York YT Millennium Manual

OPERATING & MAINTENANCE
MILLENNIUM ®
CENTRIFUGAL LIQUID CHILLERS
Supersedes: 160.55-O1 (604) Form 160.55-O1 (920)
MODEL YT (STYLE J)
R-123 COOLING ONLY
WITH OPTIVIEW™CONTROL CENTER
FOR ELECTRO-MECHANICAL STARTER,
SOLID STATE STARTER and VARIABLE SPEED DRIVE
29509A
Issue Date:
September 18, 2020

YORK INTERNATIONAL
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FORM 160.55-O1 (920)
This equipment is a relatively complicated apparatus.
During rigging, installation, operation, maintenance,
or service, individuals may be exposed to certain com-
ponents or conditions including, but not limited to:
heavy objects, refrigerants, materials under pressure,
rotating components, and both high and low voltage.
Each of these items has the potential, if misused or
handled improperly, to cause bodily injury or death. It
is the obligation and responsibility of rigging, instal-
lation, and operating/service personnel to identify and
recognize these inherent hazards, protect themselves,
and proceed safely in completing their tasks. Failure
to comply with any of these requirements could result
in serious damage to the equipment and the property in
IMPORTANT!
READ BEFORE PROCEEDING!
GENERAL SAFETY GUIDELINES
which it is situated, as well as severe personal injury or
death to themselves and people at the site.
This document is intended for use by owner-authorized
rigging, installation, and operating/service personnel. It
is expected that these individuals possess independent
training that will enable them to perform their assigned
tasks properly and safely. It is essential that, prior to
performing any task on this equipment, this individual
shall have read and understood the on-product labels,
this document and any referenced materials. This in-
dividual shall also be familiar with and comply with
all applicable industry and governmental standards and
regulations pertaining to the task in question.
SAFETY SYMBOLS
The following symbols are used in this document to alert the reader to specific situations:
Indicates a possible hazardous situation
which will result in death or serious injury
if proper care is not taken.
Indicates a potentially hazardous situa-
tion which will result in possible injuries
or damage to equipment if proper care is
not taken.
Identifies a hazard which could lead
to damage to the machine, damage to
other equipment and/or environmental
pollution if proper care is not taken or
instructions and are not followed.
Highlights additional information useful
to the technician in completing the work
being performed properly.
External wiring, unless specied as an optional connection in the manufacturer’s product line, is not
to be connected inside the control cabinet. Devices such as relays, switches, transducers and controls
and any external wiring must not be installed inside the micro panel. All wiring must be in accor-
dance with Johnson Controls’ published specications and must be performed only by a qualied
electrician. Johnson Controls will NOT be responsible for damage/problems resulting from improper
connections to the controls or application of improper control signals. Failure to follow this warning
will void the manufacturer’s warranty and cause serious damage to property or personal injury.

FORM 160.55-O1 (920)
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YORK INTERNATIONAL
CHANGEABILITY OF THIS DOCUMENT
In complying with Johnson Controls’ policy for contin-
uous product improvement, the information contained
in this document is subject to change without notice.
Johnson Controls makes no commitment to update
or provide current information automatically to the
manual or product owner. Updated manuals, if appli-
cable, can be obtained by contacting the nearest John-
son Controls Service office or accessing the Johnson
Controls Knowledge Exchange website at https://docs.
johnsoncontrols.com/chillers/.
It is the responsibility of rigging, lifting, and operating/
service personnel to verify the applicability of these
documents to the equipment. If there is any question
regarding the applicability of these documents, rig-
ging, lifting, and operating/service personnel should
verify whether the equipment has been modified and
if current literature is available from the owner of the
equipment prior to performing any work on the chiller.
ASSOCIATED LITERATURE
MANUAL DESCRIPTION FORM NUMBER
SOLID STATE STARTER (MOD “A”) – OPERATION & MAINTENANCE 160.46-OM3.1
SOLID STATE STARTER (MOD “B”) – OPERATION & MAINTENANCE 160.00-O2
VARIABLE SPEED DRIVE – OPERATION 160.00-O1
INSTALLATION 160.55-N1
WIRING DIAGRAM – UNIT WITH ELECTRO-MECHANICAL STARTER 160.55-PW1
WIRING DIAGRAM – UNIT WITH SOLID STATE STARTER (MOD “B”) 160.55-PW2
WIRING DIAGRAM – UNIT WITH VARIABLE SPEED DRIVE 160.55-PW3
RENEWAL PARTS – UNIT 160.48-RP5
RENEWAL PARTS – GRAPHIC CONTROL CENTER 160.55-RP1
AFFECTED PAGES DESCRIPTION
3 Associated Literature table updated
3 Conditioned Based Maintenance program information added
REVISION NOTES
Revisions made to this document are indicated in the following table. These revisions are to technical information,
and any other changes in spelling, grammar, or formatting are not included.
CONDITIONED BASED MAINTENANCE
Traditional chiller maintenance is based upon assumed
and generalized conditions. In lieu of the tradition-
al maintenance program, a Johnson Controls YORK
Conditioned Based Maintenance (CBM) program can
be substituted. This CBM service plan is built around
the specific needs for the chiller, operating conditions,
and annualized impact realized by the chiller. Your lo-
cal Johnson Controls Branch can propose a customized
Planned Service Agreement that leverages real time
and historical data, delivering performance reporting,
corrective actions required and data enabled guidance
for optimal operation and lifecycle assurance. The pro-
gram will include fault detection diagnostics, operation
code statistics, performance based algorithms and ad-
vance rules based rationale delivered by the Johnson
Controls Connected Equipment Portal.

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FORM 160.55-O1 (920)
NOMENCLATURE
The model number denotes the following characteristics of the unit
YT K3 C4 E2 — CR J
Model Design Level
Cooler Code Motor Code
Condenser Code Power Supply
— for 60 Hz
Compressor Code 5 for 50 Hz

FORM 160.55-O1 (920)
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YORK INTERNATIONAL
SECTION 1 Description of System and Fundamentals of Operation............................... 7
SECTION 2OptiView Control Center ............................................................................. 9
SECTION 3Printers ..................................................................................................... 112
SECTION 4System Operating Procedures .................................................................. 124
SECTION 5System Components Description ............................................................. 131
SECTION 6Operational Maintenance ......................................................................... 135
SECTION 7Troubleshooting........................................................................................ 138
SECTION 8Maintenance ............................................................................................. 144
SECTION 9Preventive Maintenance ........................................................................... 152
SECTION 10 OptiSave Energy Analyser Feature .......................................................... 154
TABLE OF CONTENTS