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JOHNSON CONTROLS
6
FORM 100.50-EG5 (108)
EVAPORATOR SECTION
Double Wall Construction – Double-wall construction
is the standard construction of the Eco
2
and incorporates
powder coated pre-fabricated outer panels and corner
post for maximum exterior surface protection.
Factory Shrink-wrap – Eco
2
rooftop units are shipped
from the factory with factory-fresh shrink-wrap packag-
ing. No longer does the contractor need to worry about
dirt and debris clogging up condenser coils or moisture
leaking into the air handler on the units way to the job
site or rigging yard.
Copper Fins – For more extreme climates that aggres-
sively can attack aluminum, copper tube evaporator coils
with copper fi ns are available. (This is not recommended
for units in areas where they may be exposed to acid
rain or environments where ammonia is present)
CONDENSER FEATURES AND OPTIONS
Scroll Compressors – Reliable, effi cient, trouble-free
operation is the true measure of a packaged rooftop’s
value. That’s why YORK Eco
2
Packaged Rooftop
Air Conditioners use established scroll compressor
technology to deliver dependable, economical per-
formance in a wide range of applications. With the
Eco
2
Packaged Rooftop, you get the latest generation
of compressor enhancements added to the scroll’s
inherent strengths. The simplicity of a hermetic scroll
compressor allows the use of fewer moving parts to
minimize breakdown.
Multiple Compressor Staging – Through the use of the
scroll compressor, the Eco
2
has the ability to stage its
cooling by enabling and disabling multiple single stage
compressors on multiple circuits. These compressors
are manifolded together in pairs on a single refrigera-
tion circuit.
Compressor Circuiting – the Eco
2
is designed so that
only 2 scroll compressors are in tandem within one refrig-
eration circuit. This means more reliable compressors,
and less equipment down time. With multiple circuits, if
a compressor should ever fail on one circuit, the other
circuit will remain operational to work to maintain occu-
pied loads. The Eco
2
system has 2 circuits in a unit.
Condenser Fan Motors – The condenser fan motors
used on the Eco
2
unit are Totally Enclosed Air Over
(TEAO) to provide maximum durability through any
season.
Hot Gas Bypass – This options permits continuous,
stable operation at capacities below the minimum step
of unloading by introducing an artifi cial load on the
evaporator. For models YPAL050-061, it is used on the
lead circuit and standard on VAV units.
Replaceable Core Liquid Line Driers – Liquid line
driers are standard on the Eco
2
rooftop unit. An option
is provided for replaceable core driers.
Copper Fins – For more extreme climates that aggres-
sively can attack aluminum, copper tube condenser coils
with copper fi ns are available. (This is not recommended
for units in areas where they may be exposed to acid
rain or environments where ammonia is present)
Pre-Coated Fins – An epoxy-coated aluminum fi n stock
to guard from corrosive agents and insulate against
galvanic potential. Recommended for mild seashore or
industrial locations.
Post-Coated Fins – Technicoat coil-coating process
used on condenser coils for seashore and other cor-
rosive applications (with the exception of strong alkalis,
oxidizers, wet bromide, chlorine and fl uorine in concen-
trations greater than 100ppm).
Compressor Sound Blankets – Optional compressor
acoustic sound blankets are available for sound sensi-
tive applications.
ROOF CURBS
Partial perimeter roof curbs – This option includes a
knock-down 14” high roof curb for use with wood nailer
(by others). Roof curb supports the air handling section
with a separate support under the condenser end.
CABINET FEATURES AND OPTIONS
Double-Wall Access Doors - Full-sized access doors
provide easy access into the unit for routine maintenance
and inspection. Solid wall liners encase insulation and
prevent damage and erosion into the airstream.
Industry-leading, 1,000-hour, salt-spray rating, per
ASTM B117, keeps unit in superior condition.
Features and Benefi ts (continued)