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Product Family

Liebert® DCD

Liebert® DCD is an air-water heat exchanger that is integrated into the rear door of a server cabinet. The heat exchanger serves to absorb heat loads from server racks of up to 50 kW. Liebert® DCD is configurable with Liebert® DCM cabinets or can be mounted to other vendor cabinets. The design of the heat exchanger permits an increase in the chilled water temperature.

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Best Suited For:
  • Banking, Financial and Insurance
  • Data Center/Colocation/Hosting
  • Education
  • Government
  • Healthcare
  • Telecom
Warranty: One year warranty. Warranty extension on request.

Cooling is effected when the server exhaust air flows through the heat exchanger in the rear door of the server cabinet. Thereby, the cooling air is moved through the heat exchanger by the server fans. Thus, Liebert® DCD supports the cold room concept in which the warm exhaust air from servers is always led to a recooling device where it reduced to the temperature level of the server supply air. The supply air for cooling flows freely through the installation area. By omitting the otherwise necessary fans for room cooling, the cooling principle of Liebert® DCD is particularly energy-efficient. Furthermore, the design of the air-water heat exchanger permits in increase in the chilled water supply temperature, which also adds to an improved energy balance and large shares of free or adiabatic cooling. All this yields a significantly improved PUE (Power Usage Effectiveness). Due to low hydraulic pressure loss on the air side, the system suggests itself to suit a wide range of server types. Prior to using Liebert® DCD, the system and servers must be checked whether they match hydraulically. In particular, it must be made sure that the pressure increase of the server fans is sufficient for the flow resistance of Liebert® DCD. The low pressure loss on the water side minimizes the energy consumed by the pumps in the chill-water net. Liebert® DCD is designed exclusively for sensible cooling, any dehumidification of the room by means of Liebert® DCD should be avoided. The inclusive condensed water collection pan with a condensate drain is designed for short-time dewing only. Liebert® DCD is especially suited for use in Liebert® DCM server cabinets. This guarantees an optimal mechanical interface and appearance of the system in the Liebert® design. The swivel joint allow particularly simple operation and safe assembly. The door can be opened up to an angle of 160°. Adaptor for 3rd party cabinets can also be selected to fit existing datacenter infrastructure.


Improved PUE
Suggested to be used in a cold-room concept
Low pressure loss
No fans
Increased chilled water supply temperature
Reliable operation guaranteed by water-conducting hinges 
Compensates the higher pressure drop at high performances
For server installations with incomplete hot/cold cooling air separation
Easy to retrofit existing DCDs
Fan performance adapting cooling air flow
Two versions of DCDactive: For DCD35 and DCD50
Max. air flow rate at n+1
  DCD35 Active: 6300m³/h / 3700cfm
  DCD50 Active: 9000m³/h / 5300cfm
Max. Flow rate without redundancy
  DCD35 Active: 7400m³/h / 4400cfm
  DCD50 Active: 10800m³/h / 6400cfm
Voltage: 90 to 240VAC 50/60Hz
Max. electrical power consumption:  
  DCD35 Active: 980W
  DCD50 Active: 1185W
Fail-safe mode: Max fan speed in case of failure (sensor, controller)
Fan speed control by pressure difference
Individual fan monitoring
Alarm relay output for fan and sensor failure (general alarm)


Depth: 120mm (incl. hinges 150mm)
Width: 600mm, 700mm, 800mm (DCD50 only available for 800mm)
Cooling capacity: up to 50kW (suited for sensitive cooling only)
Air pressure loss: 35Pa (at 4,900m³/h) for DCD 35 / 30Pa (at 6500m³/h) for DCD50
Water pressure loss: 54kPa (at 5m³/h) for DCD35 / 68kPa (at 7.2kW) for DCD50
Chilled water supply: 15°C
Chilled water return: 21°C
Server supply air temperature: 25°C @35kW for DCD35; @50kW for DCD50
Chilled water volume flow: 5m³/h at 35kW / 7.2m³/h at 50kW
Water connection: 1“ female thread from below (optionally from above)
Condensate drain: 5/8“ (Note: Not for dehumidifying the installation area!)
Absolute humidity/ room air:  max. 8g water per 1 kg of air (others on request)
Dew-point temperature: max. 10.5°C
Material: Sheet steel
Heat exchanger: Copper piping with aluminum lamellas
Color/color code: X: 8 = RAL 7021 (black gray) / 1 = RAL 7035 (light gray)  

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Products Support Contacts

Showing contacts for Virginia, 20149, USA Change
Vertiv (Liebert Services)
+1 800 543 2378
610 Executive Campus Drive Westerville Ohio 43082 USA
Product areas of focus: Uninterruptible Power Supplies (UPS), Power Distribution, Thermal Management, Integrated Solutions, Racks and Containment
Vertiv Academy – Thermal Management Training
+1 844 841 2665
530 Westar Blvd Westerville Ohio 43082 USA
Product areas of focus: Thermal Management
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