Midea MC-SU75-RN8L-B Chiller
Midea MC-SU75-RN8L-B Chiller
Midea MC-SU75-RN8L-B Chiller
Midea MC-SU75-RN8L-B Chiller
Midea MC-SU75-RN8L-B Chiller
Midea MC-SU75-RN8L-B Chiller

Midea MC-SU75-RN8L-B Chiller

  • Cooling
    70.00 kW
  • Heating
    75.00 kW
  • EER
    2.61
  • COP
    3.16
  • Noise
    69 dB

 

Aqua Thermal Chillers

Overview

  • Refrigerant R32 75% less impact on global warming;
  • DC Inverter technology allows precise consumption on real load;
  • One-stop solution for heating, cooling and domestic hot water;
  • Maximum water temperature up to 60°C for DHW mode;
  • Minimum operation ambient temperature down to -10℃ for cooling mode;
  • High energy efficiency level A++ for energy saving (Water outlet temperature at 35°C);
  • Space saving;
  • Maximum 2240kW combination capacity;
  • Maximum 256 units controlled through Modbus;
Midea Aqua Thermal Chillers

Ambient & Outlet Water Temperature

Note: For cooling mode, if outlet water temperature is less than 5°C, anti-freeze liquid is needed. 0°C water temperature can be reached by changing DIP switch setting.

High Quality Components

DC Inverter compressor

  1. More compact, weight reduced by 50%
  2. Specially designed scroll profile for R32
  3. New structure enhances mid-frequency performance
  4. Advanced permanent magnet DC motor improves low frequency band performance

Midea Aqua Thermal Chillers
Midea Aqua Thermal Chillers

High Efficiency Plate Heat Exchanger

Plate heat exchanger uses metal plates to transfer heat between refrigerant and water. The fluids are exposed to a much larger surface area because the fluids spread out over the plates, so both heat transfer efficiency and heat exchanger speed are greatly improved. Multi protections including voltage protection, current protection, anti-freezing protection and water flow protection ensure system safety running.

  1. Refrigerant pipe
  2. Water pipe
  3. Water pipe
  4. Refrigerant pipe

DC Fan Motors

Fan speed is controlled according to the system pressure and system load, reducing power consumption by 30%. There are 32-step vector control.

Midea Aqua Thermal Chillers
Midea Aqua Thermal Chillers

High Performance Heat Exchanger

Hydrophilic film fins and inner-threaded copper pipes optimize heat exchange efficiency. The specially coated blue fins enhance durability and protect against corrosion from air, water and other corrosive agents, assures a longer coil service life.

Heat exchanger aluminum foil

  • Standard products: 200h of neutral salt mist
  • Heavy anti-corrosion products: 1000h of neutral salt mist, 140h of acid salt mist

Heat exchanger copper pipe

  • Standard products: 24h of neutral salt mist
  • Heavy anti-corrosion products: 150h of neutral salt mist

  1. Enlarge heat-exchanging area (Fin)
  2. Enhance heat transfer (Inner-threaded pipe)
  3. High efficiency (Fin + inner-threaded pipes)

Precise Flow Control

Patented liquid distribution components maximize performance and minimize impact of defrosting operation. 500-step EXV with capillary tube allows stable and accurate gas flow control. Fast response results in higher efficiency and improved reliability.

Midea Aqua Thermal Chillers

Advanced Technology

Midea Aqua Thermal Chillers

Enhanced Vapor Injection (EVI) Compressor

Thanks to the vapor injection DC inverter compressor, unit can run heating mode stably down to -20℃, and the heating capacity can be improved greatly.

Plate Heat Exchanger Subcooling

Plate Heat Exchanger as a secondary intercooler boosts up refrigerant subcooling and improves 10% energy efficiency.

Midea Aqua Thermal Chillers
Midea Aqua Thermal Chillers

Precise Oil Control Technology

Four stages of oil control technology ensure all outdoor compressor oil is always kept at a safe level, eliminating any compressor oil shortage problems.

  • Compressor internal oil separation.
  • High-efficiency centrifugal oil separator (with separation efficiency of up to 99%) ensures that oil is separated from the discharge gas and returned to the compressors in a timely fashion.
  • Oil balance pipe ensures oil distribution to keep compressor running normally.
  • Auto oil return program monitors the running time and system status to ensure reliable oil return.

Refrigerant Cooling PCB

Refrigerant cooling PCB technology reduces electric control heating under harsh working conditions, effectively reduce the temperature of electronic control components, ensure the stable and safe operation of the unit control system.

Midea Aqua Thermal Chillers
Midea Aqua Thermal Chillers

Intelligent Defrosting Technology

The intelligent defrosting program calculates the time required for defrosting according to the actual system status, eliminating heat losses from unnecessary defrosting. A specialized defrosting valve reduces time required for defrosting to as little as four minutes.

Rapid Cooling or Heating

The DC inverter compressor reaches full capacity rapidly, providing quicker cooling or heating with lower levels of temperature fluctuation during the cooling/heating operation.

Midea Aqua Thermal Chillers

Flexibility

Midea Aqua Thermal Chillers

Modular Design

Modularity is perfect when an extension of capacity becomes required as the building load range from 75kW to 2240kW.

Space Saving and Simplified Installation

Single unit covers an area of only 1.92m² , which greatly saves lots of space for group control. The hydraulic models (customized) has the water pump components inside the unit, which can save the installation cost and time and make installation easier.

Midea Aqua Thermal Chillers

High Reliability

Midea Aqua Thermal Chillers

Alternative Cycle Duty Operation

In one combination system, all units operate as alternative in cycle duty to keep equal running time, realize higher stability, better reliability and longer lifespan.

Alternate Defrost Operation

By detecting the water temperature, the proportion of defrosting unit can be determined intelligently so as to realize small water temperature fluctuation during the alternate defrosting period.

Midea Aqua Thermal Chillers
Midea Aqua Thermal Chillers

Backup Function

In a combination system, if one unit failed, other units can be back-up instead of the failed one for continuing operation.

Multiple Functions

Multiple Slient Modes

Different silent modes enable noise reduction to suit time of day and ambient noise levels.

  • Standard mode
  • Silent mode
  • Super silent mode
  • Night silent mode
Midea Aqua Thermal Chillers
Midea Aqua Thermal Chillers

Multiple Design Optimizations

1.Optimized fan blade edge by CFD programs with analyzing air pressure distribution. Realize higher air volume, lower noise level.

Guide air diffuser hood
Reduce noise effectively

Blade trailing edge dentate structure design
Blade suction surface concave design
Reduced turbulent kinetic energy

Blade installation angle optimization design
Improve airflow and fan efficiency

Large blade front edge bending sweep design
Blade outer edge falling vorticity design

Big heat exchanger area
Located in the upper part
Uniform air flow
High efficient “Double U” heat exchanger

USB Function

Convenient program upgrade
No need to carry any other heavy equipments but only USB can realize program upgrade of indoor unit and outdoor unit.

Midea Aqua Thermal Chillers
Midea Aqua Thermal Chillers

7 Levels of energy saving

For projects with temporary electricity supply restrictions, the outdoor unit supports 7 levels of energy management which can be set to output 40-100% capacity. It prevents tripping during electricity supply restriction conditions and remains system continue to operate.

Weather Temperature Curve

With the help of Weather temperature curve function, water temperature will automatically change as outside air temperature changes. When outdoor air temperature increases/decreases, the heating load will decrease/increase and water temperature will decrease/increase automatically. When outdoor air temperature decreases/increases, the cooling load will decrease/increase and water temperature will increase/decrease automatically.

Midea Aqua Thermal Chillers
Midea Aqua Thermal Chillers

Remote alarm, on/off control, cooling/heating control.

One-touch Water Temperature Switching

For cooling and heating mode, different water temperatures can be switched just by one-touch.

Midea Aqua Thermal Chillers
Midea Aqua Thermal Chillers

Anti-Corrosion Protection

Outdoor units are given anti-corrosion treatment for non-extreme conditions as standard and can also be customized with heavy anti-corrosion treatment on main components for surface protection against corrosive air, acid rain and saline air (for installations in coastal regions) to extend machine life span. The integrity of the anti-corrosion treatment is ensured by subjecting major components and parts to salt mist testing, moisture and heating testing and light aging testing.

Fan motor

Standard products:

  • 72h of neutral salt mist

Heavy anti-corrosion products:

  • 240h of neutral salt mist

Painted sheet metal

Standard products:

  • 500h of neutral salt mist
  • 1000h of moisture and heating test
  • 500h of light aging test

Heavy anti-corrosion products:

  • 1000h of neutral salt mist
  • 2000h of moisture and heating test
  • 720h of light aging test

Screws / bolts / gaskets

Standard products:

  • 300h of neutral salt mist

Heavy anti-corrosion products:

  • 720h of neutral salt mist

Electric control box case

Standard products:

  • 96h of neutral salt mist

Heavy anti-corrosion products:

  • 240h of neutral salt mist

Heat exchanger copper pipe

Standard products:

  • 24h of neutral salt mist

Heavy anti-corrosion products:

  • 150h of neutral salt mist

Heat exchanger aluminum foil

Standard products:

  • 200h of neutral salt mist

Heavy anti-corrosion products:

  • 1000h of neutral salt mist
  • 140h of acid salt mis

Convenient Control

Midea Aqua Thermal Chillers

Touch key wired controller as standard accessory to control the chillers

  • Touch key operation
  • Parameter setting an LCD display
  • Real-time clock function
  • Multiple timer
  • Power-off memory function
  • Modbus
  • Address setting
  • Parallel function
  • Buzzer prompt tone and alarm functions
  • Weekly schedule
  • Double set point function
  • Energy saving function

Three User Levels

Three different user levels ensure users can easily access control functions and allow engineers convenient access to operating parameters.

Midea Aqua Thermal Chillers
Midea Aqua Thermal Chillers

Group control for up to maximum 16 units with one wired controller

Each unit can connect with one controller for setting and one controller for monitoring.

For 75/90/140kW model, maximum 16 units can be controlled with one controller.

For 180kW model, maximum 8 units can be controlled with one controller.

Modbus Compatible

Multilingual wired controller using Modbus communication protocol

Midea Aqua Thermal Chillers

Easy Installation

Midea Aqua Thermal Chillers

Built-in Components

  1. Hydraulic module (customization option)
  2. Water flow switch
  3. Wired controller
  4. Air purge valve
  5. Pressure relief valve

Water Pipe Connection

Only water piping installation is needed, no need to install refrigerant piping. Unit uses hoop connection which can be changed to flange connection by using Midea accessory in orther to suit more application

Midea Aqua Thermal Chillers
Midea Aqua Thermal Chillers

Rotatable electric control box

(Only for 90/180kW model)

The bottom layer can be easily achieved through the rotatable upper PCB, making the maintenance easier. Due to the micro combustibility of R32, the electric control box adopts explosion-proof design to ensure safety and reliability.

  • Rotatable upper PCB of the electric control box
  • Bottom layer of the electric control box
Technical Specification for MC-SU75-RN8L-B Chiller
ModelMC-SU75-RN8L-B
Power supply V/Ph/Hz 380-415/ 3 / 50
Cooling Capacity kW 70
Rated input kW 26.8
EER 2.61
Heating Capacity kW 75
Rated input kW 23.7
COP 3.16
Air heat exchanger Type Finned tube
Motor type DC motor
Output W 920
Quantity 2
Air flow m3/h 28500
Water heat exchanger Type Plate
Volume L 5.17
Water flow m3/h 12.04
Water flow range m3/h 8.0 ~ 15.5
Water pressure drop kPa 65
Refrigerant Type R32
Charged volume3 kg 9
Throttle type EXV
Sound pressure level (1m)5 dB(A) 69
Sound power level4 86
Dimension (W x H x D) Net dimension mm 2000 x 1770 x 960
Packing dimension mm 2085 x 1890 x 1030
Weight Net weight kg 440
Gross weight kg 455
Pipe connections mm DN50
Water pressure range MPa 0.05 ~ 1.0
Water flow switch m3/h 8
Vent Valve max working pressure MPa 1
Safety valve pressure MPa 0.6
Controller KJRM-120H2/BMWK
Ambient temperature range Cooling °C -10 ~ 48
Heating °C -20 ~ 43
Water outlet temperature range Cooling °C 0 ~ 20
Heating °C 25 ~ 54

Note:

  1. Outdoor ambient temperature 35°C DB. EWT 12°C, LWT 7°C;
  2. Outdoor ambient temperature 7°C DB/6°C WB. EWT 40°C, LWT 45°C;
  3. The total amount of refrigerant for unit which capacity above 90kW include (factory charged + field charged).
  4. Test standard: EN12102-1. Outdoor ambient temperature 35°C DB. EWT 12°C, LWT 7°C
  5. Outdoor ambient temperature 35°C DB. EWT 12°C, LWT 7°C
Manufacturer Midea
Type Chillers
Technology Inverter
Series Aqua Thermal
Outdoor Unit MC-SU75-RN8L-B
Power supply (V/ø/Hz) 400 / 3 / 50
Cooling Capacity (kW) 70
Heating Capacity (kW) 75
Power Input Cooling/Heating (kW) 26.8 / 23.7
EER (Energy Efficiency in Cooling) 2.61
COP (Energy Efficiency in Heating) 3.16
Dimensions - Outdoor Unit WxHxD (mm) 2000 x 1770 x 960
Weight - Outdoor Unit (kg) 440
Operation Range - Cooling (°C) -10 ~ 48
Operation Range - Heating (°C) -20 ~ 43
Refrigerant (type) R32
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