User`s manual "VENTS VUT WH" ( PDF 2,49Mb )
Contents
1. U1U2IPE ZUTU2IPE Z PEN y 4211 2 1 112 5 6 5 1 9 2 3 4 718 1 2 1 2 1 2 112 1 2 1 3 U L Lt N d E TIE AC208EM2 LP gem gm gm ZA mg z gt O O Q SMT a SMa PT SM3 eo m mM M2 M2 pom pa TET TE2 TES TE4 TES N L tr sE 3 8 Z ELECTRIC SHOCK HAZARD Vv Fig 17 External wiring diagram for VUT 800 1000 WH b y a H LINPE 1 2 3 4 5 6 7 8 9 l1011112131415 16 1718 1920 21122 23 2425 2612728 2913031132133134 3513637138 A L N PE LINPPE LIJNPPEPE N L 1j2 c nojncc no 1 2 3 6 5 1 9 2 3 4 7 1 2 1 2 1 11 21 1 3 2 1 d 4 t L d L Hh HH I T UiuziPE Z uiuziPEZ lPENTL 1 2 4 2 1 2 1 1 1203 5 6 5 1 9 2 3 4 72. 4 45 5 Air speed inside the heater m s 4 o eo A w Water heater parameters calculation example Air flow through the heater m3 h Air Speed Starting from 950 m3 h on the air flow scale draw a vertical line CD till the air speed axis which makes 3 35 m s N Supply air temperature Prolong the line up to the point where it crosses the outside air temperature descending curve e g 15 C then draw a horizontal line from this point to the left till crossing water in out temperature curve e g 90 70 From this point draw a vertical line to the supply air temperature axis on top of the graphic 23 C Heating coil capacity Prolong the line up to the point where it crosses the outside air temperature ascending curve e g 15 C and draw a horizontal line from this point to the right Water pressure drop kPa until it crosses water in out temperature curve e g 90 70 from here draw a vertical line up to the scale representing the heating coil capacity 13 5 kW Water flow Prolong the line down to water flow axis at the bottom of the graphic 0 141 5 Water pressure drop Draw the line from the point where line crosses the black curve to the pressure drop axis 1 5 kPa Fig 4 Calculation of the VUT 1000 WH 2 water heater parameters 0 05 0 1 0 15 0 2 0
3. ben stallation date Installation technician s company seal This is to 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 by the manufacturer E WARRANTY CARD Product type Heat recovery air handling unit VUT Serial number Manufacturing date Sales date Warranty period Sales company Seller s seal a NOTES
4. Digital input DI Digital output DO Analogue input Al Analogue output AO Fig 16 Functional diagram Table 3 Name sM Supply damper actuator 0 sMo Extract damper actuator SMB Heat exchanger damper actuator 08M Heat medium regulating valve actuator Pe Intake air temperature sensor ae BERCEN hea ODDO e Temperature sensor at downstream of the heat exchanger Return heat medium temperature sensor Water heater freeze protection sensor Supply air temperature sensor Pump dry run protection relay Control panel Supply fan Extract fan Circulation pump Supply filter Extract filter Supply air damper Extract air damper Water heater Cooler Plate heat exchanger eo VENTS a CONNECTION TO POWER MAINS CONNECTION OF THE UNIT TO POWER MAINS IS ALLOWED BY A QUALIFIED ELECTRICIAN WITH A WORK PERMIT FOR THE ELECTRIC UNITS UP TO 1000 V AFTER CAREFUL READING OF THE PRESENT USER S MANUAL THE RATED ELECTRICAL PARAMETERS OF THE UNIT ARE SHOWN ON THE RATING PLATE ANY INTERNAL CONNECTION MODIFICATIONS ARE NOT ALLOWED AND RESULT IN WARRANTY LOSS The unit is rated for connection to 230 V 50 Hz single phase alternating current power mains Fig 17 18 via insulated durable and heat resistant conductors cables wires with respective cross section in any case no less than 2 5 mm2 The above cross section is f
5. 4 45 5 ir speed inside the heater m s g Water heater parameters calculation example Air flow through the heater m3 h Air Speed Starting from 2000 m3 h on the air flow scale draw a vertical line till the air speed axis which makes 3 75 m s Supply air temperature Prolong the line D up to the point where it crosses the outside air temperature descending curve e g 15 C then draw a horizontal line from this point to the left till crossing water in out temperature curve e g 90 70 From this point draw a vertical line to the supply air temperature axis on top of the graphic 22 C Heating coil capacity Prolong the line up to the point where it crosses the outside air temperature ascending curve e g 15 C and draw a horizontal line from this point to the right until it crosses water in out temperature curve e g 90 70 from here draw a vertical line up to the scale representing the heating coil capacity 28 kW Water flow Prolong the line down to water flow axis at the bottom of the graphic 0 35 I s Water pressure drop Draw the line from the point where line crosses the black curve to the pressure drop axis 3 8 kPa Fig 8 Calculation of the VUT 2000 WH 2 water heater parameters NORAD A Water pressure drop kPa Water flow through the water heating coils Performance chart for the VUT 200
6. Water flow through the water heating coils l s DO a Performance chart for the VUT 1000 WH 4 water heater parameters is shown in Fig 5 VUT 1000 WH 4 Air temperature at outlet from the heater C 15 20 25 30 35 40 45 50 55 60 65 Coil heating capacity kW 20 24 28 32 2 S External air temperature C 4 45 5 Air speed inside the heater m s Water heater parameters calculation example Air flow through the heater m3 h Air Speed Starting from 950 m3 h on the air flow scale draw a vertical line till the air speed axis which makes 3 35 m s Supply air temperature Prolong the line up to the point where it crosses the outside air temperature descending curve e g 15 C then draw a horizontal line from this point to the left till crossing water in out temperature curve e g 70 50 From this point draw a vertical line to the supply air temperature axis on top of the graphic 29 C Heating coil capacity Prolong the line up to the point where it crosses the outside air temperature ascending curve e g 15 C and draw a horizontal line 6 from this point to the right until it crosses water in out temperature curve e g 70 50 from here draw a vertical line up to the scale representing the heating coil capacity 16 kW Water flow Prolong the line down to water flow axi
7. 8 11211 211212 1121 3 Y g AC208EM24LP fy gi ew ee C z gt O O O m 9 Sd PT SN eS m M2 M2 T 2 Dor er TET TE2 TES TE4 TES sa ELECTRIC SHOCK HAZARD y n y X Fig 18 External wiring diagram for VUT 1500 2000 WH y ATTENTION MOUNTING AND CONNECTING OF THE AUTOMATIC CONTROL SYSTEM IS ALLOWED BY A QUALIFIED ELECTRICIAN WITH AWORK PERMIT FORTHIS TYPE OF OPERATIONS DISCONNECT THE UNIT FROM POWER MAINS BEFORE ANY SERVICING OR MAINTENANCE OPERATIONS Table4 gt Name Type Wire M1 Supply fan max 1 KW M2 Extract fan max 1 kW M3 Circulation pump max 0 3 kW 3x0 75 mm DD1 Pump dry run protection relay NC 2x0 75 mm SM1 SM2 Air damper actuator LF 230 2x0 75 mm SM4 Water heater valve actuator LR 24 SR 3x0 75 mm SM3 Heat exchanger bypass damper actuator LM 230 PK1 Contact from fire alarm panel NO 2x0 75 mm DIS Control panel SAS908PIT TE1 Intake air temperature sensor ST 01 TE2 Exhaust air temperature sensor STa 02 TES Return heat medium temperature sensor STw 02 TE4 Water heater freeze protection sensor STw 02 TE5 Supply air temperature sensor STa 02 The appliances are not supplied with the unit are available on the separate order Cable length from P1 must not exceed 10 meters Max connecting cable length is 20 m The system can operate without a heat medium pressure relay in
8. Heat medium regulating valve 7 Non return valve 8 Coarse filter Heat medium regulating valve actuator TRE a E Fig 14 Mixing unit diagram a CONDENSATE DRAINAGE The unit must be connected to the drainage system Fig 15 Connect the condensate drain pipe the U trap not included into delivery set and the sewage system with metal plastic or rubber pipes Fig 15 The pipes must be sloped down by min 3 Before starting the unit fill the system with water and check that the U trap is always filled with water Make sure that the water drainage is correct Wrong connection to sewage system may result in condensate accumulation inside the unit The condensate drainage system is designed for operation at the ambient temperature above 0 C If the ambient temperature is below 0 C the condensate drainage system must be heat insulated and pre heated connecting pipe dain pipe sewage system Fig 15 Condensate drainage DO NOT CONNECT SEVERAL UNITS OF THE SAME OR VARIOUS TYPES TO A SINGLE U TRAP DIRECT CONDENSATE DRAINAGE OUTSIDE WITHOUT CONNECTION TO SEWAGE SYSTEM IS NOT ALLOWED m FUNCTIONAL DIAGRAM OUTSIDE e INSIDE Power 230V AC supply 24V AC
9. shown in Fig 12 Example Washer Vibration damping rubber Unit mounting on a horizontal plane Fig 11 Unit mounting A min 600 mm for VUT 800 1000 WH A min 820 mm VUT 1500 2000 WH Fig 12 Minimum mounting distances eo VENTS VUT 1500 WH AND VUT 2000 WH UNITS MODIFICATIONS DEPENDING ON THE SERVICE SIDE Left and right handed modifications are provided for ease of mounting and maintenance EXTRACT AIR SUPPLY AIR Aj INTAKE AIR ae EXHAUST AIR Left handed modification INTAKE AIR E EXHAUST AIR Service side EXTRACT AIR Qa SUPPLY AIR Service side Safety precautions The unit must be mounted to a rigid and stable structure Check the technical parameters and the unit weight The unit must be suspended using anchor bolts Before starting mounting check that the mounting structure has sufficient loading capacity for the unit weight otherwise reinforce it with beams etc After that fix the bolts If the construction strength or surface is not rigid enough it can resonate with the unit and create abnormal noise and vibration While mounting the unit provide enough service space and an access door in the ceiling for inspection and maintenance of the filters heat exchanger and fans One access door is required for each unit For details refer the outline drawing ref Fig 1 Insert
10. the anchor bolt inside the mount for the fixing bracket and fix it with nuts and washers Make sure the unit casing has no foreign objects inside like paper and foil If the bolts used for the unit mounting are too short the unit can generate abnormal noise and resonate with the ceiling If the connection point to the spiral seam duct is supposed to be the source of the abnormal noise install a flexible air duct instead of the spiral seam one The precautions referred above are normally sufficient to solve the resonance problem For the better effect you may use anti vibration connectors To ensure the best performance of the unit provide a straight 1 m duct section on both sides of the unit while mounting Access to the unit must be prevented by installing a protecting grille or any other device with the mesh width up to 12 5 mm In order to attain maximum power the water heater should be counter flow connected Fig 13 All calculation diagrams ref Fig 2 9 page 5 9 are valid for the counter flow connection of the water heater In case of the direct flow connection the water heater has lower power but higher frost resistant properties a direct flow connection b counter flow connection Fig 13 Water heat connection Mixing unit diagram not included into delivery set of the water heater is shown in Fig 14 Mixing unit diagram 1 Water heater 2 Shutoff valves 3 Circulation pump 4 Bypass damper 5 Boiler 6
11. the point where it crosses the outside air temperature descending curve e g 15 C then draw a horizontal line from this point to NOR ADA the left till crossing water in out temperature curve e g 70 50 From this point draw a vertical line to the supply air temperature axis on top of the graphic 29 C Heating coil capacity Prolong the line up to the point where it crosses the outside air temperature ascending curve e g 15 C and draw a horizontal line from this point to the right until it crosses water in out temperature curve e g 70 50 from here draw a vertical line up to the scale representing the heating coil capacity 16 kW Water flow Prolong the line down to water flow axis at the bottom of the graphic 0 2 1 5 Water pressure drop Draw the line from the point where line crosses the black curve to the pressure drop axis 2 1 kPa Fig 3 Calculation of the VUT 800 WH 4 water heater parameters Performance chart for the VUT 1000 WH 2 water heater parameters is shown in Fig 4 Air temperature at outlet from the heater C VUT 1 000 WH 2 5 10 15 20 25 30 35 40 45 50 55 Water pressure drop kPa 005 0 1 0 5 02 025 03 035 0 4 Water flow through the water heating coils l s Coil heating capacity KW 8 10 12 14 16 18 20 22 5 ol i External air temperature C
12. 0 WH 4 water heater parameters is shown in Fig 9 Air temperature at outlet from the heater C VUT 2000 WH 4 15 20 25 30 35 40 45 50 55 60 65 Coil heating capacity kW 40 50 60 External air temperature C 4 45 5 lir speed inside the heater m s Water heater parameters calculation example Air Speed Starting from 2000 m3 h on the air flow scale draw a vertical line CD till the air speed axis which makes 3 75 m s Air flow through the heater m3 h Supply air temperature Prolong the line up to the point where it crosses the outside air temperature descending curve e g 15 C then draw a horizontal line from this point to the left till crossing water in out temperature curve e g 70 50 From this point draw a vertical line to the supply air temperature axis on top of the graphic 31 C Heating coil capacity Prolong the line up to the point where it crosses the outside air temperature ascending curve e g 15 C and draw a horizontal line G from this point to the right until it crosses water in out temperature curve e g 70 50 from here draw a vertical line up to the scale representing the heating coil capacity 35 kW Water flow Prolong the line down to water flow axis at the bottom of the graphic 0 43 V s Water pressure drop Draw the line from the point where line crosses the black cur
13. 650 1850 1100 1150 48 60 49 65 25 up to 45 25 up to 40 25 up to 45 25 up to 40 Aluzinc 50 mm mineral wool G4 G4 F7 optional 250 0315 88 99 up to 78 96 up to 77 96 Cross flow Aluminium 1 1 7 E 1 7 Performance chart for the VUT 800 WH 2 water heater parameters is shown in Fig 2 E z 7 E 1 Air temperature at outlet from the heater C VUT 800 WH 2 Coil heating capacity kW 5 10 15 20 25 30 35 40 45 50 55 10 12 14 16 18 20 22 g g OH 5 2 s e E v E a o E B 7 E 7 E n E 7 7 7 E 1 7 E 7 EI 4 4 5 Air speed inside the heater m s 8 8 8 8 8 8 88 8 8 8 E o Water heater parameters calculation example Air flow through the heater m3 h 5 Air Speed Starting from 950 m3 h on the air flow scale draw a vertical line CD till the air speed axis which makes 3 35 m s E H Supply air temperature Prolong the line up to the point where it crosses the outside air temperature descending curve e g 15 C then draw a horizontal line from this point to x the left till crossing water in out temperature curve e g 90 70 From this point draw a vertical line to the supply air temperature axis on top of the graphic 23 C E A Heating coil capacity Prolong the line up to the point where it cro
14. TE 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 s Unit 1 item n Wall mounted control panel 1 item User s manual 1 item m Control panel user s manual 1 item m Packing box 1 item E DESIGNATION KEY VUT X WH X X Modification VUT 1500 WH VUT 2000 WH L left R right Number of water heating coils 2 4 Spigot orientation H horizontal Heater type W water heater Air capacity m h 800 1000 1500 2000 Unit type VUT ventilation with heat recovery iE pd 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 96 Hazardous parts access and water ingress protection rating n IP 44 for the unit motors n IP 22 for the assembled unit connected to the air ducts The unit overall and connecting dimensions external view technical data are shown in Fig 1 and in Tables 1 and 2 The unit design is regularly improved so some models can slightly differ from those ones described in this manual Fig 1 Overall and connecting dimensions Table 1 VUT VUT VUT VUT VUT VUT 800 800 1000 1500 2000 2000 WH 2 WH 4 WH 4 WH 2 WH 2 WH 4 1112230 2 0 49 0 82 0 98 1 30 2 16 3 6 43 5 68 780 1100 1700 2100 1
15. USER S MANUAL VUT 800WH VUT 1000 WH VUT 1500WH VUT 2000 WH HEAT RECOVERY AIR HANDLING UNIT O VENTES C MENTS CONTENTS Safety requirements 3 Introduction 5 Use 5 Delivery set 5 Designation key 5 Technical data 6 Unit design and operating logic 12 Mounting and set up 13 Condensate drainage 16 Functional diagram 17 Connection to power mains 18 Unit control 19 Maintenance 19 Fault handling 20 Storage and transportation rules 20 Manufacturer s warranty 21 Acceptance certificate 22 Seller information 22 Connection certificate 22 Warranty card 23 KORALE E SAFETY REQUIREMENTS Read the user s manual carefully prior to the operation and installation of the heat recovery air handling unit Fulfill 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 requirements 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 control panel user s manual must be turned over to the receiving operator Symbol legend used in the manual AN DO NOT UNIT MOUNTING AND OPERATION SAFETY PRECAUTIONS The unit must be disconnected from power supply p
16. aintenance 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 a 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 eo MENTS INTRODUCTION This user s manual includes technical description operation installation and mounting guidelines technical data for the heat recovery air handling unit VENTS VUT WH hereinafter referred as the unit The unit with heat recovery and a water heater is designed to save heat energy by means of heat recovery and is one of the energy saving components used in the buildings and premises The unit is a component part and is not designed for independent operation The unit is designed to provide permanent controlled air exchange by means of mechanical ventilation in houses offices hotels caf s meeting halls and other mechanically ventilated premises as well as utilization of extract air heat energy to warm up supply purified air 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 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 APPROPRIA
17. ealed There is a control unit on the top panel of the unit where the terminal box is located The cables must be routed to the terminal box through the cable lead ins The wiring diagram for connection of the unit to power mains is shown on the inner side of the control unit extract filter electronic control block plate cross flow heat exchanger wall remote control panel supply air filter supply fan water heater extract fan bypass condensate drain pan drain pipe extract air intake air es q supply air exhaust air Fig 10 Unit design and operating logic The unit basic modification includes n external wall mounted control panel that is connected to the control system via a cable m supply and extract fan with forward curved blades and maintenance free external rotor motors with integrated overheating protection A plate cross flow heat exchanger m water heater m supply filter with G4 filter class F7 is optional m extract filter with G4 filter class OE o The unit may be suspended on a threaded rod that is fixed inside a dowel or may be rigidly fixed on a horizontal plane Fig 11 While mounting the unit provide enough access for unit servicing and maintenance The minimum distances from the unit to the mounting planes is
18. es the outside air temperature ascending curve e g 15 C and draw a horizontal line from this point to the right until it crosses water in out temperature curve e g 90 70 from here draw a vertical line up to the scale representing the heating coil capacity 28 kW Water flow Prolong the line down to water flow axis at the bottom of the graphic 0 35 l s Water pressure drop Draw the line from the point where line crosses the black curve to the pressure drop axis 3 8 kPa Fig 6 Calculation of the VUT 1500 WH 2 water heater parameters 0 1 0 2 0 3 Water flow through the water heating coils 0 4 0 SN OR OO o Water pressure drop kPa Water pressure drop kPa Performance chart for the VUT 1500 WH 4 water heater parameters is shown in Fig 7 Air temperature at outlet from the heater C VUT 1 500 WH 4 20 25 30 35 40 45 50 55 60 65 Coil heating capacity kW External air temperature C 4 45 5 ir speed inside the heater m s Water heater parameters calculation example Air flow through the heater m3 h Air Speed Starting from 2000 m3 h on the air flow scale draw a vertical line CD till the air speed axis which makes 3 75 m s Supply air temperat
19. nd relative humidity maximum 60 at 20 C Vapours or particles which can cause corrosion or damage the insulation or connection tightness are not allowed in the storage environment Use hoist machinery for handling and transportation to prevent possible mechanical damages of the unit Fulfill the requirements for transportation of the specified cargo type during cargo handling operations 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 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 due to manufacturer s fault during the warranty period the user is entitled to elimination of faults by means of warranty repair performed by the manufacturer The warranty repair includes work 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 e routine maintenance unitinstallation dismantling e Uunitsetup To benefit from warranty repair the user m
20. or reference only The applicable cable cross section must be selected depending on the wire type its maximum temperature and insulation the maximum current the wire length and its installation method Use copper wires only The unit must be grounded Connect the unit to power mains through the terminal block which is located in the control unit on the top of the unit in compliance with the wiring diagram and the terminal marking Connect all the control and supply cables in compliance with the terminal marking and polarity Connect the unit to power mains through the external automatic switch with thermal magnetic circuit breaker integrated into the fixed wiring system The trip current should be not lower than the current consumption ref Table 2 x1 o9 l1011h12h3l14l1 5h 6l1718l19f20f2112212312412512627281293031l32l33l34l35 A L N pEl L N PE PE N TIMET FH 2x1 mm lt u fon Ui I L EIL i Fl
21. rior to any The unit must be grounded installation or repair operation The unit must not be operated outside the temperature range stated in the user s manual and in aggressive or explosive environments Do not use damaged equipment or conductors to connect the unit to power mains While installing the unit follow the safety regulations specific to Unpack the unit with care the use of electric tools Do not change the power cable Do not position any heating length at your own discretion Do devices or other equipment not bend the power cable Avoid in close proximity to the unit damaging the power cable power cable eo VENTS Do not touch the unit controls with wet hands Do not carry out the unit maintenance with wet hands Do not wash the unit with water Protect the unit electric parts from water ingress Keep combustible gases and inflammable products away of the unit Do not let children operate the unit Do not sit on the unit and do not put any objects on it In case of unusual sounds odours or smoke disconnect the unit from power supply and contact the service centre Do not block the air duct when the unit is on Use the unit only as intended by the manufacturer Do not connect a clothes dryer or other similar equipment to the unit or the ventilation system Do not put any water containers on the unit i e flower vases Disconnect the unit from power supply prior to m
22. s are allowed for cleaning to prevent the impeller damage 4 Condensate drainage inspection once per year The drain pipes may get clogged with the extracted particles Pour some water inside the drain pan to check the pipe for clogging Clean the U trap and the drain pipe if required 5 Supply air flow control twice per year Leaves and other pollutions can clog the supply air grille and reduce the unit performance and supply air volume Check the supply grille twice per year and clean it as required 6 Ductwork system inspection once in 5 years Even if you follow all the listed maintenance guidelines some dust can get accumulated inside the air ducts and reduce the unit performance Duct maintenance means regular cleaning or replacement 5 Exhaust louvre shutters and intake diffusers cleaning as required Remove the diffusers and the grilles and wash them with warm water and mild detergent solution Do not change locations of the diffusers and the louvre shutters INSPECT THE HOOD AND THE INTAKE GRILLE ONCE PER YEAR AND CLEAN AS REQUIRED LO VENTI FAULT HANDLING Table 5 Make sure the power supply line is connected correctly otherwise Noponen Suey troubleshoot the connection error Turn the unit off Troubleshoot the motor jamming Clean the blades Motor is jammed the blades are soiled Bestartthe unit Alarm in the system Remove the system alarm Restart the unit High current consumption due to shor
23. s at the bottom of the graphic 0 2 1 5 Water pressure drop Draw the line from the point where line crosses the black curve to the pressure drop axis 2 1 kPa Fig 5 Calculation of the VUT 1000 WH 4 water heater parameters Performance chart for the VUT 1500 WH 2 water heater parameters is shown in Fig 6 VUT 1500 WH 2 Air temperature at outlet from the heater C 5 10 15 20 25 30 35 40 45 50 55 0 05 0 1 0 15 02 025 0 3 Water flow through the water heating coils I s 0 35 0 4 Coil heating capacity kW 12 18 24 30 36 42 5 S Y S e External air temperature C M S N 4 45 ir speed inside the heater m s Water heater parameters calculation example Air Speed Starting from 2000 m3 h on the air flow scale draw a vertical line CD till the air speed axis which makes 3 75 m s Air flow through the heater m3 h Supply air temperature Prolong the line up to the point where it crosses the outside air temperature descending curve e g 15 C then draw a horizontal line from this point to the left till crossing water in out temperature curve e g 90 70 From this point draw a vertical line to the supply air temperature axis on top of the graphic 22 C Heating coil capacity Prolong the line up to the point where it cross
24. s specific to the unit transportation e users violation of the unit storage regulations e wrongful acts against the unit committed by third persons e unit breakdown due to circumstances of insuperable force fire flood earthquake war hostilities of any kind or blockade e missing seals if provided by the user s manual e failure to provide the user s manual with the sale date stamp e 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 eo VENTS a ACCEPTANCE CERTIFICATE Product Type Heat recovery air handling unit VUT WH SerialNumber Manufacturing Date is compliant with the technical specifications and is hereby declared ready for service Quality Inspector s Stamp a SELLER INFORMATION Shop name Address Sales date This is to certify delivery of the complete unit with the user s manual The warranty terms are EU m acknowledged and accepted Sellers caa Customer s signature a CONNECTION CERTIFICATE VUT WH heat recovery air handling unit has been connected to power mains pursuant to the requirements stated in the present user s manual Company name Address Installation technician s full name instalatia dete Signature
25. sses the outside air temperature ascending curve e g 15 C and draw a horizontal line from this point to the right E r 7 until it crosses water in out temperature curve e g 90 70 from here draw a vertical line up to the scale representing the heating coil capacity 13 5 kW z Water flow Prolong the line down to water flow axis at the bottom of the graphic 0 14 s 0 05 0 1 0 15 02 025 Water pressure drop Draw the line from the point where line crosses the black curve to the pressure drop axis 1 5 kPa Water flow through the water heating coils Us E 1 7 5 E Fig 2 Calculation of the VUT 800 WH 2 water heater parameters E z 1 E E 7 E 1 E E 1 b 7 N E N 5 b E b 1 Performance chart for the VUT 800 WH 4 water heater parameters is shown in Fig 3 Air temperature at outlet from the heater C VUT 800 WH 4 15 20 25 30 35 40 45 50 55 60 65 I Coil heating capacity KW 12 16 20 24 28 32 s S External air temperature C 30 4 35 4 45 5 Air speed inside the heater m s Water heater parameters calculation example Air flow through the heater m3 h Air Speed Starting from 950 m3 h on the air flow scale draw a vertical line till the air speed axis which makes 3 35 m s Supply air temperature Prolong the line up to
26. t circuit in power line Low set air flow Switch the unit to higher speed Filters fans or the heat exchanger are soiled Clean or replace the filters clean the fan s and the heat exchanger Jus veniun yee components eir cueis Clean or replace the ventilation system components air ducts diffusers diffusers louvre shutters grilles are soiled or 2 louver shutters grilles damaged Air dampers diffusers or louvre shutters are Make sure that the air dampers diffusers or louver shutters are fully Turn the unit off Contact the service centre closed opened The extract filter is soiled Clean or replace the extract filter Check the heat exchanger for freezing Turn the unit off if required and restart it after the freezing danger is no longer imminent The heat exchanger is frozen Malfunction of the water heater Contact the service centre The impeller s is clogged Clean the impeller s Loose screw tightening Tighten the screws No anti vibration mounts Install the rubber anti vibration mounts not included into delivery set The drainage system is soiled damaged or Clean the drainage system Check the drain line slope angle Make sure arranged not correctly that the U trap is filled with water and the drain pipes are frost protected a STORAGE AND TRANSPORTATION RULES Store the unit in the manufacturer s original packing box in a closed ventilated premise with temperature range from 10 C to 40 C a
27. the DD1 heater in this case a jumper should be installed between the contacts 11 and 12 for VUT 800 1000 WH or between the contacts 14 and 15 for VUT 1500 2000 WH a UNIT CONTROL The unit is equipped with a built in electronic automatic control unit and a control panel ref Control panel user s manual MAINTENANCE Maintenance operations of the unit are required 3 4 times per year Maintenance includes regular cleaning and the following operations 1 Filter maintenance 3 4 times per year 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 Vacuum cleaning is allowed After two consecutive cleanings filters must be replaced Contact the unit Seller to purchase new filters 2 Heat exchanger inspection once per year Some dust may accumulate on the heat exchanger block even in case of regular maintenance of the filters To maintain the high heat exchange efficiency regular cleaning is required To clean the heat exchanger pull it out of the unit and clean it with flush it with warm detergent solution After cleaning install the dry heat exchanger back to the unit 3 Fan inspection once per year Even in case of regular maintenance of the filters some dust may accumulate inside the fans and reduce the fan performance and supply air flow Clean the fans with a soft brush or cloth No water and abrasive detergent sharp objects or solvent
28. ure Prolong the line up to the point where it crosses the outside air temperature descending curve e g 15 C then draw a horizontal line from this point to the left till crossing water in out temperature curve e g 70 50 From this point draw a vertical line to the supply air temperature axis on top of the graphic 31 C Heating coil capacity Prolong the line up to the point where it crosses the outside air temperature ascending curve e g 15 C and draw a horizontal line from this point to the right until it crosses water in out temperature curve e g 70 50 from here draw a vertical line up to the scale representing the heating coil capacity 35 kW Water flow Prolong the line down to water flow axis at the bottom of the graphic 0 43 I s Water pressure drop Draw the line from the point where line crosses the black curve to the pressure drop axis 9 kPa Fig 7 Calculation of the VUT 1500 WH 4 water heater parameters Performance chart for the VUT 2000 WH 2 water heater parameters is shown in Fig 8 Air temperature at outlet from the heater C VUT 2000 WH 2 10 15 20 25 30 35 40 45 50 55 O 9 Water pressure drop kPa Water flow through the water heating coils l s Coil heating capacity kW External air temperature C
29. ust provide the unit the user s manual with stamped sale date and the payment document certifying the purchase The unit model must comply with the one stated in the user s manual Contact the unit Seller for warranty service The manufacturer s warranty does not apply to the following cases e users 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 e mismatch of the unit model and make with the respective details stated on the unit packing and in the user s manual e users failure to ensure timely technical maintenance of the unit e 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 e replacement and use of the unit assemblies parts and components not approved by the manufacturer unit misuse e users violation of the unit installation regulations e users violation of the unit management regulations e unit connection to the power mains with a voltage different from the one stated in the user s manual unit breakdown due to voltage surges in the power mains e users discretionary repair of the unit e unit repair performed by any persons not authorized by the manufacturer e expiry of the unit warranty period e users violation of the established regulation
30. ve to the pressure drop axis 9 kPa Fig 9 Calculation of the VUT 2000 WH 4 water heater parameters 0 2 03 04 05 06 07 08 Water flow through the water heating coils I s Water pressure drop kPa eo VENTS a UNIT DESIGN AND OPERATING LOGIC The unit has the following operating logic Fig 10 Warm stale extract air from the room flows through the air ducts to the unit is purified in the extract filter supplied to the heat exchanger and exhausted outside by the exhaust fan Clean cold air from outside is moved by supply fans to the unit where from it is directed to the supply filter Then cleaned air flows through the heat exchanger and is supplied to the room through the air ducts Heat energy of warm extract air is transferred to clean intake fresh air from outside and warms it up Heat recovery minimizes heat losses energy demand and operating costs for warming up supply air in cold seasons The unit is a framework construction that includes a frame made of six rigidly fixed 50 mm thick sandwich panels The three layer sandwich panels are made of two galvanized sheets internally filled with heat and sound insulated mineral wool layer The air handling unit is equipped with quick detachable service panels for scheduled repair and maintenance operations The panels are specially s
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