CyberHandler 2

The indirect evaporative Free Cooling Air Handling Unit

Far more than just a product, the CyberHandler 2 is a complete solution offering you not only a wide range of cooling capacities from 30 to 520 kW, but also a full range of services such as Life Cycle Cost Calculation, Reverse Osmosis water treatment, Commissioning, Maintenance and Warranty. With a high efficient indirect evaporative Free Cooling design and state-of-the-art components the CyberHandler 2 minimizes the running costs and achieves pPUE values down to 1,02.

Solutions for CyberHandler 2 units

  • For small to large Data Centers

  • Direct Free Cooling

  • Indirect Free Cooling

  • 24/7 Year round operation

  • pPUE values between 1.02 - 1.10

  • Available in 11 sizes

The CyberHandler 2

Technology and Infrastructure



• Indirect Free Cooling: No contamination from outside air
• Unbeatable efficiency levels with pPUE values between 1.02 - 1.10 depending on application and location
• Year-round operation with evaporative cooling
• Outdoor installation — Saves space in the data center
• Reverse osmosis (Hygienic Safety, Durable)
• Removes unwanted substances: 99 % of water impurities, 100 % of Legionella

The complete solution

CyberHandler 2 is more than a product. We have a full range of services available to offer you a turnkey solution for the data center cooling:

  • Software tools for the calculation of the Life Cycle Cost/pPUE
  • Reverse Osmosis (RO) water treatment system
  • Commissioning
  • Maintenance
  • Warranty

CyberHandler 2 Select

  • Calculation of return on investment
  • Simulation of individual product requirements in the CyberHandler 2 Select and optimization of operating conditions


  • Outdoor contamination free due to Indirect Free Cooling

  • Evaporative cooling extends Indirect Free Cooling operation all year round

  • Unbeatable energy efficiency levels with pPUEs in the range of 1.02 – 1.10

  • Lower total cost of ownership (TCO): reduced CAPEX, OPEX, maintenance, infrastructure costs etc

  • Internal white space is reduced to a minimum, as the unit is installed externally

  • Simplified installation: easier management of power cabling, pipes and water, not needed inside the white space

  • Downsizing of the electrical infrastructure allows savings in CAPEX of 6-8%

  • Faster Return on Investment

Operation Modes

The special construction with its extremely efficient combination of Free Cooling and evaporative cooling reduces energy costs. The system has been optimized to such an extent that in most regions, 100% mechanical cooling is no longer necessary.

"Dry Mode"(Free Cooling only):

Adiabatics OFF
Mechanical Cooling OFF

"Wet Mode"(Adiabatic):

Adiabatics ON
Mechanical Cooling OFF

"Top-Up Mode"(MixMode):

Adiabatics ON
Mechanical Cooling ON

Precise control

Our dynamic control allows an adaptation to important IT requirements such as the precise and effective adjustment of the air-side temperature difference (Delta-T) of cooling units to the Delta-T of the server racks.

Cooling Configurations

Cooling Configurations

Indirect evaporative Free Cooling

The ideal solution when the outdoor ambient conditions are suitable to reach the room supply temperature set point without the need of additional mechanical cooling. Only the adiabatic Free Cooling system is enough to achieve the required cooling capacity.
Dry, and Wet Mode.

Indirect evaporative Free Cooling with Top-Up integrated DX cooling system

An integrated DX Top-Up cooling system helps the Air Handling Unit to achieve the required cooling capacity when the extreme outdoor ambient conditions are reached. The complete DX system (evaporator/compressor/condenser) is inside the unit. The top-up DX system can reach up to 30% of the total required cooling capacity. Dry, Wet and Top-Up Mode

Indirect evaporative Free Cooling with CW Coil Top-Up/Redundant cooling

In case of extreme outdoor ambient conditions, the adiabatic cooling system is complemented by an integrated chilled water coil connected to a remote chiller. Options for the full CW coil redundancy or top-up are available.
Dry, Wet and Top-Up Mode

Indirect evaporative Free Cooling with redundant DX cooling system

In this configuration the Air Handling Unit is equipped with a DX coil (evaporator and compressors) which connects to an outdoor condensing unit allowing the system to reach 100% redundancy only with the DX system.
Dry, Wet and Top-Up Mode

Variety of options for
the CyberHandler



  • 11 standardized sizes

  • Ready for roof and wall installation

  • The best casing leak classification according to the standard EN1886 (L1/L1)

  • Designed for minimum pressure losses

  • STULZ C7000 controller designed especially for precision control of mission-critical environments

  • Easy access for maintenance

  • Several filter classes available: G4, M5, F7 and F9

  • Designed to fit standard transportation

  • Flexible modular installation

  • 3 cooling systems in 1: Indirect Free Cooling, Indirect evaporative cooling, Mechanical cooling (as top-up or redundancy)

Control and monitoring


  • Designed specifically for precision control of mission-critical environments

  • Energy-efficient control concepts onboard (CW standby management, raised-floor pressure management, Indirect Dynamic Free Cooling)

  • Preservation of parameters during firmware updates

  • Onboard protocol Modbus RTU (customizing Modbus data point list)

  • Freely configurable digital alarm inputs

  • Integrated data logger

  • Internal Modbus component communication bus

  • Hardware periphery check after boot sequence

  • The following BMS protocols are supported: BACnet IP, BACnet MS/TP, Modbus TCP, and LonWorks

WIB 8000

The WIB 8000 all-in-one-web interface is user-friendly and highly functional, and it offers easy data exchange and monitoring with global adaptability.

Functions and Monitoring

Maximum efficiency especially in partial load and Mixed mode

  • Alert information via e-mail to up to five recipients
  • Ongoing retrieval of data from the controller
  • Monitoring of up to 32 units via Web browser
  • Ethernet port
  • Bus-independent zone operation
  • Easy connection to existing building management system
  • Works via HTTP and SNMP in parallel
  • No JavaScript, no cookies
  • Easy and quick configuration via Web page
  • Easy to install and suitable for retrofitting

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