MTA Chiller | Phoenix G Air Cooled Water Chiller

Air cooled water chillers featuring semi-hermetic screw compressors with R513A. Nominal cooling capacity 261 - 693 kW

TThe PHOENIX G series has been developed to optimize the capacities and qualities of refrigerant R513A, green alternative with low GWP. They find their natural application in situations where, for most of the year, the thermal request is lower by the load which the unit was dimensioned. Thanks to Smart Stepless regulation according to the exact effective cooling load requested by the system, PHOENIX G achieves SEER seasonal efficiency ratio compliant with the ErP regulation, as well as very high nominal load EER ratios.


  • Refrigerant R513A with low GWP;
  • High seasonal energy efficiency (SEER);
  • The controller provides maximum flexibility to adapt to any operating condition, thanks to the Smart Stepless algorithm specifically developed by MTA;
  • High reliability and continuity of operation (up to 2 screw compressors and “Smart Stepless” algorithm); • Extended operating limits;
  • Complete safety equipment, including phase monitor, pressure switches, differential pressure switch, crankcase heaters, compressors operating envelope and oil level;
  • Wide range of accessories and kits for custom solutions.

Standard Features

  • • Refrigerant R513A;
  • High efficiency screw compressors with stepless regulation optimized for R513A refrigerant gas;
  • Crankcase heater compressor and phase-monitor;
  • Air-cooled condensers (copper tubes/aluminium fins) with transverse “V” shape;
  • Axial fans configured with protective grilles and sickled bladed with die-cast aluminium airfoil profiled;
  • Electronic expansion valve;
  • Shell & tube evaporator optimized for R513A;
  • Victaulic hydraulic connections ki (supplied as standard with each unit);
  • Electrical cabinet protection rating IP54;
  • xDRIVE controller programmed with software specifically developed by MTA; high computing capacity and user friendly graphic interface; connectivity and supervision via Ethernet, USB, RS485 Modbus.


  • Low ambient temperature version (down to -20 °C);
  • Single pump with low or medium head pressure;
  • Twin water pump with low head pressure;
  • Water accumulation tank;
  • Antifreeze heaters for heat exchangers and hydraulic module (if included);
  • Suction compressors valves;
  • High efficiency EC brushless fans (base equipment for SSN configuration);
  • Microchannels condenser coils;
  • Protection coating for condenser coils, suitable for installation in aggressive environments;
  • Metallic mesh filters for condenser coils protection;
  • Soft-starter for compressors;
  • Soundproof housing for compressors (for HE configuration);
  • Total heat recovery.

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