JOHNSON CONTROLS
13
FORM 100.50-NOM6
ISSUE DATE: 8/07/2017
1
CONDENSING SECTION
Scroll Compressors
Reliable, efficient, trouble-free operation is the true
measure of a packaged rooftop’s value. That’s why
YORK YPAL Packaged Rooftop Air Conditioners
use established scroll-compressor technology to de-
liver dependable, economical performance in a wide
range of applications. With the YORK YPAL 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 YORK
YPAL has the ability to stage it’s cooling by enabling
and disabling multiple single stage compressors on
multiple circuits. These compressors are manifolded
together in two independent circuits.
Compressor Circuiting
The YORK YPAL is designed so that only 2 scroll
compressors are in tandem within one refrigeration
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/s will remain operational to work to maintain
occupied loads. The YORK YPAL system has 2 cir-
cuits in the unit.
ECOLOGICAL AND ECONOMICAL DESIGN
High Efficiency YORK YPAL
rooftop units are opti-
mized for HFC-410A refrigerant. YORK provides the
FIRST standard product offering that meets the latest
ASHRAE 90.1 energy efficiency requirements.
Cooling and Heating
Superior operating performance provides lower oper-
ating 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 economizers provide energy savings in free
cooling mode, and can provide a healthier and more
comfortable building environment by introducing
fresh outside air into the building as needed. Indoor
Air Quality (IAQ) requirements for building ventila-
tion and comfort are controlled through the micropro-
cessor control panel.
Premium-Efficiency Motors
Premium-efficiency motors are available for optimum
energy efficiency. All motors used on the YORK YPAL
packaged rooftop air conditioner meet U.S. EPACT
1992 minimum requirements.
High-efficiency motors are standard. Motors are avail-
able in ODP or TEFC construction.
SECTION 1 – INTRODUCTION
FIGURE 1 -
PACKAGED ROOFTOP AIR CONDITIONING UNIT
LD13271