Section 1 - Introduction; About This Manual; Description Of Unit; Nomenclature - York YSCD Manual

ABOUT THIS MANUAL

This manual applies to Versecon Models YSCD/
YSCU012 to YSCD/YSCU090. This manual provides
specifi c instructions for installation, owner mainte-
nances, and troubleshooting.
Due to the dedication of continuous product improve-
ment and enhancements, the information provided is
subject to change without notice

DESCRIPTION OF UNIT

Versecon, the indoor vertical self-contained air con-
ditioner is the ultimate solution addressing the energy
effi ciency, reliability, indoor air quality, and sound
concerns for commercial, industrial and institutional
buildings. Versecon offers a simple system design,
increases system redundancy by providing individual
air conditioning systems per fl oor, lowers maintenance
costs, eases operation and maintenance and provides the
lowest life cycle cost available. Based on these features,

NOMENCLATURE

BASE MODEL NUMBER
1 2 3 4 5
Base Product Type Nominal Tonnage
0
U - Upflow
D - Downflow for FlexSys
W - Water Cooled
A - Air Cooled
C - Chilled Water Cooled
S - Self-contained
Y - York
YSWU039 - YORK Versacon Water Cooled, Upflow, 39 Nominal Tons
YSWU - YORK Floor X Floor, Water Cooled, Upflow
YSAU - YORK Floor X Floor, Air Cooled, Upflow
YSCU - YORK Floor X Floor, Chilled Water Cooled, Upflow
YSWD - YORK Floor X Floor, Water Cooled, Downflow
YSAD - YORK Floor X Floor, Air Cooled, Downflow
YSCD - YORK Floor X Floor, Chilled Water, Downflow
JOHNSON CONTROLS
SECTION 1 – INTRODUCTION
6 7
3 9
the self-contained unit has surpassed the traditional
chillers, air handlers and rooftop systems and is now
the system of choice.
Models YSCD/YSCU012 to YSCD/YSCU090. are fac-
tory assembled and tested, water-cooled packaged air
conditioning units designed for ducted applications.
Each unit contains a chilled water coil, plenum supply
fan, belt drive, fan motor, pleated fi lters and all neces-
sary operating and required safety controls to operate
the unit.
All rigging, installation, power and control wiring ex-
ternal to the unit, and condenser water and condensate
piping are the responsibility of the installer.
TABLE 1 – ACRONYM CHART
ACRONYM TEXT
AO Analog Output
AFS Air Flow Switch
DHS Duct High Static Switch
DSP Duct High Pressure Sensor
DO Digital Output
IN Universal Input
LCD Logic Controller Display
MSF Supply Fan Relay
OLSF Supply Fan Overload
PM Phase Monitor
PWS Power Supply
RSF Supply Fan Relay
S Toggle Switch
T Transformer
VFD Variable Frequency Drive
SAT Supply Air Temp
MAT Mixed Air Temp
AFS Air Flow Switch
DHS Duct High Static
RAT Return Air Temp
FORM 145.05-NOM2 (807)
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