Table of Contents
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Introduction
This document explains the operation of the printed cir cuit
boards and major components of the OptiView Con trol
Cen ter to a level that allows a Service Tech ni cian to trou-
ble shoot and locate the source of a prob lem.
The overall system architecture is described and il lus -
trat ed with block diagrams. This describes the general
function of each component and provides the system in-
ter face and signal fl ow. The function of each com po nent
and signal fl ow between components must be un der stood
before effective troubleshooting can com mence.
The operation of each printed circuit board is de scribed
and illustrated with a block diagram that is a simplifi ed
representation of board circuitry. The expected voltage
level at all inputs and outputs of each board for any
operating condition is provided.
Included in this document are procedures that have to
be performed at chiller commissioning or during ser-
vice. They should not be performed by anyone other
than a Service Technician. For example, cal i bra tion
pro ce dures have to be performed or verifi ed at sys tem
com mis sion ing or when a component is replaced. Cer-
tain Safety shutdowns require special reset pro ce dures
to be performed before the chiller can be re start ed.
Since the op er at ing program sup plied in each OptiView
Con trol Center is universal to all ap pli ca tions, special
setpoints, pro gram jumpers and program switches are
required to con fi g ure the chiller for local operating
con di tions.
A System Commissioning Checklist is provided as ref er ence
of items to be performed during chiller com mis sion ing.
Chillers that are equipped with "P" Compressors have
certain com po nent variances. These variances are not ed
in the appropriate sections of this book.
8
SECTION 1
INTRODUCTION
In addition to this document, several levels of sup port ing
documentation are required while servicing the sys tem.
Field Control Modifi cations Diagram 160.54-PW7 pro-
vides details of the interface to remote devices. Op er a tions
Manual 160.54-O1 explains the operation of the OptiView
Control Center Keypad, how to enter Setpoints and ex-
plains all the messages displayed on the OptiView Control
Cen ter display. The following wir ing diagrams provide
the con nec tions between the print ed circuit boards and
com po nents within the OptiView Control Center:
Chillers Through Style E
(Except "P" Compressors):
• YORK Form 160.54-PW1 – Chillers equipped with
Electro-Me chan i cal start er
• YORK Form 160.54-PW2 – Chillers equipped with
Mod "A" YORK Solid State Starter
• YORK Form 160.54-PW2.1 – Chillers equipped
with Mod "B" YORK Sol id State Start er
• YORK Form 160.54-PW3 – Chillers equipped with
YORK Vari able Speed Drive
Chillers Through Style E
("P" Compressors):
• YORK Form 160.54-PW8 – Chillers ("P" Com pres -
sors) equipped with Electro-Mechanical Start er
• YORK Form 160.54-PW9 – Chillers ("P" Com pres sors)
equipped with Mod "B" YORK Solid State Start er
• YORK Form 160.54-PW10 – Chillers ("P" Com-
pres sors) equipped with YORK Variable Speed
Drive
Style F Chillers
(All Compressors):
• YORK Form 160.73-PW1 – (Electro-Mechanical
Start er)
• YORK Form 160.73-PW2 – (Mod "B" YORK Solid
State Start er)
• YORK Form 160.73-PW3 – (Variable Speed
Drive)
FORM 160.54-M1(503)
YORK INTERNATIONAL
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