Product Manual PM WSC/WDC 3
Introduction
THE DISTINCTION SERIES
As a result of extensive research and development efforts on both heat transfer and compressor
components, McQuay will enter the 21
st
century with a new generation of centrifugal chillers. So
advanced that they have been given a new model designation, WSC for single and WDC for dual
compressor units. Their new name, the DISTINCTION SERIES
ļ
, was deemed highly
appropriate. Distinction is defined as:
Excellent in performance
Recognition of superiority
The fact of being different
FEATURES BENEFITS
Alternative refrigerant leadership- Complete
HFC-134a centrifugal chiller line
The confident choice for the future-Positive
pressure-Environmentally safe -Non-toxic- No
purge unit
Dual compressors available up to 2,700 tons-
(9500kW) Two of all mechanical and electrical
components
Lower annual energy cost than any single
compressor chiller - Dual compressor
reliability ā Small footprint
New generation MicroTech Control A complete chiller plant controller-Open
protocol-Loaded with customer benefits-See
detailed specification
Bolt together construction at tube sheets Easy disassembly and re-assembly at the job
site for those difficult retrofit installations
Pumpdown capability-Entire charge can be
valved off and stored in the condenser or in
either vessel in dual compressor units
Eliminates the need for a separate pumpout
vessel in most situations
Small footprint Optimizes equipment room space
Units performance tested in the factory to job
conditions, within established limits
Factory testing assures trouble free startups
and reliable operation
Over 30 years of product refinement and
factory ISO 9002 Certified
Insures consistent quality for long, trouble-
free operation
Certification
McQuay chillers for specific capacity and component assemblies have been submitted to Underwriters Laboratories Inc. for
certification and listing. Their symbol will be affixed only to those units when required by specification or code. Consult the
factory for selection on all applications where UL is required.
Full ARI 550 (now ARI 550/590) participation and certification has been an on-going commitment at McQuay International.
The ARI label affixed to certified units certifies that the unit will meet the specified performance. This equipment is certified in
accordance with ARI Standard 550/590, latest edition, provided the application ratings are within the scope of the certification
program. This excludes the following applications: air and evaporative cooled chillers, capacity exceeding 2000 tons (7000
kW), voltages above 5000 volts, brine and special fluids other than water, 50 Hz, and heat recovery.
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