Midea MGA-D10/N1 Manual
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Midea MGA-D10/N1 Manual

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MCAC-UTSM-2008-11
Contents
Part 1 General Information ..................................................................................................... 1
Part 2 Outdoor Unit ................................................................................................................. 4
Part 3 Installation .................................................................................................................. 45
※The specifications, designs, and information in this book are subject to change without notice for
product improvement.
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  • Page 1 MCAC-UTSM-2008-11 Contents Part 1 General Information ..................... 1 Part 2 Outdoor Unit ......................... 4 Part 3 Installation ........................45 ※The specifications, designs, and information in this book are subject to change without notice for product improvement. Contents...
  • Page 2 MCAC-UTSM-2008-11 General Information Part 1 General Information 1. Model Names of Outdoor Units........2 2. External Appearance ..........2 3. Nomenclature ............. 3 4. Features ..............3 General Information...

  • Page 3: Model Names Of Outdoor Units

    Model Names of Outdoor Units MCAC-UTSM-2008-11 1. Model Names of Outdoor Units Model Refrigerant Capacity (kW) Power Supply (V-ph-Hz) MGA-D10/N1 R410A 220-240, 1, 50 MGA-D12/N1 R410A 220-240, 1, 50 MGA-D14/SN1 R410A 380-415, 3, 50 MGA-D16/SN1 R410A 380-415, 3, 50 2. External Appearance 2.1 Outdoor Unit...

  • Page 4: Nomenclature

    S: 380-415V, 50Hz, 3ph --: 220-240V, 50Hz, 1ph Capacity(14kW) D: Digital Scroll Type Midea Chiller 4. Features 1. R410A environment friendly refrigerant. 2. Energy saving and reliable: Adopting Copeland digital scroll compressor, which can adjust the capacity output and satisfy the capacity demands in different working conditions.

  • Page 5: Table Of Contents

    Outdoor Unit MCAC-UTSM-2008-11 Part 2 Outdoor Unit 1. Specifications ............. 5 2. Dimensions ..............7 3. Service Space ............. 8 4. Piping Diagram ............9 5. Wiring Diagrams ............10 6. Electric Characteristics ..........12 7. Capacity Tables ............12 8.

  • Page 6: Specifications

    MCAC-UTSM-2008-11 Specifications 1. Specifications Model MGA-D10/N1 MGA-D12/N1 Code 220090400050 220090400030 Power supply V-Ph-Hz 220-240, 1, 50 220-240, 1, 50 Capacity Cooling Input 3912 3978 Capacity 13.6 14.3 Heating Input 4216 4164 Max. input consumption 5430 5615 Max. input current 27.4 28.2...
  • Page 7 Specifications MCAC-UTSM-2008-11 Model MGA-D14/SN1 MGA-D16/SN1 Code 220090400020 220090400040 Power supply V-Ph-Hz 380-415, 3, 50 380-415, 3, 50 Capacity Cooling Input 4453 4904 Capacity Heating Input 4828 4943 Max. input consumption 6533 6573 Max. input current 11.7 11.5 Starting current Model ZPD72KCE-TFD-532 ZPD72KCE-TFD-532 Type...

  • Page 8: Dimensions

    MCAC-UTSM-2008-11 Dimensions 2. Dimensions 2.1 Outdoor Unit Unit: mm Dimensions MGA-D10/N1 MGA-D12/N1 1250 MGA-D14/SN1 1250 MGA-D16/SN1 1250 2.2 Water Pump Box Outdoor Unit...

  • Page 9: Service Space

    Service Space MCAC-UTSM-2008-11 3. Service Space Outdoor Unit...

  • Page 10: Piping Diagram

    MCAC-UTSM-2008-11 Piping Diagram 4. Piping Diagram Remark: Name Name Name Compressor Capillary Liquid receiver High pressure switch Liquid receiver Low pressure switch 4 -way valve Plate heat exchanger Crank heater Condenser PWM valve Filter Water temperature sensor Outdoor Unit...

  • Page 11: Wiring Diagrams

    Wiring Diagrams MCAC-UTSM-2008-11 5. Wiring Diagrams 5.1 MGA-D10/N1 Outdoor Unit...
  • Page 12 MCAC-UTSM-2008-11 Wiring Diagrams 5.2 MGA-D12/N1 5.3 MGA-D14/SN1 MGA-D16/SN1 Outdoor Unit...

  • Page 13: Electric Characteristics

    (1) Outside air temperature 35℃-Water temperature at evaporator 12/7℃ (2) Values refer to the lower rated voltage(50Hz). These values are used to judge the protection switch size and the thickness of the power supply cable. 7. Capacity Tables 7.1 Cooling capacity Model MGA-D10/N1 (°C) (°C) (kW) 10.9 11.2 11.5...
  • Page 14 MCAC-UTSM-2008-11 Capacity Tables Model MGA-D12/N1 (°C) (°C) (kW) 12.4 12.7 13.0 13.3 13.6 13.9 (kW) (kW) △Pev (kPa) 46.6 47.8 49.6 51.8 54.6 60.0 (kW) 11.9 12.2 12.5 12.8 13.1 13.4 (kW) (kW) △Pev (kPa) 37.0 37.1 40.6 43.2 46.1 48.0 (kW) 11.4...
  • Page 15 Capacity Tables MCAC-UTSM-2008-11 Model MGA-D14/SN1 Ta. (°C) Tw (°C) Pf (kW) 14.8 15.1 15.4 15.7 16.1 16.4 Pa (kW) Pat (kW) Qev (m △Pev (kPa) 49.3 50.0 51.7 53.0 56.1 57.8 Pf (kW) 14.1 14.4 14.7 15.0 15.3 15.6 Pa (kW) Pat (kW) Qev (m △Pev (kPa)
  • Page 16 MCAC-UTSM-2008-11 Capacity Tables Model MGA-D16/SN1 (°C) (°C) (kW) 15.5 15.7 16.0 16.3 16.5 16.8 (kW) (kW) △Pev (kPa) 54.9 57.6 59.4 62.1 65.2 67.7 (kW) 14.9 15.2 15.5 15.8 16.1 16.4 (kW) (kW) △Pev (kPa) 51.0 52.9 50.9 54.7 59.9 63.0 (kW) 14.4...
  • Page 17 Capacity Tables MCAC-UTSM-2008-11 7.2 Heating capacity Model MGA-D10/N1 Ta. U.R.87% (°C) Tw (°C) — Pt (kW) — Pa (kW) — Pat (kW) — Qc (m — △ Pc (kPa) 29.4 28.4 27.0 Pt (kW) Pa (kW) Pat (kW) Qc (m △...
  • Page 18 MCAC-UTSM-2008-11 Capacity Tables Model MGA-D12/N1 (°C) (°C) Ta. U.R.87% — Pt (kW) 11.0 10.9 10.8 — Pa (kW) — Pat (kW) — Qc (m — △ Pc (kPa) 41.6 41.0 40.3 Pt (kW) 12.2 12.1 12.0 11.9 Pa (kW) Pat (kW) Qc (m △...
  • Page 19 Capacity Tables MCAC-UTSM-2008-11 Model MGA-D14/SN1 (°C) (°C) Ta. U.R.87% — Pt (kW) 10.4 10.5 10.6 — Pa (kW) — Pat (kW) — Qc (m — △ Pc (kPa) 25.8 27.2 27.0 Pt (kW) 13.1 13.0 13.0 12.9 Pa (kW) Pat (kW) Qc (m △...
  • Page 20 MCAC-UTSM-2008-11 Capacity Tables Model MGA-D16/SN1 (°C) (°C) Ta. U.R.87% — Pt (kW) 11.5 11.4 11.3 — Pa (kW) — Pat (kW) — Qc (m — △ Pc (kPa) 25.0 25.0 24.8 Pt (kW) 14.2 14.1 14.0 13.9 Pa (kW) Pat (kW) Qc (m △...

  • Page 21: Operation Limits

    Operation Limits MCAC-UTSM-2008-11 8. Operation Limits Outdoor temperature: 10℃～43℃ Cooling operation Water temperature: 4℃-20℃ ℃ Outdoor temperature: 4℃～24℃ (-15℃～24 , when charge enough antifreeze) Heating operation Water temperature: 30℃-50℃ 8.1 Ethylene Glycol Solutions Water and ethylene glycol solutions used as a thermal vector in the place of water reduce the performance of the unit.

  • Page 22: Hydraulic Performance

    MCAC-UTSM-2008-11 Hydraulic Performance 8.3 Quantity of Water in Installation Model MGA-D10/N1 MGA-D12/N1 MGA-D14/SN1 MGA-D16/SN1 Minimum water volume (L) If the total water volume in the system is less than the value in the table above, the additional water tank is necessary in order to avoid the compressor On/Off frequency.

  • Page 23: Sound Levels

    Sound Levels MCAC-UTSM-2008-11 10. Sound Levels 10kW 12/14/16kW Microphone 1.0m Note: H= 0.5 × height of outdoor unit Note: The point A is in the middle of the whole outdoor panel. Model Noise level dB(A) MGA-D10/N1 MGA-D12/N1 MGA-D14/SN1 MGA-D16/SN1 Outdoor Unit...

  • Page 24: Exploded View

    MCAC-UTSM-2008-11 Exploded View 11. Exploded View 11.1 MGA-D10/N1 Matched water pump box- CE-SBX/N1-01 Outdoor Unit...
  • Page 25 Exploded View MCAC-UTSM-2008-11 MGA-D10/N1 Part Name Quantity Part Name Quantity Top cover ass'y 7.25 Wire joint Rear Supporter 7.26 Compressor capacitor Condenser ass'y 7.27 Wire clamp High pressure valve ass'y Separator Low pressure valve Big handle Partition board ass'y Front right clapboard ass'y...
  • Page 26 MCAC-UTSM-2008-11 Exploded View 11.2 MGA-D12/N1 Matched water pump box- CE-SBX/N1-01A Outdoor Unit...
  • Page 27 Exploded View MCAC-UTSM-2008-11 MGA-D12/N1 Part Name Quantity Part Name Quantity Top cover ass'y 4-way valve ass'y Accumulator cylinder 11.1 4-way valve Condenser ass'y 11.2 4-Ways valve solenoid Valve plate 11.3 Low pressure valve Front clapboard ass'y Compressor E-part box ass'y Base AC contactor Compressor electric heater...
  • Page 28 MCAC-UTSM-2008-11 Exploded View 11.3 MGA-D14/SN1 Matched water pump box- CE-SBX/SN1-01 Outdoor Unit...
  • Page 29 Exploded View MCAC-UTSM-2008-11 MGA-D14/SN1 Part Name Quantity Part Name Quantity Top cover ass'y 11.1 4-way valve Accumulator cylinder 11.2 4-Ways valve solenoid Condenser ass'y 11.3 Low pressure valve Valve plate Compressor Front clapboard ass'y Base E-part box ass'y Compressor electric heater AC contactor Discharge pipe ass'y Surge suppresser...
  • Page 30 MCAC-UTSM-2008-11 Exploded View 11.4 MGA-D16/SN1 Matched water pump box- CE-SBX/SN1-01A Outdoor Unit...
  • Page 31 Exploded View MCAC-UTSM-2008-11 Part Name Quantity Part Name Quantity Top cover ass'y 11.1 4-way valve Accumulator cylinder 11.2 4-Ways valve solenoid Condenser ass'y 11.3 Low pressure valve Valve plate Compressor Front clapboard ass'y Base E-part box ass'y Compressor electric heater AC contactor Discharge pipe ass'y Surge suppresser...

  • Page 32: Troubleshooting

    MCAC-UTSM-2008-11 Troubleshooting 12. Troubleshooting 12.1 Troubles Cause and Solution Troubles Causes Solution 1. Voltage is out of operation Check wiring and circuit range. Water pump doesn’t work 2. Water flow in the water pump Check whether the water system is blocked with box is abnormal sundries.
  • Page 33 Troubleshooting MCAC-UTSM-2008-11 E0: Water flow test malfunction LED indicates E0 Check the water pump, and repair or replace it Judge 1: The water pump gets faulty. if necessary. Check the water flow switch, and repair or Judge 2: Water flow switch gets faulty. replace it if necessary.
  • Page 34 MCAC-UTSM-2008-11 Troubleshooting E1: Phase sequence malfunction LED indicates E1 Judge 1: Check whether the phase order of 3-phase Swap the power lines of any two phases. power supply is incorrect Judge 2: Check whether the 3-phase power supply is Check the power supply and power cable lack of phase E2: In-outdoor unit communication checking channel is abnormal LED indicates E2...
  • Page 35 Troubleshooting MCAC-UTSM-2008-11 E3: Backwater temperature sensor checking channel is abnormal LED indicates E3 Judge 1: Check whether the wiring of backwater temperature sensor is break off Connect the wiring well Judge 2: Check whether the backwater temperature sensor is broken: see whether the resistance of Replace the backwater temperature sensor backwater temperature sensor is wrong refer to the Annex 1...
  • Page 36 MCAC-UTSM-2008-11 Troubleshooting E5: Outlet water temperature sensor checking channel is abnormal LED indicates E5 Judge 1: Check whether the wiring of outlet water temperature sensor is break off Connect the wiring well Judge 2: Check whether the outlet water temperature Replace the outlet water temperature sensor sensor is broken: see whether the resistance of outlet water temperature sensor is wrong refer to the...
  • Page 37 Troubleshooting MCAC-UTSM-2008-11 E7: Plate heat exchanger temperature sensor 1 checking channel is abnormal LED indicates E7 Judge 1: Check whether the wiring of plate heat exchanger temperature sensor 1 is break off Connect the wiring well Judge 2: Check whether the plate heat exchanger temperature sensor 1 is broken: see whether the Replace the plate heat exchanger resistance of plate heat exchanger temperature...
  • Page 38 MCAC-UTSM-2008-11 Troubleshooting E9: Digital scroll compressor discharge temperature sensor is abnormal (thermostat display E4) LED indicates E9 Judge 1: Check whether air outlet is blocked by Clear the sundries to ensure smooth air sundries. exhaust. Judge 2: Check whether the condenser coil fin Clean the condenser.
  • Page 39 Troubleshooting MCAC-UTSM-2008-11 P0: Current protection LED indicates P0 Check the compressor, and repair or replace it Judge 1: Check whether the compressor motor gets if necessary. faulty. Reduce the refrigerant Judge 2: Check whether the refrigerant is charged too much (the high pressure> 3.8MPa) Judge 3: Check whether air outlet is blocked by Clear the sundries to ensure smooth air sundries.
  • Page 40 MCAC-UTSM-2008-11 Troubleshooting P1: High pressure protection LED indicates P1 High pressure protection Judge 1: Whether the wiring between the high Connect it well pressure switch and main control board is connected well and correctly Judge 2: Whether the high pressure switch is broken Validate: Short connect the high pressure switch Replace high pressure switch socket, check whether the system can run normally...
  • Page 41 Troubleshooting MCAC-UTSM-2008-11 P2: Low pressure protection LED indicates P2 Low pressure protection Judge 1: The wiring between the low pressure switch and main control board is connected well or correctly Connect it well Judge 2: Whether the low pressure switch is broken Validate: Short connect the low pressure switch Replace low pressure switch socket, check whether the system can run normally...
  • Page 42 MCAC-UTSM-2008-11 Troubleshooting P3: Discharge air temperature protection Refer to the E9 to solve the problem P4: Inlet–outlet water temperature difference protection LED indicates P4 Replace the temperature-sensitive kits Judge 1: Check whether inlet–outlet water temperature-sensitive kits gets faulty. Fix it well Judge 2: Check whether the sequence of the four temperature-sensitive kits in the water pump is wrong connected.
  • Page 43 Troubleshooting MCAC-UTSM-2008-11 P6: Plate heat exchanger low temperature protection LED indicates P6 Replace the temperature-sensitive kit Judge 1: Check whether the temperature-sensitive kit at the plate heat exchanger side gets faulty Clean the water side heat exchanger or pipe Judge 2: The heat exchange of water side is insufficient Refill water periodically Judge 3: Check whether the circulation water is...
  • Page 44 MCAC-UTSM-2008-11 Troubleshooting Pb: System anti-frozen protection LED indicates Pb Judge 1: Check whether the circulation water is Check the water system and make insufficient: adjustment. (Q<0.6×Q rated Judge 2: Check whether the plate heat exchanger Replace the temperature sensor. temperature sensor is abnormal Judge 4: Check whether the ambient temperature is Adjust outdoor fan and increase the outdoor too low (in cooling mode).
  • Page 45 Troubleshooting MCAC-UTSM-2008-11 Annex 1 Unit： ℃--K Room temperature sensor \Pipe temperature sensor Table 115.266 12.6431 2.35774 0.62973 108.146 12.0561 2.27249 0.61148 101.517 11.5 2.19073 0.59386 96.3423 10.9731 2.11241 0.57683 89.5865 10.4736 2.03732 0.56038 84.219 1.96532 0.54448 79.311 9.55074 1.89627 0.52912 74.536 9.12445 1.83003...
  • Page 46 MCAC-UTSM-2008-11 Installation Part 3 Installation 1. General Information ..........46 2. Description of Standard Unit ........47 3. Installation ............... 49 4. Hydraulic Connection ..........54 5. Electrical Connection ..........56 6. Auxiliary Electric Heater Installation ...... 58 7. Maintenance............. 59 Installation...

  • Page 47: General Information

    General Information MCAC-UTSM-2008-11 1. General Information General warning 1. These units have been designed to chill and heat water and must be used in applications compatible with their performance characteristics; these appliances are designed for residential or similar applications. 2. Incorrect installation, regulation and maintenance or improper use absolves the manufacturer from all liability, whether contractual or otherwise, for damage to people, animals or things.

  • Page 48: Description Of Standard Unit

    MCAC-UTSM-2008-11 Description of Standard Unit 2. Description of Standard Unit These air cooled reverse-cycle chillers with axial-flow fans operate with refrigerant fluid and are suitable for outdoor installation. They are factory tested and on site installation is limited to water and electrical connections.
  • Page 49 Description of Standard Unit MCAC-UTSM-2008-11 Outdoor Unit 10kW 12 14 16kW Water pump box Installation...

  • Page 50: Installation

    MCAC-UTSM-2008-11 Installation 3. Installation 3.1 Choice of installation site Before installing the unit, agree with the customer the site where it will be installed, taking the following points into consideration: - check that the fixing points are adequate to support the weight of the unit; - pay scrupulous respect to safety distances between the unit and other equipment or structures to ensure that air entering the unit and discharged by the fans is free to circulate.
  • Page 51 Installation MCAC-UTSM-2008-11 3.3.2 Refrigerant Piping Note: 1. Refrigerant piping connection is on the right side of outdoor unit. 2. The piping connects to refrigerant piping connection. 3. Install the refrigerant piping towards left, right or back. 4. Refer to system identifiers in valve installation board for corresponding connections of indoor units. a.
  • Page 52 MCAC-UTSM-2008-11 Installation Caution Too large torque will harm the bell-mouth and too small will cause leakage. Please determine the torque according to the table below: Flare dimension A Pipe gauge Tightening torque Flare shape Min (mm) Max 15～16N.m Φ6.4 (153～163kgf.cm) 25～26N.m Φ9.5 12.0...
  • Page 53 Installation MCAC-UTSM-2008-11 5. After vacuuming, close the Lo-lever of manifold valve and turn off vacuum pump. When doing vacuuming for more than 15 minutes, please confirm that the indicator of multi-meter points to-1.0X105Pa(-76cmHg) 6. Totally open the Hi-stop valve and Lo-stop valve. 7.
  • Page 54 MCAC-UTSM-2008-11 Installation 3.4.3 The procedures for connecting pipe 1) Connect the water inlets and water outlets of water pump box and indoor unit with soft connection and charge water into the pipe to check whether there is leakage. Then connect the outdoor unit piping. Bend the piping carefully and do not damage them.

  • Page 55: Hydraulic Connection

    Hydraulic Connection MCAC-UTSM-2008-11 4. Hydraulic Connection The choice and installation of components is the responsibility of the installer who should follow good working practice and current legislation. Before connecting the pipes, make sure they do not contain stones, sand, rust, dross or other foreign bodies which might damage the unit. Construction of a bypass is recommended to enable the pipes to be washed through without having to disconnect the unit (see drain valves).
  • Page 56 - Make sure the installation fill/top-up water cock is closed - Open the drain cock outside the unit and all the installation and terminal air vent valves. Size and position of connections Model MGA-D10/N1 MGA-D12/N1 MGA-D14/SN1 MGA-D16/SN1 Water inlet/outlet (Ø) R5/4”...

  • Page 57: Electrical Connection

    Electrical Connection MCAC-UTSM-2008-11 5. Electrical Connection 5.1 Notice The split mini chillers leave the factory already wired, and require the installation of an omnipolar thermal overload switch, a lockable mains disconnecting switch for the connection to the mains power supply , and the connection of the flow switch to the corresponding terminals.
  • Page 58 MCAC-UTSM-2008-11 Electrical Connection Electrical Panel Layout Name Name Name Power control board Terminal board Transformer Fan capacitor Emergency switch Compressor capacitor Compressor contactor 5.3 Outdoor unit wiring specifications Specifications Notes Model Name Quantity (for reference) (purchased by customers) 10/12kW Overall power cord RVV-300/500 3×6.0mm For outdoor unit 14/16kW...

  • Page 59: Auxiliary Electric Heater Installation

    Auxiliary Electric Heater Installation MCAC-UTSM-2008-11 6. Auxiliary Electric Heater Installation Installation...

  • Page 60: Maintenance

    MCAC-UTSM-2008-11 Maintenance 7. Maintenance 7.1 Shut down for long periods If it is previewed not to use the machine for long periods, after deactivating the chiller: ● Make sure the remote switch SA1 is in the "OFF" position, or alternatively disconnect the unit from the power supply.
  • Page 61 Maintenance MCAC-UTSM-2008-11 ● Connect the refrigerant gas cylinder or a filling cylinder to the low pressure line pressure gauge connection. ● Fill with the quantity of refrigerant gas indicated on the rating plate of the unit. ● Always check the superheating and subcooling values. In the nominal operating conditions for the appliance, these should be between 5 and 10°C and between 4 and 8°C respectively.

This manual is also suitable for:

Mga-d12/n1Mga-d14/sn1Mga-d16/sn1

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