Air cooled chillers with free cooling

Cooling capacity 51 - 177 kW.

ARIES FREE COOLING is the series of air cooled chillers with integrated free cooling with scroll compressors, designed by MTA for outdoor installation with R407C refrigerant gas. The free cooling technology is particularly suitable when the requirement for cooled water and the conditioning of environments is necessary throughout the year. It involves exploiting, in winter and in the intermediate seasons, the low temperature of the outside air to cool either completely or in part the process fluid normally cooled by the chiller through the use of refrigeration compressors, obtaining high energy savings when compared to traditional solutions. With complete independence, the microprocessor control of the ARIES FREE COOLING units manages, according to requirement, the gradual switching-off of the compressors and the fans, minimising energy consumption. In order to maximise the useful effect of the free-cooling, these units are equipped with condensing sections independent of those of free-cooling through the use of fans and special finned coils, unlike the solutions traditionally available on the market in which the free cooling batteries are superimposed on the condensing ones and supplied with a single system of fans. 

Technical features
Mode Compressors Refrigerant Heat exchanger Fan
  5 R407C 5 6

130716215620 ct ventilatore assiale

Reduced overall dimensions
Reduction of the working hours of the compressors
Greater reliability of the system
High energy savings 
Condensing section and free cooling section are separated to achieve maximum efficiency
Technical specifications
Galvanised carbon sheet steel and polyester powder coated
R407C refrigerant 
High energy efficiency scroll compressors 
Phase monitor and crankcase heater
Finned coils with copper pipes and aluminum fins generously dimensioned
Axial fans with optimised profile to reduce noise levels
Brazed plate heat exchangers  in AISI 316 stainless steel or immersed finned coil with high energy efficiency and low water pressure drops
Condensing section and free cooling section are separated to achieve maximum efficiency
Integrated hydraulic circuit composed of: water finned coils, motorised three-way valve with proportional control, single or double circulation pump with medium and high available head pressure, storage tank, expansion vessel.
Acoustic Versions
N - standard acoustic version 
SN - silenced acoustic version
SSN - super silenced acoustic version
Electronic thermostatic expansion valves 
Single or double pump with medium and high available head pressure
Integrated storage tank 
Electronic fans speed control
Compressors suction and discharge valves 
Remote control
Filters on condenser coils
Monitoring system


Sectors of application  
  • app plastics
  • app automotive
  • app chemical pharmaceutical
  • app machine tools
  • 2eac

Contact Us

  • Flat NO.1,NO 36, Moqaddas st,(11 West), South Shahrdari Blvd, Gheysar Amin pour Sq Saadat Abad, Tehran-Iran
  • 021 -26763715-26763710
  • 021-26763722
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