Air-Cooled Screw Chiller


1. 8 sizes available ranging from 380 kW to 1419 kW cooling capacity.

2.Semi-hermetic screw compressor for all models. Each compressor is equipped with a crankcase heater and a thermal overload cut-out; the screw compressor is also complete with a built-in electronic protection with temperature sensor located directly in the motor winding and on the discharge line.

3.External rotor type axial fans, equipped with three phase direct drive motors, low noise 8 poles, protection level IP54, provided with a protective outlet grille.

4.Evaporator built with high efficiency shell and tube type heat exchanger, factory insulated with flexible close cell material.

5.Condenser built with seamless copper tubes mechanically expanded into blue hydrophilic aluminum fins.

6.Refrigerant circuit complete with charge valves, filter drier, sight glass, gas-liquid separator, thermostatic expansion valve, high & low pressure switch. The heat pump unit is completed also with 4-way valve, liquid receiver and one way valve.

7.Hydraulic circuit built with galvanized pipe, complete with water discharge connection for shell and tube heat exchanger and flange type hydraulic connectors.

8.Electric panel consist of: compressor contactor, fan motor contactor, compressor isolating switch, fan protection breaker, phase sequence relay and microprocessor with function display.

9. Automatic operation dramatically reducing maintenance cost thanks to reliable microprocessor system.


power supply                                         380V/3PH /50Hz
compressor typeSemi- hermetic, twin screw compressor
Qty/ refrigerant circuitNr.1    42005       42005       42005       42037       42037       42037       42037       
Energy adjustment\25%,50%,75%,100% 4-step ( 50%~100% stepless as option)
Water side heat exchanger
TypeShell-and-tube heat-exchanger
Water Volumem3/h65.486103.2123.8151.4172206.4244.2
Water pressure dropkpa3954565870757169
Inlet/outlet pipe diametermmDN125DN125DN125DN150DN150DN150DN200DN200
Water side fouling factorm2.℃/kW0.086
Air side heat exchanger
TypeM shape Heat exchanger, High efficient exchanger tube + aluminum fins
Fans QuantityNr.68101014161620
Air Volumem3/h23000x623000x823000x1023000x1023000x1423000x1623000x1623000x20
Motor InputkW2.8x62.8x82.8x102.8x102.8x142.8x162.8x162.8x20
Physical dimensions
Standard type (mm)L381046805880588088009460946011700
Shipping weightkg332043305000550077508900910011100
Shipping weightkg352045305200570080509200940011400
Sound pressure level dB(A)7070717172747575

1) Nominal cooling capacities are based on the following conditions:             

Chilled water inlet/outlet temp: 12℃/7℃; Outdoor temp (DB/WB):35℃/24℃.             

2) The applicable ambient temperature range of R134a air-cooled screw units is 15℃~43℃。

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