CyberCool 2

The high-end chiller

The units, which were produced in Hamburg, have been developed especially for use in Data Centers and industry and satisfy all requirements for efficiency and reliability.

CLIMATE.CUSTOMIZED. You have the challenge, we have the solution

Portfolio of customization

Solutions for CyberCool 2 units

  • For medium-sized and large Data Centers, ICT sector, industry, medical, mission critical applications

  • Indirect Free Cooling

  • Outdoor installation

Maximized component size ensures low energy consumption

Info CyberCool 2 Overview

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1. Maximized Free Cooling coils

  • Early switchover to efficient Mixed/Free Cooling mode for reduced compressor runtime
  • Minimized pump energy consumption thanks to low hydraulic pressure drops
  • Designed with copper and aluminium coils

2. Large microchannel condensers

  • Low fan energy consumption due to minimized airside pressure drops
  • Low condensing temperature in DX mode for a reduced energy consumption
  • Improved heat transfer with simultaneously lower refrigerant quantities

3. EC fans with reduced speed

  • Lower nominal current and noise emissions, as the fans always run in partial load mode
  • Optimized for continuous operation

4. Evaporators with large surface area for high evaporation temperatures

  • Low pressure drops and an optimized heat transfer ensure particularly high evaporation temperatures
Production of a CyberCool 2


  • Noise-optimized design

    encapsulated compressor chamber, fans with large surface area, ample coil surfaces

  • Low energy consumption

    Featuring high-quality components and an innovative product design, the CyberCool 2 boosts the energy efficiency of your air conditioning system to the max.

  • Reliable operation

    During the development of CyberCool 2 high-end chillers, no downtimes and absolutely reliable 24/7 operation in the Data Center were the primary objectives.

  • Innovative control

    The CyberCool 2 is ideal for integration in existing systems and can be controlled to perfection by the STULZ control system.

  • Made and Engineered in Germany

    Use is made exclusively of system components commonly available on the market and adapted for industry. This ensures the best possible spare parts supply and constant availability.

  • Ongoing quality management during production

    Every CyberCool 2 is tested in mechanical and electrical test runs to ensure perfect function and performance.

  • Natascha Meyer, Product Manager

    "The sum total of all these small details makes the difference!"

CyberCool 2 with screw compressors

  • Cooling capacity from approx. 400 to 1,400 kW
  • Refrigerant R134a
  • All screw compressors in combination with tube bundle evaporators with dry expansion (DX) 
  • Dual circuit chiller version

CyberCool 2 with scroll compressors

  • Cooling capacity from approx. 50 to 600 kW
  • Evaporator designed as a brazed plate heat exchanger
  • Refrigerant R410a
  • Single or dual circuit chiller versions

High-quality workmanship and engineering excellence – Made in Germany



  • Compressed gas pipe of stainless steel for screw compressors

  • Refrigerant and Free Cooling circuits in a symmetrically arranged pipeline system

  • Reduced solder and weld points resulting in low leakage losses

  • Electronic expansion valve as standard for all models

  • Wide range of applications at outside temperatures from – -40 to + 55 °C

  • Cable management – cables always routed inside sealed metal cable

  • Exclusive use is made of motor protectors for 3-phase consumers

  • Integration of air baffles to prevent turbulence, ensuring optimum flow to the internal W-block coil elements

  • Consistent separation of air in individual module blocks (pressure chamber principle)

  • Certification to ISO 9001 and ISO 14001

  • Sturdy base frame in welded U-profile steel

  • Isolated compressor chamber to reduce noise

  • Maximized coil surfaces for refrigerant and Free Cooling circuits

  • Easy installation and machine connection

  • Generously sized switch gear cabinet with space for numerous options

  • Active cooling of switch gear cabinets by a closed-circuit cooling unit to ensure thermally stable operating conditions

  • Use of identical system components, e.g. compressors (1 spare part for 2 refrigerant circuits)


Control and monitoring  

  • C7000 controller 
  • STULZ hardware and software developed in-house
  • Connection to building automation systems
  • Operates several chillers in parallel, or adaptation to specific customer requirements
  • Sequencing for runtime compensation
  • Energy efficient system operation at every operating point
  • Early warning system (warning and main alarm)

Successful Projects


Further information you will find in the brochure for download:

  • 4 application examples
  • What happens after a power failure
  • Nomenclature
  • Technical Data

  • STULZ CyberCool 2 Brochure

    The quietest, most efficient and most reliable chiller in its class.
    Made as required. Made in Germany.

    • File: STULZ_CyberCool2_Brochure_0217_en.pdf

    • Type: Adobe PDF

    • Size: 5,10 MB

    • Language: English

    • Date: 2017-02-01

STULZ Services

For this product we recommend the following STULZ services


Contact us

For sales and support inquiries, please make a selection below to find your local contact.

  • Sales
  • Service
  • STULZ GmbH


    Stulz Territories: Lower Saxony, Baden-Württemberg, Bavaria, Berlin, Brandenburg, Bremen, Hamburg, Hesse, Mecklenburg-Western Pomerania, North Rhine-Westphalia, Rhineland-Palatinate, Saarland, Saxony, Saxony-Anhalt, Schleswig-Holstein, Thuringia

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