Cooling System employs adaptive condenser system.

Press Release Summary:

Available in 53, 70, 77, and 105 kW downflow units, Liebert DS system controls temperature, air quality, and humidity in areas such as data centers and computer rooms. It uses digital scroll compressors and Liebert Paradenser(TM), which can be installed using traditional refrigerants and transitioned to green refrigerants with no loss in capacity. Also included, iCOM(TM) control system enables inter-unit coordination and provides diagnostics and service capabilities.

Original Press Release:

Emerson Network Power Expands and Enhances Liebert DS Line With Four New Models and Adaptive Condenser System

Leading Data Center Cooling System Now Available in Sizes up to 105 kW with Patented Green-Ready Condenser

COLUMBUS, Ohio, [December 6, 2005] - Emerson Network Power today announced four new models of the Liebert DS system and a new condenser system for the Liebert DS that eliminates the performance penalties associated with switching to green refrigerants. The Liebert DS, a precision cooling system used to control temperature, air quality and humidity in controlled environments such as data centers and computer rooms, is the only precision cooling system to use digital scroll compressors to achieve unprecedented reliability, adaptability and efficiency.

The new models extend the Liebert DS product line to include 53 kW, 70 kW, 77 kW and 105 kW downflow units. With the new Liebert ParadenserTM the Liebert DS can be installed using traditional refrigerants and later transitioned to green refrigerants with no loss in capacity. Traditional condenser systems lose as much as 15% of capacity when converting to green refrigerants.

"The day is coming when green refrigerants must be employed in the field" said Ron Spangler, product manager for the Liebert DS. "Many organizations want to standardize on green refrigerants today or they want a simple way to retrofit in the field with minimal performance impact. The new Liebert ParadenserTM will make that conversion possible, while maintaining the serviceability and reliability that our customers expect."

The Liebert DS system also features the award-winning iCOMTM control system that enables increased inter-unit coordination and provides advanced diagnostics and service capabilities. A new blower drive system also significantly reduces maintenance. The system includes a 5-year belt, permanently lubricated 200,000 hour bearings, and an auto-tensioning motor base that eliminates the need for manually tightening the belts.

For more information on the Liebert DS visit or call 1-800-877-9222.

About Emerson Network Power

Emerson Network Power, an Emerson business, is the global leader in enabling Business-Critical Continuity, providing a full spectrum of reliable power, connectivity and precision cooling solutions for computer, communications, healthcare and industrial systems, backed by the largest global services organization in the power industry. Recognized product brands within the Emerson Network Power family include Liebert, ASCO, Astec, and Lorain. For more information on Liebert mission-critical power and cooling technology visit For more information on the full range of technology solutions from Emerson Network Power, visit

About Emerson

St. Louis-based Emerson ( is a global leader in bringing technology and engineering together to provide innovative solutions to customers in electronics and telecommunications; process control; industrial automation; heating, ventilating and air conditioning; and appliance and tools. Sales in fiscal 2004 were $15.6 billion.

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