature, sensor T9, is more than 1° abovethe temperature configured in item 1 and 1 ° above the currentroom temperature.Setting option: between 0 and 5.Factory setting: 0.28 - System stopHere you choose if it should be possible to stop the systemby pressing the key for speed (K1) in the operatingmenu for 3-4 seconds. If the set point is OFF, the systemcannot be turned off.Setting option: ON/OFFFactory setting: OFF.29 - Turn off bypassTo prevent the bypass damper from opening at low freshair temperatures and blow cold, not heated air into thedwelling, use this function to configure the lowest fresh airtemperature, at which the damper must be closed. Thevalue is an expression of the greatest difference that mayexist between the temperature configured in item 1 andthe lowest fresh air temperature.Setting option: between 0 and 20 °C. If 0°C is selected,the function is turned fully off.Factory setting: 4 °C.Please note: It is not recommended to configure the itemwithout expert advice.12Subject to technical modifications of Optima 250 Design

4.9 Schedule for week programMondayHours Minutes Speed Red. T2TuesdayHours Minutes Speed Red. T2WednesdayHours Minutes Speed Red. T21)2)3)4)5)6)7)8)9)10)1)2)3)4)5)6)7)8)9)10)1)2)3)4)5)6)7)8)9)10)ThursdayHours Minutes Speed Red. T2FridayHours Minutes Speed Red. T2SaturdayHours Minutes Speed Red. T21)2)3)4)5)6)7)8)9)10)1)2)3)4)5)6)7)8)9)10)1)2)3)4)5)6)7)8)9)10)SundayHours Minutes Speed Red. T21)2)3)4)5)6)7)8)9)10)Red. T2 = Reduced room temperature(Night set-back)Subject to technical modifications of Optima 250 Design13

4.10 Schedule for set pointsItem Headline Factory setting Configuration area Date Date Date Date(4.5) 1 Temperature 21 °C 10 - 30 °C2 Preheating OFF ON / OFF3 After heating OFF ON / OFF4 Timer levels 3 and 4 OFF ON / OFF5 Change filter 3 months 1 - 6 months(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 / 100 % 0 - 100 %16 Fine tuning (T2) ÷ 3°C ÷ 5 - 0 °C17 Timer level 3 and 4 3 hours 1 - 9 hours18 Filter/stop OFF ON / OFF19 Method of regulation 1 0 - 220 Preheating ÷ 10 °C ÷ 15 - 0 °C21 By pass open 2 °C 2 – 10 °C22 Regulation water 20 sec. 1 - 250 sec.23 Regulation electricity 3 min. 1 - 30 min.24 Frost reduction 5 °C 0 – 10 °C25 Frost protection OFF ON / OFF26 Frost protection temperature 5 °C 0 - 10 °C27 Help functions 0 0 - 528 System stop OFF ON / OFF29 Turn off bypass 4 °C 0 - 20 °C14Subject to technical modifications of Optima 250 Design

5. Function5.1 Controlling Optima 250Regulation of room temperatureThere are 3 methods of regulation – see item 19 of themenu. If the supply air regulation has been selected, thecontrol will blow in air with the temperature set, providedthat an after heater is fitted to the system. The supply airtemperature is regulated by the supply air sensor T1. It isrecommended to configure the supply air temperature 2-3° below the room temperature.The use of room regulation or extract air regulation is notrecommended in normal habitation.5.3 Operating reliabilitySafety thermostatIf an error occurs on an electrical heater, the safety thermostatwill disconnect. To reconnect the safetythermostat press the small button in the centre of the thermostat.The thermostat is located on the electrical heater.Does not apply to PTC electrical heaters.Remember to disconnect the power to the systembefore performing an operation.Relay R8When the system is running at levels 1, 2 or 3, the relaywill be turned on. This function can be used to e.g. controlthe fresh air damper or the exhaust air damper.5.2 Extra capacityWater after heatingFor systems with water after heaters the motor-operatedvalve will begin to regulate (PI regulation) when the temperaturehas fallen 1° below the temperature set.Electrical after heatingFor systems with electrical after heaters the after heatingwill connect when the temperature has fallen 1° belowthe temperature set. If the regulation time is set to e.g. 3minutes, after 3 minutes the sensor T1 will measure if thetemperature is now above or below the temperature set. Ifthe temperature is still below the temperature set, the afterheating will keep running. When the temperature at somepoint reaches the value set, the electrical heat level willdisconnect.BypassIf the room temperature increases to 0,5 °C above thetemperature set, the bypass damper function will begin toregulate up to fully open, which has occurred at the roomtemperature to which “max bypass” has been configured,e.g. 5 °C above the configured/desired room temperature.If the bypass function is set to ON, the bypass damper willnormally open, but if the outdoor temperature (T3) is 1 °higher than the extract air temperature (T7), the bypassdamper will close in order to utilise the “free” cooling ofthe supply air that the counter current heat exchanger canprovide.If an extra refrigerant device is fitted to the system, thiswill turn on when the bypass valve is open completely andturn off again when the bypass valve begins to turn offagain. Systems with an electrical preheater will regulate inthe same way as an electrical after heater.Subject to technical modifications of Optima 250 Design15

6. MaintenanceFollow the following instructions to achieve optimalperformance:Before opening the unit,turn off the power/pull out the plug and waituntil the fans have stopped completely.A couple of days after the primary installation check thatthe condensation outlet is working.Environmental requirementsWhen repairing or dismantling the unit, statutory environmentalregulations must be observed regardingrecycling and destruction of various materials.6.1 UnitFiltersWhen the alarm “Change filter” flashes in the control paneldisplay, the filters must be changed. Stop the system bythe circuit breaker of the unit or by the circuit breaker onthe terminal board. Open the front cover/filter drawers andremove the filters. After having changed the filters, resetthe filter timer. The time interval for cleaning/changing thefilters can be adjusted in the operating menu.There is a danger of cuts from sharp discs.The discs must not be damaged.Vacuum cleaning or using pressurised air onthe filters is not recommended.Filter performance may be impaired.G4 = Standard filter (basic filter class G4)F5 = Fein filter (fine filter class F5)F7 = Pollen filter (fine filter class F7)Condensed water and condensation outletThe condensation trays must be cleaned of dirt every autumn.Fill the condensation trays with water and check thatthe water drains away. If not, the outlets must be cleaned.Heat exchangerInspect the heat exchanger every 3 years. If it is dirty,remove it and wash it in warm water with soap and rinsewith a hand shower.FansInspect the fans for dirt in the fan wheels every 3 years.Remove the front cover from the unit. Clean the fans witha brush, a bottle cleaner or a paint brush. Make sure thatthe counterbalancing weights on the fan wheels are notremoved, as this will lead to disequilibrium and cause ahigher level of noise and also wear to the fans.Supply air and extract air valvesClean the valves by drying with a dry cloth.Make sure that the valves do not turn around, causing achange in the air flow.6.2 Alarms (error messages)Filter timerThe control has a filter timer in order to ensure that the filtersare changed and optimal performance is maintained.When the timer reaches the configured value, the alarm“Change filter” will flash in the display until the filters havebeen changed. After having changed the filters, press thekey for the “Filter” symbol until the exclamation mark disappearsand the system returns to normal operation.Data errorThis error message will appear if no communication ispossible between the display and the control. Check thatthe cable connection is correct on terminals 21 to 24.21 Signal22 Signal23 10 Volt24 0 VoltFrost protection errorThis error message will be displayed if a water after heateris fitted to the system and the temperature of the waterafter heater is too low, causing a danger of frost burst.The control will stop the system and open the motoroperatedvalve to keep the heater warm.6.3 Dismantling/taking the system outof serviceThe following must be performedThe power supply, i.e. the electric cables, must be disconnected.Disconnect the condensation outlet and powercables for any after heater/preheater. Disconnect cablesfor the control panel and demount ducts.If the system should to be taken out of service, the ductsmust be demounted to avoid condensed water in thesystem and in the ducts. Close all supply air and extractair valves.16Subject to technical modifications of Optima 250 Design

7. Troubleshooting7.1 Safety thermostat in electricalheater (optional equipment)The safety thermostat protects the electrical heater fromtoo high temperatures during the heat production. Thesafety thermostat is mounted in the electrical box of theelectrical heater. If the set value (90 °C) is exceeded, theelectrical heater disconnects. When the temperature isbelow 90 °C the electrical heater can be reconnected bypressing the reset button at the electrical box.Does not apply to PTC electrical heaters.7.2 The system is not runningThe system has stoppedCheck the following:• Is the system connected to a power supply (230 Volt)?• Is there power in the socket?• Is the unit disconnected via the clock program?• Is the cable attached between the control and thecontrol panel?• Has the filter not been changed (alarm “Changefilter”)?• Frost protection error.Condensed water is leaking from the unitPossible error:• Condensation outlet blocked by dirt.• The condensation outlet is not adequately protectedagainst freezing at low outdoor temperatures.7.3 Error on air sideNo supply air to the living roomsPossible error:• The fresh air filter is blocked by dirt and leaves inautumn or by snow and ice in winter.• Defrosting of the unit.No extract air from the wet roomsPossible error:• The extract filter is blocked.Cold air supplyPossible error:• The heat exchanger is blocked by dirt or ice.• The extract filter is blocked.If the error of your unit is none of the above listed errors,please contact:• Within the guarantee period (0-2 years):The installer from whom you have bought the system.• After the guarantee period (2 years ->):The installer from whom you have bought the systemor the Genvex service department (+45 7353 2765).Before calling, please write down the data from theinscription plate (silver plate on the unit).Subject to technical modifications of Optima 250 Design17

world wide ...DenmarkGenvex A/SDK - 6100 HaderslevTel.: +45 73 53 27 00Fax: +45 73 53 27 07E-Mail: salg@genvex.dkBelgiumArtiklima bvbaB - 9220 HammeTel.: +32 (0) 52 41 25 41Fax: +32 (0) 52 41 29 66E-Mail: info@artiklima.beBillundHamburgCopenhagenIrelandECO Systems Ireland LtdCo. Antrim BT54 6PHTel.: (UK 028) (ROI 048) +44 2076 8708Fax: (UK 028) (ROI 048) +44 2076 9781E-Mail: info@ecosystemsireland.comCroatiaPichler & CO d.o.o.10000 ZagrebTel.: + 385/ (0) 1/ 65 45 407Fax: + 385/ (0) 1/ 65 45 409E-Mail: pichler@zg.hnet.hrSloveniaPichler & CO d.o.o.2000 MariborTel.: +386/ (0) 2/460 13 50Fax: +386/ (0) 2/460 13 55E-Mail: pichler@pichler-co.siGreat BritainTotal Home Environment LtdGB- Moreton in Marsh, GL 56 0JQTel.: +44 (0) 845 260 0123Fax: +44 (0) 1608 652490E-Mail: genvex@totalhome.co.ukIntelligent ventilation systemsfrom Genvex A/SAs ventilation specialists, we offer a product range that coversall aspects of modern ventilation equipment, from passive ventilationunits with highly effective counter current heat exchangersto units with integrated heat pumps that are extremelyenergy-efficient for heating and cooling.AustriaJ.Pichler Lufttechnik GmbHA-9021 KlagenfurtTel.: +43 (0) 463 / 3 27 69Fax: +43 (0) 463 / 3 75 48E-Mail: office@pichlerluft.atPublished by Genvex A/S, Sverigesvej 6, DK-6100 Haderslev