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YORK INTERNATIONAL
4
Features and Benefits
QUALITY ROOFTOP UNIT DESIGNED TO TODAY’S
STANDARDS
Ecological and Economical Design
• First packaged RTU that meets ASHRAE 90.1-2001
with both R-22 and R-407C Refrigerants.
• Cooling and Heating – Superior operating perfor-
mance provides lower operating costs. Smaller steps
of cooling capacity provide tighter control of building
environment and occupant comfort while optimizing
energy efficiency.
• Indoor Air Quality (IAQ) – Outside air economizer
provides energy savings in free cooling mode, and
can provide a healthier and more comfortable build-
ing environment by introducing fresh outside air into
the building as needed. Indoor Air Quality (IAQ) re-
quirements for building ventilation and comfort are
controlled through the microprocessor control panel.
Optional air flow measurement provides an accurate
means of tracking air quality and alerting the occu-
pants or building owner to unhealthy situations.
• Premium Efficiency – Premium-efficiency motors
are available for optimum energy efficiency. All mo-
tors used on the eco
2
packaged rooftop air condi-
tioner meet U.S. EPACT 1992 minimum requirements.
• VFDs Standard on VAV Units – Variable-frequency-
drives provide the HVAC designer with a high-effi-
ciency, quiet and more reliable means of variable air
volume control from a packaged rooftop. On larger
rooftops, ASHRAE 90.1-1999 standard specifies part
load efficiency requirements that make VFDs the
cost-effective solution for meeting the standard.
VFDs can save the owner up to 40% of the energy
costs compared to inlet guide vanes offered on com-
petitive units by reducing the power requirement.
VFDs use fewer parts, which leads to more reliabil-
ity. Also, with fewer moving parts, and the reduction
of speed in the fan, the VFD operates at significantly
quieter operation than the inlet guide vane which
restricts a high volume of airflow, which can actually
increase noise at part load conditions.
Additionally, the YORK VFD includes DC link reac-
tors as standard that have harmonic filtration com-
parable to an AC line reactor. VFDs also provide the
added benefit of soft-starting the supply fan, which
helps to minimize demand charges associated with
inrush currents.
• Network Connectivity with BACnet, LON or Roof-
Link Interface – Through optional communications
protocols, the eco
2
rooftop unit can communicate to
any building automation system. There are four op-
tions available: BACnet Internet Protocol (Ethernet),
BACnet MSTP (RS485), LON or a generic RoofLink
BAS interface, depending on the type of building
automation system. Without network communica-
tions, the eco
2
is designed to operate in stand-alone
mode, or via contact closures for basic control.
• Professional Appearance – A high quality powder
coat paint finish is applied to the galvanized steel
exterior of the eco
2
unit to protect it from aggressive
environments helping to maintain a factory-quality
appearance for years.
• FlexSys Underfloor Air System Configuration –
the eco
2
rooftop is the first packaged rooftop product
with designs specifically for use with the YORK Flex-
Sys underfloor air system. Ask your local YORK
representative for more information.
Indoor Air Quality (IAQ)
• Double-Sloped Stainless Steel Drain Pan – This
double-sloped inclined stainless steel drain pan fa-
cilitates removal of evaporator condensate. Sloped
in two directions, this drain pan swiftly drains any
condensate from the unit. Best of all, the drain pan
is accessible for periodic cleaning required by IAQ
standards.
• Smart Ventilation – YORK maintains the leader-
ship role in IAQ products with adaptive ventilation
control. The OptiLogic
TM
controls provide continuous
monitoring of air quality and take action by opening
the outside air dampers, bringing in the right amount
of fresh air before air impurities reach uncomfortable
or even dangerous levels.
• Air Flow Measurement – Precise measurement
of ventilation air flow is possible using an air flow
measurement station which can be installed in the
economizer section. Proper ventilation air flow is
required to ensure sufficient fresh air is in the build-
ing. A myriad of air flow measurement options are
available from minimum air flow to high-accuracy
full air flow capabilities. The complete system is de-
signed as an integrated component of the
OptiLogic
TM
control system to ensure optimum sys-
tem performance.
• Double Wall Construction – Rigid double-wall con-
struction throughout provides ease of cleaning and
protects against insulation fiber entrainment in the
breathable air. Double-wall construction also helps
improve the acoustical characteristics of the air han-
dling unit.
• Enhanced Filtration – The eco
2
unit gives design-
ers the flexibility to meet various IAQ requirements
with a full range of rigid and throwaway filter options
at various efficiency levels.
• Demand Ventilation – Control of the economizer
is available to maintain a desired ventilation level
based on a 0-10VDC input from a sensor. A factory-
supplied CO
2
sensor is available for installation in
the occupied space.