Section 2 - Optiview™ Control Center; Introduction; Figure 3 - Optiview™ Control Center - York YR Manual

FORM 160.81-O1 (1020)
ISSUE DATE 10/05/2020
SECTION 2 - OPTIVIEW™ CONTROL CENTER
FIGURE 3 - OPTIVIEW™ CONTROL CENTER

INTRODUCTION

The YORK OptiView™ Control Center is a micropro-
cessor based control system for R134a screw chillers.
It controls the Leaving Chilled Liquid Temperature via
slide valve controls and has the ability to limit motor
current via control of the slide valve. Further, it is com-
patible with the YORK Solid State Starter (optional),
and Electro-Mechanical Starter applications.
The panel comes configured with a full screen LCD
Graphic Display mounted in the middle of a keypad
interface. The graphic display allows the presentation
of several operating parameters at once. In addition,
the operator may view a graphical representation of the
historical operation of the chiller as well as the present
operation. For the novice user, the locations of various
chiller parameters are clearly and intuitively marked.
Instructions for specific operations are provided on
many of the screens.
The graphic display also allows information to be rep-
resented in both English (temperatures in °F and pres-
sures in PSIG) and Metric (temperatures in °C and pres-
sures in kPa) mode. The advantages are most apparent,
however, in the ability to display many languages.
The Control Center continually monitors the system op-
eration and records the cause of any shutdowns (Safe-
ty, Cycling or Normal). This information is recorded
in memory and is preserved even through a power
failure condition. The user may recall it for viewing
at any time. During operation, the user is continually
advised of the operating conditions by various status
and warning messages. In addition, it may be config-
JOHNSON CONTROLS
SECTION 2 - OPTIVIEW™ CONTROL CENTER
ured to notify the user of certain conditions via alarms.
A complete listing of shutdown, status, and warning
messages is attached in the Display Messages section
of this book.
There are certain screens, displayed values, program-
mable setpoints and manual controls shown in this book
that are for Service Technician use only. They are only
displayed when logged in at SERVICE access level
or higher. The setpoints and parameters displayed on
these screens are explained in detail in OptiView Con-
trol Center Service Instructions (Form 160.81-M1).
These parameters affect chiller operation
and should never be modified by anyone
other than a qualified Service Techni-
cian. They are shown in this book for
reference only.
Advanced Diagnostics and Troubleshooting informa-
tion for Service Technicians are included in OptiView
Control Center Service Instructions (Form 160.81-
M1). Also included in the Service manual are detailed
descriptions of chiller features, such as the Refrigerant
Level Control, Hot Gas Bypass, Remote setpoints, and
Smart Freeze Protection.
The control center expands the capabilities of remote
control and communications. By providing a com-
mon networking protocol through the MicroGateway,
YORK Chillers not only work well individually, but
also as a team. This new protocol allows increased
remote control of the chiller, as well as 24-hour per-
formance monitoring via a remote site. In addition,
compatibility is maintained with the present network
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