JOHNSON CONTROLS
14
FORM 100.50-NOM6
ISSUE DATE: 8/07/2017
SECTION 1 – INTRODUCTION
Compressor Sound Blankets
Optional factory installed sound blankets can be in-
stalled to further reduce compressor sound attenuation.
Replaceable Core Filter Driers
The optional replaceable core filter drier on the YORK
YPAL provides a convenient means for maintaining
and optimizing the units refrigeration system. Elimi-
nating additional field penetrations into the refrigerant
circuit, which could lead to potential problems, reduce
the worry of refrigerant circuit contamination.
Low Ambient Operation
Head-pressure control is accomplished via a VFD
motor controller rather than an inefficient and noisy
condenser fan damper. By varying the speed of the
condenser fan, better control and quieter operation is
obtained during the colder months. Low ambient con-
trols are available on all systems offering higher roof-
top cooling capacity than competitive units.
Condenser Fan Motors
The condenser fan motors used on the YORK YPAL
unit are Totally Enclosed Air Over (TEAO)
to provide
maximum durability through any season.
Condenser Coils
Are available in various materials and coatings to suit
almost any type of application. Aluminum or copper
fins, pre-coated or post-coated fins are available. The
coating is applied using an epoxy coating on the alumi-
num coil. Each coil option is beneficial when the unit
must operate under extreme conditions. The use of an
epoxy coated coil is recommended for units installed in
a corrosive environment.
Hot Gas By-pass
Is standard on VAV units.
Condenser Coil Protection
The YORK YPAL is available with a wire mesh guard
for optimum coil protection.
HEATING SECTION
Staged Gas Heat
The YORK YPAL rooftop gas furnace is an induced-
draft gas furnace designed for high efficiency and reli-
ability. The furnace uses an aluminized steel tubular
heat exchanger and operates at temperatures sufficient
to prevent acidic exhaust gases from condensing in the
heat exchanger at low fire rates, unlike drum and tube
style furnaces that generate condensation formation.
Up to three stages of heat are available.
An optional stainless steel heat exchanger is also avail-
able.
Electric
The YORK YPAL is also available with an electrical
heater that can range from 40kW up to 50kW. Depend-
ing on the size of the heat required, the YORK YPAL
can have 3 steps of control helping to provide tighter
control of the supply and zone conditioned air. With
the utilization of this multi step function, the YORK
YPAL can effectively reduce energy consumption by
bringing on smaller stages of heat while maintaining
the maximum level of comfort.
Steam and Hot Water
This option will be available in the future.
AIR MANAGEMENT
The raised access floor concept is a proven design ideal
for office buildings that house today’s modern busi-
ness that relies on critical information technologies
to maintain high productivity levels. The unmatched
flexibility offered by raised floor systems allows for
significant costs savings and reduced downtimes when
a fast-paced economy demands office space reconfigu-
ration.
DWDI Airfoil Fans
High efficiency fans are used to improve application
flexibility, and address sound and application concerns.
Building Pressure Control
Exhaust fans and barometric relief dampers are avail-
able to meet building pressure control requirements.
Select the most appropriate option for a given applica-
tion.
Low Sound Options
Allow for application of the YORK YPAL unit in
sound-sensitive applications such as theaters and
downtown areas. Contact Johnson Controls for more
details on site-specific requirements.
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