Air cooled chillers
Nominal cooling capacity 375 – 1908 kW

The chillers of the PHOENIX G series, with R513A refrigerant, represent the best solution for liquid cooling of medium and large industrial processes, ensuring energy savings levels in accordance with ErP EcoDesign directive. The screw compressors installed on PHOENIX G chillers are developed and optimized for R513A, and thanks to the “Smart Stepless” software algorithm they are capable to deliver the right cooling capacity according to the request of the system, even in situations of high load variability.

Condensing units are modular, allowing the fans to stop gradually as a function of the instantaneous thermal load, helping to increase seasonal energy efficiency of the units. The management of the units is entrusted to a control microprocessor which manage in total autonomy all main functions, including adjustments, the alarms and the interface with the outside.

Technical Features.

Mode: Cooling
Compressors: Screw Compressor
Refrigerant: R513A
Heat Exchanger: Shell and tube heat exchanger
Fan: Axial fan

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  • Refrigerant R513A with low GWP;
  • High seasonal energy efficiency (SEPR HT);
  • 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 kit (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.

Acoustic configurations:

  • HE - basic acoustic configuration;
  • SHE - low noise acoustic configuration;
  • SSN - very low noise acoustic configuration.


  • 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 (up to model 6002);
  • Antifreeze heaters for heat exchangers and hydraulic module (if included);
  • Suction compressors valves;
  • High efficiency EC brushless fans (base equipment for SSN);
  • 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 (up to model 6002).


  • Antivibration mountings kit;
  • Metallic mesh filters for condenser coils protection;
  • Replicated remote user terminal kit;
  • Supervision system xWEB300D EVO;
  • Modularity kit for xDRIVE (master/slave from 3 to 7 units).

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