Manual HRUC-E
Contents
1. lt C i 6 2 Air flows The graphs below show the air flow each of the HRUC E units can move plotted against the external resistance HRUC E2 ed doip ainssaid T O lt mm On E gt oO rem lt q HRUC E3 ed doip ainssaid Air flow m3 hour 24 HRUC E4 A toed Q O Sm O U dem gt A N U da A Air flow m3 hour HRUC E5 Ww Um O O O O O O Pressure drop Pa N O O Air flow m3 hour 25 26 ALAA AIP 4 IVISAEER a 6 3 Dimensions Here are the dimensional drawings of the HRUC E2 E3 E4 and E5 for the recommended left installation This way the unit is easier to maintain You have to mirror the image for the right installation Top Bottom 6 4 List of components Here is a list of components of the HRUC E On the next page you can find the article references if you need to order one of the components s ANB Projection of the polluted air outside TVB Supply of fresh air from outside TNW Supply of fresh air to the habitat AVW Extraction from the air out of the habitat Front 590 689 846 Side E 500 1 Heat exchanger 2 Filter exhaust air 3 Filter supply air 4 Supply fan 5 Exhaust fan 6 Temperature sensors a Temp sensor projection outside T4 b Temp sensor supply from outside T3 c Temp sensor extraction habitat T2 d Temp sensor supply to habitat T1 7 Bypass 8 Moun2. 2 7 Liability The HRUC E is designed to operate in a balanced ventilation system The unit has to be placed in a dry frost free area Any other use is unauthorized and is considered as improper use For damage or injury resulting from this improper use of the HRUC E Ventilair Group Nederland can not be held responsible In addition Ventilair Group is not liable for damage or injury resulting from failure to follow safety operating and maintenance instructions as specified in the installation manual 2 8 Deliveries All deliveries are subject to the general conditions of METAALUNIE A free copy will be sent to you when requested lll User s manual This section of the manual provides the information to operate the HRUC E correctly what to do with an error and how to effectuate maintenance T NOTE Always remove the plug from the wall socket before servicing the unit 3 1 Controlling the HRUC E You always have to use a control panel for T the HRUC E Without this the unit can not function The HRUC E can be operated in two ways namely Intelligent 3 position switch with LED indicator This allows you to manually select the ventilation modes and see when maintenance or service of the unit is required Digital deluxe control panel This allows you to automatically or manually set a clock program to select the fan speed You also have a display that shows the status of the unit explained with text Pl
3. Woningen en woongebouwen Rotterdam Stichting ISSO Check the fins of the heat exchanger Clean the heat exchanger Clean the fans Clean the drain Check the speed controller and bypass system Check and if necessary electrical wiring In addition we recommend cleaning the duct system every 6 years repair the Maintenance of the HRUC E by the end user is limited to cleaning and changing filters See Annex for more information Replacing the filters The unit will indicate automatically after twelve weeks that the filters must be replaced However the frequency in which the filters need to be cleaned actually depend on the degree of contamination so please check this yourself regularly After starting the HRUC E check the filters regularly and if necessary replace or clean them It is advised to replace your filters every three months For optimal performance of your unit it is recommended to clean your filters every two weeks If you are living in a home that is just build it is advisable to clean or replace the filters more frequently This is needed because there is a lot of dust in these houses If it appears that the contamination is limited you can increase the interval Replacing cleaning the filters is done as follows Unplug the HRUC E before you start Open the front cover using the two clips at the top Pull the two filters from the unit as shown below 10 Clean the
4. Do not change the settings of the valves These settings have been carefully set by the installer and any change affects the functioning of the ventilation system The cleaning is done as follows Remove the valve from the ceiling or wall Clean the valve in a solution of warm water and soap Rinse the valve and then dry it thoroughly Place the valve back at the same place and at the same position Cleaning changing the filters Note Follow the steps in Section 3 2 or the scheme on the next page carefully when you clean or change The filters If you effectuate the maintenance in another way the warranty will be no longer valid Advice for checking cleaning changing the filters Check the filters before starting up the unit Change the filters every month or two in the first six months After that change them every three months as the filter timer automatically specifies You can keep track of the dates of changing the filters on page 32 Get one filter set for your HRUC E for free It is very important to regularly check your filters for dust accumulation rinse the them or change them To make this process easier for you here is a one time offer for a free G4 filter set The only thing you have to do is send an email to NL ventilairgroup com containing the follow information of your email Free filter set HRUC E The Serial Nr of your unit see sticker on the side of the unit The details of the install
5. If the automatic mode is enabled autom mode you can use this button to manually switch to a higher mode but you can not switch to a lower mode than is set in the clock program If the automatic mode is active and you switch to a higher position the unit will run in a higher mode during five minutes After those five minutes the unit will follow the mode of the clock program again This period can be adjusted by the installer When pressing this button you switch between manual and automatic mode The clock program of the unit only works when the automatic mode is enabled In a menu you can use this button to move to the next selectable field A rE I mM A e k on ia a l If you press this button you enter the main menu In a C LU o submenu you can use this button to return to the previous menu You can use these buttons in the main menu to select the submenus In the submenus you can change the values with these buttons O Q Pressing this key in a sub menu allows you to confirm your selection F Q If no button is pressed for a few seconds you automatically return to the main screen Please find the meaning of the LED lights on the digital operating panel below O If the light is lit under the sun the amp bypass is activated If the light under the ice crystal illuminates the frost protection is active The frost protection is activated when the outdoor temperatur
6. Please note that the next control should be done when the unit is working Stay away from moving parts and watch out for power lines To check whether this is indeed the case you need to warm temperature sensor T3 see section 6 4 for location above freezing point by holding it in your hand If there is no error the supply fan will start again If an error does not match the described characteristics follow the scheme 5 3 1 Flash frequency Error Actiomenduser Change check filter it yourself Section 3 2 Error supply fan Call installer Error extract fan Call installer Call installer Error control board Call installer Error cables control panel Call installer 534 Error data transfer 2x Flash Pause 3x Flash Pause 4x Flash Pause 5x Flash Pause 3x Flash Pause 2x Flash 5 2 Errors deluxe digital operating panel On the Deluxe digital operating errors are noted by a blinking light under The error is shown on the screen with text The following table shows what action you should take to resolve the error This manual is for both users and installers so this table is too The end user can see in the column action the appropriate action to do The installer can see in the column scheme where he can find the correct scheme to resolve the problem These solutions schemes are only intended for installers The message is displayed until the cause has been corrected Error preheater Call ins
7. ends at least 65mm below water level Make sure the water seal within the connection to the sewer is always filled with water to prevent sewer odor in the ventilation system 711 mr 1 12 4 1 3 panel Both control panels can be mounted on a standard mounting box For this seperate the the mounting frame from the operating panel screw the frame into the mounting box attach the cable as shown below and click the operating panel back on the frame Note that the panel must be mounted in an area between 10 C and 30 C with a maximum relative humidity of 80 Installation and connection operating You have to connect the operating panels on the unit by means of a cable 4x0 5mm with flexible conductors Ventilair Group Nederland can supply the right numbered cable article reference 0620166 Connect the numbers of the connection on the unit with the corresponding numbers on the operating panel Ventilair Group Nederland can also supply a protection cap for the cable on the unit article reference 0540131 Make sure the wires are not mixed up or short circuiting this can cause damage Connection on top of the unit Connection on the back of the digital deluxe operating panel Connection on the back side of the intelligent 3 At the 3 position switch connector only number 1 is shown The three connections next to it are 2 3 and 4 To the left of the connector is a jumper which has two possibil
8. Polish CO2 the presence of a CO2 sensor As soon as the CO2 sensor is connected and detected properly a 1 will appear instead of a O rV holiday mode By filling in the value 1 in this field the unit can ventilate at its minimum when you select the holiday speed in submenu 1 Operating mode We strongly advise not to change this value Changing this value to zero means that the unit does not have a holiday speed anymore and will turn off in stead Byp the outside temperature for the bypass This is the minimal outside temperature at which the bypass can open The default value is 17 C Note if you set a too low outside temperature for the bypass you can create condensation problems The bypass operates automatically under the following four conditions 1 It must be summer summer mode active 2 It should be colder outside than inside 3 It is warmer inside than the desired temperature 4 It is warmer outside than the set outside temperature for the bypass 5 3 Fan Config As you enter this menu you will see the percentage of the air flows for both supply and exhaust air for each position The percentage of the holiday mode cannot be changed The default setting is 20 the lowest possible If you do not change these settings the unit provides the quantities that are shown in section 6 2 Below you can find an example of the menu Configuration L 1 L1 sup 30 L1 exh 30 L exh 50 L3 exh 95 L2
9. between the fins If necessary dip it in lukewarm sopwater the heat and rinse them with clean lukewarm water As you do do not use harsh or dissolving cleaning products Then remove the water from the exchanger by lifting it on the smooth exterior and shaking it gently Finally replace the six foam seals article reference 0450153 at the corners of the exchanger and rub them abundantly with vaseline Then place the exchanger back with a metal plate to avoid damage to the seals at the moment you slide the exchanger in the unit see picture 4 3 3 Cleaning the fans Open the front cover Slide the fan towards you Do not remove it otherwise you will disconnect the wiring Clean the fan using a vacuum cleaner with a brush Be careful not to damage or move the weights on the fan blades Then slide the fan back in again 15 4 3 4 Cleaning the drain Remove the duct from the condensate drain and clean it Make sure you put the siphon in place again according to the requirements specified in section 4 1 2 To avoid dehydration you can poor a little bit olive oil into the condensate drain 4 3 5 Check the speed controller and bypass system Please note that this control should be done when the unit is working Stay away from moving parts and watch out for power lines To test the speed controller turn the unit in the three positions and check if the unit accelerates and decelerates properly To verify that the bypass control i
10. filters with a vacuum cleaner if they do not have to be replaced yet Slide the new cleaned filter back in the unit There is no difference between the supply air and exhaust air filter If an arrow is shown on the filter it has to point towards the heat exchanger Close the front cover using the two clips at the top Reconnect the HRUC E Reset the filter timer The filter time can be reset with the 3 position control panel and with the digital deluxe operating panel 3 position control panel Reset the filter time by pressing the two arrows simultaneously for over 10 seconds The red light will go out Luxe digitaal bedientableau Press Go to Filter reset with press Press again and wait for 10 seconds Finally press to return to the home screen without notice As long as the last action has not been completed the red light keeps blinking and 3 3 Recycling of the HRUC E If your HRUC E has come at the end of its lifetime do not dispose it in your household trash Consult with your supplier what he can do with the unit If he can not take the unit back ask your municipality what you can do Your municipality has solutions for the recycling of components or environment friendly processing of the materials The HRUC E is mainly made of metal and is therefore particularly suitable for recycling IV Installers manual This section of the manual provides the information needed to install progr
11. position Outside the preset time intervals the unit will turn in position two 4 As soon as the clock program is set for one day and you press after the last field LS Interval f the following line appears at the top of the screen Copy present day gt next day If you press the program of the present day will be copied to the next day If you want to set another program for the following day press 5 Press to exit the menu and save your Settings Submenu 3 Data Time In this menu you can set the current time and date This is important for proper functioning of the program and switching between summer and winter time Once you have selected the submenu from the main menu press You will see the start screen and the hour of the time display flashes Press to change the value Then go to the minutes by pressing Repeat the previous steps for the day of the week and the date Finish with or cycle trough all fields to save the changes Submenu 4 Filter reset In this menu you can reset the filter timer after service is effectuated You can also reset the timer this way if you change the filters before the filter maintenance message appears Press when you have selected Filter reset in the main menu You will see Filter reset Start enter If you do not not want to reset the filter time press If you press you will see a count down timer from 10 to OO After this the control panel automatical
12. so may cause personal injury or damage to the HRUC E So keep this manual during the lifetime of the heat recovery unit and always unplug it before any maintenance or service is committed to the unit Installing operating and effectuating maintenance of the HRUC E must always be done by a certified installer unless indicated otherwise in this manual During installation the local and general applicable building safety and installation instructions of the municipality utilities and other agencies must be abided There should not be made modifications to the HRUC E unit We recommend you to close a service contract so you are assured of a regular check up Contact your dealer for a list of certified installers any 2 6 Warranty Ventilair Group provides a guarantee of 2 years after installation to a maximum of 30 months after production date of the HRUC E This warranty applies only to material and or construction defects If there is any defect within the warranty period this must be reported to the installer of the unit The warranty on the unit expires if 1 The warranty has expired 2 The installation use and or maintenance does not meet the requirements listed in this guide 3 Major maintenance on the unit was committed by an unauthorized maintenance technician 4 There are signs of abuse or modifications on the device 5 Changes to the system have been made after completion of the installation
13. sup 50 L3 sup 95 The following applies Position Description L1 sup Percentage supply fan position 1 L2 sup Percentage supply fan position 2 L3 sup Percentage supply fan position 3 L1 exh Percentage exhaust fan position 1 L2 exh Percentage exhaust fan position 2 L3 exh Percentage exhaust fan position 3 You can choose the desired field with with and with you can change the percentages Then press to leave the menu and apply the new settings 4 3 Maintenance by installer NOTE Always remove the plug from GN the wall socket before servicing the unit We recommend to commit the following major maintenance of the heat recovery unit every two years Check the fins of the heat exchanger Cleaning heat exchanger block Cleaning fans Cleaning drain Check the speed controller and bypass system Check and if necessary repair the electrical wiring In Annex Il you can keep track of the maintenance that is done The actions needed to service the unit as stated above are explained below 4 3 1 Check the fins of the heat exchanger Open the front cover Then check if the fins are not bent and or the seams are not open 4 3 2 Cleaning the heat exchanger core Open the front cover and remove the exchanger from the unit This can be done using a set of suction cups Then remove the dust between the fins with a vacuum cleaner and brush Wipe gently with a brush
14. Cleaning duct system Oe O AS ee Installation 2year 4year 6year 8year 10year 12year 14year 16year 18year 20year Maintenance task 1 LJ E E a E L g J LJ _ 2 J J E E J J E a d E E 3 J J E LJ J E a g E E 4 g E E E E d J E E _ 5 E a E E L E J d E _ 6 d L E L E E J J E E 7 CJ E E d J J J J E E 8 E E J Changing filters Date Date Date Date Date Date Place your information or stamp here below at each inspection and service Inspection and service after 2 year Working hours unit Date snccsinessnsneeses Installer name Address Phone number Remarks Inspection and service after 4 year Working hours unit Date acesisveiowccwsdes Installer name Address Phone number Remarks Inspection and service after 6 year Working hours unit Datei ciscedaneeviecsmes Installer name Address Phone number Remarks Inspection and service after 8 year Working hours unit Date aminas aaasanas Installer name Address Phone number Remarks Inspection and service after 10 year Working hours unit Date Installer name Address Phone number Remarks Inspection and service after 12 year Working hours unit Date Installer name Address Phone number Rem
15. Comair is a VENTILAIR GROUP Brand VENTILAIR GROUP reserves the right to make changes without further notice to any products herein On our websites www comair nl and www ventilairgroup com you can find the newest version of our manuals VENTILAIR GROUP NETHERLANDS Kerver 16 5521 DB Eersel nl ventilairgroup com 31 0 497 36 00 31 VENTILAIR GROUP BELGIUM Pieter Verhaeghestraat 8 8520 Kuurne be ventilairgroup com 32 0 56 36 21 20 VENTILAIR GROUP FRANCE 8 Rue de Mar chal de Lattre de Tassigny 59000 Lille fr ventilairgroup com 33 0 3 20 12 06 49 VENTILAIR GROUP GERMANY Zimmerbachstrasse 33 74676 Niedernhall de ventilairgroup com 49 0 79 40 9 83 700 Ventilair GROUP A All rights reserved The information and instructions in this manual are subject to print errors and misspelling No rights can be derived from the information contained herein Version 2 0 Ventilair Group Nederland B V Index CROSS anota enganar Su E pg O CU O euaenseceueeaenen 2 ll PME OCCA aaa 4 2 1 Why should you ventilate a cece nsec DOOR NADO OR DSO DECORRER RODE RODES CE ORDENS DECR EAN RCE aC Caran 4 2 2 System D with heat recove ry sccsccsccsccecceccecceccecceccecceccecceccecceccecceccecceccecceccecceccecceccecceccuccecceccecceccecceccesceccess 4 23 Operation of the HRUC E assis sissiinsadasidncad sadias sdasidasaddaidandd casta ani dadd dadas ad andina ida ad dadas ad aids dani did dad dadas d dd 4 2A Benene o
16. E canyon DD RUI DR IN RD E RU 11 4 1 3 Installation and connection operating PANE ccccseseccccessecceceeseccesaeeececsueeececseeeceesueeceesuaecessuaeeseesuaeeees 12 A14 Connecionol the all QUCUS aisaunsantaigacanaa ancorada cal ada ia ga a a TEO TEO 12 4 1 5 Mounting a ground heat exchanger ausnapmasia sora alada Eds Pad da ae 13 4 16 Explanation preheatel saisiaiataso dias inata iga dani adendo ads nanda ii aninhos gd ENA N Ea 13 a 2 Seltines ONNE ARUL E asas dadas elo a id a rer rc cere ia sd 13 4 2 1 General information cccccceecccesecccesecccseecccaececauecscauececsuececeueceesuecscauecetsuecetauecetsuecessuacetsuecetsuecetsuecetsuacensuecs 13 4 2 2 Intelligent 3 position switch with LED iNdiCatOr cccccccssssecccesseccecsesececaueeccesseeeceesueseceeseeecessaaesessuaeeeees 13 4 2 3 Digital deluxe operating panel asia dsiadesiliainaDigadndaDASRCLNADO CU ADDED ERNEE CUSTO TO 13 4 3 Maintenance by installer asiciasaiiiaisisdissiddadlasiugaiddaidindiasiddaici aids cias aids sino sin daiainiidaids sida cido ainiaiiiaiisaiss adia sido siddaddindda 15 4 3 1 Check the fins of the heat exchanger cccccccsssscccceseccccseseceeceusecccsseuecceseeeeeceeseesecessueeeceseuaeeessageeeeesaeeeeees 15 4 3 2 Cleaning the heat exchanger CON ssinca nianincnraigrdndadabatiquincaiovessiasnce ieado veia lead EREEREER ad ires itada adido 15 SS CVC ANI e Walls sas qe dons Sais A PS O Si Di ET 15 434 Cleaning the dia asenpaos
17. U dida ida a do dida dadas do 26 6 5 Wiring diagram HRUC E sesesesseseososesececsosesesecsoseseceososeseceososeseceososeseceosossseceososeseceosesesececsoseseceosesesecsoseseseseosssee 27 Annex MAINTENANCE BY USER uai ai dd E E E E 28 Annex Il OVERVIEW MAINTENANCE sicssisscccsssisascsnnccasesviacescnniasceninscssesmnadsaninnasasteriasesenniaseaniacesenisatsemmessenmadeonineasennennaennenens 30 Glossary To use the HRUC E correctly it is important to know the following definitions first 3 position switch The 3 position switch is one of the control possibilities of the unit It makes it possible to switch easily between the three ventilation modes See section 3 1 1 for a detailed description Ground heat exchanger A ground heat exchanger is an additional option to preheat the supply air in the winter and to cool it in the summer by using the constant temperature of the earth Ducts are placed in the ground in which a fluid is circulating This fluid adapts to the temperature of the ground and is then guided through a heat exchanger in which the supply air is heated or cooled Balanced ventilation There is balanced ventilation when there is as much air extracted from a building as there is supplied Bypass The bypass is used during the summer period to extract the heat of a building in the evening or at night One of the air flows is not guided over the heat exchanger so the extracted heat is not exchanged to the
18. am and maintain the HRUC E unit correctly Information about errors and reports can be found in chapter five Put your contact details on the back of this manual after installation T Always follow the following SS requirements at the installation The installation programming and maintenance of the HRUC E always has to be done by an authorized maintenance technician unless it concerns small maintenance what can be done by the user and is indicated in this manual as such During installation one needs to observe the applicable general and local building safety and installation regulations of the city utilities and other agencies There should be no modifications to the HRUC E 4 1 Installation of the HRUC E There are four types of the HRUC E Unique to these models is that they can be used both left and right It is possible to choose the mounting configuration on site The standard setup is the recommended setup for maintenance If you want to switch the configuration follow these steps Remove the four M8 nut caps together with the four rings Remove the four rubber caps from the threads on the other side Exchange the brackets of the side and place back the rings the cap nuts and the rubber caps Check whether the brackets are attached correctly and whether its positions are correct Remove both covers which are fixed by the clip closures Place both covers back on the unit whilst making sur
19. arks Inspection and service after 14 year Working hours unit Date ensaiado Installer name Address Phone number Remarks Inspection and service after 16 year Working hours unit DATE ssri Installer name Address Phone number Remarks Inspection and service after 18 year Working hours unit Date vrnnsoawsnvaseneve Installer name Address Phone number Remarks Inspection and service after 20 year Working hours unit Date Installer name Address Phone number Remarks 31 Ventilair Group Nederland B V Kerver 16 5521 DB Eersel The Netherlands Tel 31 0 497 360031 Fax 31 0 497 33 08 93 www ventilairgroup com NL ventilairgroup com Your HRUC E installer Name installer Adress Phone number Remarks
20. at exchanger under the name Aquacom Article reference 1230601 The Aquacom is designed to perform optimally in combination with the HRUC E 4 1 6 Explanation preheater A preheater is added to some units for frost protection in addition to the standard frost protection that works with imbalance If one chooses a preheater and a difference between supply and exhaust air of more than 4 C occurs when the outdoor temperature is below 0 C the preheater turns on for 30 minutes After 30 minutes there is a check whether the difference has narrowed If this is not the case the process is restarted The preheater is installed at the factory Installation is not possible after delivery of the HRUC E 4 2 Settings of the HRUC E Once the unit is mounted and the selected operating panel is connected the HRUC E can be started Check again that all air pipes and electrical connections are connected properly Then insert the plug into the socket The unit will start in a few seconds 4 2 1 General information The control of the HRUC E consists of an integrated control board and a operating panel As operating panel you can choose between digital deluxe operating panel or the 3 position switch Any error messages are displayed on the operating panel Both panels are plug amp play after a brief self test they can control the unit 4 2 2 Intelligent 3 position switch with LED indicator The 3 position switch is used to control the ven
21. bottom of the HRUC E If you want to use the connections on the bottom you can remove the spouts on top and the lids on the bottom by turning them counterclockwise Then you exchange the spouts and the lids and fix them on the unit by turning clockwise If you want to use both top and bottom connections for the same air flow you can order extra spouts at Ventilair Group Nederland article reference 1440071 In this case it is necessary to place a control valve to set the air flow rates per floor and room 7 Preferably use pipes that retain their shape to avoid sagging When a pipe sags moisture can build up which can cause damage Moreover the airflow can no longer be guaranteed 4 1 5 Mounting a ground heat exchanger The addition of a ground heat exchanger in your system is optional If you choose to place a ground heat exchanger the preheater is no longer needed The ground heat exchanger is not electrically connected to the HRUC E It is wise to adjust the flow control in terms of percentage after installing a ground heat exchanger This is necessary to overcome the additional resistance of the ground heat exchanger Clarifications on adjusting the flow control can be found in section 4 2 3 When a ground heat exchanger is applied it is not recommended to engage the mode Summer exitair only The ground heat exchanger has the ability to cool the incoming air in the summer Ventilair Group Nederland provides a ground he
22. control board Does it work now Yes Repair the wiring between the cover and the control Replace the control panel and or control board and put the plug back in the socket board and put the plug back in the socket 21 VI Specifications HRUC E 6 1 Technical specifications HRUC E2 HRUC E3 Air flow 300m hour 150Pa 380m hour 150Pa Filter classification G4 optional F5 Dimensions hxwxd 710x842x506mm Weight 55kg Connections 180mm 4x top 2x bottom Heat exchanger Aluminium counterflow 230V AC 10 50Hz 230V AC 10 50Hz FEmetor EB ECmator EN Power input position 1 14W 18W position 2 28W 36W position 3 98W 129W Optional control Bathroom switch 22 HRUC E4 HRUC E5 Air specifications Air flow 5203 hour 150Pa Filter classification G4 optional F5 G4 optional F5 Bypass 100 100 Mechanical specifications Dimensions hxwxd 710x842x506mm 710x842x506mm Weight 55kg 55kg Connections 180mm 4x top 2x bottom 180mm 4x top 2x bottom Heat exchanger Aluminium counterflow Aluminium counterflow Electrical specifications Electrical connection 230V AC 10 50Hz 230V AC 10 50Hz Fans EC motor EBM EC motor EBM Power input position 1 12W 14W position 2 38W 4 W position 3 172W 225W Max current 1 35A 1 6A Cos Phi 0 55 0 55 Fuse 2A slow 2A slow Control 3 position switch and deluxe digital control panel Optional control Bathroom switch 23
23. d the working hours hours per function settings language wanted temp terms of percentage Use and to select a menu After selecting the right menu you can enter the menu with 5 1 Operating hours In this menu you can see how long and in what position the unit has been turning You can also set the duration of position 3 in this menu Note This information is stored in the operating panel not in the unit A new operating panel will display no operating hours In this menu you can find the following details L4 Frost protection B Bypassopen L4 Total running hours In this menu you can select three fields with The possibilities for each field are described below LG If you press when you have selected this field you will reset all counters to zero L3TON This field allows to set the duration of the timer of the unit This setting determines how long the unit remains in the highest position after a signal from an external control such as a bathroom switch par 3 1 3 It also determines the duration of a manual switch to a higher ventilation position when the unit is in the automatic mode You can change the value of this field with and Note unlike the other values in this menu this field is expressed in minutes RHL3VZ This field allows you to set the delay of the unit This setting determines how long it takes for the unit to respond to an external control switch such as the bathro
24. e drops below zero degrees The frost protection ensures that the heat exchanger does not freeze by reducing the supply air flow If your supply fan is not running always check if this light is on If that is the case it does not concern an error If the light below the exclamation mark is green the unit is running If the light is o red then there is an error or filter message See chapter five for more information Below the various menus of the deluxe operating panel will be explained step by step Main menu Press to enter the main menu The main menu provides access to the submenus listed below once Press to exit the submenu and save your settings Submenu 2 Clock program The control panel has a seven day clock program The clock program is set as follows 1 Select the menu clock program in the main Submenu Description menu and press 1 Operating mode Operation of the unit 2 The clock program for Sunday appears an 2 Clock program Set clock program example is shown below You can select the 3 Data time Set date and time 4 Filter reset Resetten filter timer 5 Special function Settings for installer various fields in this menu with Clock progr 5U day Use the buttons and to select a sub menu Then use the button to enter the menu Submenu 1 Operating mode In this menu you can choose the operating mode of the unit You can choose from the four options described below 1 Hol
25. e the lid with the Comair HRUC E sticker is on the visible side 4 1 1 Mounting of the HRUC E Always install the HRUC E on a stone wall in a frost free area preferably heated with a maximum relative humidity of 80 to avoid condensation on and around the unit Place the unit as far away from bedrooms as possible to avoid noise complaints Follow the next steps carefully 1 4 1 2 Fix the bracket horizontal level on the wall with the supplied screws and plugs Make sure there is enough space to place a siphon and possible air silencers and air distribution boxes Also make sure that there is at least 80 cm free space at the front of the unit This space is needed for maintenance Hang the unit on the wall bracket using the mounting brackets that are attached to the unit Thanks to these removable mounting brackets you can choose on the spot if you hang the unit on the right or left side Level the unit using the adjusting bolts at the bottom This ensures a proper disposal of the condensation Drain connection A condensation nozzle is supplied with this unit This shoud be fixed under the unit for the condensation drain Slide the duct over the nozzle and create a siphon so that a siphon with a minimum water seal of 65mm is created like the image below Another possibility is an airtight connection of the duct to a siphon 591 mm 65mm ESSO Make sure that the end of the pipe or duct
26. ease find here below the explanations of the possibilities 3 1 1 Intelligent 3 position switch with LED indicator The intelligent 3 position switch of the HRUC E looks like shown below Explanation of symbols Mode 3 High ventilation mode This mode is recommended if there is a lot of contaminated or humid air For example when you are cooking showering when there are many visitors or a when people are smoking Mode2 Middle ventilation mode This is the recommended mode of the a unit during normal use of the house Mode 1 Lower ventilation mode This mode is recommended at night and ds when nobody is present in the house The light behind the icon indicates which mode is activated With the arrows up and down the mode can be changed manually It is possible to control the speed of the fan modes Contact your installer if you want to change the speed The orange light behind this icon starts p s blinking when you turn even lower than the lower ventilation mode The unit than runs at its minimum This mode can be used if you leave for a long period for example during holidays When the light is continuously lit the unit is completely off If you want ventilation on demand for example using a CO2 sensor you can put the unit in this position The unit will automatically increase the fan setting when the CO concentration increases This requires an additional CO2 sensor If the red light next t
27. er from whom you ve purchased the unit Your name and mailing adress so we can send the filters Error Exchange filter Pull the plug out of the socket Open the front lid of the unit Change the filters note the arrow on the filter has to point towards the bottom Put the front lid back on the unit and put the plug back in the socket o Which control panel do you o Deluxe digital control panel have 3 position switch Press Press both arrows simultaneously during 10 seconds Select the filter reset menu with and press Press again and wait 10 sec Press to return to the main screen without error message 29 30 Annex Il OVERVIEW MAINTENANCE Please fill in here below the maintenance activities effectuated on the unit to keep the overview The first table shows what maintenance should be done en what maintenance is performed in the past In the second table you can indicate when you changed the filters Note If there is major maintenance to be done you have to observe the requirements of section 2 6 3 2 and 4 3 at all times otherwise your warranty will no longer be valid The maintenance actions for the installer consist of the following parts Changing filters Straighten the fins of the heat exchanger Cleaning the heat exchanger block Cleaning the fans Cleaning the condensate drain Checking the speed and bypass control Repairing damage to electrical wiring
28. ical ventilation system is that the energy from the exhaust air is used to heat or cool fresh air This represents substantial energy and cost savings compared to natural ventilation 2 3 Operation of the HRUC E The heat recovery unit HRUC E is a mean for the Ventilair Group to contribute to a better living environment The unit works as follows 1 Polluted air is discharged from wet areas The heat energy is extracted from the air before it is blown outside 2 Fresh outside air is drawn through the unit and through the heat exchanger 3 The extracted energy is transferred to the fresh air in the heat exchanger 4 The fresh air is then distributed to the living places of the home 5 In summer it may be desirable to remove heat from the house The bypass is automatically activated during cool summer evenings and nights The cool air is not heated in the heat exchanger but immediately enters the house 2 4 Benefits of the HRUC E System D is the standard principle of a heat recovery unit However the HRUC E are unique in their kind with their top and bottom connections to the home side And thanks to the removable cover on both left and right side the units can be mounted on both sides This not only results in a simplified system but also in reduction of needed materials and reduced air flow resistance 2 5 Safety Always follow safety and maintenance eo requirements notes and warnings in this manual Failure to do
29. iday speed Use this mode when you are away for a longer period It will only assure minimal ventilation Never enable this mode when somebody is in the house 2 Winter This mode is automatically enabled at the transition to winter time The bypass can not be opened now and the air always goes through the heat exchanger 3 Summer This mode is automatically enabled at the transition to summer time The bypass can now open if the conditions mentioned in section 4 2 3 are met It is therefore important that you indicate the desired temperature in the summer to your installer This desired temperature does not affect the operation of the HRUC E in the winter mode 4 Summer exitair only In this mode only the exhaust fan works so the contaminated air is removed from the home You do not get fresh air in your home through the ventilation system and your supply air is not filtered Use this mode only if you want to ventilate through enough open windows and or doors In this mode there is no heat recovery Press to activate a mode after you have selected it with The selected mode will blink a 00 00 08 30 LS 1 b 08 30 22 00 LS 2 c 22 00 00 00 L amp 1 3 If you have selected the field that you want to adjust use the buttons and to change the value The program offers six time intervals For each time interval you can choose a ventilation mode LS You can choose from the three modes and the holiday 0
30. is you often turn up the heater creating unnecessary energy costs By placing a good ventilation system with heat recovery in your house you will have to heat your home significantly less and you save energy and money Good ventilation is therefore absolutely necessary because our homes are increasingly insulated and made airtight If you do not ventilate adequately in such an airtight house problem with moisture and even mold will occur These problems do not arise from too much insulation but rather from insufficient ventilation A lot of humidity in a house is also created because people breathe and perspire cook wash and shower Besides that CO is liberated when we cook or heat water on gas Poor ventilation is dangerous and unhealthy To counter CO poisoning mold and dust mites and to create a helthy environment you must ventilate adequately 2 2 System D with heat recovery D system with heat recovery HR stands for balanced ventilation through mechanical supply of fresh air and mechanical removal of contaminated air by fans The exhaust air passes through a heat exchanger and there it heats the fresh air The fresh heated air is then blown into the house In the summer it is possible to bypass the heat exchanger at night so that fresh air can be supplied without being heated by the exhaust air bypass If the house is cooler than outside the heat is kept out by the heat exchanger The main advantage of this mechan
31. isspuguads desea sesentansis boda atentando iii dba ai brisa ditas iris ad sadia dada sais ad sda iate 16 4 3 5 Check the speed controller and bypass system cssscccccssseececeesseceeeeseceeceuseecesseaecessuaeecessuaseceesaaaecessaaaeeees 16 4 3 6 Check and if necessary repair the electri cal wiring ccccccessseeecceecceessececeeeeeeeseeeeceeseuenseeceeeesueeeeeeeeeeeees 16 V ERRORS a DR DOOR anew RA ADS ne Ue O SR od a ae 17 5 1 Errors intelligent 3 position switch with LED indicator ccccsccsccsccsccsccecceccecceccecceccecceccecceccecceccecceccecceces 17 5 2 Errors deluxe digital operating panel siiicicscecicicccicscccvedveciveccsicsvecivaccovecwicivacceiceveeivaccotecwisivesceiceveeivaccotecwesivasceivents 17 53 SoOluUHonSEnemes Tor CrRONS reis a a aaa Doado oa sas u oia ada ota asd 18 So CoenealenOl asc sad O a A SiS E Salao dei 18 Broca RIO O is E a 19 So SSIS O assentos e DO ERAS E SD Sb An aa 20 5 3 4 Error cabling data transfer ccccccccccccccccccccccccceeceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeseeeeeeeeeseeeeeesss 21 Vi Bpeciications ARUC E cai ii 22 61 Technical SSC CALIOS aaa sida cd Gnose dida dade dad dade dd dade dd dada 22 BZ jo RR DR er RR RA UNR PORRA IRRRA SRERR PRNED EIRR ORAR POR RD RSRS ERA POR OR SRA 24 DS DIMENSIONS apso retre rere re rrr S RA A EO rrr rere rrr rrr 26 BA Listolcomponents assadas aids sasidas das ddas idas idas asia duas ads ds idad duas a
32. ities holiday speed a and off b We strongly recommend not to change the setting Moving the jumper to position b means the unit has no holiday speed in stead it will be switched off 4 1 4 Connection of the air ducts 1 In a heat recovery system always use silencers and pipes of the right diameter to keep the air resistance and noise as low as possible For advice on the correct pipe diameter please contact Ventilair Group Nederland 2 Install the pipes as shown on the sticker on top of the unit or look in section 6 3 Install the air exhaust pipe draining towards the unit because of possible condensation in the pipe 3 For the connections to the outside always use isolated pipes to avoid condensation in the pipes Place the inlet of fresh air preferably on the shady side of the house this way you avoid extremely hot air supply in the summer Note also that the inlet of fresh air is placed sufficiently far from a flue according to local standards Also consider compound boundary rules And make sure that no rain or animals can enter the pipes 4 Ventilair Group Nederland recommends to use a straight pipe of at least 40 cm on the side of the supply air before using a bend This way the supply fan performs optimally 5 For the home side Ventilair Group Nederland recommends you to apply rigid silencers acoustically insulated flexible ducts are not recommended 6 You can connect pipes both on the top and or
33. lug out of the socket Open the front lid of the unit and the cover of the control board Check the cable of the relevant sensor for an open line error Is the cable broken Place a new sensor or repair the cable and put the plug back in the socket Exchange temporarily the wires of the sensor with those of another sensor on the control board and restart the unit Optionally you can measure the resistance of the sensor It should comply with the following table Does the error indicate another sensor now meme C s di Pull the plug out of Pull the plug out of the socket the socket ER 57 A O as O Replace the control board and Place a new sensor in the right place and put the plug back in the socket put the plug back in the socket 20 5 3 4 Error cabling data transfer Error data transfer Pull the plug out of the socket Check if 1 2 3 and 4 are connected correctly from the unit to the control panel same color of the wires for each number Make sure the cable is well plugged in there is no short circuit and it is not broken on the inside Connect like in section 6 5 and put the plug back in the socket It is also possible to connect a short cable to exclude errors in the cable Problems with cable Replace the cable Open the cover of the and put the plug control board and put the back in the socket cable of the control panel directly in the
34. ly switches back to the main menu the light stays on Finish the action by leaving the main menu by pressing Your filter timer is reset 12 weeks later the filter maintenance message will be shown automatically on the control panel again Submenu 5 Special function In this menu it is possible to personalize settings of the unit This can only be done by a qualified installer Read section 4 2 3 if you want to know what your installer can personalize for you 3 1 3 Extra control option bathroom switch The two control panels can be extended with a bathroom switch A bathroom switch can be added to turn the HRUC E temporarily in the highest position to extract moist air quicker When this switch is activated the light behind ventilation mode 3 on the intelligent 3 position switch will blink At the deluxe digital operating panel you will see the text Ventilation Step III ext on the screen This mode can not be cancelled the duration is determined by the timer see par 4 2 3 3 2 Maintenance by user Major maintenance of HRUC E should always be performed by a qualified installer We recommend as shown on page 133 of ISSO Kleintje Ventilation to commit every two years the following the major maintenance on your heat recovery unit 1 Hofman Ing M C amp Roijen Ing E J A amp Vos F A amp Weelde Ir A M Van amp Zieremans H amp Wagenaar Ir E J 2009 Kleintje Ventilatie
35. o the exclamation N mark is lit continuously the filters should be replaced See the schedule in Section 3 2 If the light is blinking an error has occurred For more information about the error see chapter 5 3 1 2 Luxury digital operating panel The Deluxe digital control panel gives you more options to operate the HRUC E than the 3 position switch This makes it easier to set the unit to your personal requirements When you start the unit it is not obligated to change the settings if you do not have the need There is a default clock program installed after fabrication This clock program turns the unit in mode 1 between 23 00 and 08 30 on weekends and in mode 2 between 8 30 and 23 00 On weekdays it turns the unit in mode 1 between 22 00 and 7 30 and the remaining time in mode 2 How to change the clock program is explained later in this section To find out exactly what your installer can personalize for you thanks to this digital operating panel read section 4 2 3 7 a The screen The deluxe digital operating panel of the HRUC E looks as shown above The screen contains the following information Time 16 12 Mo 23 07 10 Date Current fan setting Fan step Manual auto control Manual mode Season bypass Summer 23 5 C Room temperature at control panel The basic buttons There are 6 buttons and 3 LEDs on the conrol panel i N A This button allows you to ae manually select the fan ad speed
36. om This field is set with and with Note unlike the other values in this menu this field in minutes 5 2 System settings This is the menu where the system parameters can be set which make the unit work properly These settings are only for the installer to avoid settings that can lead to damage As you enter this menu you will see the following screen Wantedtemp 22 C Resetoo adjust 0 0 english Byp 17 C Max ADR 01 CO2 rH 1 In this menu you can swith between the adaptable fields with All fields are explained here below The values in the fields can be changed with and Wanted temp In this field you can enter the wanted temperature This temperature has only effect on the operation of the bypass So you have to set the desired indoor temperature in the summer Reset This field allows you to reset the operating panel to factory settings To reset the panel you have to enter the value 55 in this field Then go through the menu until the wanted temp is blinking Then press and hold To reset press too and release this button to complete the process Adjust correction of the temperature of the room To ensure that the operating panel displays the same temperature as a thermostat in the same room it is possible to correct this value here English setting of the language In this field you can select the language of the operating panel There are five options German English French Dutch and
37. rtie HU Cee cicero ssarceresarcctessareciseeirestcizanissetasniciapannisiceniciasetassscuctoiedcactsaaecensedotessadcccissanrestsiaaniscsscenicietecs 4 25 SEW re RS RR DRE DEAR RR REDE ERA 4 PA O UN ANNE rics RR E RR IR RR eo RR E RS RD PR RR RR EEE E RR ERR ERRO RR RP ER RE RR 5 rA ADIA aos treonina ad ad nd dao nd a a 5 2 8 IDelIVeRES sisanne nd ad dada dad aca dada dad ain A dada dub nd ac adnda dad adnda AA 5 WI US is a S SS SS 6 31 Controlling the HRUC E sirana 6 3 1 1 Intelligent 3 position switch with LED iNdicator ccccccccssssccccceseececeeeccecceeeccecsueeeceesuaeecessauecessuaeceesaageeees 6 34 2 LUXURY digital operating pahe oxcsxcsncceensreesawterasecensaawntondeatandwesceanotsessasetaecenboudeeias dus ditados gra teda ii ati EES TENE EEUE 7 3 1 3 Extra control option bathroom SWIUCM sa vedanscivesscaciwenecssrwecvinciwadsdsaawecstatboacessawecbustawassusaaseasundbonseusenensvindawnaeies 9 3 2 Maintenance DY USER asia da ads ds dd cn dd Id dd didi aii dn dadas dd 9 3 3 Recycling OF the ARUC E usaasisasasistsadidisdsadi ainsi died adi ssa dadas adiada ad a dd 10 IV WM SUA ETS manta E A T E A T A P E EE casando NA E do casando E ascendia casa nd E aisas do sassaisidda 11 ACL UMS CAN ALION OF CME FARR CHE aros aradaaa sand PAC RE ACSALCRSO CANO AS ADO RADEON DADA ADO AAA G RA CAN RADAR AND GA O RARAS CANSAR 11 41 1 Mounting ofthe NRUC Es anais da ap O DD io A di AD ASA Gi 11 a e E Ds a Oni ai N SER PR NERD PICA ERRA REINO
38. s working you must open the front cover and then warm the sensor T2 extraction from habitat by holding it in your hand The temperature T3 supply from outside must be at least 17 C factory setting and not higher than T2 The bypass will respond after one minute 4 3 6 Check and if necessary repair the electri cal wiring Check the wiring and make sure that no wire is touching a fan If a cable is damaged please contact Ventilair Group Nederland to find a solution V Errors 5 1 Errors intelligent 3 position switch with LED indicator On the 3 position switch errors are indicated by a flashing light behind A Which error has occurred depends on the flash Here below you can see what action you should take to resolve the error This manual is for both users and installers so this table is too The end user can see in the column action the appropriate action to do The installer can see in the column scheme where he can find the correct scheme to resolve the problem These solutions schemes are only intended for installers The message is displayed until the cause has been corrected Description Signal Constant burning Constant flashing Some remarks only intended for the installer do not effectuate these if you are the end user If only the supply fan stopped but the operating panel does not display an error it is possible that it is the frost protection This does not appear in the 3 position switch
39. supply air flow Filter For an optimum quality of indoor air the outside air is guided through filters before it enters the building In addition the extracted air is also filtered before it enters the heat exchanger This keeps the channels of the heat exchanger cleaner and therefore more efficient Living spaces Rooms in the house where people are present during a long time are seen as living spaces Think of the living room bedroom and study room Deluxe digital operating panel The digital deluxe operating panel is a more sophisticated possibility to control the HRUC E It includes a digital display and has several additional settings compared to the 3 position switch including a clock program that switches the unit in the mode you want at preset times so you can adjust the ventilation automatically to your needs In section 3 1 2 you will find more information about this operating panel Wet areas Areas where a lot of humidity or smell can occur are known as wet areas Think of the kitchen bathroom and toilet System D System D stands for balanced ventilation system with mechanical supply of fresh air and mechanical extraction of contaminated air by fans The amount of supplied and extracted air is adjusted by the valves That is why it is important to keep the same settings of the valves and to keep the valves at the same setting It is also important that air can circulate well in the house so make sure tha
40. t openings under doors are not sealed or reduced Counter flow heat exchanger The heat exchanger is the part of the HRUC E where the heat is exchanged between the supply and extracted air It consists of aluminum plates that are executed alternately flat and corrugated Along these plates supply and extracted air flows without directly coming into contact with each other It is known as counter flow because the supply and extracted air flow in opposite directions for optimal heat exchange Holiday mode The lowest ventilation mode of the unit This mode is intended for times that the dwelling is not used for a long period Activating this mode while the property is still used on a daily bases can lead to health problems and fungal growth Ventilation mode 1 This low mode is recommended for overnight and short absences The air flows of this mode at factory settings are shown in section 6 2 Ventilation mode 2 This is the recommended mode during normal use of the dwelling The air flows at factory settings of this mode are shown in section 6 2 Ventilation mode 3 The highest mode of the unit This mode is recommended for intensive use of the house think of cooking showering many visitors or people smoking The air flows at factory settings of this mode are shown in section 6 2 Preheater Optionally a preheater can be applied to the HRUC E This ensures that the heat exchanger of the HRUC E is protected from frost e
41. taller Po Some remarks only intended for the installer do not effectuate these if you are the end user If an error does not match the described characte ristics follow the scheme 5 3 1 Above each error message you will see CPU adres adr1 Deze regel geeft aan welk apparaat een storing heeft gemeld Dit wijkt enkel af als u meerdere toestellen heeft aangesloten op n bediening This line indicates which unit has reported an error This differs only on when you have multiple units connected to one control panel Description error on screen Storingsnr Handeling Frost protection none nose s12 Exchange filter boit yourself Secions2 1 Extract fan stopped Call installer eal installer Short circuit T1 2 3 4 sensor pe Call installer Open line T1 2 3 4 sensor Error data transfer Call installer 17 5 3 Solution schemes for errors 5 3 1 General error The unit no longer functions properly or the error is not listed in the table Reset the unit by pulling out the plug during 10 seconds and then place it back again Wait 15 minutes Does the unit work Open the cover of the control board on top of the unit The error is temporarily fixed keep an eye out for new errors Is there 230V on the power entry of the control board N amp L1 Replace the control Pull the plug out of panel or control board the socket Replace the fuse at the con
42. tilation system It has the following features 1 Manual activation of the modes 1 to 3 2 Reset of the filter time see Section 3 2 If it is necessary to adapt the air volume per position during the setting of the system or if the bypass temperature has to be changed you can temporary use a digital deluxe operating panel If this is not necessary the 3 position switch can be connected immediately and the unit can be used 4 2 3 Digital deluxe operating panel The Deluxe digital operating panel provides in addition to the features of the 3 position switch the following 3 Clock program with six switching points per day for each day of the week 4 Intelligent control bypass 5 Temperature display in the room where the operating panel is mounted 6 Adjustment of the ventilation modes In the next section of the manual there is a clarification of the submenu five Special function from the main menu For the first four submenus see Section 3 1 2 Select the submenu from the main menu with and press The fifth submenu is only visible when you pass submenu 4 Filter reset 13 14 Submenu 5 Special function This menu is only intended for qualified installers This menu requires a code Contact your dealer to obtain this code Use to change a number Use to skip to the next number In the menu Special function you have the following choices Submenu Description 5 1 Operating Here you can fin
43. ting bracket 9 Electrical connections 10 Condensate drain 617mm 11 Extra spigot for bottom connection Number Component Article reference 1 Heat exchanger 0820030 2 3 Filter set G4 0130003 2 3 Filter set F5 pollen filter 0130004 4 5 Fan with housing On demand 6 Temperature sensor 1146050 7 Bypass motor with cable 0320092 9 Controller HRUC E On demand 10 Tailpiece for condensate drain 1230684 11 Extra spigot for bottom connection 1440071 Deluxe digital control panel 2070025 3 position switch with LED 2070026 6 5 Wiring diagram HRUC E Blue Power 100 240 VAC 12V DC Green Yellow Brown Black Red er Ee Re lay Preheater Bathroom switch Inside supply air D Temperature sensor TA Color Blue P Green Yellow Yellow 0 10V Outdoor air B Temperature sensor Yellow 0 10 V Extract air A Temperature sensor 2 28 Annex MAINTENANCE BY USER This annex provides you as a user information about the maintenance of your unit To make it complete you can also find the cleaning instruction for the valves Although this is not part of the HRUC E a clean valve provides an optimum air flow After the instruction you can find the maintenance instructions for the filters of your HRUC E Cleaning the valves The supply and exhaust valves in your home should be cleaned at least twice a year Note
44. trol board Put the plug back in the socket If the fuse breaks again pull the plug out of the socket and check all internal wiring Replace the damaged wiring Put the plug back in the socket 18 5 3 2 Fan error Extract or supply fan stopped Pull the plug out of the socket Open the front lid of the unit Put the plug back in the socket Are both fans turning Open the cover of the control board Measure within 1 minute after putting the plug back in if there is a voltage of 230V on the poles K1 see scheme section 6 3 Is the voltage correct Measure within 1 minute after putting the plug back in if there is a voltage between O and no 10 volts on the poles O and U1 or U2 as shown in section 6 5 Is the voltage correct Pull the plug out of the socket replace the Pull the o of Pull the plug out of cables of the fans and put the plug back in the socket the socket the socket If this does not work or when this is not possible replace the Replace the Replace the control board and control board and put the plug back put the plug back in the socket in the socket complete fan set and put the plug back in the socket 19 5 3 3 Sensor error Open line or short circuit on sensor T1 T2 T3 T4 To determine which sensor is creating an error you can connect a digital control panel deluxe temporarily to units with a 3 position switch Pull the p
45. ven in extreme winter conditions The outside air is preheated electrically before it enters the heat exchanger Moisture protection The unit can be controlled in any mode by a CO gt sensor or a bathroom switch This control is also known as a moisture protection Frost protection To prevent the heat exchanger from freezing at temperatures below O C there is a frost protection This protection will initially create an imbalance in the ventilation flows to keep the heat exchanger free from frost If this does not help the supply fan will be turned off briefly Heat recovery HR The heat exchanger will extract the heat of the exhaust air This heat is then transferred to the supply air In this way heat is recovered that normally should be blown out of the house 4 Il Introduction Read this manual carefully before installing and or using the unit This guide gives you step by step guidelines for proper and safe installation operation and maintenance of the HRUC E Installation must be performed by a qualified installer Incorrect or incomplete installation may cause the system not working properly which may affect air quality in the home The installation must be connected according to local installation instructions 2 1 Why should you ventilate Older homes are often poorly insulated and have many cracks and crevices This causes uncontrolled ventilation which has cold draft as consequence To combat th
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