Trane®

CenTraVac®
Chillers
Best in class efficiency
CenTraVac meets today’s efficiency
and sustainability challenges
Buildings account for nearly 40 percent of the total energy consumption in the United States, and 38 percent of
carbon dioxide emissions.1 As much as 50 percent of energy used by commercial buildings is attributable to HVAC
systems.2 Globally, there is a focus on changing heating and cooling practices to improve efficiency, optimize the
use of natural resources and protect the environment we live in.

Building owners, engineers and architects are searching to minimize both immediate and long-term environmental
impact. Trane® is committed to helping achieve this through cooling systems that are highly efficient and offer
environmental advantages. That is good news for the environment and your business.

Trane CenTraVac® centrifugal chillers provide the lowest possible cooling costs, while delivering environmental
benefits that are so significant they have earned awards from the Environmental Protection Agency — three times.

A leader from the start

Trane has been the leader in chiller
innovation since 1938. Decade after
decade, CenTraVac technology has
advanced to meet a variety of challenges,
and we will continue to lead the industry
into the next generation of cooling.

Most efficient
Today’s CenTraVac delivers the industry’s
highest full- and part-load efficiency, as
low as 0.478 kW/ton full-load and 0.296
kW/ton IPLV at standard AHRI conditions.

CenTraVac is ideally suited for a wide

range of cooling applications, and is
the only chiller capable of sustaining
operating temperatures down to 34°F,
without energy-robbing anti-freeze.

Right from the start, Trane fundamentally changed the way large buildings
are air-conditioned with the 1938 introduction of Turbovac™ — the world’s
first direct drive, hermetic, multi-stage centrifugal water chiller.

2
Performance And because CenTraVac chillers require only simplified
Studies clearly show that positive bottom lines for maintenance to achieve years of consistent, peak
large tonnage chiller plants focus on the use of full- productivity, they will deliver greater financial benefits.
load efficiency ratings, not IPLV/NPLV.3 Optimum
Environmentally considerate
system performance can only be determined through
analysis that considers a wide range of variables from As part of the EcoWise portfolio of products, CenTraVac
hour-by-hour analysis to chiller plant performance chillers are capable of utilizing next-generation
characteristics.4 Simple tools such as the myPLV ™ refrigerants with a Global Warming Potential (GWP)
are available to help quickly estimate future chiller value of less than 2 — among the lowest in the industry.
performance based on project-specific conditions In addition, semi-hermetic compressors, along with low-
that include location and building type, building load, pressure refrigerant, produce the ultra-low refrigerant
number and size of the chillers in the plant, chiller emission rate of less than 0.5 percent annually.
condenser control strategy and more.
And if every chiller could operate at CenTraVac’s 0.45
Based on Trane calculations, CenTraVac efficiency kW/ton efficiency, power plant–generated greenhouse
levels can produce energy-related cost savings gas emissions would be reduced by more than 19 billion
equivalent to an investment that provides an annual pounds of CO2, 72 billion grams of SO2 and 30 billion
ROI of better than 30 percent. grams of NO X over the life of the chiller.

Most reliable
Through simplicity in design, Trane centrifugal
compressors achieve the industry’s highest design
reliability rating of 99.7 percent.5 CenTraVac is capable
of sustaining the precise temperatures at extremely 1. U.S. Environmental Protection Agency, “Why Build Green?” http://www.epa.
tight tolerances that are key to occupant comfort and gov/greenbuilding/pubs/whybuild.htm (accessed August 23, 2010).
2. U.S. Department of Energy.
crucial to many demanding mission-critical processes. 3. W . Ryan Geister and Mike Thompson, “A Closer Look At Chiller Ratings,”
Built to last for decades — with some chillers operating ASHRAE Journal, (December 2009).
4. W. Ryan Geister, Mike Thompson and Justin Wieman, “Chiller Plant Ratings:
for more than 50 years — and with the industry’s Why the Proper Evaluation Method Matters,” District Energy magazine,
(Fourth Quarter 2010).
fewest moving components, CenTraVac excels even
5. C alculated according to the ASHRAE Applications Handbook “Operations
in the most challenging cooling applications. and Maintenance Management.”

Balanced approach
CenTraVac chillers take a balanced approach to
multifaceted cooling challenges. Design simplicity,
thoughtful refrigerant selection and innovation driven
by time-tested engineering principles make CenTraVac
the most reliable, cost-effective, energy-efficient and
sustainable chillers on the market today.

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Built for a long and quiet chiller life
CenTraVac® chillers are a lesson in rugged
simplicity. Direct-drive, centrifugal chillers by
Trane® are built without speed-increasing gears
and shaft seals, which are both prone to failure
and require constant attention to maintain.

Technology inspires continuous innovation, and

hundreds of patents have been registered under
the Trane name. Still, “reliability by design” remains
the core philosophy behind every CenTraVac chiller.

Each CenTraVac chiller is custom-built individually,

following rigorous quality control processes. Before
a CenTraVac leaves our manufacturing facility, you
as a Trane customer can take advantage of our
fully customizable portfolio of myTest™ chiller test
packages and proof-of-performance options. We
invite you to witness all testing before your chiller
ships — either in person at our La Crosse, Wisconsin,
factory or remotely from the comfort of your office.

CenTraVac chillers stand up to rigorous industrial and commercial requirements

• Robust design reduces downtime for manufacturing operations,

where minutes of lost production time cost dollars in lost revenue.
In addition, uninterruptable power can be fed to the controller
and the purge, so that critical monitoring functions can continue
despite a loss of main power.
• Superior HVAC system efficiency (made possible by an unequalled
34°F sustainable operating temperature without glycol) reduces
energy costs for district cooling applications such as office
campuses, airports and universities.
• Integrated controls deliver precision cooling and humidity
management for applications that demand uncompromising
conditions for manufacturing and research, such as
pharmaceuticals, biotechnology, genomes and medical devices.
• A selection of options fortify the CenTraVac design with additional
electrical and construction features: wiring in seal-tight conduit,
enclosed junction boxes, NEMA 4 protection, industrial-grade
starters, special paint and coatings.

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 Simplex
120–2,000 ton at 50Hz
120–2,000 ton at 60Hz

G
Duplex™
1200–4,000+ ton at 50Hz
1400–4,000+ ton at 60Hz

F E D

Drive performance: Adaptive Frequency™ Quiet, vibration-free operation: Low-speed,

A E
drives are the industry’s most capable variable direct-drive design gives CenTraVac the industry’s
speed drives, optimizing compressor speed lowest sound and vibration levels. It eliminates
control to reduce energy usage. the need for costly jacketing and energy-wasting
liquid-refrigerant sound attenuation, too.
Surge resistance: Multiple stages of
B
compression provide surge resistance and Improved motor efficiency: Semi-hermetic
F
overcome high head-pressure conditions, motor design, along with low-pressure
assuring more consistent comfort levels. refrigerant, provides the lowest refrigerant leak
rates and assures clean and cool motor operation
Better cycle efficiency: An integrated flash
C for maximum performance.
economizer improves cycle efficiency by
5 to 7 percent, further reducing energy use. Reduced refrigerant charge: Trane evaporator
G
technology reduces the refrigerant charge to
One moving part: Exclusive centrifugal
D nearly half that of most competitors. Lower
compressor design is built with only one moving charge means the chiller requires less refrigerant
part that needs just two bearings for support, to operate, and when it comes to refrigerant,
resulting in the most reliable chiller available. less is definitely better in terms of both cost
and environmental impact.
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A range of options...
and a CenTraVac to meet your needs
CenTraVac® chillers are available in a wide range of cooling EarthWise Systems
capacities and with features that can be optimized to suit the
building’s size and function. Specialized chillers fulfill specific Good for the environment,
needs for large-space cooling and lowest environmental great for the bottom line
impact. Your Trane sales engineer can help you select the right
A comprehensive approach to HVAC
CenTraVac chiller based on your specific performance criteria.
system design makes it easy to do what
is best for your building, right for the
EarthWise Systems6 savings as compared to Conventional Systems7 environment and good for your bottom
operating at 100% energy consumption line. A central plant system built around
a CenTraVac centrifugal chiller drives
100 emissions of all kinds to their lowest
levels while raising energy efficiency
7%

95
17% Savings

11%
to new heights. Through the integration
11%
% of HVAC energy consumption

16%

of superior services and optimized

17%
17%

19%
20%
20%

90 controls, EarthWise® systems drive

28%

sustainable outcomes throughout the

85
30%

entire life cycle of the system.

80 Additionally, the unique EarthWise

capabilities are incorporated into
75 low-temperature, low-flow systems
to produce the highest levels of
70
efficiency and lowest cost of operation
as compared to conventional systems.
65
Overall, EarthWise Systems use
smaller fans and ductwork, fewer
60
pumps and less piping, reducing both
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6E arthWise Systems

Waterside: 12°F ∆T across evaporator, 15°F ∆T across condenser, high-efficiency chiller.
Airside: 48°F design supply-air temperature, 76°F zone cooling setpoint (due to lower indoor RH driven by lower supply air-temperatures, per
ASHRAE Cold Air System Design Guide defining indoor comfort), supply-air-temperature reset (from 48°F up to 60°F) at mild outdoor conditions,
comparative enthalpy economizer, parallel fan-powered VAV terminals, optimized supply duct static pressure control (fan-pressure optimization).
7C onventional Systems
Waterside: 10°F ∆T across evaporator, 10°F ∆T across condenser, minimum ASHRAE 90.1 chiller efficiency.
Airside: 55°F design supply-air temperature, 75°F zone cooling setpoint, fixed dry-bulb economizer, VAV with reheat terminals, fixed supply duct
static pressure control.

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Duplex CenTraVac Chiller
High capacity, low complexity
For larger cooling capacities, the Duplex™
centrifugal chiller extends the proven Trane
CenTraVac design to more than 4,000 tons.

Duplex chillers with a series-counterflow

design and dual independent refrigerant
circuits leverage thermodynamic staging
to deliver unmatched efficiency. Duplex
designs reduce energy consumption by 13
percent over a single compressor unit; and
when paired in a series configuration, they
increase the energy savings to 19 percent.

• Duplex chiller features include the following:

• Series counterflow for highest efficiency
- Very low water-pressure drop
• Multiple compressors with multiple stages
for unloading stability and efficiency
- Versatile for ambient applications
• Proven CenTraVac compressors and
ancillaries
• 380–13,800 volts

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Add options to enhance energy management
Chiller options conserve energy and save money. Your CenTraVac® chiller can be configured in hundreds of different
ways to deliver the performance you need. Energy management features are designed, factory-installed and tested to
provide seamless integration with chiller operation.

Adaptive Frequency Drives (AFD)

Adaptive Frequency™ Drives control the operating
speed of the chiller compressor motor by regulating
output voltage in proportion to output frequency.
Varying the speed to optimize the performance of the
compressor can take advantage of part lift conditions
that translate into significant energy savings.

Heat recovery
Use of the heat recovery CenTraVac can significantly reduce
the energy operating costs of many buildings by using
heat that normally is rejected to the cooling tower. Heat
recovery enables you to reduce your need for boilers — thus
lowering your overall system energy use. Any building with a
simultaneous heating and cooling load is a potential candidate.

Free cooling options

A refrigerant migration feature can provide up to 45 percent of
the nominal chiller capacity, without running the compressor.
Under the right conditions, it can produce significant cost
savings. Examples include climates with cooler wetbulb
temperatures where a cooling load is present, applications
with elevated leaving chiller water temperatures, and settings
where heat is rejected into a river, lake or pond.

Thermal energy/ High efficiency tubing

ice storage Enhanced tubes have
A thermal storage system greater surface area
uses a dual-duty chiller where heat can be
to make ice at night when transferred from one side
utilities charge less for of the tube to the other,
electricity. The ice supplements or even replaces and they provide more fluid turbulence. External
mechanical cooling during the day when utility enhancements suit the refrigerant properties
rates are at their peak. Reducing mechanical and the application (boiling or condensing),
cooling results in big utility cost savings. while internal enhancements improve fluid flow.

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Symbio® 800 Chiller Controls:
it’s how facility managers
keep their cool
The Symbio® 800 controller provides a launch point for
the evolution of all-digital HVAC systems. The controller
does what Trane knows best: program-in performance to
draw out the results you need within the realities of your
world, creating comfortable and efficient environments.

With an AdaptiView™ full-color touch screen display and

interactive animated graphics enabled by Symbio 800, Trane customers directed the design of the
you can view, access and control chiller operations and AdaptiView user interface, which provides a
functions and gain insight into the operating patterns, practical approach to chiller management.
energy use and system performance.

Algorithms embedded within the controller work with

the unique capabilities of the CenTraVac chiller to keep
buildings operational, even during the most challenging
conditions when other chillers would shut down.

Manage multiple chillers from any location

with Tracer SC+ controls
Adding a Tracer ® SC+ system controller to a system
provides a flexible, cost-effective solution for managing
your HVAC system that can extend to lighting and energy
consumption. Its simplified, web-based management The Tracer SC+ controller provides an easy-to-use
tools help improve efficiencies, increase tenant comfort interface via the web to monitor and control
and reduce energy costs. a chiller plant from any location.

Symbio® 800 unit controllers integrate seamlessly and

securely with Tracer or non-Trane building automation
systems, leveraging secure remote IP connectivity
(BACnet, Modbus® and LonTalk ®) open standard
communication protocols and optional Air-Fi® wireless
technology for simplified equipment monitoring and
management.

• Unit controllers can be factory-mounted to ensure easy

installation and reliable performance
• Chiller sequencing routines optimize chiller plant energy
efficiency by rotating individual chiller operation to equalize Ensemble & Synchrony Building Automation
runtime, and by matching capacity to the building cooling load systems that work with Tracer SC+ system controls
• Coordinates pumps and cooling towers with the chiller use an easy-to-interpret graphical display to report
operation for greater energy efficiency and reduced costs current operating conditions and energy usage.
• Alarms and diagnostic messages provide easier monitoring
and troubleshooting

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Next-generation refrigerants
Environmental sustainability is at the heart of CenTraVac® design. Low pressure
refrigerants operate in a vacuum, which virtually eliminates leaks and enables
near-zero emissions throughout the operational life of the CenTraVac chiller.

We chose refrigerants based on their overall impact on the environment, taking The EcoWise® portfolio of
into consideration ozone depletion potential (ODP), global warming potential products is designed to
(GWP) and energy efficiency. This enables our chillers to be environmentally lower environmental impact
sustainable without compromising reliability, cost savings or safety. with next-generation, low
global warming potential
CenTraVac chillers are part of the Trane Technologies EcoWise® portfolio
(GWP) refrigerants and high
of products. They operate with either R-123 or next-generation, low global
efficiency operation.
warming potential (GWP) refrigerants R-514A or R-1233zd — both featuring
ultra-low GWPs of less than two.

CenTraVac Chiller Product Family

Series S

CVHE/F
60 Hz

CVHH

CDHF

CDHH

CVHG/E

CDHG
50 Hz

CVHH

CDHH

500 1,000 1,500 2,000 2,500 3,000 3,500 4,000

Capacity (in tons)
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Trane Building Services: maintain peak
HVAC performance year after year
Long-term support Local support: we’ve got your back
The local Trane team can provide comprehensive Trane fully supports HVAC systems through a network
support throughout the life of your chiller: of sales offices located around the world. We have
the industry’s most knowledgeable engineers, HVAC
• Available extended service warranties and regular
systems specialists and technical professionals on staff.
maintenance protect the chiller investment and add
value to your CenTraVac purchase by sustaining its Currently, over 700 Trane employees have earned LEED®
peak operating efficiency accreditation from the U.S. Green Building Council.
• Remote monitoring by Trane is available to safeguard
Of course, what’s most important to you is that your
and enhance system performance
local Trane sales engineers and technical team will see
• Emergency technical service provides fast resolution
you through the entire chiller purchase process, from
to minimize downtime
building analysis to equipment specification, through
• A full line of replacement parts is available in local inventory installation and commissioning.
• Training in proper chiller operation and maintenance is
available at several Trane training facilities, or on-site at
the chiller location

The average life span of a

CenTraVac chiller is over
thirty years — a full five years
longer than competitive
chillers.8 In many cases
chillers have been operating
for half a century. Trane
offers support to help
sustain peak performance
throughout the equipment’s
full life expectancy.

8. “Comparison of Service Life Estimates,” ASHRAE HVAC Applications Handbook, (2007 edition): Chapter 36, page 36.3, table 4.

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Our Climate Commitment

50% 35% $500M

Reduction in the greenhouse Reduction in greenhouse gas Investment in product-related
gas refrigerant footprint of footprint of our own operations research and development by
our products by 2020 and by 2020. 2020 to fund the long-term
incorporating alternatives with reduction of GHG emissions.
lower GWP across the company’s
product portfolio by 2030.

The EcoWise portfolio of products designed to lower environmental impact

with next-generation, low global warming potential (GWP) refrigerants and
high-efficiency operation is part of our climate commitment to increase energy
efficiency and reduce the greenhouse gas emissions (GHG) related to our
operations and products.

Learn more at trane.com

Trane – by Trane Technologies (NYSE: TT), a global climate innovator – creates comfortable, energy efficient indoor
environments through a broad portfolio of heating, ventilating and air conditioning systems and controls, services,
parts and supply. For more information, please visit trane.com or tranetechnologies.com.

All trademarks referenced in this document are the trademarks of their respective owners. © 2021 Trane. All Rights Reserved.
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09/17/2021