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DZ Chiller Series

up to 2173kW

Centrifugal Oil Free Water Cooled Inverter Chiller


Why choose our DZ chiller series?

Magnetic bearing technology

Frictionless magnetic bearings

Industry leading part load efficiency

Matched with highly efficient heat exchangers

Application flexibility

High condensing and low condensing operation


Available on:


Single compressor

R-134a platform

From 320 kW up to 742 kW on
R-134a platform

From 227 kW up to 478 kW on
R-1234ze(E) platform

Dual compressor

R-1234ze(E) platform

From 610 kW up to 1478 kW on 
R-134a platform

From 429 kW up to 945 on 
R-1234ze(E) platform

Triple compressor

R-134a platform

From 1038 kW up to 2173 kW on 
R-134a platform

From 741 kW up to 1417 kW on 
R-1234ze(E) platform


Magnetic Bearing Technology

Fitted with centrifugal compressors utilizing frictionless magnetic bearings for oil-free operation, integrated variable-frequency drives, and high-speed direct drive technology



Industry leading part load efficiency

The high efficiency compressor is matched with highly efficient heat exchangers to make an impressive chiller


Increased reliability

The frictionless magnetic bearing design needs no oil management system, resulting in increased reliability and reduced maintenance


Green building design

Developed to achieve maximum efficiency and is future-proofed to comply with existing design and regulatory standards as well as longer-term EU energy goals


Application flexibility

The DZ Series includes models suitable for both high condensing operation (Dry Cooler application) and low condensing operation (Cooling Tower applications)


Designed for compactness

Footprint reduced to the minimum levels thanks to a unique design with stacked heat exchangers

Option flexibility

Wide range of options, such as the Rapid Re-Start, allowing the unit to restart after a power failure within 26 seconds following power restoration, an automatic transfer switch to backup generator. Comprehensive solution for data centers applications.


Low noise solution with dedicated Compressor sound proof cabinet to ensure outstanding flexibility to match any specific application.


Hot Gas Bypass (HGBP)

The hot gas bypass (HGBP) reduces compressor cycling in order to stabilize the chilled water temperature at very low loads. The HGBP is a control capacity device that feeds the discharge gas directly into the evaporator in order to extend the minimum power range limit. This hot gas provides a stable refrigerant flow and keeps the chiller from short cycling under reduced load conditions combined with high lift. It also reduces surge potential on heat pump mode units.

Heat Pump Version

The Heat Pump Version including Pursuit Mode and allow reversibility on the water side. Cooling or heating mode operation can be selected by means of a dedicated switch installed on the unit electrical panel. If communication card is selected, cooling or heating mode operation can be managed by BMS. It includes HGBP always and additional 20 mm insulation.

  • Summary
  • Downloads
  • Magnetic Bearing Oil Free Centrifugal compressors
  • High efficiency flooded Heat Exchangers
  • Application flexibility, suitable for both Dry Cooler and Cooling Tower applications
  • App Ready for easy interface with remote smart device
  • Compact design through stacked heat exchangers
  • Heat pump version includes hot gas bypass
  • Sound Proof Cabinet option
  • Economizer availability on specific sizes
  • Rapid Restart option
  • Up to 3 compressors always in single circuit

DZ Chiller series logo


For further information call
0345 565 2700 or email