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Frigicoll MI2-22DT3DN18(At) Installation & Owner's Manual

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INSTALLATION &
OWNER'S MANUAL
Arc Duct
MI2-22DT3DN18(At)
MI2-28DT3DN18(At)
MI2-36DT3DN18(At)
MI2-56DT3DN18(At)
MI2-71DT3DN18(At)
Read this manual carefully before using the product, and keep it handy for future reference.
The product picture on the cover page is for reference only.
(KPDF-22 DR5.0H)
(KPDF-28 DR5.0H)
(KPDF-36 DR5.0H)
(KPDF-56 DR5.0H)
(KPDF-71 DR5.0H)

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Summary of Contents for Frigicoll MI2-22DT3DN18(At)

  • Page 1 INSTALLATION & OWNER’S MANUAL Arc Duct MI2-22DT3DN18(At) (KPDF-22 DR5.0H) MI2-28DT3DN18(At) (KPDF-28 DR5.0H) MI2-36DT3DN18(At) (KPDF-36 DR5.0H) MI2-56DT3DN18(At) (KPDF-56 DR5.0H) MI2-71DT3DN18(At) (KPDF-71 DR5.0H) Read this manual carefully before using the product, and keep it handy for future reference. The product picture on the cover page is for reference only.
  • Page 2 Preface Dear users, Thank you for purchasing and using our product. Please read this manual carefully before you install, use, maintain or troubleshoot this product so that you can familiarize yourself with the product and use it correctly. For ODUs or other IDUs, please refer to the applicable installation & owner’s manuals supplied with them.

  • Page 3: Table Of Contents

    Contents Safety Warning Warning Signs / 1 Safety Precautions / 2 Electric Safety Requirements / 3 Appendix / 3 Operation Operation Precautions / 7 Optimum Operation / 9 Symptoms That Are Not Faults / 10 Display Box (Optional) / 12 Installation Installation Precautions / 13 Installation Materials / 19...

  • Page 4: Safety Warning

    Please thoroughly read and ensure that you fully understand the safety precautions (including the signs and symbols) in this Safety Warning manual, and follow relevant instructions during use to prevent damage to health or property. Explanation of symbols displayed on the unit This symbol shows that this appliance used a flammable refrigerant.

  • Page 5: Safety Precautions

    Warning contents Ensure Proper Professional Grounding Only Prohibition signs No Flammable No Acid or Alkali No Strong No Open Materials Current Fire Materials Safety Precautions [ Danger ] During thunderstorms, disconnect the main power switch. Otherwise, lightning may damage the unit. In the event of refrigerant leakage, smoking and open flames are prohibited.

  • Page 6: Electric Safety Requirements

    Electric Safety Requirements [ Warning ] The air conditioner shall be installed according to the local wiring specifications. Wiring work must be completed by qualified electricians. All wiring work must comply with electrical safety specifications. The air conditioner must be well grounded. Specifically, the main switch of the air conditioner must have a reliable grounding cable.
  • Page 7 Ensure that the leak detection equipment being used is suitable for use with flammable refrigerants, i.e. non-sparking, adequately sealed or intrinsically safe. If any hot work is to be conducted on the refrigeration equipment or any associated parts, appropriate fire extinguishing equipment shall be available to hand.
  • Page 8 vibration from sources such as compressors or fans. When breaking into the refrigerant circuit to make repairs – or for any other purpose – conventional procedures shall be used. However, it is important that best practice is followed. Since flammability is a consideration. The following procedure shall be adhered to: •...
  • Page 9 The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery cylinder, and the relevant Waste Transfer Note arranged. Do not mix refrigerants in recovery units and especially not in cylinders. If compressors or compressor oils are to be removed, ensure that they have been evacuated to an acceptable level to make certain that flammable refrigerant does not remain within the lubricant.

  • Page 10: Operation

    Operation Operation Precautions [ Warning ] If the unit will be not used for a long time, disconnect the main power switch. Otherwise, an accident may occur. The installation height of the air conditioner shall be at least 2.5m above the ground to avoid the following risks: 1.
  • Page 11 Disposal: Do not dispose of this product as unsorted municipal waste. Collection of such waste separately for special treatment is necessary. Do not dispose of electrical appliances as unsorted municipal waste, use separate collection facilities. Contact your local government for information regarding the collection systems available. If electrical appliances are disposed of in landfills or dumps, hazardous substances can leak into the groundwater and get into the food chain, damaging your health and well-being.

  • Page 12: Optimum Operation

    Optimum Operation As cold air sinks and hot air rises, adjust the direction of louvers respectively in cooling and heating modes to ensure good cooling and heating effects. In Cooling Mode To improve the cooling effect in the entire room, adjust the louvers of the air outlet grille horizontally. [ Caution ] Cooling in the downward outlet state may cause condensation on the air outlet and guide louver surface.

  • Page 13: Symptoms That Are Not Faults

    Operating Range To maintain good performance, operate the air conditioner under the following temperature conditions: Indoor 16~32°C temperature ≤80% Cooling Indoor (When the humidity exceeds 80%, long-time operation of the IDU may cause dew humidity condensation on the surface of the IDU or generate mist-like cold air from the air outlet.) Indoor Heating 15~30°C...
  • Page 14 Normal Phenomena that Are Not Air Conditioner Faults The following phenomena are normal during operation of the air conditioner. They can be solved according to the instructions below or do not need to be solved. ■ The IDU emits white mist ① In an environment where the indoor relative humidity is too high, when the IDU runs in cooling mode, white mist may appear due to the humidity and the temperature difference between the air inlet and outlet.

  • Page 15: Display Box (Optional)

    ② When the heat pump runs in heating mode, the ODU blows out cold air, causing the outdoor temperature to drop. When the outdoor temperature is extremely low, it becomes increasingly difficult for the air conditioner to absorb heat outdoors, so the heating capability of the air conditioner drops gradually.

  • Page 16: Installation

    Installation Carefully read this manual before installing the IDU. Installation Precautions Qualification and Safety Regulation Requirements [ Warning ] Carry out the installation according to local standards. Ask your local dealer or professionals to install the product. This unit must be installed by professional technicians with relevant specialized knowledge. Users MAY NOT install the unit themselves;...
  • Page 17 Before and after installation, exposing the unit to water or moisture will cause electrical short circuit. Do not store the unitin a humid basement or expose it to rain or water. Make sure the installation base and lifting are robust and reliable; Insecure installation of the base may cause the air conditioner to fall, leading to an accident.
  • Page 18 Precautions for Carrying and Lifting the Air Conditioner ① Before carrying the air conditioner, determine the route that will be used to move it to the installation site. ② Do not unseal the air conditioner until it is moved to the installation site. When unpacking and moving the air conditioner, you must hold the hanger seat and do not apply force to ③...
  • Page 19 Keep the air-conditioning return air away from direct exposure to the sun in the room. Be careful not to interfere with the light tank, fire pipe, gas pipe and other facilities. The IDU should not be installed in the places which affect the structural integrity of the building, such as on load-bearing beams and columns.
  • Page 20 Part Description * To be purchased separately on site. 3 *Soft flexible hose 2 *Air outlet pipe 1 *Air outlet grille Drainage pipes for models 5 Liquid pipe 4 Gas pipe without a water pump Drainage pipes for models 8 Display box (optional) 9 *Connection wire with a water pump 11 Remote controller (optional)
  • Page 21 Product Dimensions (Unit: mm) External dimension, air outlet size, and size of fresh air outlet 2-Φ5 Φ5 Size of return air inlet (bottom return air mode), Size of return air inlet (back return air mode): and the distance between the lugs: Dimension of pipe and water pipe: 14mm 14 13...

  • Page 22: Installation Materials

    Model (kW) kW≤2.8 109.5 7/16-20 3/4-16 2.8<kW≤3.6 109.5 3.6<kW≤5.6 109.5 5.6<kW≤7.1 1100 1019 109.5 1145 1005 5/8-18 7/8-14 7.1<kW≤11.2 1600 1400 1519 159.5 1645 1505 Installation Materials Accessories List of accessories Installation &  Drainage pipe X 1 Insulation piping X 2 Brass nut X 2 Cable tie X 4 Owner's...
  • Page 23 PVC water discharge pipe Thermal insulation pipe The thickness of the insulation pipe for the copper pipe is This is used as the IDU's usually 15mm or above; and the d r a i n a g e p i p e , 2 5 m m i n thickness of the insulation pipe external diameter.

  • Page 24: Preparations Before Installation

    Preparations Before Installation Unpacking Check ① Before installation, check whether the packing materials are in good condition, whether the accessories that come with the product are complete, The red dot bulges whether the air conditioner is intact, and whether the surfaces of the heat Sealing exchanger and other parts are worn.

  • Page 25: Idu Installation

    Install back cover plate assembly Remove the back cover plate assembly Back cover plate assembly Back cover plate assembly IDU Installation [ Warning ] Install the air conditioner in a location with sufficient strength to support the weight of the unit. Take reinforcement measures when necessary.
  • Page 26 Installation of Lifting Bolts Refer to the following table on installation using the lifting bolts. Sites with concrete slabs With steel frame Use embedded bolts and pull bolts Directly set and use an angle iron for support. Lifting bolts Angle iron Lifting bolts for support IDU Installation...
  • Page 27 Use a transparent hose to observe water level (principle of communicating vessels) Drain side Tilt by 1/100 and verify the tilt angle of the unit body in the length direction, ensuring a downward slope of 1/100 towards the drainage side. Do not tilt it towards the non-drainage side.

  • Page 28: Refrigerant Connecting Piping Installation

    If the air outlet panel is far away from the unit body and Metallic air diffuser needs to be connected to the outlet air flange through a metal air duct, make sure to attach a sponge to the You need to add metal contact surface to guarantee insulation.
  • Page 29 Pipe Connection Steps Measure the required length of the connecting pipe. Make the connecting pipe using the following method (see “Pipe Connection” for details). Connect the IDU first, then connect the ODU. Apply refrigerant oil to the outer surface Before tightening the flare nut, apply refrigeration of the pipe socket.
  • Page 30 [ Caution ] When it is necessary to fill the piping with nitrogen during welding, the pressure must be kept at 0.02MPa using a pressure relief valve. Do not use flux when soldering the refrigerant connection piping. Use a phosphor copper solder that does not require flux.
  • Page 31 The protective nut is a one-time part, it can not be reused. In case it is removed, it should be replaced with a new one.(For IEC 60335-2-40: 2018 only) Handle Yoke Cone Copper pipe Clamp handle Red arrow mark Protective nut Indoor unit tubing Flare nut Pipings...
  • Page 32 Vacuum Pumping (Connect the refrigerant piping to the gas and liquid pipes of the ODU, and Check valve use a vacuum pump to evacuate the gas and liquid pipes of the ODU at the same time. Do not use the refrigerant High pressure gauge enclosed in the ODU for Pump valve...

  • Page 33: Drainage Pipe Installation

    Drainage Pipe Installation [ Caution ] Before installation of the condensate pipeline, determine its direction and elevation to avoid intersection with other pipelines to ensure that the slope is smooth and straight. The highest point of the drainage pipe should be equipped with a discharge port to ensure the smooth discharge of condensate water, and the discharge port must face downwards to prevent dirt from entering the pipe.
  • Page 34 The water pump connecting pipe and drainage pipe (in the indoor part) must be wrapped with heat insulation pipe evenly and bound with cable ties to prevent air from entering and producing condensate. Cable tie Drainage pipe Thermal insulation pipe To prevent water from flowing back into the air conditioner when it stops running, the drainage pipe should be inclined downward to the outdoor side (drainage side), with a downward slope of 1/100 or above.
  • Page 35 • Method to discharge water with the drain pump: (Unit: mm) Air outlet <200 Slope > 1/100 The net height of 800~1000 the drainage pipe ≤ 1200 How to connect the drainage pipe for the drain pump of a single unit <200 <200 Air outlet...
  • Page 36 Air outlet Height difference as large as possible (about 100) Slope > 1/100 Drainage pipes from multiple units are connected to the main drainage pipe to be discharged through the sewage pipe. Water Discharge Test Before the test, make sure that the water discharge pipeline is smooth, and check that each connection is properly sealed.

  • Page 37: Air Duct Installation

    Air Duct Installation Please use locally purchased air ducts and soft air ducts (Use environmentally friendly, odorless materials, otherwise the air conditioner may generate odor when it runs). Install the flange at the air return side, and use aluminum foil tape to seal the connection part between the flange and the air duct to avoid air leakage.

  • Page 38: Electrical Connection

    Connection between air vent and air duct wrong Air vent size and position wrong Connection Air vent between air size vent and air wrong duct wrong Air outlet Air outlet Return air inlet not opened Air vent position wrong Return air inlet Air vent size and position correct Air vent size...
  • Page 39 [ Caution ] Avoid bonding and connecting the communication line. If doing so is unavoidable, at the very least, ensure a reliable connection by crimping or soldering and make sure the copper wire at the connection is not exposed; otherwise, communication failure may occur. The power cable and communication line must be routed separately, with a distance of over 5 cm.
  • Page 40 Schematic diagram of the main terminal blocks of main control board CN30 Terminals of display box CN22 ALARM N AC2 Terminals of alarm CN18 signal output, terminals Terminals of function of strong current module adapter board sterilization module CN10 CN55 X1 X2 P Q E D1 D2 M1 M2...
  • Page 41 [ Caution ] The strong and weak current wires must be separated. Alarm signal output, strong current sterilization, remote switch, and function expansion board are custom or optional. Power cable connection ① Connection between the power cable and power Main control board supply terminal The power supply terminal of the IDU is fixed on the main control board, and the power cable is connected to the power...
  • Page 42 ② P ower cable system connection Power cable system connection depends on the forms of communication between the IDU and ODU. For the HyperLink communication form with independent power supply, IDUs are allowed to have independent power supply. For other communication forms, IDUs should be provided with uniform power supply. IDUs are provided with independent power supplies*, which are wired as follows: For HyperLink communication with independent power supply: Master ODU...
  • Page 43 IDUs are provided with uniform power supply*, which are wired as follows: 1. HyperLink communication with the uniform power supply: Power supply for IDU L1+La+Ln ≤ 2000m Wire diameter: 0.75mm × × × × Communication wire Circuit breaker Power cable Distribution box Distribution box Master ODU...
  • Page 44 [ Caution ] When the IDUs are provided with a uniform power supply, if the IDUs in the same refrigerant system are V8/ S8 IDUs, then IDUs and ODU can communicate either via HyperLink with a uniform power supply, or via P/Q.
  • Page 45 ② T able of selection of communication line diameter One controller to Communication one indoor unit for one controller Function IDU and ODU communication (two controllers to multiple indoor to one IDU) units (centralized communication control) HyperLink HyperLink P/Q communication P/Q/E communication communication communication...
  • Page 46 ③ I DU and ODU communication HyperLink communication (function of EEV control upon power-off is available) Single unit: HyperLink communication is a new type of IDU and ODU communication technology. When the  IDUs  are  provided  with  independent  power  supplies,  use  2×1.5mm communication cables to realize the function of EEV control upon power-off.
  • Page 47 L1+La+Lx ≤ 200m    L11+Lb+Ly ≤ 200m    L21+Lc+L30 ≤ 200m For other connection methods (tree topology, star topology, ring topology), please refer to the technical manual or consult technical personnel. [ Caution ] If the total distance is ≤ 200m and the total number of IDUs is ≤ 10 sets, the valve is powered and controlled  by the master ODU. If the total distance is longer than 200m or the total number of IDUs is more than 10 sets, a repeater is required to increase the bus voltage.
  • Page 48 System: The HyperLink communication line with a uniform power supply between IDU and ODU can reach a length of up to 2000 meters, supporting any topology connection. The following figure shows a serial connection: Power supply for IDU Communication wire ×...
  • Page 49 System: The maximum total length of the P/Q communication cable of the IDU and ODU can be up to 1200m, and can be connected in serial, as shown in the figure below: Power supply for IDU × × × × Communication wire Circuit breaker Power cable...
  • Page 50 [ Caution ] When P/Q or P/Q/E communication is used, the IDUs need to be powered uniformly. P/Q or P/Q/E communication and HyperLink communication cannot be configured at the same time. To achieve the function of EEV control upon power-off, you must chooseHyperLink communication. Use only shielded cables for P/Q or P/Q/E communication.
  • Page 51 ⑤ D 1D2 communication line connection (limited to ODU and system configuration) Achieving one-to-multiple and two-to-multiple functions of the IDU wired controller through D1D2 communication (a maximum of 16 sets) D1D2 communication is 485 communication. The one-to-more and two-to-more functions of the IDU wired controller can be achieved through D1D2 communication, as shown in the figure below: IDU 2# IDU 16#...
  • Page 52 External board connection (limited to ODU and system configuration) The external board is a connection module outside the main control board, including a display box, function module adapter board, and optional function expansion boards 1 and 2. ① Connection of Display Box The display box is connected to the main control board through a 4-core cable, and is connected to the “CN30”...
  • Page 53 Reclose the electric control box cover Straighten out the connecting wires and lay them flat, and close the electric control box cover again. [ Caution ] Do not cover the electric control box during power-on. When covering the electric control box, arrange the cables carefully and do not clip the connecting wires on the electric control box cover.

  • Page 54: Application Control

    Application Control Error Codes and Definitions In the following circumstances (warning failures excluded), please stop the air conditioner immediately, cut off the power switch and contact the local air conditioner customer service center. The error code is displayed on the display box and the wired controller display. Error Error code Digital display Emergency stop...
  • Page 55 Error Error code Digital display Abnormal communication between the IDU main control board and fan drive board Abnormal communication between the IDU and wired controller Abnormal communication between the IDU and Wi-Fi Kit Abnormal communication between the IDU main control board and display board Abnormal communication between the AHU Kit slave unit and master unit Number of AHU Kits is not the same as the set number...
  • Page 56 Error Error code Digital display Tph (pre-heated fresh air temperature sensor) short-circuits or cuts off TA (outlet air temperature sensor) short-circuits or cuts off Outlet air humidity sensor fault Return air humidity sensor fault Upper wet bulb sensor fault Lower wet bulb sensor fault R32 refrigerant leakage sensor fault T2A (heat exchanger inlet temperature sensor) short-circuits or cuts off T2 (heat exchanger middle temperature sensor) short-circuits or cuts off...
  • Page 57 Error Error code Digital display Motor blocking protection Speed control mode setting error Phase lack protection of motor Operating Status Codes and Definitions (Non-Error) Definition Code Digital display Oil return or preheating operation Self-cleaning Mode conflict (V8/S8 communication protocol adopted) Defrosting Static pressure detection Remote shutdown...
  • Page 58 Spot Check Description Use the bi-directional communication wired controller (for example, WDC3-86S) to activate the spot check function in the following steps: Check No. ① On the main page, hold " "  and  "▲"  for  2s  to  enter the query page. The wired controller Spot check displays “CC”. Press the "▲" or "▼" key to select ...
  • Page 59   ESP Setting   Use the bi-directional communication wired controller (for example, WDC3-86S) to set the unit external static pressure, which can be divided into the following two situations: Constant Air Flow Mode IDUs that are equipped with a constant air flow function are set to the constant air flow mode when they leave the factory.
  • Page 60 2.8kW 3.6kW 70.0 70.0 60.0 60.0 50.0 50.0 40.0 40.0 30.0 30.0 20.0 20.0 10.0 10.0 260 280 300 320 340 360 380 400 420 440 460 480 240 300 340 380 420 460 500 540 580 620 Air flow rate (m Air flow rate (m 4.5kW 5.6kW...
  • Page 61 Constant Speed mode The bi-directional communication wired controller must be used to set the unit's external static pressure parameters to overcome the air outlet resistance. The steps are as follows: ① On the main page, hold " " and " " for 3s. The wired controller displays "CC". Press the "▲" or "▼" ...
  • Page 62 2.2kW 1.5kW 70.0 70.0 ESP*1: 50Pa ESP*1: 50Pa ESP*2: 30Pa ESP*2: 30Pa 60.0 60.0 ESP*3: 10Pa ESP*3: 10Pa 50.0 50.0 40.0 40.0 30.0 30.0 20.0 20.0 10.0 10.0 240 260 280 300 320 340 360 380 400 420 440 220 240 260 280 300 320 340 360 380 400 420 Air flow rate (m Air flow rate (m 2.8kW...
  • Page 63 Switch between Constant Air Flow and Constant Speed The two operating modes are switched as follows: ① On the main page, hold " " and " " for 3s. The wired controller displays "CC". Press the "▲" or "▼"  key to select the IDU address n00-n63 (indicating the address of a specific IDU), and press the " " key to enter the parameter setting page.

  • Page 64: Test Run

    Parameter code Parameter name Parameter range Default value Remarks Constant air 00: Constant speed; 00/01 flow setting 01: Constant air flow [ Caution ] Parameters can be set while the unit is powered on or powered off. On the parameter setting page, the wired controller does not respond to a remote signal, and does not respond to the app remote control signal.
  • Page 65 There are no vibrations or strange sounds during operation. The fan, noise and condensation do not affect the neighbors. There is no refrigerant leakage. Inspection After Installation To ensure a comfortable indoor environment, please run down through the list to check whether the installation of the air conditioner meets the requirements. Insert a "×" for Fail and a "√" for Pass.

  • Page 66: Cleaning, Maintenance And After-Sales Service

    Cleaning, Maintenance and After-Sales Service Safety Warning [ Warning ] For safety reasons, always turn off the air conditioner and turn off the power before cleaning the air conditioner. Do not disassemble or repair the air conditioner by yourself; otherwise, it may cause fire or other hazards. Only professional service personnel can carry out the maintenance.
  • Page 67 Procedure diagram Open the air inlet grille. For duct type air conditioners, open the air inlet grille as shown in the figure. Remove the filter. [ Note ] Only professionals can change and disassemble the filter. Any improper operations may cause electric shock or injuries due to touching rotating parts.
  • Page 68 Cleaning Air Outlets and Exterior Panels ① Wipe the air outlet and panel with a dry cloth. ② If a stain is hard to remove, clean it with clean water or neutral detergent. [ Caution ] Do not use gasoline, benzene, volatile agents, decontamination powder or liquid insecticides. Otherwise, the air outlet or panel may become discolored or deformed.

  • Page 69: Maintenance Of Conventional Parts

    Maintenance of Conventional Parts Maintenance of the Heat Exchanger and Drain Pan The drain pan must first be removed during the maintenance of the internal unit assembly. Dismantle the drain pan according to the following schematic to prevent water leakage in the unit (Make sure there is no residual water in the drain pan before you dismantle it).
  • Page 70 Slanting downward, remove the lower propeller Loosen the screws on the upper propeller housing. housing. Move the upper propeller housing 50mm Make the propeller housing rotate more than 90° backward. downward along the wind wheel. Slanting downward, remove the lower propeller Loosen the fastening screws for the motor sealing housing.
  • Page 71 Maintenance of Drain Pump Remove the screws on the water pump cover and pipe clamp board, and then remove the pipe clamp board, as shown in Figure A. Unplug the pump and water level switch power supply. Replace the drain pump assembly. Maintenance of Electronic Expansion Pipe clamp Valve And Temperature Sensor...
  • Page 72 Push the coupling toward the wind wheel. Remove the wind wheel, connecting shaft and coupling together. Loosen the fastening screws for the wind wheel and remove the coupling and motor shaft. Maintenance of the Bearing Block (model with 3 or 4 fans) Remove the two screws below the return air Refer to the maintenance procedure of the cover.

  • Page 73: Attached Page

    Attached Page ErP Information Fan Types Centrifugal fan ErP Directive 2009/125/EC Directive (or Standard) for Regulation COMMISSION REGULATION (EU) No 327/2011 Model Name ZKSN-60-8-3+LX-142*200*15-42JS Rev. Prepare by Specified Information of Fan: Information Item Comment ηtarget = 32.1% Overall efficiency (ηe) = 32.7% Pass or not  (Criteria: ηe ≥ηtarget ) Pass Measurement category (A-D) Efficiency category (static or total) Static...
  • Page 74 ErP Information Fan Types Centrifugal fan ErP Directive 2009/125/EC Directive (or Standard) for Regulation COMMISSION REGULATION (EU) No 327/2011 Model Name ZKSN-60-8-3+LX-142*200*15-42JS Rev. Prepare by Specified Information of Fan: Information Item Comment ηtarget = 32.2% Overall efficiency (ηe) = 34.2% Pass or not  (Criteria: ηe ≥ηtarget ) Pass Measurement category (A-D) Efficiency category (static or total) Static Efficiency grade at optimum energy efficiency point...

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