USER`S MANUAL Heat recovery air handling unit
Contents
1. 3 Insert the junction box in the wall The cable from the delivery set may be replaced with a cable of required length type 3x0 5 mm2 max cable length 10 m 4 Connect the cable to the speed controller following the wiring diagram at page 16 Install the speed controller inside the junction box using screws 5 Mounting the speed controller front part 1 Insert the speed controller front panel 2 Fix the front panel with a washer and a nut 3 Install the control knob 4 The speed controller mounting is completed VENTS VUT H EC COMFO CONTROL PANEL MOUNTING 1 Use a screwdriver to undo the clips in the lower part of the control panel through the access holes 2 Remove the back cover 3 Disconnect the cable from the terminal block 4 Lay the cable in the wall to the panel installation site 5 Attach the panel back cover to the wall 6 Connect the cable to the terminal block 7 Clip the panel front part in place OOOO ELECTRICAL CONNECTIONS DISCONNECT THE UNIT FROM THE POWER SUPPLY PRIOR TO ANY WORK ON THE UNIT CONNECT THE UNIT TO A PROPERLY INSTALLED AND GROUNDED SOCKET ANY TAMPERING WITH THE INTERNAL CONNECTIONS IS PROHIBITED AND WILL VOID THE WARRANTY The unit is rated for connection to single phase ac 230 V 50 Hz power mains Connect the unit to power mains through the external automatic circuit breaker installed at the power input and in2. 5 Month 6 Year Set the required parameter value on the control panel using the and buttons To exit the date and time setup mode press the button 8 Scheduled Operation Mode To activate the scheduled operation mode press and hold the button and then press the button on the control panel The scheduled operation mode is confirmed by the indicator glowing on the display screen To deactivate the scheduled operation mode press and hold the button and then press the button on the control panel The scheduled operation mode can be activated or deactivated using the O button on the remote control The timer settings will always prevail over the scheduled operation parameters 9 Scheduled Operation Setup There are four entries available for each day which may contain the time for unit changeover to a specific fan speed as well as unit turning ON OFF To access the scheduled operation settings switch off the a unit using the button on the control panel or the button on the remote control Press and hold the button then press the button on the control panel Fan speed O VENTI To select the scheduled operation setup mode parameters press and hold the button and use the and buttons to select the required 3 Use the and buttons to set the parameter values Scheduled operation setup mode parameters Entry number there are four entries for each day
3. Week day day setting Fan speed fan speed setting for the current entry Time time setting for the current entry To copy the entries to the following day press and hold the button then press Please note that copying entries from Sunday onto Monday is not possible m To exit the scheduled operation setup mode press the button on the control panel or the button on the remote control A sample schedule programming sequence is given in the table below SAMPLE PROGRAMMING SEQUENCE In case of an emergency the unit switches off while the alarms are displayed on the control panel display The list of possible alarms is given in table below ALARM INDICATION We 19 05 INDICATOR FAULT HANDLING Contact the maintenance service MAINTENANCE DISCONNECT THE UNIT FROM POWER SUPPLY PRIOR TO ANY MAINTENANCE OPERARIONS The unit must undergo technical maintenance 3 to 4 times a year Maintenance includes general cleaning of the unit and the following operations 1 Filter maintenance Contaminated filters increase air resistance thus impairing supply air delivery into the premises The filters should be cleaned as they get dirty but at least 3 4 times a year Use a vacuum cleaner to remove the contamination or use a new filter New filters can be purchased from your Seller FILTER REMOVAL 1 Remove the six triangular screws 2 Take off the side panel 3 Pull the filters to rem
4. in this manual UNIT OVERALL DIMENSIONS MM 455 570 840 130 165 215 140 230 390 525 540 660 105 135 160 220 223 295 945 925 1010 830 830 890 TECHNICAL DATA 1 230 140 210 334 1 2 1 6 272 300 400 810 2300 2600 2860 24 45 30 45 25 up to 60 Aluzinc 25 mm min wool G4 G4 F7 36 67 83 86 up to 98 81 up to 98 Counter flow Polystyrene option DESIGN AND OPERATING LOGIC The unit has the following operating logic Warm stale extract air from the room flows to the unit where it is filtered then air flows through the heat exchanger and is exhausted outside by the extract fan through the exhaust air duct Clean cold air from outside is moved by the supply fan to the supply filter Then filtered air flows through the heat exchanger and is moved by the supply filter to the room Heat energy of warm extract air is transferred to clean intake fresh air from outside and warms it up Heat recovery technology minimizes heat energy losses energy demand and operating costs for air heating The heat exchanger freeze protection function for the VUT H EC unit is implemented with a freeze protection thermostat and for the unit VUT H EC Comfo is implemented with a temperature sensor installed in the exhaust air duct In case of a freezing danger the supply fan is turned off and the heat exchanger is warmed up with warm extract air flow To set the thermostat temperature set point set t
5. the requirements according to the EU norms and directives to the relevant EU Low Voltage Equipment Directives EU Directives on Electromagnetic Compatibility We hereby declare that the following product complies with the essential protection requirements of Electromagnetic Council Directive 2004 108 EC 89 336 EEC and Low Voltage Directive 2006 95 EC 73 23 EEC and CE marking Directive 93 68 EEC on the approximation of the laws of the Member States relating to electromagnetic compatibility This certificate is issued following test carried out on samples of the product referred to above Assessment of compliance of the product with the requirements relating to electromagnetic compatibility was based on the above standards Quality Inspector s Stamp SELLER S INFORMATION Shop name Address Sales date This is to certify delivery of the complete unit with the user s manual The warranty terms are Sr aw acknowledged and accepted Sellars seal Customer s signature MOUNTING CERTIFICATE Heat recovery air handling unit O VUT H EC O VUT H EC Comfo has been connected to power mains pursuant to the requirements stated in the present user s manual omayan C WO Installation technician s full name R company seal Installation date This is to certify that the works specific to the unit installation have been performed in accordance with all the applicable provisions of local and national construction electri
6. trap not included in delivery package and sewage collection system with metal plastic or rubber connecting pipes The pipe slope downwards must be at least 3 Fill up the system with water before connecting the unit to the power mains The U trap must be filled with water at all times during the unit operation Make sure that the water flows freely into the sewage collection system or otherwise condensed water may build up in the unit during the heat exchanger operation which may damage the equipment and result in water outflow to the premise The condensate drainage system is designed for normal operation in premises with air temperatures above 0 C If the expected air temperatures are below 0 C the condensate drainage system must be equipped with heat insulation and pre heating facilities Drain spigot Drain pipe w U trap Drain pipe u Sewage system A B 60 mm VUT H EC SPEED CONTROLLER MOUNTING 1 Disconnect the front panel from the speed controller 1 Remove the control knob 2 Remove the retaining nut that fixes the front panel 3 Remove the speed controller front panel 2 Loosen the two screws to disconnect the junction box from the speed controller Disconnect the control cable from the speed controller Remember the colour marking of the wires and the terminals to enable their correct connection after completing of the speed controller mounting Screws 2 VENTS
7. USER S MANUAL VUT 300 HEC VUT 400 H EC VUT 800 H EC VUT 300 H EC Comfo VUT 400 H EC Comfo VUT 800 H EC Comfo Heat recovery air handling unit O VENTI gt VENWNTS CONTENTS Safety requirements Introduction Use Delivery set Designation key Technical data Design and operating logic Mounting and set up Condensate drain VUT H EC speed controller mounting VUT H EC Comfo control panel mounting Electrical connections Unit control Maintenance Troubleshooting Storage and transportation rules Manufacturer s warranty Acceptance certificate Seller s information Mounting certificate Warranty Card JO U U U U w 14 16 16 18 23 24 25 25 26 26 26 27 SAFETY REQUIREMENTS Read the users manual carefully prior to the operation and installation of the heat recovery air handling unit hereinafter the unit Fulfil the users manual requirements as well as provisions of all the applicable local and national construction electrical and technical codes and standards e The warnings contained in the users manual must be considered most seriously since they contain vital personal safety information Failure to follow the safety regulations may result in an injury or unit damage Read the manual carefully and keep it as long as you use the unit While transferring the unit control the users manual must be turned over to the receiving operator A Symbol le
8. cal and technical codes and standards The unit operates normally as intended by the manufacturer WARRANTY CARD Product type Heat recovery air handling unit ee O VUT H EC O VUT H EC Comfo TY i 204 DI WENTZ
9. d setup mode and save the changes press and hold the button The remote control cannot be used to adjust the fan speed To revert to the factory settings enter the fan speed setup mode press the and buttons simultaneously and hold them for 3 seconds Factory Fan Speed Settings Low speed 1 40 Middle speed 70 High speed 100 6 Filter Replacement Indication When the filters have reached the end of their service life of 3000 hours the operating temperature indicator normally displayed on the control panel is replaced with the F indicator prompting filter replacement or cleaning In case of filter replacement indicator F switch off the unit by pressing the button and disconnect it from power supply Replace the filters according to the sequence given in the Technical Maintenance section page 21 Connect the unit to the power mains and switch it on by pressing the button on the control panel or the O button on the remote control TIMER OFF Then press the S7 and buttons synchronously to reset the motor meter 7 Date and Time Setup Switch the unit off To enter the date and time setup mode press and hold the button then press the O button on the control panel While holding the W button select the parameter for adjustment by using the and buttons The parameter being adjusted is blinking The date and time parameters are ordered as follows 1 Minutes 2 Hours 3 Day 4 Date
10. der 3 Take on the spade terminals to connect the limit switch to the wires 6 Mounting the panel on the selected service side 1 Connect the ground cable to the service panel on the other side of the unit 2 Install the panel and fix it with the six triangular screws 7 Installing the back panel Install the panel and fix it with six screws amp VENTS The unit design enables suspended mounting wall mounting and mounting on the floor The unit is suspended to the ceiling using belts not included into the delivery set For wall mounting use a special mounting bracket and for mounting on the floor use special levelling supports The mounting instructions are give below Note wall mounting is not applicable for the VUT 800 H EC and VUT 800 H EC Comfo units SUSPENDED MOUNTING 1 Attach the wall mounting bracket to the wall considering the wall material and the unit weight UNIT MOUNTING ON THE FLOOR 1 Mounting of the unit on the floor is as follows SUSPENDED MOUNTING The unit is suspended with the belts that must be selected to match the unit weight The belt must have an opening or a clamp to fix the triangular screws to the unit The suspended mounting examples are shown below Rigidly fixed crossbeam amp VENTS CONDENSATE DRAINAGE The condensate drain pan has a pipe to evacuate the condensed fluid outside the unit Connect the pipe U
11. e distances The instruction on service side change is shown below Left modification EXTRACT AIR INTAKE AIR Service side SUPPLY AIR EXHAUST AIR INTAKE AIR EXTRACT AIR Service side EXHAUST AIR SUPPLY AIR III IIIIITIT SERVICE SIDE CHANGE 1 Dismantling the mounting bracket on the current service side 1 Loosen the two triangular retaining the bracket 2 Pull the bracket downwards to withdraw it from the slots 3 Remove the bracket and tighten the triangular screws 2 Dismantling the panel on the current service side 1 Remove 6 screws 2 Open the back panel and disconnect the ground cable Remove the back panel DVENTS 3 Removing the service panel on the current service side 1 Remove the 6 triangular screws 2 Open the panel and disconnect the ground cable Remove the panel 4 Removing the limit switch on the current service side 1 Remove the spade terminals to detach the limit switch from the wires 2 Press the fixing lugs to remove the limit switch from the mounting bracket 3 Remove the two screws that retain the limit switch holder 4 Remove the holder from the unit aD fs 5 Mounting the limit switch on the selected service side 1 Fix the limit switch holder on other side ofthe unit with two screws 2 Fix the limit switch in the hol
12. e the connection relies on a normally closed dry contact which opens the unit control circuit on fire triggered actuation from the central fire alarm system board H contact for humidity sensor or CO2 sensor connection Connect the humidity or CO2 sensor to the terminals 3 and 4 The connection relies on a normally closed dry contact Once closed the unit switches to maximum speed Y N Y L Y C contacts for connection of 3 point control air damper Connect the air damper actuator to the terminals 5 6 and 7 The same contacts can be used for parallel connection of one more damper Any extra contacts are connected according to the wiring connection diagram VUT H EC COMFO EXTERNAL WIRING DIAGRAM Y 230V 50 60 fi PK H to the external H to the fire alarm to the humidity air damper LI N PE system board or CO2 sensor i Damper i H I I OF Removethe _ X Z TU N en jumper prior i gal I nag oj W fetes IL A to connecting I I l l I ein fret VUT H EC COMFO CONTROL PANEL WIRING DIAGRAM Controller circuit board Connecting cable 4x0 25 mm Control panel circuit Contact number Wire colour board 1 white 2 brown 3 green 4 yellow VENTS UNIT CONTROL VUT H EC CONTROL Air flow is controlled with the P 1 010 speed controller Set the control knob to a respective speed position to activate the required unit
13. en the air temperature rises above the 3 C the unit reverts to set operation mode DVENTS 5 Unit Parameter Setup CHANGING THE UNIT SETTINGS WILL DISCARD THE FACTORY SETTINGS FAN SPEED CAN ONLY BE ADJUSTED FROM THE CONTROL PANEL Fan Speed Setup Mode At the setup stage each of the low medium and high speed settings can be attributed a specific supply and extract fan performance To enter the fan speed setup mode switch off the unit then press and hold the button on the control panel and hold button for 3 seconds Upon entering the setup mode the panel display screen will show the SET and h indicators Set the fan speed as necessary using the and buttons While the speed stage is being set the display shows the currently selected speed 9 amp or To change the supply fan power press and hold the W button then press the button to increase the speed or press the button to decrease it Each pressing of the and buttons increases or reduces the supply fan power in 1 increments Press the button to display the current supply fan speed in of the maximum air capacity To change the exhaust fan power press the button and while holding it use the button to increase the power or the button to decrease the power Each press of the and buttons increases or reduces the exhaust fan power in 1 increments Press the button to display the current extract fan speed To exit the fan spee
14. er is entitled to elimination of faults by means of warranty repair performed by the manufacturer The warranty repair includes works specific to elimination of faults in the unit operation to ensure its intended use by the user within the warranty period The faults are eliminated by means of replacement or repair of the complete unit or the faulty part thereof The warranty repair does not include Routine maintenance Unit installation dismantling Unit setup To benefit from warranty repair the user must provide the unit the users manual with stamped sale date and the payment document certifying the purchase The unit model must comply with the one stated in the users manual Contact your Seller for warranty service The manufacturer s warranty does not apply to the following cases e User s failure to provide the unit with the entire delivery package as stated in the user s manual or with missing component parts previously dismounted by the user Mismatch of the unit model and make with the respective details stated on the unit packing and in the user s manual User s failure to ensure timely technical maintenance of the unit External damage to the casing excluding external modifications of the unit as required for its installation and the internal components of the unit Alteration of the unit design or engineering changes of the unit Replacement and use of the unit assemblies parts and components not appro
15. gend used in the manual DO NOT UNIT MOUNTING SAFETY PRECAUTIONS The unit must be disconnected from the power supply prior to every installation or repair The unit must be grounded operation The unit must not be operated outside the Do not use damaged equipment or temperature range stated in the user s manual conductors to connect the unit to power or in aggressive or explosive environments mains While installing the unit follow the safety regulations specific to the use of electric tools Unpack the unit with care Do not change the power cord length at your Do not position any heating devices or other own discretion Do not bend the power cord S equipment in close proximity to the unit Avoid damaging the power cord power cord DWVENTS Do not touch the unit speed controller or the control panel with wet hands Do not carry out the unit maintenance with wet hands Use the unit only as intended by the manufacturer Do not connect a clothes dryer or other similar equipment to the ventilation system Do not sit on the unit and do not put any objects on it Do not let children operate the unit Keep combustible gases and inflammable products away of the unit In case of unusual sounds smoke disconnect the unit from power supply and contact the service centre Do not block the air duct when the unit is on Do not wash the unit with water Protect the unit electric parts from water ingress Do not p
16. he temperature control knob into a respective position The recommended thermostat set point is 3 C factory setting VUT 300 H EC SERVICE SIDE VIEW EXTRACT AIR INTAKE AIR SUPPLY AIR EXHAUST AIR Condensate drain pipe Thermostat Supply filter Extract fan a Heat exchanger a Drain pan a Supply fan a Extract filter a Limit switch a Terminal box VUT 400 H EC SERVICE SIDE VIEW VUT 800 H EC SERVICE SIDE VIEW Thermostat s amp VENTS VUT 300 H EC COMFO SERVICE SIDE VIEW INTAKE AIR gt EXTRACT AIR EXHAUST AIR SUPPLY AIR Condensate drain pipe Supply filter Extract fan Heat exchanger a Drain pan Supply fan a Extract filter a Limit switch a Control unit VUT 400 H EC COMFO SERVICE SIDE VIEW VUT 800 H EC COMFO SERVICE SIDE VIEW IL I El a EE MOUNTING AND SET UP MINIMUM SERVICE ACCESS TO THE UNIT While mounting the unit provide the minimum service access for service and repair The minimum service distances from the unit to the walls are shown in the figure below VUT H EC VUT H EC Comfo Service side Service side UNIT MODIFICATIONS The unit service side may be changed for mounting convenience and for keeping minimum mounting and servic
17. minent Impeller soiling Clean the impeller s Loose screw connection in the fans or in the Tighten the fan or casing screw connectioni against casing stop No anti vibration dampers Install anti vibration rubber mounts Clean the drain line Check the drain line slant inspect the U trap and make sure the drain line is equipped with frost protection Clogging damage or wrong mounting of the drain pipe amp WENT S STORAGE AND TRANSPORTATION RULES Store the unit in the manufacturer s original packing box in a dry ventilated premise at the temperatures from 5 C up to 40 C Storage environment must not contain aggressive vapours and chemical mixtures provoking corrosion insulation and sealing deformation Use hoist machinery for handling and storage operations to prevent the unit damage Fulfil the handling requirements applicable for the applicable freight type Transportation with any vehicle type is allowed provided that the unit is protected against mechanical and weather damage Avoid any mechanical shocks and strokes during handling operations MANUFACTURER S WARRANTY The manufacturer hereby warrants normal operation of the unit over the period of 24 months from the retail sale date provided the user s observance of the transportation storage installation and operation regulations Should any malfunctions occur during the unit operation through the manufacturer s fault during the warranty period the us
18. other harmful substances THE UNIT IS NOT INTENDED TO BE USED BY CHILDREN PHYSICALLY OR MENTALLY DISABLED PERSONS PERSONS WITH SENSORY DISORDER PERSONS WITH NO APPROPRIATE QUALIFICATION ANY OPERATIONS WITH THE UNIT MUST BE PERFORMED ONLY BY PROPERLY QUALIFIED PERSONNEL AFTER THE APPROPRIATE SAFETY BRIEFING THE UNIT INSTALLATION SITES MUST PREVENT ACCESS BY UNATTENDED CHILDREN DELIVERY SET Unit 1 item User s manual 1 item Speed controller for VUT H EC 1 item Control panel for VUT H EC Comfo 1 item Power cable for VUT H EC Comfo 1 item DESIGNATION KEY Unit control _ R 1 010 speed controller Comfo control panel with LCD display Motor type EC electronically commutated Spigot orientation H horizontal Connected air duct diameter 1 150mm 2 160 mm Rated air capacity m h Unit type VUT heat recovery ventilation TECHNICAL PARAMETERS The unit is designed for indoor application with the ambient temperature ranging from 1 C up to 40 C and relative humidity up to 80 The transported air temperature range is from 25 C up to 50 C The unit is classified as a class electric appliance Hazardous parts access and water ingress protection standard u Unit motors IP 44 u Unit assembly connected to air ducts IP 22 The unit design is regularly improved so some models may slightly differ from those ones described
19. ove 2 Heat exchanger maintenance once per year Dame npn perynapHoM TexoOcnyxuBaHun dunbTpoB Ha 6noke pekyriepaTopa MoryT HaKkans NBaTbcA NMbINeBbIe OTNOKEHNA na nop AepKaHuA BbICOKON 3bbeKTUBHOCTU Tennoo6meHa HeO6XOAUMO PeryNAPHO OUMLIaTb pekyriepaTop a ouncTKu pekynepaTopa u3Brle KUTe ero M3 YCTAHOBKN M MIPOMOWTE ero TENUIbiIM BOAHbIM PaCTBOPOM HeilTPanbHOTO MOP LIErO CPE CTBa nocne yero cyxo pekyriepaTopa BCTaBbTe B YCTaHOBKY HEAT EXCHANGER REMOVAL 1 Remove the six triangular screws and take off the side panel 2 Loosen the three screws of the retaining plate Pull the plate aside 3 Pull the heat exchanger to remove 3 Fan maintenance once a year Even regular technical maintenance of the filters may not completely prevent dirt accumulation in the fans which reduces the fan capacity and impairs supply air delivery into the premises Clean the fans with a soft cloth or a brush Do not use water aggressive solvents or sharp objects as they may damage the impeller 4 Condensate system maintenance once a year The condensate drain line may get clogged with dirt and dust particles contained in the exhaust air Check the drain line operation by filling the drain pan under the unit with water clean the U trap and the drain line if necessary Check periodically that the U trap is filled with water 5 Intake grille maintenance twice a year The supply duct grille may get clogged with leaves and othe
20. r objects reducing the unit performance and supply air delivery Check the supply duct grill twice a year and clean it as required 6 Duct system maintenance every 5 years Even regular fulfilling of all the prescribed above maintenance operations may not completely prevent dirt accumulation in the air ducts which reduces the unit performance The air duct maintenance means periodic cleaning or replacement TROUBLESHOOTING Possible faults and troubleshooting Make sure that the unit is properly connected to power No power supply gt P PRY mains and make any corrections if necessary Turn the unit off Troubleshoot the motor jam and the Mower jamn impaler dosein impeller clogging Clean the blades Restart the unit Overcurrent resulted from short circuit in the TEE Turn the unit off Contact the service centre electric circuit Low set fan speed Set higher speed Clean or replace the filter clean the fans and the heat Pollution of filters fans or heat exchanger exchanger Clogging or damage of air ducts diffusers louver shutters grille or other ventilation system components Clean or replace the ventilation system components such as air ducts diffusers louver shutters grilles Extract filter damage Clean or replace the extract filter Check the heat exchanger for freezing In case of need Heat exchanger freezing shut down the unit and turn it on after the freezing danger is not longer im
21. speed The speed controller view is shown below SPEED CONTROLLER R 1 010 O VENTI VUT H EC COMFO CONTROL The unit is controlled by means of the external control panel and the wireless remote control 1 Unit Activation Deactivation The unit is activated deactivated from the control panel with the On Off button From the remote control panel by means of the Unit On Off button J Control panel Remote control panel Unit on off Fan speed up b m mm 08 88 BT L L Meeli on Ean BEN Middle speed activation o SET om am C Wh High speed activation Low speed activation 5 amp Timer activation Scheduled operation deactivation Activation Remote Controller Fan speed control buttons Unit operation mode buttons see details below Unit activation deactivation Panel Display in OFF mode When the unit is off the control panel display indicates We Room temperature Day Time Deactivated status gt m aw i9 05h m L L a C Panel display in ON mode When the unit is on the control panel display indicates We Room temperature Day Time Fan speed status 9 amp S Timer status a ED 19 05h N TIMER ON e Timer operation is shown by the TIMER ON indicator E When the timer is switched off the TIMER OFF i C indicator goes on lt C CD 2 Fan speed control Fan speed control logic Control panel Press the bu
22. tegrated into house cabling The circuit breaker location must provide quick access for emergency shutdown of the unit The circuit breaker trip current must exceed the current consumption of the unit The recommended circuit breaker trip current is 2 A and the recommended minimum wire cross section is 0 75 mm2 The given cross sections are for reference only The wire section selection must be selected in consideration of the wire type maximum permissible wire heating insulation length and installation method either open installation cable channel installation or in wall wiring Use copper wires only Ground the unit in compliance with the local electric standards VUT H EC SPEED CONTROLLER WIRING DIAGRAM speed controller LI NIPE tov CTR GND en GLQLO O40 5 X15 GOON L n fpe 230V 50 60 Hz VUT H EC COMFO UNIT WIRING DIAGRAM The unit is designed for connection to 230 V 50 60 Hz single phase AC mains The unit has a power cord with a Euro plug to connect to a grounded IEC 60884 1 compliant socket shown as XP1 The power cord is pre wired to the X1 terminal block The VUT H EC Comfo unit enables the following external connection options to the X3 terminal block e PK contact for automatic fire extinguishing system While connecting the automatic fire extinguishing system contact remove the jumper between the terminals 1 and 2 In this cas
23. tton to increase the speed or press the button to reduce the speed cyclically i e low middle high speed E Remote control Press the button to increase the speed or press the T button to reduce the speed cyclically i e low middle high speed Remote control Press the H button to select low speed press the button to select middle speed or press the button to activate high speed correspondingly The control panel display shows the current fan speed status Glowing indicator low speed mode Glowing indicator middle speed mode Glowing indicator high speed mode The timer enables automatic switching of the fans to the maximum speed with automatic reset after a set time period from 20 to 60 minutes Timer activation deactivation Control panel to activate the timer press and hold the button and then press the button A single pressing sets the timer to 20 minutes while each subsequent pressing increases the timer setting in 10 minute increments The maximum timer setting is 60 minutes The timer indicator displays the timer countdown instead of the current time To deactivate the timer press and hold the button for 3 seconds Remote control to activate the timer for 20 minutes press the button To deactivate the timer switch the unit off 4 Heat Exchanger Freezing Protection If the exhaust air temperature downstream of the heat exchanger falls below 3 C the supply fan shuts down Wh
24. ut any water containers on the unit i e flower vases Disconnect the unit from power supply prior to maintenance Do not damage the power cable while operating the unit Do not put any objects on the power cable Do not open the operating unit During long term operation of the unit periodically check the mounting for reliability Do not let air flow from the unit be directed to the open flame devices or candles amp WVEWNTS INTRODUCTION This user s manual includes technical description operation installation and mounting guidelines technical data for the heat recovery air handling unit VENTS VUT HEC and VENTS VUT H EC Comfo USE The heat recovery unit is designed to save heat energy by means of heat energy recovery and is one of the energy saving components used in buildings and premises The unit is a component unit and is not designed for stand alone operation The unit enables continuous air exchange by means of mechanical ventilation in private residences offices hotels cafes conference rooms as well as recovery of the waste heat energy contained in the extract air to warm up the clean supply air The unit is designed for wall mounting The unit is rated for continuous operation always connected to power mains Transported air must not contain any flammable or explosive mixtures evaporation of chemicals coarse dust soot and oil particles sticky substances fibrous materials pathogens or any
25. ved by the manufacturer Unit misuse User s violation of the unit installation regulations User s violation of the unit control regulations Unit connection to the power pains with a voltage different from the one stated in the user s manual Unit breakdown due to voltage surges in the power mains User s discretionary repair of the unit Unit repair performed by any non authorised by the manufacturer persons Expiry of the unit warranty period e User s violation of the established regulations specific to the unit transportation User s violation of the unit storage regulations Wrongful acts against the unit committed by third persons Unit breakdown due to circumstances of insuperable force fire flood earthquake war hostilities of any kind or blockade Missing seals if provided by the user s manual Failure to provide the user s manual with the sale date stamp Missing payment document certifying the unit purchase FOLLOWING THE REGULATIONS STIPULATED HEREIN WILL ENSURE A LONG AND TROUBLE FREE OPERATION OF THE UNIT USERS CLAIMS SHALL BE SUBJECT TO REVIEW ONLY UPON PRESENTATION OF THE UNIT THE PAYMENT DOCUMENT AND THE USER S MANUAL WITH THE SALE DATE STAMP DVENTS ACCEPTANCE CERTIFICATE Product Type Heat recovery air handling unit O VUT HEC O VUT H EC Comfo Serialnumber Manufacturing date Is recognized as serviceable The product complies with
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