Refrigeration system


CoolTop DX rack-mount cooling units are specially designed for easy mounting on top of racks and are ideal for effective purposeful cooling of larger server rooms and data centers. CoolTop DX indoor units include a special exchanger with two separate refrigerant circuits and are connected to the outdoor condensing units with refrigerant piping.
In basic mode, an outdoor unit with a power of 19 kW or 24 kW can be connected to each CoolTop unit. If it is necessary to increase the cooling power, a second outdoor cooling unit can be connected and thus increase the cooling power up to 38 kW, or, where appropriate, to 48 kW. CoolTop is a solution for both energy-conscious customers to achieve an immediate increase in cooling power in the given space and without the need for construction modifications.


  • They do not occupy floor space
  • No water in the data center
  • Supply cooled air directly to the cold aisle in front of the server racks
  • Vertical air circulation circuit reacts to ambient conditions
  • Very low energy consumption thanks to a large heat exchanger and EC axial fans
  • Modern and easy-to-use control system
  • Allows flexibility in space organization
  • A double floor is not necessary for air distribution
  • Easy assembly in a hot or cold closed aisle
  • Perfectly compatible with CONTEG distribution racks
  • Delivery with wide range of accessories
  • Coolant exchanger with two circuits
  • Possibility of power regulation from 30 to 100 %
  • Possibility of connecting to 2 outdoor units
  • Double stainless steel condensate tray, to be placed under the heat exchanger
  • Regulator with ModBus communication (no need for extra accessories)


  • Cold closed hallways
  • Hot closed hallways
  • Can be combined with CoolTeg units in the same area (hallway)

Find out where you can use these ventilation units

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