Liebert-CRV-Row-Based-Cooling-SolutionLiebert CRV Row-Based Cooling Solutions are self-contained precision cooling systems that install within a row of data center racks—close to the server heat source—for the most efficient cooling of critical IT equipment.

The rack-sized Liebert CRV provides high capacity cooling in a small footprint and features the Liebert iCOM Control System that modulates unit performance in real-time, based on conditions in the row. Monitoring up to 10 racks with 20 sensors, the Liebert CRV precisely controls air temperature, humidity and filtration in the surrounding racks.

  • Liebert CRV In Row Cooling SolutionVariable EC Fans regulate airflow and reduce the fan input power; resulting in up to 50% less power used by the fans compared to traditional perimeter cooling.
  • High Performance Air Filters are easily accessed through the back of the unit.
  • Digital Scroll Compressor enables the variable cooling capacity to precisely match changing cooling demand without cycling on and off, reducing energy consumption and extending compressor life.
  • Liebert iCOM® Control presents up to 11 temperature measurements and unit performance in an easy to understand graphical summary.
  • 2T Rack Sensors provide two temperature readings per rack to ensure the proper amount of cold air is provided to eliminate hot spots.
  • Adjustable Baffles direct airflow right, left or both directions, allowing you to easily change the airflow distribution as your cooling needs change.
  • Blue-tinted hydrophilic cooling coil disburses water quickly, preventing carryover of water into the cold aisle.
  • R-410A Refrigerant is environmentally friendly and meets the latest government standards.
  • Liebert IntelliSlot™ Communication Cards can be accessed without entering the high voltage panel and allow the system to communicate with remote infrastructure management systems.

Liebert-iCOM-ControlsLiebert iCOM Controls: Optimized Performance, Reliability, and Efficiency

The Liebert iCOM control system provides advanced control and monitoring capabilities to Liebert CRV units, allowing up to 32 cooling units to work together as a single system to optimize room performance and improve energy efficiency. Liebert iCOM controls offer a variety of advantages, including icon-based navigation, adjustable control algorithms, and data center monitoring capabilities.


  • Advanced control algorithms allow the airflow and cooling to be modulated independently, eliminating excessive operations.
  • Temperature sensors attached to server racks allow the optimal amount of air and cooling to be provided without any increased risk for hot spots.
  • Multiple Liebert CRV units communicate with each other to optimize system performance while reducing noise and airflow, to provide a work-friendly environment.
  • Six control modes of operation allow the Liebert CRV to be customized for any application.


  • Six selectable status screens allow you to customize how system information is presented.
  • Up to 20 rack temperatures may be summarized using bar graphs or a drawing of the data center on the local display, or all data may be reported remotely, providing users with a built-in mini-monitoring system.
  • All unit information may be reported remotely through a variety of protocols, including HTTP, SNMP, and RS-485 Modbus.

Predictive Wellness/Maintenance

  • Enhances reliability with predictive analysis of components and performance – advance notice allows proactive management of system maintenance.
  • Event logs store the last 400 messages to enrich unit history and enhance support.

Service and Spare Parts History

  • On-board service history allows prompt access to records for service personnel.
  • On-board spare parts list provides convenient identification of the appropriate unit spare parts and part numbers for faster service and support.

Features & Benefits   

  • Available in nominal capacities from 20kW to 40kW
  • Automatically balances the airflow and cooling capacity based on the needs of the space
  • Horizontal airflow cooling design is suitable for non-raised or raised floors
  • Air, water, glycol, and chilled water systems available
  • Adjustable supply air baffles maximize cooling to rack equipment by directing the airflow leaving the unit towards the servers
  • Caster mounted for easy placement
High Availability
  • Self-adapts to changing conditions to provide 24/7 precision environmental control: cooling, humidity control and air filtration
  • Liebert iCOM control provides alerts for preventive maintenance before issues occur
  • Variable capacity Digital Scroll compressor adapts to load and eliminates compressor cycling, greatly increasing compressor life
Lowest Total Cost of Ownership
  • Designed for higher return air temperature to maximize cooling capacity and increase efficiency
  • Only front and back access required, resulting in minimized installation and service time
  • Compact cabinet with high cooling capacity minimizes floor space requirements
  • Easy to install and maintain – only front and back access required
  • Digital scroll compressor and variable speed EC fans operate efficiently and provide a long service life

Ideally Suited For:

  • Small to medium-sized data centers
    • From 2 to 24 racks
    • Optimal for cold/hot aisle configurations
  • Heat density up to 10 kW/rack without containment
  • Rows of racks in hot aisle / cold aisle communicate with each other, allowing them to work together as a team to enhance their performance
  • Rack equipment with higher than average density, or a mix of densities
  • Spot cooling
  • Supporting capacity of existing raised floor cooling units