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Operation and Maintenance

Envistar Flex

DSEF191101.05.EN

Continuous product development may give rise to specification changes without notice.

6.4 Plate heat exchanger (code EXP)

The purpose of the plate heat exchanger is to recover heat from the extract air

and transfer this heat to the supply air in order to minimise energy use.

Faults in plate heat exchanger functionality result in reduced heat recovery

efficiency and increased energy use and means that the design supply air

temperature cannot be obtained when the outdoor temperature is low.

Possible reasons for reduced recovery efficiency could be the fouling of the

heat-exchanging surfaces (fins) or that the bypass damper is not closing

completely.

A reduction of the extract air flow, e.g. due to fouling of the extract air filter,

entails reduced heat recovery efficiency.

If operation problems arise due to ice build-up on the extract air side, the

function of the frost protection equipment should be checked.

Crossflow plate heat exchanger, EXP

Counterflow flow plate heat exchanger, EXM

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Содержание Envistar Flex 060

Страница 1: ...Operation and Maintenance Envistar Flex 060 1540 Home Concept FTX Flex 060 850 Order number Project Translation of the original instructions ...

Страница 2: ...luminium Excl filter Cooling unit ECO ECX Reversible heat pump TCH Home Concept configuration Control equipment MX US UC MK HS Unit parts and accessories Plate heat exchanger EXP Counter flow exchanger EXM Rotary heat exchanger EXR Run around coil unit EXL Air heater water EMT VV ELEV ThermoGuard ESET TV ELTV Air heater electric ESET EV ELEE Eff var 1 2 3 4 5 Air cooler water ESET VK ELBC ESET DX ...

Страница 3: ...rigerant 7 2 7 Extended warranty 8 2 8 Spare parts 8 2 9 Dismantling and decommissioning 8 3 Technical description 3 1 Envistar Flex air handling unit 9 4 Wiring instructions and fuse protection 4 1 MX Complete control equipment Complete electrical connection to terminal without controller unit 10 4 2 MK Fans and heat exchangers electrically connected to terminal 11 4 3 HS US Without control and w...

Страница 4: ... 6 6 Air heater water code EMT VV MIE CL ELEV 38 6 7 Air heater electric code ESET EV MIE EL ELEE 40 6 8 Air cooler water code ESET VK ESET DX MIE CL ELBC MIE CL ELBD 42 6 9 Fan unit code ELFF 44 6 10 Dampers code ESET TR EMT 01 48 6 11 Outdoor intake section with shut off damper code MIE IU 49 6 12 Outdoor exhaust air section with shut off damper code EAU 50 6 13 Recirculating unit with shut off ...

Страница 5: ...thguard protective mask Fall protection 1 2 Prevent injury to personal or damage to air handling units To avoid injury to persons or damage to air handling units pay attention to the following Read the entire document before working on the unit Comply with national and local laws and regulations for work safety Do not wear loose clothing or jewellery that may get fasten Do not step or climb on the...

Страница 6: ...e The following warning symbols and signal words are used in this document to inform of risks DANGER Danger indicates an imminent dangerous situation which if not avoided can result in death or serious injury WARNING Warning indicates a potentially dangerous situation which if not avoided can lead to serious injury CAUTION Caution indicates a less potentially dangerous situation which if not avoid...

Страница 7: ...is not designed for starting stopping the unit Always use the service switch in the control equipment to start and shut down the unit Electrical connection DANGER Risk of serious injury Electrical power can cause electric shock burns and death Working on servicing the unit Shut down the unit via the service switch in the control equipment then turn the safety switch to the 0 position and lock it T...

Страница 8: ...eat pump WARNING Risk of personal injury Hot surfaces can cause burns Working on servicing the unit Shut down the unit via the service switch in the control equipment then turn the safety switch to the 0 position and lock it There may be several safety switches serving the different parts of the unit All safety switches must be switched off before repairs service Wait at least 30 minutes before op...

Страница 9: ... unit via the service switch in the control equipment then turn the safety switch to the 0 position and lock it There may be several safety switches serving the different parts of the unit All safety switches must be switched off before repairs service Wait at least 3 minutes before opening inspection doors Damper WARNING Risk of personal injury Moving parts can cause crushing injuries Never place...

Страница 10: ... potentially explosive environments Eex 2 2 Manufacturer The Envistar air handling units AHUs are manufactured by IV Produkt AB Sjöuddevägen 7 SE 350 43 VÄXJÖ 2 3 Designations Envistar Flex air handling units consist of a number of different block sections Each block section is supplied with a model identification label located on the inspection side The model plate shows the order number and the ...

Страница 11: ...re TS Temperature range Protection level low Protection level high Refrigerant Fluid group GWP Refrigerant charge Circuit 1 Refrigerant charge Circuit 2 Refrigerant charge Circuit 3 IV Produkt AB VÄXJÖ SWEDEN Contains fluorinated greenhouse gases covered by the Kyotot protocol bar e bar e C bar e bar e kg kg kg ton CO2e ton CO2e ton CO2e Typical CE label for cooling units For units without integra...

Страница 12: ...ty a complete documented and signed IV Produkt Service and Warranty Manual must be presented 2 8 Spare parts Spare parts and accessories for this unit can be ordered from IV Produkt s nearest sales office When ordering the order number and designation must be given These are stated on a model type plate affixed to each component There is a separate spare parts list for the unit refer to Order Uniq...

Страница 13: ...ly air and can be freely selected right hand or left hand up or down The units are equipped with either a rotary heat exchanger counter flow heat exchanger plate heat exchanger or run around coil unit The units are also available as single stacked supply air or extract air units in sizes 060 600 For more convenient transport the unit can be delivered in block form in size 360 600 The units can be ...

Страница 14: ...electrically to the terminal The terminal connections are positioned at a shared place in the unit For further connection to an external process unit we recommend using a multi conductor cable Main switch The main switch is located on the unit s control equipment Wiring diagrams For wiring diagrams for units with control equipment see the order unique wiring diagram supplied with the unit at docs ...

Страница 15: ...t but with fans and heat exchangers connected electrically to terminals Connections to terminal blocks are located on each unit section Safety switch A safety switch must be fitted and wired on each power supply Wiring instructions and fuse protection For wiring instructions and recommended fuses refer to Order Unique Documentation at docs ivprodukt com Terminal Connection and Technical Data Recom...

Страница 16: ...e following pages Recommended fuse protection refers to fuses with type C characteristics Safety switch A safety switch must be fitted and wired on each power supply Fan power supply and fuse protection For separate power supply of each fan read and note the Type from the fan data plate NB The fans may be different sizes variants Read both the supply air and extract air fan labels For the relevant...

Страница 17: ...ow Grön Green PE L1 N Kraftmatning 1 230 V 50 Hz Power supply 1 230 V 50 Hz INKOPPLING WIRING Ziehl 1 230 V BD MX IVP styr IVP Controls MK UC US Extern styr External Controls Art Nr 19151 0430_02 4 4 Wiring instructions Fan code ELFF Ziehl EC 1 230 V 1 30 1 35 kW fan impeller 031 035 Size 100 190 ELFF 031Z EC02 0130 2 F 0 ELFF 031Z EC02 0130 2 F M ELFF 031Z ECA2 0130 2 F M ELFF 035Z EC02 0135 2 F ...

Страница 18: ...run Brown Brun Brown Grå Grey GND A in 1U 0 10V Grön Green PE L1 L2 Kraftmatning 3 400 V 50 Hz Power supply 3 400 V 50 Hz MX IVP styr IVP Controls L3 MK UC US Extern styr External controls Art Nr 19151 0402_02 Ziehl EC 3 400 V 2 50 3 70 kW fan impeller 040 Size 150 190 ELFF 040Z EC02 0250 2 F 0 ELFF 040Z EC02 0250 2 F M ELFF 040Z ECA2 0250 2 F M ELFF 040Z EC02 0370 2 F 0 ELFF 040Z EC02 0370 2 F M ...

Страница 19: ...rey Grön Green Gul Yellow Brandfunktion Fire mode Rosa Pink 11 14 Vit White Brun Brown Grön Green PE L1 L2 L3 A D B D Vit White Blå Blue Brun Brown GND A D B D FLÄKT A FAN A E1 GND D1 24 V E1 GND D1 24 V Gul Yellow Grå Grey Ref Ref INKOPPLING FLERA FLÄKTAR WIRING SEVERAL FANS ZIEHL 3 400 V DC DG GG DOMEL PFJ1 3 400 V 4 3 6 5 kW fan impeller 063 071 Size 480 980 ELFF 063G PFJ1 0430 1 F 0 ELFF 063G ...

Страница 20: ...ite Blå Blue Brun Brown Bus B Bus A GND INKOPPLING DUBBELFLÄKT WIRING DOUBLE FAN 2 OJ DV 3 400 V EBM EC dual fans 2 3 400 V 1 74 5 7 kW fan impeller 2 x 045 056 Size 400 980 ELFF 045E EC01 0174 2 F D ELFF 045E EC01 0174 2 F W ELFF 045E EC01 0290 2 F D ELFF 045E EC01 0290 2 F W ELFF 050E EC01 0345 2 F D ELFF 050E EC01 0345 2 F W ELFF 050E EC01 0570 2 F D ELFF 050E EC01 0570 2 F W ELFF 056E EC01 033...

Страница 21: ...LFF 056Z EC02 0520 2 F Y ELFF 056Z ECA2 0520 2 F Y Art Nr 19151 0435_00 A D B D Rosa Pink Vit White Gul Yellow Grön Green Blå Blue A D B D 11 14 Styrning 0 10 V Control 0 10 V RS 485 Modbus LARM Bryter vid larm ALARM Opens when triggered Vit White Brun Brown Brun Brown GND Grå Grey PE L1 L2 Kraftmatning Power supply 3 400 V 50 Hz MX IVP styr IVP Controls L3 MK UC US Extern styr External controls N...

Страница 22: ...notice 4 5 Wiring instructions Air heater electric code ESET EV ELEE For power supply refer to order specific documentation at docs ivprodukt com Technical Data With integrated control equipment code ELEE xxx HS Y G0 PE L3 L2 L1 7 8 PE 1 2 3 4 NC NO POWER SUPPLY CONTROL 0 10 V DC OPERATION 1 230 V AC ALARM CLOSES BETWEEN 3 4 IN EVENT OF ALARM ...

Страница 23: ...changer code EXR EXRD Size 060 1540 OJ Electronics 2 0 10V 1 GND 10 NO 9 C 8 NC L N PE CONTROL POWER SUPPLY 1 230 V AC ALARM CLOSES IN EVENT OF ALARM Size 1250 1540 IBC control w S br 1 230 V AC 3 230 V AC max 370 W A1 A2 A3 1 2 6 10 12 3 5 9 11 L N V W U 13 14 15 T T 1 M 2 3 4 5 3 Rota tion monitor Manual high low speed Input signal Run Reset Alarm relay max 2 A 250 V AC Thermal contact ...

Страница 24: ...ign of the duct system and the settings configuration of the control system e g gradual start of fans open damper when the fans are in operation 5 2 Actions in case of standstill According to guidelines for hygienic design VDI 6022 Part 1 In case of prolonged standstill in air treatment systems more than 48 hours it should be ensured that no moist areas can be found downstream of the cooling coils...

Страница 25: ...ith control equipment code MX The validity of the product warranty is conditional on the system having been commissioned correctly Working on the unit during the warranty period without the approval of IV Produkt shall render the warranty void Prior to commissioning the contractor must DANGER Risk of serious personal injury and or damage to air handling unit Read and understand the entire chapter ...

Страница 26: ...ignature signature signature Counter flow plate heat exchanger EXM EXP Visual inspection Clean if necessary Check function 33 signature signature signature signature Run around coil unit EXL Visual inspection Check drainage Clean if necessary Check function 36 signature signature signature signature H O 2 Air heater water EMT VV MIE CL ELEV ESET TV MIE CL ELTV Visual inspection Clean if necessary ...

Страница 27: ...n if necessary 52 signature signature signature signature DX DX Cooling hea ting pump TCH Refer to separate Ope ration and Maintenance Instructions signature signature signature signature Cooling unit EcoCooler ECO ECX Refer to separate Ope ration and Maintenance Instructions signature signature signature signature More frequent servicing may be required in certain environments Home Concept model ...

Страница 28: ...cting efficiency also varies substantially It is therefore important to use filters of the same quality and capacity when you change them According to guidelines for hygienic design VDI 6022 Part 1 The supply air filter must be class ePM1 50 F7 or have a higher filtration efficiency The filters are designed for one time use If they become fouled the unit will lose capacity The filters should there...

Страница 29: ...ilters depends on the volume of air that passes through and on the molecular density of odorous substances This means that the time intervals for filter replacement can vary from unit to unit depending on operation mode and the volume of odorous substances in the air Units delivered with control equipment code MX are equipped with the filter control function FLC Filter Lifetime Control FLC indicat...

Страница 30: ...he filter xx Pa xx Pa If the filter has reached its specified final pressure drop it should be changed The final pressure drop is specified on the filter section decal filled in when the air handling unit is put into operation Also carry out a visual inspection of the filter for damage and deposits Art Nr 19121 1101_02SV FILTERDATA Nominellt luftflöde Nominal air flow Antal filter Mått Number of f...

Страница 31: ...in the 0 position 2 Wait until the fans have stopped then open the inspection door 3 Release the eccentric rails Example eccentric rails 4 Remove the old filter by pulling it towards you Discarded filters should be disposed of correctly The carbon filters are combustible in their entirety 5 Clean the filter cabinets 6 Install the new filter press in the eccentric rails to engage them and close the...

Страница 32: ...overy efficiency may be that the rotor rota tes too slowly because the drive belt is slipping The rotor speed should not be lower than 8 rpm during full energy recovery It is not usual for the rotor passages to become fouled with dust since the rotor is normally self cleaning However this might occur if the dust is of a sticky nature A reduction of the extract air flow e g due to fouling of the ex...

Страница 33: ... 5 Check that the drive belt is properly tensioned and does not slip If it slips it will have to be shortened The rotor speed should not be lower than 8 rpm during full energy recovery 6 Check that the drive belt is intact and clean 7 Check that the rotor s inlet surfaces are not covered with dust or other impurities NB Avoid touching the rotor inlet and outlet surfaces with your hands or tools 8 ...

Страница 34: ...pressure in relation to the atmospheric pressure atm e g 100 Pa Measurement outlets for P3 Downstream extract air fan EF and any trim damper generate greater negative pressure than at P2 e g 125 Pa P1 P4 P3 P2 100 25 Pa P 1 atm 101 kPa Trim damper 9 Check the differential pressure across the rotor The purging sector is factory installed set to the maximum open position Depending on the unit s pres...

Страница 35: ...djustment hole in the purging sector 5 open 4 3 2 1 closed Diff pressure between P1 and P3 Pa NO NE HY HE EX 200 200 400 400 600 600 NP NX HP 300 300 500 500 700 700 maximum open purge sector preset position from the factory Adjust the purging sector if the need arises The illustration shows the purging sector set to the maximum open position Outdoor air Supply air Direction of rotation Extract ai...

Страница 36: ...etergent designed for heat exchangers e g Re Coilex see below Compressed air at low pressure max 6 bar can be used for blowing the surfaces clean To avoid damage the nozzle should not be held any closer to the rotor than 5 10 mm A hygroscopic rotor variant can absorb particles which in some cases give off odours To prevent odours arising exercise run the hygroscopic rotor using the integrated cont...

Страница 37: ...y and increased energy use and means that the design supply air temperature cannot be obtained when the outdoor temperature is low Possible reasons for reduced recovery efficiency could be the fouling of the heat exchanging surfaces fins or that the bypass damper is not closing completely A reduction of the extract air flow e g due to fouling of the extract air filter entails reduced heat recovery...

Страница 38: ...ing DANGER Risk of serious personal injury and or damage to air handling unit Read and understand the entire chapter 1 5 General safety messages before working on servicing or inspecting the air handling unit The plate heat exchanger is designed to prevent dirt and deposits from coming into contact with the heat transfer surfaces Most of the particles in the air simply pass through the plate heat ...

Страница 39: ...nd the bypass damper must be closed When the unit is switched off all dampers must be closed When there is a risk of frost the dampers can be in different positions The defrost and bypass function is preset at the factory and any adjustments must be performed by IV Produkt Functional description frosting function BYP EXMM NP EXPP NO NP XP Under certain operating conditions frost and ice may build ...

Страница 40: ...impaired capacity if dust forms a coating on the coil surfaces Not only does this impair the heat transfer capacity of the coil it also increases the pressure drop on the air side Even if the ventilation system is fitted with high quality filters as time passes dust deposits will form on the front edges of the coil fins at the inlet side To utilise its full capacity the coils must be well vented T...

Страница 41: ...Risk of serious personal injury and or damage to air handling unit Read and understand the entire chapter 1 5 General safety messages before working on servicing or inspecting the air handling unit Bleed the heating coil and the pipework if needed Bleeder screws are on top of the coils or on the pipe connections Function DANGER Risk of serious personal injury and or damage to air handling unit Rea...

Страница 42: ...ty the coil must be well vented The pipework should be vented by opening the bleeder screws in pipe connections and or an air vessel Inspection DANGER Risk of serious personal injury and or damage to air handling unit Read and understand the entire chapter 1 5 General safety messages before working on servicing or inspecting the air handling unit Check 1 The coil fins to detect possible mechanical...

Страница 43: ...fety messages before working on servicing or inspecting the air handling unit 1 The ThermoGuard coil must be fitted with a safety valve the function of which should be checked regularly at least once a year If you see that the valve is leaking this is normally due to impurities from the pipe system that have accumulated on the valve seat In normal cases it is sufficient to carefully turn the valve...

Страница 44: ...se case the risk of fire Overheated elements may become deformed or loosen from their suspended brackets and heat the air unevenly Inspection DANGER Risk of serious personal injury and or damage to air handling unit Read and understand the entire chapter 1 5 General safety messages before working on servicing or inspecting the air handling unit Check that the elements are correctly positioned and ...

Страница 45: ...perature setting 4 Stop the air handling unit NB Do not break the circuit with the safety switch All the electric output steps should switch out i e the contactors in the OFF position Stopping the unit may be delayed approx 2 5 minutes to allow the fans to cool the heat energy stored in the air heater The electric heater is equipped with dual temperature limiters The one that resets itself automat...

Страница 46: ... passes dust deposits will form on the front edges of the coil fins at the inlet side A drip tray with drain is located under the cooling coil for collecting and removing condensation water and in some cases there is a droplet eliminator downstream of the cooling coil which prevents drops of water accompanying the air stream Inspection DANGER Risk of serious personal injury and or damage to air ha...

Страница 47: ...o Cooling coil cleaning under Documentation at ivprodukt docfactory com Bleeding NB ESET VK and MIE CL ELBC only DANGER Risk of serious personal injury and or damage to air handling unit Read and understand the entire chapter 1 5 General safety messages before working on servicing or inspecting the air handling unit Bleed the water coil and the pipework if needed Bleeder screws are on top of the c...

Страница 48: ...entilation capacity will be unsatisfactory Imbalance may also force moist air out into the building structure One reason why the fans are generating too little air flow may be that impurities have collected on the fan impeller blades If a centrifugal fan is rotating in the wrong direction the air flow will still go the right way but with a considerable reduction in capacity Therefore check the dir...

Страница 49: ...h the inspection door doors Fans mounted on rails can be pulled out if necessary Remove one end of the fan assembly s earth braid Loosen the screws position 1 and the pins screws position 2 and pull out the fan units NB For multiple fans the screws securing all plates must be loosened 2 Check that the fan impeller rotates easily rotates in the right direction is in balance and does not vibrate Als...

Страница 50: ...gs are intact and firmly fitted 8 Check that the measurement tubes are securely fitted on each measurement outlet 9 Remount the fan units 10 Check the air flows by reading the flow display on the Climatix display unit for units with control equipment code MX measuring Δp in the connections measurement outlets for flow measurement for units without control equipment code UC MK US Use the unit s air...

Страница 51: ...oiling use an environmentally friendly degreasing agent The motor is likely to overheat inside if thick layers of dirt prevent air from entering the motor to cool the stator structure 4 Vacuum clean the air handling unit so that particles will not be blown out into the duct system 5 Clean the other parts in the same way as the fan impellers Check that the inlet cones are securely mounted 6 Remount...

Страница 52: ...side and does not close completely when the unit stops the heating coil may freeze Inspection DANGER Risk of serious personal injury and or damage to air handling unit Read and understand the entire chapter 1 5 General safety messages before working on servicing or inspecting the air handling unit 1 Check the function of the damper actuator 2 Check the dampers for tightness when they are closed If...

Страница 53: ...1 Check the function of the damper actuator 2 Check the dampers for tightness when they are closed If they are not sealed adjust the damper actuator to make the damper tight 3 Check the sealing strips 4 If the damper is not working check that there are no screws penetrating the drive mechanism damper blades to interfere with damper function 5 Check the function of the drainage Cleaning DANGER Risk...

Страница 54: ...specting the air handling unit 1 Check the function of the damper actuator 2 Check the dampers for tightness when they are closed If they are not sealed adjust the damper actuator to make the damper tight 3 Check the sealing strips 4 If the damper is not working check that there are no screws penetrating the drive mechanism damper blades to interfere with damper function Cleaning DANGER Risk of se...

Страница 55: ...on servicing or inspecting the air handling unit 1 Check the function of the damper actuator 2 Check the dampers for tightness when they are closed If they are not sea led adjust the damper actuator to make the damper tight 3 Check the sealing strips 4 If the damper is not working check that there are no screws penetrating the drive mechanism damper blades to interfere with damper function Cleanin...

Страница 56: ...or damage to air handling unit Read and understand the entire chapter 1 5 General safety messages before working on servicing or inspecting the air handling unit Check that the baffle elements are intact and have clean surfaces Take action if necessary Cleaning DANGER Risk of serious personal injury and or damage to air handling unit Read and understand the entire chapter 1 5 General safety messag...

Страница 57: ... on servicing or inspecting the air handling unit 1 Check the function of the damper actuator 2 Check that damper tightens when closed If they are not sealed adjust the damper actuator to make the damper tight 3 Check the sealing strips 4 If the damper is not working check that there are no screws penetrating the drive mechanism damper blades to interfere with damper function Cleaning DANGER Risk ...

Страница 58: ... 075 88 00 Control support 46 0 47 075 89 00 styr ivprodukt se Service 46 0 47 075 89 99 service ivprodukt se Spare parts 46 0 47 075 88 00 spareparts ivprodukt com Visit us at www ivprodukt com Documentation for your unit docs ivprodukt com Technical documentation docs ivprodukt se ...

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