MTA Chiller | Aries G Air Cooled Water Chiller

Air-cooled water chillers featuring hermetic scroll compressors with R454B. Nominal cooling capacity 161 – 611 kW

The air-cooled water chillers ARIES G are designed to meet the current and future needs of commercial air conditioning systems. The huge versatility and reliability combined with an extended operating limits makes it suitable for every type of process. Developed to satisfy the seasonal efficiency performances required by the ERP EcoDesign Regulation, minimising the environmental impact through the low GWP refrigerant R454B. The ARIES G range is the example of targeted design, essential to obtain a reduced management costs without excluding reliability and environment protection.


  • Low GWP refrigerant R454B (GWP 466);
  • Seasonal efficiency compliant with the parameters required by the ErP regulation
    for SEER (Tier 2 01/01/2021);
  • Acoustic configurations SHE and SSN with reduced sound levels;
  • Extended working limits for starting up and operating even in the worst conditions;
  • Wide choice of options and kits for easy installation;
  • Easy access to all internal components;
  • Advanced electronic control with web server integrated.

Standard Features

  • Refrigerant R454B;
  • 4 or 6 scroll compressors on two refrigerant circuits;
  • Crankcase heater compressor and phase-monitor;
  • Shell & tube evaporator;
  • “Victaulic” hydraulic connections kit (supplied for each unit)
  • Electronic expansion valve; • Axial fans complete with protective grids and die-cast aluminium airfoil blade profiles;
  • Electrical cabinet protection rating IP54;
  • Refrigerant and oil charge;
  • Tests and checks performed on factory;
  • Electronic microprocessor controller with touch screen user display;
  • Modbus RS485 serial output for connections to supervision systems;
  • Master/slave configuration manageable between 2 units.


  • • MWT version (down to -10 °C outlet water temperature);
  • Low ambient temperature option (down to -20 °C);
  • Stainless steel shell & tube evaporator;
  • Single or twin water pump with low or medium head pressure;
  • Water accumulation tank;
  • Anti-freeze protection heaters for heat exchangers, pump/s and water accumulation tank (if included);
  • IN/OUT compressors valves;
  • Soundproof jacket or housing for compressors (for HE configuration);
  • High efficiency EC brushless fans (base option for SSN version);
  • Total heat recovery;
  • Protection coating for condenser coils, suitable for installation in aggressive environments;
  • Metallic mesh filters for condenser coils protection;
  • Soft starters to reduce by 20% the unit’s starting current.

To find out more about our MTA range, get in touch

Process Engineering


Air Conditioning