246653-YTG-E-0108
Johnson Controls Unitary Products
5
YORK Millennium
®
OVERVIEW
Introducing the YORK Millennium 25, 30, & 40 ton rooftop
line - units designed to provide peak performance and value
both today and for years to come. When we asked our cus-
tomers what they wanted in a new rooftop line, we were care-
ful to listen to both the needs of today and tomorrow. So,
you'll find that Millennium units not only help you solve
today's problems, but can handle tomorrow's difficulties as
well:
Industry Leading Efficiency - The Millennium's 9.5 EER (10
EER 25 ton) rating makes it the most frugal energy consumer
in its class. When it comes to lower operating costs, Millen-
nium simply outperforms the competition.
Double Wall Construction - Millennium units come double
walled as standard. The galvanized sheet metal liner pro-
vides the best protection against microbial growth, helping
both the unit and the indoor air stay fresh and clean. And, the
rigid sheet metal inner liner keeps the insulation completely
out of the air stream, eliminating concerns about fiberglass
particles.
Drain Pan Whisks Away Condensate - Condensate is fre-
quently the source of microbial contamination. Competitive
drain pans often are insufficiently sloped to properly drain all
of the condensate, causing drain pan corrosion and bacterial
growth to begin almost immediately. The YORK design is
sloped at the 1/4” per foot recommended by the ASHRAE
62.1-2004 ventilation draft standard, with an extra large drain
connection capable of removing up to three gallons of con-
densate per minute. It is available in either powder coat
painted steel or stainless steel for long life.
Efficient, Durable Scroll Compressors - The Millennium
design uses industrial grade hermetic scroll compressors for
peak efficiency and low noise operation. The compressor
design is so durable that it can actually hold more liquid
charge without slugging than is present in each refrigerant
circuit at shipment, dramatically reducing the chances of ever
slugging a compressor with liquid charge.
Multiple Refrigeration Circuits for Greater Turndown - The
YORK Millennium unit has intertwined 10 ton circuits (12.5
ton circuits on the 25 ton) - giving the best unloading capabil-
ity in the industry. With more and more designs requiring
higher outside air quantities, the lower capacity capability is
an outstanding way to neutralize outside air without over-con-
ditioning the space on off-peak days. And, Millennium's high
quality balance-port thermal expansion valves are more
effective at metering refrigerant flow in part-load conditions,
making Millennium a peak-performer across a wide capacity
range.
FEATURES AND BENEFITS
When it comes to flexibility, Millennium really shines. Our cus-
tomers were clear about one thing - not all installations are
the same. Some have very simple needs, others are more
involved. The YORK Millennium serves both markets - and all
of those in between - extremely well. YORK engineers crafted
a design which is both uniquely flexible and competitive, giv-
ing you the best of both worlds. In addition to a competitive
base product, Millennium offers unparalleled flexibility.
Optional features include:
Variable Air Volume - YORK gives you the ability to vary air
volume by inlet guide vanes or variable frequency drive - the
choice is yours. All Millennium VAV units come standard with
hot gas bypass to give extended operation range.
