Emerson Network Power Liebert CRV Row-Based Cooling Solution

Liebert 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.

• Variable 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 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.

Control

• 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.

Monitoring

• 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   

FEATURES	BENEFITS
Flexibility	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

• Download Liebert Precision Cooling Overview Brochure
• Download Liebert CRV Row-Based Cooling Solution Datasheet
• Download Liebert CRV Row-Based Cooling Solution Brochure
• Download Liebert CRV Row-Based Cooling Solution Installation Operations & Maintenance Manual