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Water chiller
MWU series

Mycond version of MWU heat pumps with water-cooled condenser and scroll compressors. Available in only cooling and heat pump versions. Heat pumps are highly efficient and are ideal for projects with a small installation area, and projects where the outdoor unit needs to be installed remotely
Water chiller<br/> MWU series

Eco-friendly water-cooled chillers of MWU series offered by Mycond are the right fit for facilities where the installation area is small, or the outdoor unit must be installed distantly.

81,2 - 154,2 kW
Heating capacity:
74,4 -149,2 kW
Cooling Capacity:
Designation

 Compressor
Compressor

High efficiency scroll compressors are used in this unit. This type of compressor has impressive capacity, low friction losses and high operating efficiency. Each modular unit is equipped with two scroll compressors. By combining several modules into a single system, you can control the capacity in several stages, which will be more energy efficient under partial load.

 Condenser and evaporator
Condenser and evaporator

The unit uses high-efficiency shell-and-tube heat exchangers made of copper tubes with grooved inner surface, which means more efficient heat transfer thanks to more turbulent refrigerant flow. The increased surface area reduces temperature drop during the heat exchange, while improving the EER. The condenser has a subcooler in the lower part for better subcooling of liquid refrigerant. The heat exchangers are rigorously tested for defects, as well as pressure tested for leaks, to ensure safety and reliability.

 Cooling accessories
Cooling accessories

The electronic expansion valve and all the protective controls used in the units are provided by world-famous manufacturers, which means proven quality and longterm stable operation.

 Intelligent control
Intelligent control

The unit has a user-friendly interface for various operating needs. With microcomputer-based monitoring, the unit implements various functions, such as temperature control, time setting, data recording, status display, alarm output, temperature setting and group control.

Modular design for improved energy efficiency

Each individual module offers 2-step capacity control. Combination of modules gives more flexibility in capacity control. The intelligent compressor balancing improves the system efficiency at small loads and saves the energy for continuous operation. Failure of one module does not affect other modules. The modules can be combined in different ways and controlled independently.

 

 Numerous protection features
Numerous protection features

Stable operation of an air conditioner is critical for industrial and commercial users. The eco-friendly watercooled scroll chiller (heat pump) by Mycond has passed long-lasting tests at even stricter conditions than required by the national standard. The results of testing exceed the national standard. The unit is equipped with numerous protections that ensure normal operation, long service life and safety.

 

  • Phase sequence protection
  • Compressor stop-start protection
  • Compressor overload protection
  • Discharge temperature protection
  • High and low pressure protection
  • Phase loss protection
  • Automatic freeze protection
  • Automatic alarm and reset for some faults
  • Automatic loading and unloading
  • Powerful external interlock

 Specifications of a cooling only unit 

 

Specifications       Units       MWU 075 DC       MWU 110 DC       MWU 145 DC   
Cooling capacity       kW       74,4       112,2       146,3   

Input power   

EER

kW

    W/W   

   14,9   

5

   22,4   

5

   29,2 

5  

Number of compressors               2       2       2   
Capacity steps     % 0/50/100 0/50/100 0/50/100
Water pipe diameter in the shell-and-tube evaporator   DN 50 DN 50 DN 65
Water flow rate in the shell-and-tube evaporator m3/h 12,8 19,3 25,2
Water pressure drop in the shell-and-tube evaporator kPa 39 47 60
Connection method in the shell-and-tube evaporator   Flexible clamp Flexible clamp Flexible clamp
Water pipe diameter in the shell-and-tube condenser   DN 65 DN 65 DN 80
Water flow rate in the shell-and-tube condenser m3/h 16,0 24,1 31,5
Water pressure drop in the shell-and-tube condenser kPa 24 48 82
Connection method in the shell-and-tube condenser   Flexible clamp Flexible clamp Flexible clamp
Compressor type   Hermetic scroll compressor Hermetic scroll compressor Hermetic scroll compressor
Start method   Direct start Direct start Direct start
Maximum operating current, А   48 71,9 95,8
Dimensions, L x W x H mm 1880×660×1380 1880×660×1490 1880×740×1590
Refrigerant type   R410A R410A R410A
Number of cirquits   2 2 2
Control method   Electronic expansion valve (EXV) Electronic expansion valve (EXV) Electronic expansion valve (EXV)
Refrigerant charge kg 12 14,5 18
Lubricant    POE POE POE
Packed weight kg 470 520 630
Operating weight kg 500 555 670

Notes:
1. The above data have been obtained at the rated operating conditions: inlet/outlet chilled water temperature 12/7 °C; inlet/outlet cooling water temperature 30/35 °C.
2. Power supply: 380 V, 3 + N, 50 Hz; voltage tolerance: ±10%.
3. For other associated unit parameters, contact the supplier.
4. The unit specifications can be changed without prior notice for the purpose of improvement.

 

Specifications Units MWU 075 DG MWU 110 DG MWU 145 DG
Cooling capacity kW 75,6 113,4 149,2
Heating capacity kW 81,2 121,2 154,2

Input power in the cooling mode

EER

kW

W/W

13,7

5,52

20,5

5,53

27,1

5,5

Input power in the heating mode

COP

kW

W/W

18,3

4,44

28,1

4,3

36

4,3

Number of compressors   2 2 2
Capacity steps % 0/50/100 0/50/100 0/50/100
Water pipe diameters on the cold and hot water sides   DN 50 DN 50 DN 65
Water flow rate on the cold and hot water sides m3/h 13 19,5 25,7
Water pressure drop on the cold and hot water sides kPa 40 48 63
Connection method on the cold and hot water sides   Flexible clamp Flexible clamp Flexible clamp
Water pipe diameters on the side of ground water circuit   DN 65 DN 65 DN 80
Water flow rate on the side of ground water circuit m3/h 16,3 24,4 32,1
Water pressure drop on the side of ground water circuit kPa 25 50 87
Connection method on the side of ground water circuit   Flexible clamp Flexible clamp Flexible clamp
Compressor type   Hermetic scroll compressor Hermetic scroll compressor Hermetic scroll compressor
Start method   Direct start Direct start Direct start
Maximum operating current, А   48 71,9 95,8
Dimensions, L x W x H mm 1880×660×1380 1880×660×1490 1880×740×1590
Refrigerant type   R410A R410A R410A
Number of cirquits   2 2 2
Control method   Electronic expansion valve (EXV) Electronic expansion valve (EXV) Electronic expansion valve(EXV)
Refrigerant charge kg 12 14,5 18
Lubricant   POE POE POE
Packed weight kg 470 520 630
Operating weight kg 500 555 670

Recommended concentration of glycol solution:

 

Outlet water temperature, °C Recommended mass fraction, %
0 – 3 20
-5 – 0 25
-10 – -5 35

Notes:
1. The above data have been obtained at the rated operating conditions:  

Cooling mode: inlet/outlet chilled water temperature 12/7 °C;  inlet/outlet geothermal water temperature 25/30 °C.

Heating mode: outlet hot water temperature 45 °C; inlet geothermal water temperature 10 °C.
2. If the outlet geothermal water temperature is below 3 °C, add glycol solution to the water. For details, see table “Recommended concentration of glycol solution”.
3. Power supply: 380 V, 3 + N, 50 Hz; voltage tolerance: ±10%.
4. For other associated unit parameters, contact the supplier.
5. The unit specifications can be changed without prior notice for the purpose of improvement.

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