User`s ManUal Heat (energy / Heat and energy) recovery air
Contents
1. Heat Energy Heat and Energy Recovery Air Handling Unit VUT2 250 P EC VUE2 250 P EC VUTE2 250 P EC VENTS VUA 250 P BG CONTENTS Safety requirements 3 Introduction 5 Use 5 Delivery set 5 Designation key 6 Main technical data 6 Unit design and operating logic 8 Mounting and set up 9 Condensate drainage 9 Connection to power mains 10 Unit control 11 Technical Maintenance 15 Fault handling 17 Storage and transportation rules 18 Manufacturer s warranty 18 Acceptance certificate 20 Seller information 20 Connection certificate 20 Warranty card 21 SAFETY REQUIREMENTS Read the user s manual carefully prior to installing and operating the heat energy heat and energy recovery air handling unit hereinafter Unit Fulfil the operation manual requirements as well as the provisions of all the applicable local and national construction electrical and technical codes and standards The warnings contained in the user s 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 user s manual must be turned over to the receiving operator The symbols used in the present user s manual have the following meaning DO NOT UNIT MOUNTING SAFETY PRECAUTIONS2. The air handling units are intended for operation in closed spaces under ambient air temperatures from 1 C to 60 C and relative humidity up to 80 Hazardous parts access and water ingress protection rating IP 44 for the unit motors IP 22 for the assembled unit connected to the air ducts The unit series designations the main outside and connecting dimensions of the unit as well as its appearance and technical parameters are given in Figure 1 and in Table 1 The unit design is regularly improved so some models can slightly differ from those ones described in this manual Table 1 Unit Technical Parameters VUT2 250 P EC Model VUE2 250 P EC VUTE2 250 P EC Unit voltage V 50 60 Hz 1 230 Maximum fan power W 125 Fan current A 0 87 Max air capacity m h 257 RPM 2930 Sound pressure level at 3 m distance dB A 39 Max transported air temperature C from 25 up to 60 Casing material aluzinc Insulation polypropylene foam 10 mm G4 bag filter Filter air exhaust air supply SFK VUT2 200 250 P P EC G4 Connected air duct diameter mm 125 Heat recovery efficiency up to 89 Heat exchanger type cross flow 2 items VUA 250 P EG UNIT DESIGN AND OPERATING LOGIC The unit operating logic is illustrated in Fig 2 The warm stale air from indoors is supplied into the unit where it undergoes filtration The filtered air is directed into the heat exchangers and extracted outdoors via the
3. PRESENTATION OF THE UNIT THE PAYMENT DOCUMENT AND THE USER S MANUAL WITH THE SALE DATE STAMP DVENTS WU 2 230 P EC ACCEPTANCE CERTIFICATE Product Type Model Serial Number Heat Energy Heat and Energy Recovery Air Handling Unit vu 2250P EC Manufacturing Date is compliant with the technical specifications and is hereby declared ready for service We hereby declare that the 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 Quality Inspector s Stamp SELLER INFORMATION opname id Sase SSSSSOSCSCSCSSSSSC C d This is to certify delivery of the complete unit with the user s manual The warranty ee Seller s seal terms are acknowledged and accepted Customer s signature CONNECTION CERTIFICATE The VU 2 250 P EC heat energy heat and energy recovery air handling unit has been installed and connected to the power mains pursuant to the requirements stated in the present user s manual Company name Address Phone number m Installation technician s full name technician s company This is to
4. a horizontal surface Fig 3 or threaded rods screwed into dowels which are buried into the ceiling Prior to the installation check the unit casing for any left over foreign objects such as plastic film or paper For best operation efficiency the unit should be preceded and followed by straight duct sections at least 1 m in length Min 40 mm Fig 3 Unit installation Condensate drainage The condensate drain pan located in the heat exchanger section is equipped with condensate drain pipes which lead the water away from the unit Connect the drain pipe 1 the U trap 3 not included in the standard delivery set and the sewerage system 5 with metal plastic or rubber pipes 2 and 4 The pipes must be installed at z the minimum gradient of 3 Prior to connecting the unit to the power mains prime the system with water The U trap must be filled with water at all times Check for any obstructions to the free flow of water into the sewerage system to prevent condensate accumulation inside the unit during the heat exchanger operation which in turn may cause equipment failure and water ingress into the premises DVENTS WU 2 250 P EC 5 4 3 2 1 1 Fig 4 Condensate drainage A condensate drainage system is used in premises with above zero temperatures To enable operation at subzero temperatures the condensate drainage system must be equipp
5. air duct system by the extract fan The fresh cold air from outdoors is supplied into the unit where it undergoes filtration The filtered air is directed into the heat exchangers and supplied into the premises by the supply fan The heat exchangers ensure the heat energy exchange between the warm stale air from indoors and the cold fresh air from outdoors without air stream intermixing Such design reduces heat energy losses and helps to minimize heating expenses in the cold season The unit design and operation logic are given in Fig 2 The basic unit equipment includes 1 Extract motor impeller block 2 Supply motor impeller block 3 Cross flow plate heat exchanger 4 G4 extract filter 5 G4 supply filter 6 Condensate drain pan for VUT2 250 P EC unit 2 pieces for VUTE2 250 P EC unit 1 piece VUE2 250 P EC units have no drain pan A Condensate drain pipe for VUT2 250 PEC unit 2 pieces for VUTE2 250 PEC unit 1 piece VUE2 250 P EC units have no drain pipe 8 Control unit 7 SUPPLY AIR INTAKE AIR Ey EXTRACT AIR EXHAUST AIR Y Vz 4 2 8 6 7 Fig 2 Unit design and operating logic amp VENTS Mounting and set up Make sure that the installation location provides for sufficient space as required for the unit maintenance The units are suspended to the ceiling by means of belts rigidly fastened to
6. certify that the works specific to the unit installation has been performed in accordance with all the applicable provisions of local and national construction electrical and technical codes and standards The unit operates normally as intended Installatio by the manufacturer Product type Model Heat energy heat and energy recovery air handling unit VU 2250PEC WARRANTY CARD Serial number Manufacturing date Sales date Warranty period Sales company DVENTS
7. premises to warm up the filtered stream of supply air The unit is designed for extended periods of continuous operation without disconnection from the power mains The transported air must not contain flammable or explosive mixtures chemically active vapours coarse dust soot fats or environments favourable for the formation of hazardous substances toxic substances dust pathogenic germs sticky substances and fibrous materials A THE UNIT IS NOT INTENDED FOR OPERATION BY CHILDREN OR PERSONS WITH REDUCED PHYSICAL MENTAL OR SENSORY CAPACITIES OR LACKING THE APPROPRIATE TRAINING THE UNIT MUST BE HANDLED ONLY BY PROPERLY QUALIFIED PERSONNEL AFTER THE APPROPRIATE BRIEFING THE CHOICE OF UNIT INSTALLATION LOCATION MUST PREVENT UNAUTHORIZED ACCESS BY UNATTENDED CHILDREN DELIVERY SET Unit 1 item User s manual Litem Packing box 1 item Control panel 1 item DVENTS VU2 250 P EC DESIGNATION KEY VUT 2250 PEC Motor Type Electronically commutated EC Design features P suspended mounting Air capacity m h Number of heat exchangers pcs Unit Type VUT Heat Recovery Ventilation VUE Energy Recovery Ventilation VUTE Energy and Heat Recovery Ventilation MAIN TECHNICAL DATA 46 Only for VUT2 250 P EC and VUTE2 250 P EC units Fig 1 Outside and connecting dimensions of the unit
8. 7 Wiring diagram of the unit 4 Heat exchanger freeze protection The air handling unit is equipped with heat exchanger freeze protection facilities which disable the supply fan at 5 C in the exhaust air duct downstream of the heat exchanger 5 Filter replacement indication for DUO 6M901580B only Upon elapsing of the time to filter replacement 3 000 operating hours the control panel indicator will intermittently blink green and red This signals the need to shut down the unit and disconnect it from the power mains Upon completing the above steps clean or replace the filters as necessary see Technical maintenance on page 13 On completing the filter maintenance reset the hour meter To reset the hour meter switch on the unit press the and the buttons simultaneously and hold them for at least 10 seconds until the indicator stops blinking and changes to steady green TECHNICAL MAINTENANCE Maintenance operations of the unit are required 3 4 times per year Maintenance includes regular cleaning and the following operations 1 Filter maintenance Filter Maintenance Frequency e DUO 6T901580 3 4 times a year e DUO 6M901580B according to the filter service alert generated every 3 000 operating hours according to the integrated hour meter Dirty filters increase air resistance in the system and reduce supply air volume The filters require cleaning not less than 3 4 times per year Dirty filters can be re
9. Do not wash the unit with water Avoid penetration of water onto the electric parts of the unit Do not put any water containers e g vases etc on top of the unit Disconnect the unit from the power mains prior to any technical maintenance Avoid damaging the power cable while operating the unit Do not put any foreign objects on top of the power cable Do not open the unit during operation In case of prolonged operation check the unit from time to time for any looseness which may develop in the fasteners Do not direct the air stream produced by the unit onto any combustion appliances or burning candles amp VENTS INTRODUCTION The present user s manual consisting of the technical details operating instructions and technical specification applies to the installation and mounting the VU__2 250 P EC heat energy heat and energy recovery air handling unit hereinafter Unit USE Due to the ability to reduce heat energy losses by means of recycling heat energy heat and energy recovery air handling units have become an important element of energy efficient spaces Being a component unit the air handling unit may not be commissioned for standalone operation The unit is designed to ensure continuous mechanical air exchange in houses offices hotels cafes conference halls and other utility and public spaces as well as to recover the heat energy contained in the air extracted from the
10. Operation mode Button increases air flow in the Setup mode the button is disabled in the Operation mode Button selects ventilation modes Button enters the Setup mode Button switches the unit On Off DUO 6M901580B Button disabled DUO 6T901580 Fig 5 Control Panel 1 Ventilation mode control The air handling unit has three ventilation modes MIN the basic ventilation mode The air flow rate for this mode is selected in the Setup mode according to Table 3 see p 2 Setup Mode 1 NORMAL the air flow rate in this mode is 80 m h higher than in the MIN mode The DUO 6T901580 software automatically reverts the unit to the MIN mode 30 minutes after enabling the NORMAL mode MAX delivers the maximum air flow rate according to the unit specifications The ventilation modes indication is explained in Table 2 To switch between ventilation modes use the button Mode indication LED colour change Operation green Setup red Filter replacement intermittent green red blinking SD VENTS ale VUNOSOIPIEC Table 2 Control panel ventilation mode displa Minimum air flow Time unlimited Minimum air flow 80 Minimum air flow 80 m h m h Time 30 minutes Maximum air flow Time unlimited 2 Setup mode To enter the Setup mode press and hold the Fig 5 for at least 10 seconds until the Operation Setup indicator changes from green to red While in t
11. The unit must be disconnected from the power THE UNIT MUST BE mains prior to installation or GROUNDED repair The unit must not be operated outside the Do not use damaged temperature range stated equipment or conductors in the user s manual and to connect the unit to the in aggressive or explosive power mains environments OO 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 cable length at your own Do not position any discretion heating devices or other Do not bend the power S equipment in close cable proximity to the unit Avoid damaging the power power cable cable YVU2 250 P EG Do not touch the unit controls with wet hands Do not carry out the unit maintenance with wet hands Use the unit only as originally intended Do not connect any drying machines or other similar equipment to the unit and the ventilation circuit Do not sit on the unit or put any foreign objects on top of it Do not let children operate the unit Do not store any flammable gases or highly flammable substances in close proximity to the unit Should the unit generate any unusual sounds smell of smoke disconnect it from the power mains and contact the service centre Do not shut off the air duct during the unit operation al Q RT N AU SAFETY PRECAUTIONS TO BE FOLLOWED WHILE OPERATING THE UNIT
12. ed with heat insulation and pre heating facilities Connection to power mains Disconnect the unit from the power supply prior to any operations on the unit The unit must be plugged into a properly installed power socket with an earthed terminal The rated electrical parameters of the unit are stated on the rating plate Any tampering with the internal connections is prohibited and will void the warranty The units are intended for connection to 230 V 50 60 Hz single phase alternating current mains The power mains connection is via a Euro plug cable pre wired at the factory Connect the unit to power mains through the external automatic circuit breaker with magnetic trip integrated into the fixed wiring system with the rated current not below the rated current consumption refer to Table 1 UNIT CONTROL The unit control panel is designed to run two alternative software versions e DUO 6M901580B installed by default DUO 6T901580 The software version installed on a specific unit is specified on the label attached to the rear side of the control panel The unit is operated via the control panel Fig 5 The control panel displays the main ventilation modes ofthe unit or the MIN minimum speed air flow indicators in the Setup mode Indicator operation setup filter replacement for DUO 6M901580B only Button reduces air flow in the Setup mode the button is disabled in the
13. for ice If the heat exchanger has iced wait till the ice melts before re activating the unit Clean or replace the filters clean the fans and the heat exchanger Check the diffusers and louvres for free opening check the air exhaust hood and the supply grille clean if necessary Make sure that the air ducts are not soiled and damaged Clean the fan impellers Check the mounting screws for any looseness If necessary clean the drain line Check the drain line slope angle and the hydraulic back pressure valve Make sure that the drain line has thermal insulation to prevent freezing YVU2 250 P BG STORAGE AND TRANSPORTATION RULES The unit must be stored in the original packing in a dry ventilated area at temperatures from 10 C to 40 C and maximum relative humidity of 80 at 20 C The air in the storage space must not contain any vapours or admixtures which may lead to corrosion or compromise the insulation and seals Use hoist machinery for handling and transportation to prevent possible mechanical damages of the unit Fulfil the requirements for transportation of the specified cargo type Use any vehicle types for the unit transportation provided that it is protected against mechanical or weather damage Avoid any mechanical shocks and strokes during handling operations MANUFACTURER S WARRANTY The manufacturer hereby warrants normal operation service life of the unit over the per
14. his mode the main ventilation mode indicators display the minimum air flow rate value which corresponds to Speed 1 of the unit according to Table 3 To modify the air flow rate use n button to increase the parameter or the button to decrease it The current air flow rate setting is controlled by means of the six indicators displaying the basic ventilation modes of the unit while the red Operation Setup light is on To exit the Setup mode use one of the two alternative methods either press the or the button once again or wait 60 seconds after the last actuation of either the or the button for the system to exit automatically Upon exiting the Operation Setup indicator will change from red to green 90 105 120 135 150 165 180 195 210 Table 3 See ee el eee YVU2 250 P BG 3 Control panel connection The control panel view from the connector side is given on Fig 6 1 U_ECI control voltage 2 U_EC2 control voltage 3 12V supply voltage 4 Negative power lead Fig 6 Control panel view from connector side The wiring diagram of the unit is shown on Fig 7 A Control board NH 230 VAC power input AC DC HTS 150 48 unit INPUT_EL2 cr Control panel pf oma ern SV ANALOG IN AGND Extract fan Fig
15. iod of 24 months from the retail sale date provided observance of the transportation storage installation and operation regulations Should any malfunctions occur in the course of the unit operation through the Manufacturer s fault during the guaranteed period of operation the user is entitled to elimination of faults by the manufacturer by means of warranty repair at the factory carried out free of charge The warranty repair shall include work specific to elimination of faults in the unit operation to ensure its intended use by the user within the guaranteed period of operation The faults are eliminated by means of replacement or repair of the unit components or a specific part of such unit component The warranty repair does not include e Routine technical maintenance e Unit installation removal e Unit setup To benefit from warranty repair the user must submit the unit the User s Manual with the sale date stamp and the payment document certifying the purchase The unit model must comply with the one stated in the user s manual Contact the Seller for warranty service The manufacturer s warranty does not apply to the following cases e User s failure to submit the unit with the entire delivery package as stated in the user s manual or with missing component parts previously dismounted by the user e Mismatch of the unit model and make with the respective details stated on the unit packaging and in the user s manual e U
16. ser s failure to ensure timely technical maintenance of the unit e External damage to the casing excluding external modifications to the unit as required for installation and internal components caused by the user Alteration of the unit design or engineering changes to the product e Replacement and use of the such unit assemblies parts and components not approved by the manufacturer e Unit misuse e User s violation of the unit storage regulations e User s violation of the unit control regulations e Unit connection to the power mains with a voltage different from the one stated in the user s manual e Unit failure due to voltage surges in the power mains e Discretionary repair of the unit by the user Unit repair by any persons without the manufacturer s authorization Expiration of the unit warranty period User s violation of the unit transportation regulations User s violation of the unit storage regulations Wrongful acts against the unit committed by a third party Unit failure 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 submit the User s Manual with the unit 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 REVIEWED ONLY UPON
17. stored with a vacuum cleaner or replaced Contact the unit Seller to purchase new filters The steps to replace the filters are as follows Fig 8 1 Release the latches and remove the bottom panel 2 Turn the latches and remove the condensate drain pan s 3 Turn the latches and remove the filters 2 Fan inspection once a year Even regular technical maintenance of the filters may not prevent dust accumulation on fan part surfaces resulting in overall unit performance drop and less fresh air supplied to the premises Clean the fans with a cloth or a soft brush Do not use water aggressive solvents sharp objects etc as they may damage the impeller The steps to replace the filters are as follows Fig 8 1 Release the latches and remove the bottom panel 2 Turn the latches and remove the condensate drain pan s 3 Turn the latches and remove the heat exchangers 3 Condensate drainage check once a year The condensate drainage the drain line may get clogged with the hard particles contained in the extract air Check the drain line functionality by filling the unit drain pan with water and clean the siphon and the drain line if necessary 4 Fresh air supply check twice a year The supply grille may get clogged with leaves or other objects resulting in the unit performance drop and less fresh air supplied to the premises Check the supply grille twice a year and clean it if necessary 5 Ductwork system check every 5
18. years Even if you follow all the listed maintenance guidelines some dust can accumulate inside the air ducts and reduce the unit performance Duct maintenance means regular cleaning or replacement 6 Control unit maintenance if necessary The control unit maintenance must be performed by an expert qualified for unassisted operations with electrical installations up to 1 000 V after reading and understanding the user s manual Disconnect the unit from the power mains prior to the control unit maintenance The control unit maintenance steps are as follows Fig 9 1 Undo the eight self tapping screws securing the control unit cover 2 Remove the control unit cover DVENTS YVU2 250 P BG Q 2 ga _ N N Fig 9 Control unit maintenance Problem Fan s do es not start Supply air too cold Low air flow Noise vibration Water leakage Possible malfunctions and their elimination Possible reasons No power supply Exhaust filter clogging Heat exchanger icing Contaminated filters fans or heat exchanger Ventilation system contaminated or damaged Contaminated fan impellers Fan mounting screws loose Drain line clogged damaged or improperly arranged FAULT HANDLING Fault handling Make sure that the unit is properly connected to the power mains and make any corrections if necessary Clean or replace the extract filter Check the heat exchanger
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