Page 1
CGAM air-cooled
scroll chiller
Highly efficient, yet extremely quiet
Page 2
Balancing energy effi ciency
and quiet operation
Energy effi ciency, sound, reliability, controls and
service are all vitally important to the effective
operation of a building. Trane engineers know
how important all these factors are to you—so
we designed them all into our new 20-130 ton
model CGAM chiller. Using the best elements of
each design we created an extremely quiet and
highly effi cient chiller.
High effi ciency and quiet operation
Most air-cooled chillers require you to choose
between a highly-effi cient unit or a low-noise
unit. A quieter fan often produces less air fl ow,
reducing effi ciency. With the Trane CGAM chiller,
we have designed these two very important
benefi ts into one chiller.
Our design team compiled the best approaches
from around the globe to optimize the CGAM
chiller so that it meets global green initiatives
and ASHRAE energy effi ciency standards.
The Trane CGAM chiller is one of the most
effi cient air-cooled chillers, even among screw
compressor equipment. Low sound levels are
standard, with a 5–8db reduction compared to
previous Trane air-cooled chiller models. And,
with factory-installed attenuation, Trane further
reduces sound levels—up to an additional 3db.
Reliability you can count on
Energy effi ciency and quiet operation are
increasingly critical. As a result, we perform
extensive testing on the compressors and units,
confi rming their robust design and durability
while ensuring our high standards for reliability.
Our testing includes:
• Extreme testing includes cold ambient starts,
hot water starts and high ambient operation
• Compressor accelerated life cycle testing,
including high pressure ratio, high load test,
fl ooded starts/stops, start/stop testing
and phase reversal
3 Air-cooled scroll chiller
On-site test
facility ensures
reliability and
performance
verification
Page 3
• Performance modeling and verifi cation, both
during design and for the life of the chiller
• FEA analysis confi rms the unit structure
can withstand shipping, rigging and
operational activity
• Electrical testing with destructive testing for
short circuit withstand rating
To minimize leaks, Trane improved the coil
structure stability by strengthening the coil frame
and changing the construction method. Now we
use a single copper tube for two passes through
the coil to reduce braze joints on one side of the
coil, eliminating up to 60 joints. Furthermore,
the new construction method ensures all
coils are square, so the coil components
are better aligned.
Trane reduces energy costs by incorporating an ice storage system
design that uses ice made at night, when energy demand and cost are
lowest, to cool the building during the day.
Factory installed reliability
We offer several factory-installed features
that further reduce energy consumption, add
redundancy for mission-critical operations and
reduce jobsite installation time — when every
day counts.
A factory-installed pump package, designed
specifi cally for this unit, comes pre-wired and
factory-tested. The dual pump setup provides
built-in redundancy and the standard inverter
delivers added pump energy savings.
With the factory-installed buffer tank, you can
install the chiller in applications with less than a
three minute water loop and still reliably maintain
precise temperature control.
The fl ow switch and water strainer are also
factory installed as standard, reducing jobsite
installation requirements and ensuring
reliable operation.
Low life cycle costs
Trane engineers, using some of the best analytic
approaches and tools in the industry, can fi nd
ways to reduce your energy usage by optimizing
energy effi ciency and performance at every point
within your system. We design systems tailored
for your specifi c application. For example, using
partial heat recovery, the heat rejected from
the condenser while cooling the building can
be redirected through a factory-installed heat
exchanger on the chiller to provide heat for
VAV reheat coils. This provides more effi cient
dehumidifi cation in commercial buildings,
or for pre-heating laundry or pool water in
lodging applications.
Another energy saving strategy is making
ice wherever energy costs are less expensive,
and then using it for cooling during the day.
Ice storage can be used in many applications
including: K-12 schools, government jobs and
industrial processes.
4
Page 4
Air-cooled scroll chiller
Model CGAM (20-130 Ton)
5 Air-cooled scroll chiller
Page 5
Compressor—facilitates full- and part-load effi ciencies that exceed
ASHRAE 90.1- 2004 by 6-8%
Fans—quiet fan design is standard, 5–8 db lower than current models,
with attenuation options for applications requiring ultra-quiet operation.
Integration—pump package and buffer tank are pre-wired and tested
in the factory.
Heat recovery—can provide 140°F (60°C) water for use in
dehumidifi cation or other applications, such as pre-heating laundry
or pool water.
Reliability—water strainer and fl ow switch are factory installed in the
most optimum location; increased coil structure strength and reduced
brazed joints minimize leaks.
Controls—CH530 improved fan staging logic for low ambient starting
capability; Adaptive Controls™ are standard to maintain operation in
adverse conditions.
Durability—powder-coated components and optional coated coils
minimize corrosion.
Serviceability—major components are positioned for easy access.
The unit structure is designed to rig pump up for easy seal changes.
5
6
Page 6
Controls for reliability, efficiency and system monitoring
Trane unit controls and building automation
solutions leverage our applications expertise
to meet your critical requirements. Adaptive
Control™ algorithms embedded in the factory-
mounted CH530 controller on the CGAM chiller
use Trane proprietary strategies to respond to
normal, extreme or adverse conditions.
The sophisticated algorithms intelligently
maximize uptime while protecting equipment
from damage.
The chiller manages time-of-day scheduling
for small offi ce buildings or schools without a
building automation system. If an integrated
pump package is included, the chiller even
controls pumps as needed. For larger enterprise-
wide projects, a Tracer ES™ building automation
system monitors and manages all chillers
within the enterprise.
Energy effi ciency is more important than ever. A
CH530 controller optimizes the CGAM chiller’s
energy consumption. New sensing technology
improves control of the electronic expansion
valve, further raising effi ciency. Tracer Summit™
building automation provides system and
building-wide energy optimization.
Building staff easily and quickly monitor
operating conditions at the chiller, on site or
remotely over the Web. Internet access solutions
can be tailored to facility needs. The CH530
controller improves usability over the previous
generation and the Tracer building automation
human interface is grounded in user-centered
design principles. It provides operators with
consolidated reports of needed data to keep
all systems running at maximum effi ciency.
Recognizing integration to legacy BAS is
sometimes a requirement, Trane actively supports
open standard protocols. The CGAM controller
integrates easily via LonTalk® or BACnet®.
Expert services for the life
of the building
Trane Building Services helps you improve
energy effi ciency, reduce operating costs and
enhance the performance of your equipment—
making your building work better for life.
The CGAM chiller is available with the Trane Elite
Start™ suite of services to make sure your system
operates as designed from day one. Factory
start-up services will help your system perform to
specifi cations upon installation.
7 Air-cooled scroll chiller
Not only do Trane CGAM air-cooled chillers
deliver the lowest noise levels and highest
efficiencies in their class, but they can be
applied with Trane fan coil units or airhandlers to improve indoor air quality—
helping achieve LEED performance.
Page 7
Trane recommends the following Elite
Start services:
• In-Warranty Support—oil analysis, diagnostic
reporting and monitoring keep equipment
operation at peak performance during the fi rst
year of operation.
• Extended Warranty—covers parts and labor
associated with any equipment failure.
• Service Agreements—scheduled inspections
for preventive and proactive maintenance
ensure long-term reliability, effi ciency
and performance.
Making service better
We take full advantage of the vast wealth of
knowledge available to us through our service
professionals by including them in our early
design efforts. As a result the Trane CGAM chiller
has many valuable service improvements:
Tracer Summit can manage chiller sequencing and load sensing for
optimum control on site or over the Web.
To help ensure that the building performance
is meeting your business needs, our service
professionals tap into a global network of proven
best practices, Trane proprietary technology and
industry-leading expertise.
• All major serviceable components are very
close to the edge of the unit, making it safer
and easier to service. The unit has quick and
easy-to-reach service valves, water strainer
and water piping connections.
• The factory-installed pump package is designed
to be serviced in place, including pump seal
changes. Simply lift the pump within the chiller
structure to replace the seal.
• The high pressure transducer and temperature
sensor mountings enable troubleshooting and
replacement without refrigerant handling.
• Separate access to the low voltage control
panel makes the chiller easier to service.
We continually train our technicians and provide
on-demand access to all the latest resources
to make maintenance decisions that will fi ne-
tune your entire system, in order to achieve the
highest level of performance.
No service provider is more qualifi ed to deliver
the cost savings and performance assurance
you demand from your Trane equipment. Trane
sales and service professionals are better able
to customize creative solutions that will better
meet your specifi c maintenance, budget and
operational requirements. To minimize any
downtime, the Trane nationwide network of
HVAC Parts and Supply stores—with access to
over 300,000 items—ensures you can get the
part you need when you need it.
8
Page 8
The results you’ve come to expect
Take advantage of all the benefi ts of the Trane
CGAM air-cooled chiller. Contact your local Trane
account manager to learn more about how you
can increase your effi ciency without sacrifi cing
quiet operation, enjoy low life cycle costs and
gain the peace of mind a Trane chiller provides.
How do you know?
There are hundreds of possible system designs
and chiller confi gurations, and thousands of
possible chiller system effi ciency levels.
How do you narrow the choices and determine
the right HVAC system design choice for your
building investment?
Whether you are calculating energy effi ciency to
determine eligibility for LEED credits, earn tax
deductions, or select the HVAC system with the
lowest operating costs, Trane can help.
The System Analyzer™ helps estimate building
loads and performs preliminary energy and
economic analyses of virtually any building,
system and equipment combination.
For LEED certifi cation, TRACE™ 700 (Trane Air
Conditioning Economics) software helps analyze
the energy and economic effects of virtually
any system confi guration by allowing users to
manipulate a wide range of variables to create
a detailed energy usage profi le for the specifi c
building. Unlike overly simplifi ed spreadsheet-
based energy analysis, TRACE 700 software
accurately compares the impact of building
alternatives, such as architectural features,
HVAC systems and other economic options, to
provide true lifecycle, cost-based decisions.
Your local Trane
account manager can
help you find the
CGAM chiller to meet
your needs.
Ingersoll Rand (NYSE:IR) is a world leader in creating and sustaining safe, comfortable and effi cient environments in commercial, residential and
industrial markets. Our people and our family of brands—including Club Car®, Hussmann®, Ingersoll Rand®, Schlage®, Thermo King® and Trane®—work
together to enhance the quality and comfort of air in homes and buildings, transport and protect food and perishables, secure homes and commercial
properties, and increase industrial productivity and effi ciency. We are a $13 billion global business committed to sustainable business practices within
our company and for our customers.
© 2010 Trane All rights reserved
CG-SLB017-EN October 01, 2010 ingersollrand.com
Produced on post-consumer recycled paper, using
environmentally friendly print practices that reduce waste.
Loading...