If Space is Tight, look on the Positive Side.
Carrier's 19XL Centrifugal Chiller with Positive Pressure Refrigerant.
Before you start knocking down walls or enlarging your machine room to accommodate a new chiller, take a look at the 19XL.
Efficient, cost-effective, easy to install and operate
- it's proof positive that smaller is better.
Takes Up To 35% Less Space then Negative Pressure Chillers.
Positive-pressure systems use dense refrigerant gases
that require smaller compressors and heat exchangers. The result
is up to 35% less volume than negative-pressure chillers of the
same capacity.
Overcrowded, cramped machine rooms suddenly have
room to spare. Both the room and the chiller are more accessible.
Maintenance and service are easier. And, most important, you get
the chiller operating capacity you need, in the space you have
- without the expense and inconvenience of demolition and reconstruction.
Modular Design Means No Installation Headaches.
The 19XL's unique design provides a simple nuts-and-bolts
solution to fast, lower-cost installation. Take-apart bolted construction
allows you to disassemble the standard three components outside
of your mechanical equipment room, move them through a standard
sized door opening, and reassemble them on the other side. Quickly
and efficiently.
Designed and Tested for Durability
Each centrifugal compressor is put through a rigorous
mechanical run-in test to insure all components operate properly.
Vibration levels, lube system operation, and guide vane operation
are all tested prior to final chiller assembly.
The heat exchangers are designed and tested to ASME
section VIII, divisions I code for unfired pressure vessels. The
code requires that safety factors used in the design be four times
higher than the safety factors typically used on negative-pressure
chiller designs. An independent authorized inspector witnesses
the burst test of each chiller assembly at 375-400 PSIG to insure
the strength of all the welded, brazed, flanged, and flare joints
in the assembly. After the burst test, the chiller is leak-tested
at 300 PSIG to insure a leak-tight assembly. Each assembled and
wired chiller is then tested to insure the controls are operating
per requirements prior to final preparation for shipment.
Twenty-five percent of 19XL production is further
tested in our performance test laboratory under design cooling
load and conditions to verify predicted ratings.
Reliability
Designed for superior reliability and leak integrity,
the 19XL's liquid refrigerant-cooled motor eliminates shaft seal
leakage and wear, as well as additional machine room cooling requirements
characteristic of open-drive air-cooled motors. The 19XL utilizes
the same proven hermetic motor design used in carrier's 19D centrifugal
chillers that set the industry standard for over 25 years. All
components incorporated into the 19XL design are chosen only after
extensive reliability testing, conducted in our Corporate Engineering
facilities.
And Trouble-Free Operation.
Heavy-duty, steel-backed, babbit-lined bearings,
Kingsbury-type tilting pad thrust bearings, AGMA class 11 high-precision
gears, a time-proven lubrication package, and reliable hermetic
motors ensure drive train integrity and continuous operation between
scheduled preventive maintenance procedures.
Simple and Less Expensive to Maintain and Service.
Thanks to its smaller size and the accessibility
of its major components, regular maintenance is easy, which means
fewer man-hours and lower maintenance costs.
If you require maintenance services, Carrier factory-trained
technicians are available in nearly every major city around the
world. Drawing on an average of 10 years of troubleshooting experience,
our factory-based service engineers know how to turn potentially
costly problems into cost-effective solutions.
Easy-To-Use Microprocessor Controls Put You in Control.
Sophisticated Product Integrated Controls (PIC) monitor
over 100 functions, and display over 125 operating and diagnostic
conditions. Yet the system is operator friendly and exceptionally
easy to use. Guesswork is eliminated. Potential problems are quickly
identified. And day-to-day monitoring and operations are greatly
simplified.
If your chiller is connected to Carrier's Comfort
Network (CCN), it's even simpler. All operating parameters for
your entire HVAC system are intelligently monitored and controlled
from one central location.
"Peace of Mind" Refrigerant Conversion Flexibility.
If at some time in the future you should decide to
convert from HCFC-22 to chlorine-free HFC-134a refrigerant - no
problem. By changing the compressor's aerodynamic components,
losses in cooling capacity can be avoided.
Built-In Refrigerant Containment Means No Expensive Add-Ons.
An inherent advantage of the 19XL's positive pressure
design is its ability to keep air and moisture out, and keep refrigerant
in. This saves you the added cost of a high-efficiency purge unit,
as well as the refrigerant typically lost during the purge process.
There's also no need for refrigerant pressurizing systems - expensive
add-ons that are one of the drawbacks of a negative-pressure chiller.
You'll be doing something positive for the environment, too.
The 19XL is at the forefront of Carrier's $70 million
effort to transition our HVAC equipment to chlorine-free refrigerants.
The 19XL uses environmentally advanced refrigerants, and delivers
high-efficiency cooling in a compact, easy to install package.
Plus, with AEL (Allowable Exposure Limits) of only 1000 ppm, operators
need no special safety apparatus.
By selecting the 19XL to achieve your cooling objectives,
you are making the best choice available in chillers today.
The Perfect Fit for New or Retrofit.
Whatever your operation, whatever the application, count on Carrier's 19XL to be a positive addition to your building. To learn more about it, call your nearest Carrier representative or call 1-800-CARRIER.