Liebert PeX with Digital Scroll

Efficiency And Reliability In A Compact Package

Precision Cooling for Business-Critical Continuity

We Invented Precision Cooling

Emerson Network Power knows precision cooling. After all, we invented it back in 1965! Over the years, our cooling systems have been proven as the world's standard for reliable operation. In fact, there are Liebert precision cooling systems in the field that have been in constant use for over 30 years. Installed in thousands of critical data centers around the world, our latest precision cooling portfolio offers the highest efficiency without compromising reliability.

Understanding the 3 R's of Precision Cooling

Despite the claims of different vendors promoting their own, specialized solutions, there is no silver bullet when it comes to precision cooling for every application. There is only the most appropriate cooling solution for your infrastructure, which may or may not be appropriate for another. An understanding of each cooling design can help determine which cooling approach and solution can best meet your business goals and infrastructure requirements.

Room Cooling

While densities are climbing steadily, low density facilities remain the norm. Traditional room cooling uses precision computer room air conditioners (CRAC) and is the most appropriate solution for these low density environments. The low complexity, ease of deployment and precision humidity and filtration control of these systems has seen hundreds of thousands of units deployed in critical facilities across Asia, with more added every day. Combined with a raised floor, CRACs deliver the best value for money and represents significant increased efficiency over building or comfort cooling.

While room cooling meets the specific needs of a broad market there are times when an alternative approach is required by your business and infrastructure.

Row Cooling

If energy efficiency is top concern, row cooling can improve efficiency over the standard room approach by more than 30 percent. It supports high density applications by the utilization of cold aisle containment. Row cooling with SmartAisle can further improve efficiency and provide uniform and predictable temperature and humidity control to equipment with or without raised floor.

Rack Cooling

One of the proven best practice approaches to dealing high density heat issues is by bringing cooling technologies closer to the source of heat. Specialized precision cooling solutions for racks can support ultra-high-density applications, up to and above 30kW per rack. This dedicated cooling approach specifically cools a rack by providing the best direct air flow intake of the critical equipment.

Regardless of the dimensions of the challenge be it lowering energy usage, reducing space, high densities, or any number of issues in the network and data center environment, trust on Emerson Network Power to match it up with a solution! We have the right cooling approach, technology and product to match your cooling needs. Our full range of cooling solutions are suitable to room, rack and now cooling approaches and can work together to create the most dynamic ultra efficient network possible.

Addressing Efficiency, Density and Availability withEmerson's Precision Cooling Profolio

Room

Rack

Row

Room + (Rack) + (Row)

Rack

0kW 5kW 10kW >30kW

Heat Density

Liebert PEX

Liebert CRV

TMSmart Aisle

Liebert XDUltraEfficiency

Compressors

Co

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lsCondenserFans

EvaporatorFans

200VA

1,850Watts

2,360Watts

10,290Watts

Co

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ors

E

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Co

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Fan

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The Liebert PEX: More Than A Single Energy Efficient component

The efficiency of the Liebert PEX is engineered into the product. Each component thatgoes into the Liebert PEX is carefully tested to ensure that it will contribute to itsoverall efficiency.

All enhancements to energy efficiency are designed to reduce operating time of keycomponents and increase the Mean Time Between Failure.

In addition to having components that are individually engineered to provide the bestefficiency, how these components work and interact with each other also contributeto the energy savings you get with the Liebert PEX.

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When to select Room Cooling

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Low / Medium / High density environments• In room / raised floor

Open architecture• Delivers filtration and humidity control• Thermal Mass minimizes risk of thermal runaway• Low complexity / ease of deployment• Broad capacity range• Redundancy / load sharing• Widest choice of cooling mediums

Suitable for Mega Data Centers• For affordable and realistic redundancy

Energy Efficiency Space Savings Communicationsand Monitoring

System Supervisionand Management

Multiple Configuraton

Digital Scroll

The exclusive Digital scroll compressor on Liebert PeX utilizes the latest technology to deliver precise & significantly high energy efficiency. Emerson Precision Cooling units with Digital scroll technology actively manage achieving capacity modulation from 10 percent to 100 percent.

Copeland digital scroll combines the sturdiness of scroll compressor with capacity of operating with varying load. When the traffic managed by the equipment faces sudden changes, the facility experiences thermal load peaks.

Scalable, the Liebert Digital Scroll automatically adjusts to yearly increases in heat load.

Digital Scroll Features:

< Capacity modulation from 10% to 100%

< Energy Saving with partial load

< Variable capacity compressor can improve efficiency at less than peak capacity / on partload condition

< Quick adjustment with changing load

< Simple & Reliable mechanics

< Reduces power consumption as it modulates

< Eliminates traditional piston and valve that add weight & loss

< Better room temperature control

High Efficiency

Energy Efficiency is the main objective in designing the Liebert PeX DS. The exclusive Digital scroll compressor on Liebert PeX

delivers precise operation & higher EER. Digital scroll compressor provides variable capacity modulation that enables output to

precisely match changing cooling demands. This approach is 30% more efficient than traditional practices.

Improved Energy Efficiency

Loaded State Unloaded State

EC Fans

The innovative energy EC fan technology integrated with continuous speed control across the full operating range provides greatest value to the end user.

The variable speed EC fan achieves wide range of air delivery & static pressure. They ensure correct air distribution even when the facility expands.

EC fan can increase the air delivery to meet the demand of the new installed devices. EC motors feature a consumption of about 30% lower than the one by traditional AC motors.

Features and Benefits

< 30% less energy than average standard AC motor

< Backward curved, corrosion resistant aluminum fan impeller

< Electronically communicated motor, AC to DC conversion

< Direct driven with integrated electronics

< True soft start with inrush current lower than full load current

Infrared Humidifier

Maintaining a proper humidity in a room is as important as maintaining proper temperature. Improper humidity in a room can cause static electricity if it is too dry or condensation if it is too moist. Liebert PeX DS utilizes an integrated humidification system to provide the necessary level of moisture control.

Features & Benefits

< Fast, responsive, energy-efficient humidification

< Full capacity achieved in 5-6 seconds

< Particle free vapour into coil bypass air avoids condensation

< Auto flush cycle removes mineral deposits

< Lamps are not in contact with water

< Water quality has negligible effect on performance

Merging Cooling Technologies

The Liebert PEX becomes the ultimate solution by combing the most reliable cooling technologies in the industry

- The EC fan and Digital Scroll (DS) compressor technology. EC fan plays an integral role in the Liebert PEX by providing effective

capacity control while retaining high energy efficiency and low noise levels. The DS compressor technology in the Liebert PEX

enables superior room condition, humidity and temperature control by adapting to changing heat load and latent conditions.

When you Need Flexibility In Cooling

Proactive Control and Monitoring of Critical Systems

Energy Efficiency with Teamwork Mode

The Liebert iCOM-control system featured on the Liebert PEX brings high-level supervision to multiple units allowing them to work together as a single system to optimize room performance.

Easy Serviceability with Liebert iCOM1 3

Monitors all key system functions and reports to alarm, if needed

Additional Views Available with large Graphic Display

The optional Large Graphic Display features a 320x240 dot matrix backlit screen with helpful system and maintenance views. It allows you to see the average operation of the “system” or all units that are working together in Unit to Unit (U2U) Communication mode for Teamwork or Lead/Lag from a centralized location.

2

Removable display makes servicing easier

Adaptive Monitoring:Increase Availability and Reduce Support Costs

Adaptive monitoring technologies allow easy information maneuverability to key resources, whether you need to integrate critical system data with your Network Management System, Building Management System or enable a Web browser interface.

Liebert's monitoring technology puts critical puts critical systems information at the fingertips of support personal - wherever they are - addressing the increasing concern for improved internal communication between management groups surrounding a data center.

Ensuring Availability

Trim Down the Power Consumption

Key Benefits Of Liebert PeXDS:

< Secure your IT investment:

With Digital Scroll achieve moreperformance at a greater value formoney, reducing energy demand.

< Just-in-time Cooling:

Digital Scroll deliver adaptive coolingflow, heavily depending on the heat loadvariations to always keep the precisetemperature level.

< Scalability and Efficiency:

Increasing dimension of your datacenteror higher density will not force you tofurther investment: the unit can in factadapt its performance to your growingdatacenter accordingly.

< Unique technology:

For competitive advantages withoutcomparison: never ending protection forthe IT infrastructure with the maximumenergy saving.

Dynamic Capacity Cooling Technology

Managed by the iCOM control system, the combination of these technologies not only provides precise temperature control but

also provides relative humidity control without initially resorting to dehumidifying or humidifying. It helps lower operating costs

and reduces energy consumption by as much as 30 percent, compared to standard cooling solutions.

Liebert PeXDS- The Advanced Cooling Technology

100000

150000

200000

250000

300000

350000

400000

450000

500000

Standard Unit Liebert PeXDS

Energy AnalysisO

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Co

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SavingUpto 30%

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EC Fan Effect

Higher Motor Efficiency

Humidifier Effect

SHR=1, means No Need to Run Humidifier

COP & SHR Effect

Liebert PeX DS has higherCOP & SHR

At 24°C, 50% RHCost at Rs. 6/kWh

Example: A 25kW Unit Working At 60% of Heat Load

SummaryEnergy Efficiency

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Digital Scroll Compressor forhighest efficiency

Infrared Humidifier for precisehumidity control

iCOM controller for optimizedroom performance

Communications and Monitoring

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Teamwork Mode allows units towork together in rooms withunbalanced loads

Unit diary shares history with anyauthorized users or service contacts

Space Savings

< 15% more kW per square metercompared to industry average

< Requires nothing more than directfrom access

System Supervision and Management

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<

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Enhanced remote communicationsand control with Liebert Intellislot card

Centralized Management withLiebert Nforms software

Enterprise Management withLiebert SiteScan Web Software

Multiple Configurations

<

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Seven different configurations forUpflow and Downflow units

Configure for your specific needs

Liebert PEX: Energy Efficient Room Cooling Solution

Liebert PEX is the most accessible for the broadest range of business needs. It

represents a straight forward and effective solution to the majority of low to

medium density applications. It reliably services the thermal requirements of

critical data center equipment.

The solution requires nothing more than direct front access for installation and

routine servicing. This means that users can achieve 100% space utilization

around the unit and not suffer dead space caused by service access requirements

on the sides and rear.

Space Optimization

Liebert PeX DS Technical Specifications

Note:1. Gross capacity based on 45°C saturated condensing temperature, 25Pa ESP.2. Technical data subject to change without prior notice due to continuos product development.

Technical Specifications Liebert PeX DS Downflow Units

Model Size 120 125 135 240 245 250 270

Rated Unit Performance R22-kW

24°C DB, 17.1°C WB, 50% RH

Total 19.2 22.8 34.8 39.4 46.4 53.2 70.9

Sensible 19.0 22.6 29.6 38.4 45.6 48.2 59.6

24°C DB, 16.4°C WB, 45% RH

Total 19.6 23.2 34.4 39.8 46.9 51.5 69.0

Sensible 19.5 23.0 31.9 39.5 46.6 51.1 63.5

Rated Unit Performance R407C-kW

24°C DB,17.1°C WB, 50% RH

Total 21.9 24.9 37.2 43.9 50.1 56.8 74.6

Sensible 19.7 23.1 29.7 39.4 46.2 48.9 59.2

24°C DB,16.4°C WB, 45% RH

Total 20.8 24.3 36.2 42.1 48.9 55.0 73.1

Sensible 20.6 24.1 31.6 41.8 48.6 52.1 63.1

Compressor Type Digital Digital Digital Digital Digital Digital DigitalScroll Scroll Scroll Scroll Scroll Scroll Scroll

Qty 1 1 1 2 2 2 2

Fan Type Backward Backward Backward Backward Backward Backward Backward

Curved EC Fan Curved EC Fan Curved EC Fan Curved EC Fan Curved EC Fan Curved EC Fan Curved EC Fan

Qty 1 1 1 2 2 2 2

Air Flow (CFM) 3800-4800 7500-9350

Unit Dimensions- mm

Width 850 850 850 1700 1700 1700 1700

Depth 850 850 850 850 850 850 850

Height 1950 1950 1950 1950 1950 1950 1950

Unit Weight- Kg 296 299 328 512 516 551 577

Technical Specifications Liebert PeX DS Upflow Units

Model Size 120 125 135 240 245 250 270

Rated Unit Performance R22-kW

24°C DB, 17.1°C WB, 50% RH

Total 19.2 22.9 34.7 39.4 46.0 52.4 70.0

Sensible 19.0 22.2 29.0 38.4 44.4 46.9 58.0

24°C DB, 16.4°C WB, 45% RH

Total 19.6 22.9 34.4 39.8 46.4 51.0 68.9

Sensible 19.5 22.7 31.2 39.5 46.1 50.2 62.1

Rated Unit Performance R407C-kW

24°C DB,17.1°C WB, 50% RH

Total 21.9 24.9 37.2 43.9 50.0 56.1 74.4

Sensible 19.7 22.6 29.2 39.4 45.1 47.6 57.9

24°C DB,16.4°C WB, 45% RH

Total 20.8 23.9 36.2 42.1 47.9 55.0 72.0

Sensible 20.6 23.7 30.9 41.8 47.5 50.9 61.3

Compressor Type Digital Digital Digital Digital Digital Digital DigitalScroll Scroll Scroll Scroll Scroll Scroll Scroll

Qty 1 1 1 2 2 2 2

Fan Type Backward Backward Backward Backward Backward Backward Backward

Curved EC Fan Curved EC Fan Curved EC Fan Curved EC Fan Curved EC Fan Curved EC Fan Curved EC Fan

Qty 1 1 1 2 2 2 2

Air Flow (CFM) 3800-4500 7500-9000

Unit Dimensions- mm

Width 850 850 850 1700 1700 1700 1700

Depth 850 850 850 850 850 850 850

Height 1950 1950 1950 1950 1950 1950 1950

Unit Weight- Kg 283 286 315 490 494 529 555

POWER PROTECTION

INBOUND POWER

Transfer Switch

Surge SuppressionDC POWER SYSTEMS AC POWER SYSTEMS

EMBEDDED POWER & COOLING

Power Units

DC/DC Converter DC/DC Converter

AC/DC Supplies

Micro-Cooling Technology

Power Conversion UnitsControl & Monitoring

DC-DC ConvertersDC Distribution & Batteries

PreventiveMaintenance Telecom

Critical Space

Self-Monitoring Technology

24/7 Remote Monitoring Services

INBOUND POWER

Utility AC Generator

Precision CoolingIntegratedCabinet ServicesOutside Plant

UPSAC PowerDistribution

High Density Cooling System Technical Control Room

ServicesMonitoring

Connectors &Wireless Structures

EF&I

Network & Server Rack Integrated Outdoor Shelters

Emerson Network Power.

While every precaution has been taken to ensure accuracy and completeness in this brochure, Emerson Network Power assumes no responsibility, and disclaims all liability for damages resulting from use of this information or for any errors or omissions.

Emerson Network Power and the Emerson Network Power logo are trademarks and service marks of Emerson Electric Co. © 2010 Emerson Electric Co.

TMThe global leader in enabling Business-Critical Continuity .

Outside Plant

Power Switching & Controls

Precision Cooling

Racks & Integrated Cabinets

Services

Surge Protection

Embedded Computing

Embedded Power

Monitoring

AC Power

Connectivity

DC Power

Voice of Customers UPS Awards 2004-05 for Product Line& Customer Service Awards in IT, Telecom,

Large Enterprise & Hospitals andCustomer Service Leadership Award in BFSI

Best IT Hardware CompanyMaharashtra IT Award 2006-07

2007R

www.emersonnetworkpower.co.in

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Note: Specifications & Features may vary based on the condition.