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

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Heating capacity

81,2-154,2 kW

Cooling capacity

74,4-149,2 kW

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.

Designation

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

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 and EER. The condenser has a subcooling in the lower part for better subcooler 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

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

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

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

Spesifications	Units	MWU 075 DС	MWU 110 DС	MWU 145 DС
Cooling capacity	kW	74,4	112,2	146,3
Input power	kW	14,9	22,4	29,2
EER	W/W	5	5	5
Number of compressors		2	2	2
Capacity steps	%	0-100, 2 steps	0-100, 2 steps	0-100, 2 steps
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 compresor	Hermetic scroll compresor	Hermetic scroll compresor
Start method		Direct start	Direct start	Direct start
Maximum operating current, A		48	71,9	95,8
Dimensions, L x W x H	mm	1880x660x1380	1880x660x1490	1880x740x1590
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 brand		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.

Spesifications	Units	MWU 075 DG	MWU 110 DG	MWU 145 DG
Cooling capacity	kW	75,6	113,4	149,2
Heating power	kW	81,2	121,2	154,2
Input power in the coolng mode		13,7	20,5	27,1
EER	W/W	5,52	5,53	5,5
Input power in the heating mode		18,3	28,1	36
COP	W/W	4,44	4,3	4,3
Number of compressors		2	2	2
Capacity steps	%	0-100, 2 steps	0-100, 2 steps	0-100, 2 steps
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 graund water circuit		DN 65	DN 65	DN 80
Water flow rate of the side of graund water circuit	m³/h	16,3	24,4	32,1
Water pressure drop on the side of graund water circuit	kPa	25	50	87
Connection method on the side of graund water circuit		Flexible clamp	Flexible clamp	Flexible clamp
Compressor type		Hermetic scroll compresor	Hermetic scroll compresor	Hermetic scroll compresor
Start method		Direct start	Direct start	Direct start
Maximum operating current, A		48	71,9	95,8
Dimensions, L x W x H	mm	1880x660x1380	1880x660x1490	1880x740x1590
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 brand		RL32-3MAF	RL32-3MAF	RL32-3MAF
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.