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DA265, 265 kW

The Liebert® DSE DA265, 265 kW provides new levels of performance for colocation and cloud hosting facilities, with rapid deployment, low cost of ownership, high energy efficiency and low peak power. The system is ideal for raised and non-raised floor data centers. Its pumped refrigerant economizer uses no water and requires no outside air into the data center. A packaged condenser and refrigerant pump can be rooftop mounted, making it ideal for multi-story buildings.

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Key Benefits
Highly efficient, with PUEs under 1.20
Low total cost of ownership
Maximum economization hours across the widest temperature range
Elimination of outside air contamination
Smooth transitions between economization phases
Best Suited For:
  • Data Center/Colocation/Hosting
  • Education
  • Government
  • Healthcare
  • Retail and Wholesale
  • Telecom
Warranty: One Year Limited Warranty Against Defects in Material and Workmanship

Benefits

Saves You Money
High-efficiency pumped refrigerant economizer uses less than one-tenth the power of compressors
Annual operational PUE under 1.2
Eliminates water usage, cost, and treatment
Large condenser surface are minimizes operating and peak power to minimize generator backup or free up additional saleable IT power.
No air leakage or volumetric displacement, eliminating the need for additional fan power or make-up air capacity
Rapidly scalable for faster deployment and time to market
Low operating costs for higher profitability. Higly efficient in low load / part load conditions 
Lower Your Risks
Proven pumped refrigerant economization technology used in more than 4,000 to 8,500 installations worldwide
Multiple fans, DX circuits and other key components for ride-through
No air dampers or louvers to maintain
 Airflow up to 37,000 CFM supports lower delta-T in non-raised floor environments.
Supports large, high-density data center suites requiring a low-complexity infrastructure.
No outside air, contaminants or humidity allowed into the data center
Simplified Thermal Management
Advanced monitoring and control algorithms for multi-unit teamwork, automated transitions to economization and automated protection routines for unit lead/lag, coil freeze, and others
Rear-access servicing means no need for mechanical service in the data center
Refrigerant pump is vitually maintenance free
No dampers to service or outside air filters to replace 

Features

Pumped Refrigerant Economizer
Advanced Thermal Controls
Microchannel Condenser
Independent Thermal System Design
 50-265kW capacities
 Downflow configurations (50 - 265 kW)
Upflow configurations (80 - 85 kW)
 
 

The Liebert® DSE in 265kW capacity is a free cooling economization system with backup DX compressor, which achieves the high efficiency without using water. The system can achieve an annual operational PUE under 1.2., while eliminating water usage, cost and treatment. Its large condenser surface area minimizes operating and peak power to minimize generator backup or free up additional saleable IT power. Unlike heat wheels, it has no air leakage or volumetric displacement, eliminating the need for additional fan power or make-up air capacity. As a self-contained solution, Liebert® DSE system is highly scalable for fast deployment and time to market. The Liebert® DSE 265kW is comprised of a packaged pumped refrigerant economizer and a micro-channel condenser, plus an indoor CRAC unit. The system operates in free cooling or partial free cooling mode, depending upon outdoor temperatures. When criteria for economization are met, the compressors turn off and the refrigerant pump turns on to move the refrigerant through the system to reject the heat of the data center, using only a fraction of the power of a compressor. Automated economization, controlled by the advanced Liebert® iCOM™ control, maximizes the number of free cooling hours by enabling economization whenever conditions warrant, including evening and night-time hours. It also eliminates the use of water. The Liebert® DSE system was recently approved by the State of California as a prescriptive option for economization under Title 24. Additionally, the system protects against outside air contamination and reduces system wear and tear by eliminating air dampers and louvers. Air-cooled free-cooling system with water-free economization, a rapidly deployable configuration and advanced Liebert® iCOM™ thermal controls to optimize each unit and harmonize the operation of multiple units for temperature and airflow.

Air-cooled free-cooling system with water-free economization, a rapidly deployable configuration and advanced Liebert® iCOM™ thermal controls to optimize each unit and harmonize the operation of multiple units for temperature and airflow. Highly scalable and modular design accommodates changing IT loads and is ideal for upgrading outdated or inefficient cooling systems.

DA265, 265 kW
Product Specifications
Total Nominal Capacity kBtuh [kW]
905 [265]
Net Sensible Capacity kBtuh [kW]
905 [265]
Nominal Airflow [CFM]
36,500
Total Capacity
853 [265]
Net Sensible Capacity
853 [265]
Nominal Airflow
36,500
Airflow Direction
Front or Bottom Discharge
Heat Rejection Medium
Refrigerant
Controls and Monitoring
Liebert® iCOM™ unit controls
Key Components
CRAC, Packaged Condenser/Refrigerant Pump
Physical Characteristics
Weight
6455 lb
Weight
2928 kg
Height
134 1/8 in
Height
3406 mm
Width
120 1/8 in
Width
3051 mm
Depth
83 1/2 in
Depth
2122 mm

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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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