Section 2 - Optiview Control Center Introduction - York OPTIVIEW Operation Manual

FORM 160.78-O2
ISSUE DATE: 5/22/2017

SECTION 2 - OPTIVIEW CONTROL CENTER INTRODUCTION

The YORK OptiView™ control center for YMC
microprocessor based control system for R134a cen-
trifugal chillers. It controls the leaving chilled liquid
temperature and maintains required pressure to avoid
surge via pre-rotation vane controls, motor drive speed
and optional hot gas bypass. It has the ability to limit
motor current and shell pressures.
The panel comes configured with a full screen LCD
Graphic Display mounted in the middle of a keypad inter-
face. The graphic display allows the presentation of sev-
eral operating parameters at once. In addition, the opera-
tor 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 param-
eters are clearly and intuitively marked. Instructions for
specific operations are provided on many of the screens.
The graphic display also allows numerical information
to be represented in both English (temperatures in °F and
pressures in PSIG) and Metric (temperatures in °C and
pressures in kPa) mode. The advantages are most appar-
ent, however, in the ability to display many languages.
The control center continually monitors the system opera-
tion and records the cause of any shutdowns (Safety, Cy-
cling 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 ad-
dition, it may be configured to notify the user of certain
conditions via alarms. A complete listing of shutdown,
status, and warning messages is attached in the Display
Messages tables starting on Page 114 of this manual.
Some screens, displayed
setpoints and manual control shown in this manual 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 York YMC
160.78-M2). These parameters affect chiller opera‑
tion and should never be modified by anyone other
than a qualified Service Technician. They are shown
in this manual for reference only.
Advanced diagnostics and troubleshooting information
for Service Technicians are included in York YMC
vice Manual (Form 160.78-M2). Also included in the
Service manual are detailed descriptions of chiller fea-
tures, such as the Refrigerant Level Control, Hot Gas
JOHNSON CONTROLS
is a
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values, programmable
Service Manual (Form
2
Ser-
2
Bypass, Remote Setpoints, Smart Freeze Protection,
variable geometry diffuser, magnetic bearing controller.
The control center expands the capabilities of remote
control and communications. By providing a common
networking protocol through the Building Automation
System (BAS), YORK Chillers not only work well indi-
vidually, but also as a team. This new protocol allows in-
creased remote control of the chiller, as well as 24-hour
performance monitoring via a remote site. In addition,
compatibility is maintained with the present network
of BAS communications. The chiller also maintains
the standard digital remote capabilities as well. Both of
these remote control capabilities allow for the standard
Energy Management System (EMS) interface:
1. Remote Start
2. Remote Stop
3. Remote Leaving Chilled Liquid Temperature Set-
point adjustment (0-10VDC, 2-10VDC, 0-20mA
or 4-20mA) or Pulse Width Modulation
4. Remote Current Limit Setpoint adjustment
(0-10VDC, 2-10VDC, 0-20mA or 4-20mA) or
Pulse Width Modulation
5. Remote "Ready to Start" Contacts
6. Safety Shutdown Contacts
7. Cycling Shutdown Contacts
The chiller operating program resides in the Opti-
view Control Center microboard. The control center is
equipped with the 031-02430-006 Microboard.
Software versions (C.OPT.01.xx.yzz) are alpha-numeric
codes that represent the application, language package
and revision levels per below. Each time the controls
portion or language section is revised, the respective
revision level increments.
• C – Commercial chiller
• OPT - Used on Microboard 031-02430-006
• 16 – YMC chiller
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• xx - controls revision level (00, 01, etc)
• y – language package (0=English only, 1=NEMA,
2=CE, 3=NEMA/CE )
• zz – language package revision level (00, 01, etc)
Software upgrades should only be performed by a Ser-
vice Technician.
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