Precision Cooling
for Business-Critical Continuity
Liebert PeX with Chilled Water unit
Efficiency And Reliability In A Compact Package
Cooling Solutions For
Critical Applications
As The Temperature
Rises, So Does Your
Risk
Emerson Network Power, is the global leader in the “Business-Critical –
Continuity” thanks to its product and services.
Emerson Network Power, a division of Emerson Electric, brings world
class Precision Cooling Solution. These tailored solutions are best suited
for IT/ITes/Retail/Govt. & many other verticals.
Precision Cooling is a key requirement to ensure safe workingconditions
to datacenters, computer rooms and other equipment that simultaneously
needs a high sensible heat discharge and a precise temperature and
humidity control.
The Ability To Tailor A
Solution Is What Sets
Emerson Network
Power Apart
Every operation of your company depends upon the instant around-the
clock availability of computers, servers and other electronic system. If
they aren't working, neither is your company.
Unfortunately every piece of this equipment your company possesses
produces heat. And if you don't get rid of the heat, you are going to have
problems.
The first step in taking control of the situation is to understand the threats
to your system reliability and exactly what you can do about them.
From high-capacity units to compact above ceiling systems, there
is a Liebert system designed to cool and protect your Critical systems.
We make the industry's widest range of precision environmental control,
including air conditioners, fluid chillers and heat rejection systems in
capacities from 1 to more than 65 tonnes. These systems are available
with a choice of cooling methods, including chilled water, air cooled and
glycol models, as well as ultra energy efficient Glycool and Dual Cool
configurations. We also offer specialized systems, including exterior
mounted air conditioning for telecommunication enclosures supplemental
cooling for high density electronics applications and cost effective
steam humidifier
2
Introducing PeX Global
with Chilled Water unit
Applications
Telecommunication Facilities
Electronic Switch rooms
Industrial Process Control Rooms
Motor Control Rooms
Broadcast Facilities
Building services control Rooms
Surveillance and Monitoring Centres
Medical Equipment Installations
Features and Benefits
of Liebert PeX- CW
Energy Efficiency:
Infrared humidifier for precise and instant humidity control.
iCom controller for optimized room performance.
EC Fan for optimum EER efficiency.
Space Saving:
18% more kW per square meter compared to industry average.
Units can be dismantled and reassembled for difficult site jobs.
Requires nothing more than front access.
Communication and Monitoring:
Teamwork mode allows units to work together in rooms with
unbalanced loads.
Unit diary shares history with authorized users and service
contacts .
System Supervision and Management:
Enhanced remote communication and control : with Liebert
Intellislot card.
Centralised management : with Liebert Nform software.
Enterprise management: with Liebert site scan web software.
3
Why Energy Efficiency ?
Cooling System Consumes 35% to 40% of Datacenter Energy
Energy Efficiency
More Critical Than
Ever
Each component in Liebert
PeX unit is designed,
manufactured and tested to
ensure that it will contribute
to its overall efficiency
Datacenter is composed of many types of equipment. Cooling unit
consumes near about 35% of energy.
The equipment also generates heat that need to be taken out. More
the equipment more is the cooling required.
So energy efficiency in datacenter becomes a top priority.
Energy Consumption in Datacenter
Continuous speed control across the full operating range.
Boosting Energy
Efficiency through
EC Fan
Benefits of EC Fan
Reduced energy usage & low operating cost, providing faster
payback period.
High efficiency across the full operating range.
No transmission losses through belts & pulleys.
Adjustable fan speed, so easy adaptable to changing load conditions.
Low noise, vibration free operation.
Integral overload protection.
Integrated electronics so no need of secondary electronics.
Rotating parts are fitted to one sub assembly.
4
Total weight is distributed to both bearings evenly.
Innovation
Emerson Network Power is committed to engineer the most Energy Efficient
product. As a result of which, our engineering team developed a better way for EC
fan to operate by reducing system losses.i.e A PeX Chilled Water model with under
floor EC Fan .
Under floor placement of the fans provide a direct path for the air to travel through
the cabinet. Thus the fans operate effectively.
Emerson is the only manufacturer to bring under floor EC fan technology.
Energy saving
Energy Saving
Through under floor EC fan
Liebert PeX CW units feature an 'in floor' fan configuration to deliver the ultimate
energy efficiency. Mounting EC fan in the raised floor under the unit is more
efficient than mounting inside.
Energy Analysis
Centrifugal
blowers in unit
EC fan in unit
EC fan in floor
• 3motorized
• 3motorized
blowers in
unit
• Belt drive
impeller in
unit
• Directdrive
impeller
under floor
• Directdrive
% Power Consumption
• 3centrifugal
Saving
100
90
80
70
60
50
40
30
20
10
0
Centrifugal blowers in
unit
EC fan in
unit
EC fan in floor
5
Components for Efficiency
The Liebert PeX:
More Than A Single
Energy Efficient
Component
Designed to reduce
operating time of key
components and increase
MTBF
Key Features Contributing To The Superior Efficiency Of Liebert PeX
iCOM Controller
The Liebert iCom control system offers
highest capabilities of unit control,
communication and monitoring of
Liebert mission-critical units.
EC Fan
High efficienc y, ex ternal rotor,
Electronically Commutated motor with
integrated electronics
Down flow chilled water units feature
an ‘in-floor’ fan configuration to deliver
the ultimate energy efficiency. Fans
are lowered into the floor after unit
positioning on site.
Infrared Humidifier
6
The infrared humidifier has a rapid
response and cleanliness has made it
an industry standard in applications
that demand precise and particle free
humidity control.
Unique In-Floor Fan Configuration
Components for Efficiency
Space Saving
Space efficient, whole life
design gives savings on
real estate costs and allows
for easier serviceability
Key Features For Space Optimization
18% more kW per square meter compared to industry average.
Liebert PeX requires nothing more than direct front access.
Units can be dismantled and reassembled for difficult job sites.
Competitor 1
Competitor 2
PeX Global
Total Width 2170 mm
Total Width 1000 mm
Total Width 853 mm
Total Depth 870 mm
Total Depth
Total Depth 874 mm
900 mm
Service Area
Service Area
1000mm (Front)
1000mm (Front)
Service Area
850mm (Front)
Considering both unit size and required service access area, the
Liebert PeX offers the best return on the investment you make on
your datacenter space
Proactive Control And
Monitoring Of Critical
Systems
High-level supervision to
multiple units with Liebert
iCom control system
iCOM- Intelligent Communication & Monitoring
The Liebert iCom control system offers the highest capabilities of unit
control, communication & monitoring of Liebert mission critical cooling
units.
Teamwork mode : allows unit to work together in unbalanced loads.
: allows speedy identification of parts.
Spare part list
7
Components for Efficiency
System Supervision
And Management
Critical systems
management speeds
emergency response and
supports preventive
maintenance
Distributed Management with Liebert Intellislot Interface cards
For enhanced remote communication and control of Liebert units, the
Liebert IntellislotWeb and 485 cards deliver the required communication
capabilities.
Monitoring and Control through your existing network with no additional
software required.
Allowing remote monitoring from desktop, network operations centre Without
the need of front end software
Centralized Management with Liebert Nforms Software
Liebert Nform leverages the network connectivity capabilities of Liebert
equipment to provide centralized monitoring view of your distributed
equipment.
Utilizing the SNMP and Web technologies built into each of the Liebert Intellislot
communication cards, Liebert Nform centrally manages alarm notifications to
provide with an easy interface to access critical status information.
OpenComms Nform
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Site Scan Web
Components for Efficiency
Optimal Cooling
Configuration:
CW Model capacity Range:
The Liebert PeX
EC with chilled water unit
Cooling Options:
Available from 20KW to 150kW
The Liebert PeX EC with chilled water available with:
Up flow,
Down flow
Ducted Units
Liebert PeX EC chilled
water with upflow unit
Liebert PeX EC chilled
water with downflow unit
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Liebert PeX Features
Summary
Energy saving with
under floor EC Fan
compared to inside unit
Direct path for air to travel through cabinet
Low energy consumption
Low operating cost
High energy efficiency
ratio
High net sensible cooling
capacity
Low annual operating cost
Useful Energy Saving
Tips
Reduce energy waste
a. Improve vapor barrier-unnecessary humidification/ dehumidification
b. Reduce solar heat gain; air leakages in the room, under-floor and
ceiling
Optimize airflow
a.
b.
c.
d.
e.
Reduce airflow restrictions under the floor
Arrange racks in hot-aisle/cold aisle configuration
Reduce air recirculation using blanking plates where appropriate
Place cooling unit at the end of the hot aisle
Use ducts to return hot air to the cooling unit
Use optimal set points
a. Adjust proper cold aisle temperature set point.
b. Raise the chilled water temperature above 7°C
ASHRAE guide line books available
Thermal assessment can help jump start the process
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Liebert PeX CW
Specifications
Technical Specifications PeX CW Downflow Units
PeX Downflow units
Model Size
1020
1030
1040
2050
2070
Chilled Water 50 Hz
2090
3110
3140
24°C DB,17.1 WB, 50% RH
Total
Sensible
28.8
23.1
35.5
29.9
45.5
35.3
60.9
47.7
76.9
62.8
97.6
74
116.8
95
150.5
112.7
24°C DB,16.3 WB, 45% RH
Total
Sensible
25.4
23.4
31.5
30.5
40.6
35.7
54.2
48.3
67.9
64
87.2
74.8
103.1
96.7
134.7
113.9
Fan Section
- CFM
Airflow
3450
4900
4900
6800
9900
9900
14750
14750
Width (mm)
Depth (mm)
Height (mm)
853
874
1970
853
874
1970
853
874
1970
1704
874
1970
1704
874
1970
1704
874
1970
2553
874
1970
2553
874
1970
Weight (kg)
260
260
270
480
480
500
730
760
1020
1030
2050
Chilled Water 50Hz
2070
3080
3110
-
-
24°C DB,17.1 WB, 50% RH
Total
Sensible
27.8
22.3
35.1
29.4
59.2
45.9
74.8
60.8
89.3
69.4
113.5
91.9
-
-
24°C DB,16.3 WB, 45% RH
Total
Sensible
24.6
22.6
30.9
30
52.5
46.5
66.5
61.9
79.5
70.2
101
93.5
-
-
3300
4800
6500
9500
9800
14100
-
-
Width (mm)
Depth (mm)
Height (mm)
853
874
1970
853
874
1970
1704
874
1970
1704
874
1970
2553
874
1970
2553
874
1970
-
-
Weight (kg)
260
260
480
480
730
760
-
-
Rated Unit Performance Downflow- kW
Unit dimensions and Weight -
Technical Specifications PeX CW Upflow Units
PeX Upflow units
Model Size
Rated Unit Performance Upflow- kW
Fan Section - CFM
Airflow
Unit dimensions and Weight
Liebert PeX CW available with high CFM units.
Note :
1) All capacities are nominal values.Gross capacities based on 25Pa ESP.
2) Calculations are based on 7°C EWT & 12.5°C LWT.
3) Technical data subject to change with out prior notice due to continuous product development.
11
Country Office
Emerson Network Power (India) Private Ltd.
Plot No. C-20, Road No. 19, Wagle Estate,
Thane (w), Maharashtra - 400 604. India.
Tel.: 91-22-67208000
Fax: 91-22-25828358
Toll Free No 18002096070
Email: marketing.india@emerson.com
Voice of Customers UPS Awards 2006-07 for Product Line
& Customer Service Awards in IT, Telecom,
Large Enterprise & Hospitals and
Customer Service Leadership Award in BFSI
2007
R
Best IT Hardware Company
Maharashtra IT Award 2006-07
www.emersonnetworkpower.co.in
Emerson Network Power.
The global leader in enabling Business-Critical ContinuityTM.
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Connectivity
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Monitoring
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Racks & Integrated Cabinets
Services
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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. © 2009 Emerson Electric Co.
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