York MILLENNIUM YCAR0315 Owner's manual

MILLENNIUM®
AIR-COOLED RECIPROCATING LIQUID CHILLERS
EPROM
031-02013-001
28971AR
YCAR0315 – YCAR0685 MODELS
50 HZ
STYLE A
90 - 225 TONS
(315 - 685 kW)
INSTALLATION,OPERATION,MAINTENANCE
MILLENNIUM®
AIR-COOLED RECIPROCATING
LIQUID CHILLERS
New Release Form150.52-NM2(1001)

2YORKINTERNATIONAL
FORM 150.52-NM2 (1001)
TABLE OF CONTENTS
General Safety Guidelines ...................................................................................................................... 6
Safety Symbols........................................................................................................................................ 6
Changeability of this Document .............................................................................................................. 6
SECTION 1GENERAL CHILLER INFORMATION and SAFETY
Introduction ......................................................................................................................................... 8
Warranty ......................................................................................................................................... 8
Safety ......................................................................................................................................... 8
Responsibility for Safety ......................................................................................................................... 8
About this Manual.................................................................................................................................... 9
Misuse of Equipment .............................................................................................................................. 9
Emergency Shutdown........................................................................................................................... 10
Material Safety Data ...............................................................................................................................11
SECTION 2PRODUCT DESCRIPTION
Introduction ....................................................................................................................................... 15
General Description............................................................................................................................... 15
Compressor ....................................................................................................................................... 15
Evaporator (Cooler) ............................................................................................................................... 16
Condenser ....................................................................................................................................... 17
Power and Control Panels..................................................................................................................... 17
Microprocessor Controls ....................................................................................................................... 17
Motor Current Protection ....................................................................................................................... 18
Motor Protection Module ....................................................................................................................... 18
Current Overload ................................................................................................................................... 19
Thermal Overload .................................................................................................................................. 19
Keypad Controls .................................................................................................................................... 22
Accessories and Options....................................................................................................................... 22
Part-Wind Compressor Start ................................................................................................................. 23
Control Circuit Terminal Strip ................................................................................................................ 23
Building Automation System (BAS) Interface ....................................................................................... 23
Condenser Coil Protection Options....................................................................................................... 23
DX Cooler Options................................................................................................................................. 23
Unit Enclosure Options.......................................................................................................................... 24
High Static Fan Option .......................................................................................................................... 24
Sound Reduction Options ..................................................................................................................... 24
Hot Gas Bypass..................................................................................................................................... 24
Vibration Isolation Options .................................................................................................................... 24
Alternative Chilled Fluid Application Options........................................................................................ 25
Unit Nomenclature – Nameplate Engineering Data ............................................................................. 25
SECTION 3HANDLING AND STORAGE
Delivery and Storage ............................................................................................................................. 27
Inspection ....................................................................................................................................... 27
Moving the Chiller .................................................................................................................................. 27
SECTION 4INSTALLATION
Location Requirements ......................................................................................................................... 29
Outdoor Installations ............................................................................................................................. 29
Indoor Installations ................................................................................................................................ 29
Location Clearances.............................................................................................................................. 30
Installation of Vibration Isolators ........................................................................................................... 30
Shipping Braces .................................................................................................................................... 30
Pipework Connection............................................................................................................................. 30
Water Treatment.................................................................................................................................... 31
Pipework Arrangement .......................................................................................................................... 32
Connection Types and Sizes................................................................................................................. 32
Cooler Connections ............................................................................................................................... 32
Refrigerant Relief Valve Piping ............................................................................................................. 32
Ductwork Connection ............................................................................................................................ 33
Electrical Connection............................................................................................................................. 33
Power Wiring ....................................................................................................................................... 33

3
YORKINTERNATIONAL
FORM 150.52-NM2 (1001)
TABLE OF CONTENTS (CONTINUED)
115VAC Control Supply Transformer .................................................................................................... 34
Control Panel Wiring (Terminals 13 - 19).............................................................................................. 34
Volts Free Contacts ............................................................................................................................... 35
System Inputs ....................................................................................................................................... 35
SECTION 5COMMISSIONING
Preparation ....................................................................................................................................... 42
Preparation – Power Off ........................................................................................................................ 42
First Time Start-up ................................................................................................................................. 44
SECTION 6OPERATION
General Description............................................................................................................................... 45
Start-up ....................................................................................................................................... 45
Normal Running and Cycling ................................................................................................................ 45
Shutdown ....................................................................................................................................... 45
SECTION 7TECHNICAL DATA
Flow Rate and Pressure Drop Charts ................................................................................................... 46
Glycol Correction Factors...................................................................................................................... 47
Physical Data ....................................................................................................................................... 48
Temperatures and Flows ....................................................................................................................... 52
Electrical Data57
Electrical Notes................................................................................................................................. 53
Control Power Supply ....................................................................................................................... 53
Electrical Legend .............................................................................................................................. 53
Multiple Point Power Supply Connection ......................................................................................... 54
Optional Single-Point Power Supply Connection with Internal Unit Circuit Breakers..................... 56
Power Connection Options............................................................................................................... 58
Wiring Diagrams.................................................................................................................................... 60
Dimensions ....................................................................................................................................... 78
Clearances ....................................................................................................................................... 90
Isolator Dimensions............................................................................................................................... 91
Weight Distribution – Aluminum Fin Coils ............................................................................................ 92
Isolator Selection – Aluminum Fin Coils ............................................................................................... 93
Weight Distribution – Copper Fin Coils................................................................................................. 94
Isolator Selection – Copper Fin Coils ................................................................................................... 95
Refrigerant Flow Diagram ..................................................................................................................... 96
Process and Instrumentation Diagram ................................................................................................. 97
SECTION 8START-UP
System Startup Checklist ...................................................................................................................... 98
Panel Checks ....................................................................................................................................... 99
Initial Start-Up ....................................................................................................................................... 99
Checking Subcooling and Superheat ................................................................................................. 100
Leak Checking ..................................................................................................................................... 101
SECTION 9MICRO PANEL
Chiller Control Panel Programming and Data Access................................................................... 102
Display and Status Information Keys ............................................................................................. 102
On / Off Rocker Switch ................................................................................................................... 102
Program and Setup Keys ............................................................................................................... 102
1. INTRODUCTION and PHYSICAL DESCRIPTION ........................................................................ 103
1.1 General.................................................................................................................................. 103
1.2 Keypad and Display .............................................................................................................. 103
1.3 Unit (Chiller) ON / OFF Switch.............................................................................................. 103
1.4 Microprocessor Board ........................................................................................................... 103
1.5 Ancillary Circuit Boards......................................................................................................... 104

4YORKINTERNATIONAL
FORM 150.52-NM2 (1001)
1.6 Circuit Breakers..................................................................................................................... 105
1.7 Current Transformers (C.T.) .................................................................................................. 105
1.8 Transformers ......................................................................................................................... 105
1.9 Motor Protection Modules ..................................................................................................... 105
1.10 EMS/BAS Controls ................................................................................................................ 107
1.11 Microprocessor Board Layout............................................................................................... 109
1.12 Logic Section Layout..............................................................................................................110
1.13 Anti-Recycle Timer ................................................................................................................. 111
1.14 Anti-Coincidence Timer.......................................................................................................... 111
1.15 Evaporator Pump Control ...................................................................................................... 111
1.16 Compressor Heater Control................................................................................................... 111
1.17 Evaporator Heater Control ..................................................................................................... 111
1.18 Pumpdown Controls............................................................................................................... 111
1.19 Alarms ....................................................................................................................................112
1.20 Run Status (Chiller)................................................................................................................112
1.21 Lead / Lag Compressor Selection .........................................................................................113
1.22 Compressor Heater................................................................................................................113
2. STATUS KEY and FAULT MESSAGES ..........................................................................................114
2.1 General...................................................................................................................................114
2.2 General Status Messages......................................................................................................114
2.3 Unit Warnings.........................................................................................................................116
2.4 Anticipation Control Status Messages...................................................................................116
2.5 Unit Fault Status Messages ...................................................................................................117
2.6 Individual Start Inhibit Safeties ..............................................................................................118
2.7 System Fault (Safety) Status Messages (Manual Reset) .....................................................119
2.8 Printout on Fault Shutdown................................................................................................... 121
3. DISPLAY KEYS and OPTION SWITCHES .................................................................................... 122
3.1 General.................................................................................................................................. 122
3.2 Chilled Liquid Temps Key...................................................................................................... 122
3.3 System Data Keys................................................................................................................. 122
3.4 Ambient Temp Key ................................................................................................................ 123
3.5 Motor Current Key ................................................................................................................. 123
3.6 Operating Hours / Start Counter Key.................................................................................... 123
3.7 Options Key and Dip Switch Settings ................................................................................... 124
3.8 Function Key ......................................................................................................................... 125
4. PRINT KEYS ................................................................................................................................... 126
4.1 General.................................................................................................................................. 126
4.2 Oper Data Key....................................................................................................................... 126
4.3 Operating Data –Local Display Messages .......................................................................... 126
4.4 Operating Data –Remote Printout ....................................................................................... 128
4.5 History Key ............................................................................................................................ 128
4.6 Fault History Data –Local Display Messages ...................................................................... 129
4.7 Fault History Data –Remote Printout ................................................................................... 131
5. ENTRY KEYS .................................................................................................................................. 133
5.1 General.................................................................................................................................. 133
5.2 Numerical Keypad................................................................................................................. 133
5.3 Enter Key............................................................................................................................... 133
5.4 Cancel Key ............................................................................................................................ 133
5.5 ↑ ↓ Keys ................................................................................................................................ 133
6. SETPOINTS KEYS AND CHILLED LIQUID CONTROL................................................................ 134
6.1 General.................................................................................................................................. 134
6.2 Chilled Liquid Temperature Control ...................................................................................... 134
6.3 Local Cooling Setpoints Key................................................................................................. 135
6.4 Remote Cooling Setpoints Key............................................................................................. 135
6.5 Chilled Liquid Temperature Control ...................................................................................... 135
6.6 Compressor Capacity Loading Sequence............................................................................ 136
6.7 “Fuzzy Logic” “Loading” Anticipatory Control ....................................................................... 137
6.8 “Load Limiting” Anticipatory Control ..................................................................................... 137
6.9 Compressor Unloading and Shutdown Sequence ............................................................... 137
TABLE OF CONTENTS (CONTINUED)

5
YORKINTERNATIONAL
FORM 150.52-NM2 (1001)
6.10 “Fuzzy Logic” “Unloading” Anticipatory Control.................................................................... 138
6.11 “Unloading Limiting” .............................................................................................................. 138
6.12 Optional Hot Gas Bypass Operation .................................................................................... 138
7. CLOCK KEYS ................................................................................................................................. 139
7.1 General.................................................................................................................................. 139
7.2 Set Time Key ......................................................................................................................... 139
7.3 Set Schedule / Holiday Key .................................................................................................. 139
7.4 Manual Override Key............................................................................................................. 141
8. PROGRAM KEY.............................................................................................................................. 142
8.1 General.................................................................................................................................. 142
8.2 Program Key –User Programmable Values ........................................................................ 143
8.3 Programming “Default” Values.............................................................................................. 147
8.4 Condenser Fan Control......................................................................................................... 148
SECTION 10 MAINTENANCE
General Requirements ................................................................................................................... 150
Daily Maintenance .......................................................................................................................... 150
Scheduled Maintenance ................................................................................................................. 150
Chiller/Compressor Operating Log................................................................................................. 151
Maintenance Requirements............................................................................................................ 152
Maintenance Requirements for YORK J,K and P Reciprocating Compressors ........................... 153
General Periodic Maintenance Checks – Standard Units ............................................................. 154
SPARE PARTS .................................................................................................................................... 155
Recommended Spares ................................................................................................................... 155
Recommended Compressor Oils ................................................................................................... 155
Associated Drawings ...................................................................................................................... 155
TROUBLESHOOTING......................................................................................................................... 156
Competent Person’s Troubleshooting Guide ................................................................................. 156
Sensor Calibration Charts .............................................................................................................. 158
Limited Warranty............................................................................................................................. 159
Temperature Conversion Chart ...................................................................................................... 160
TABLE OF CONTENTS (CONTINUED)
LIST OF TABLES
TABLE 1 – Motor Protector Dip Switch Settings ...................................................................................... 20
TABLE 2 – Program Defaults and Limits ............................................................................................... 147
TABLE 3 – Condenser Fan Control and Fan Contactor Data for DXRT Units with 3 Fans / System .... 149
TABLE 4 – Condenser Fan Control and Fan Contactor Data for DXRT Units with 4 Fans / System .... 149
TABLE 5 – Condenser Fan Control and Fan Contactor Data for DXRT Units with 5 Fans / System ..... 149

6YORKINTERNATIONAL
FORM 150.52-NM2 (1001)
This equipment is a relatively complicated apparatus.
During installation, operation, maintenance or service,
individuals may be exposed to certain components or
conditionsincluding,butnotlimitedto: refrigerants, oils,
materials under pressure, rotating components, and both
high and low voltage. Each of these items has the po-
tential,if misused or handled improperly,tocausebodily
injury or death. It is the obligation and responsibility of
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 dam-
age to the equipment and the property in which it is
IMPORTANT!
READ BEFORE PROCEEDING!
GENERAL SAFETY GUIDELINES
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
operating/service personnel. It is expected that this indi-
vidual possesses independent training that will enable
themto perform their assignedtasks properly and safely.
It is essential that, prior to performing any task on this
equipment,thisindividual shall have read and understood
this document and any referenced materials. This indi-
vidual shall also be familiar with and comply with all
applicable governmental standards and regulations per-
taining to the task in question.
LIST OF FIGURES
FIG. 22 – Control Circuit – Detail “C” ......................... 67
FIG. 23 – YCAR0315 - YCAR0685 Wiring Diagram
Connection Diagram, Electrical Box .......... 68
FIG. 24 – Connection Diagram, System Wiring
Across-the-Line Start ................................. 70
FIG. 25 – Connection Diagram, System Wiring
Part-Wind Start .......................................... 71
FIG. 26 – Connection Diagram, Electrical Box .......... 72
FIG. 27 – Connection Diagram, System Wiring
Across-the-Line Start ................................. 73
FIG. 28 – Connection Diagram, System Wiring
Part-Wind Start .......................................... 74
FIG. 29 – Elementary Diagram, Power Circuit
Standard and Remote Evaporator Units.... 75
FIG. 30 – Control Power Transformer Kit .................. 76
FIG. 31 – Control Circuit – Detail “A” ......................... 77
FIG. 32 – Clearances................................................. 90
FIG. 33 – Refrigerant Flow Diagram .......................... 96
FIG. 34 – Process and Instrumentation Diagram ...... 97
FIG. 35 – Motor Protector ........................................ 106
FIG. 36 – Component Layout .................................. 109
FIG. 37 – Logic Section Layout ................................110
FIG. 38 – Suction Pressure Cutout .......................... 120
FIG. 39 – Dipswitches on Microprocessor Board .... 125
FIG. 40 – Condenser Fan Layout for DXRT ............ 148
FIG. 41 – Operating Log .......................................... 151
FIG. 1 – Component Locations ................................ 15
FIG. 2 – Reciprocating Compressor ........................ 16
FIG. 3 – Unit Rigging ............................................... 28
FIG. 4 – Lifting Lugs................................................. 28
FIG. 5 – Pipework Arrangement .............................. 32
FIG. 6 – Victaulic Groove......................................... 32
FIG. 7 – Flange Attachments ................................... 32
FIG. 8 – Power Panel Section Options .................... 36
FIG. 9 – Logic Section Layout ................................. 38
FIG. 10 – Logic Section Layout w/Control Panel ....... 39
FIG. 11 – Customer Connections .............................. 40
FIG. 12 – Customer Connections .............................. 41
FIG. 13 – Flow Rate and Pressure Drop Charts ........ 46
FIG. 14 – Multiple Point Power Supply Connection... 58
FIG. 15 – Optional Single-Point Power Supply
w/Internal Circuit Breakers......................... 58
FIG. 16 – Optional Single-Point Power Supply
w/Field Supplied Circuit Protection ............ 59
FIG. 17 – Standard Dual Compressor Power
Supplies – Across-the-Line Start ............... 60
FIG. 18 – Standard Dual Compressor Power
Supplies – Part-Wind Start ........................ 61
FIG. 19 – YCAR0315 - YCAR0685 Wiring Diagram
Connection Diagram, Control Circuit ......... 64
FIG. 20 – Control Circuit – Detail “B”
(Across-the-Line Start)............................... 66
FIG. 21 – Control Circuit – Detail “B”
(Part-Wind Start)........................................ 66

7
YORKINTERNATIONAL
FORM 150.52-NM2 (1001)
SAFETY SYMBOLS
Thefollowingsymbols areused inthis documenttoalertthereader toareas ofpotential hazard:
CAUTION identifies a hazard which
could lead to damage to the machine,
damageto other equipment and/or en-
vironmental pollution. Usually an in-
struction will be given, together with
a brief explanation.
NOTE is used to highlight additional
information which may be helpful to
you.
DANGER indicates an imminently
hazardous situation which, if not
avoided, will result in death or seri-
ous injury.
WARNING indicatesapotentiallyhaz-
ardoussituationwhich,if not avoided,
couldresult in deathor seriousinjury.
External wiring, unless specified as an optional connection in the manufacturer’s product
line, isNOT to be connected insidethe micro panel cabinet.Devices such as relays,switches,
transducers and controls may NOT be installed inside the micro panel. NO external wiring
is allowed to be run through the micro panel. All wiring must be in accordance with YORK’s
published specifications andmust be performedONLY by qualified YORKpersonnel. YORK
will not be responsible for damages/problems resulting from improper connections to the
controls or application of improper control signals. Failure to follow this will void the
manufacturer’s warranty and cause serious damage to property or injury to persons.
CHANGEABILITY OF THIS DOCUMENT
In complying with YORK’s policy for continuous prod-
uct improvement, the information contained in this
document is subject to change without notice. While
YORK makes no commitment to update or provide
current information automatically to the manual owner,
that information, if applicable, can be obtained by con-
tacting the nearest YORK Applied Systems Service
office.
It is the responsibility of operating/service personnel
as to the applicability of these documents to the equip-
ment in question. If there is any question in the mind
of operating/service personnel as to the applicability
of these documents, then, prior to working on the equip-
ment, they should verify with the owner whether the
equipment has been modified and if current literature
is available.

8YORKINTERNATIONAL
FORM 150.52-NM2 (1001)
INTRODUCTION
YORK Millennium YCAR chillers are manufactured
to the highest design and construction standards to en-
sure high performance, reliability and adaptability to all
types of air conditioning installations.
The unit is intended for cooling water or glycol solu-
tions and is not suitable for purposes other than those
specified in this manual.
This manual and the Microprocessor Operating Instruc-
tions contain all the information required for correct in-
stallation and commissioning of the unit, together with
operating and maintenance instructions. The manuals
should be read thoroughly before attempting to operate
or service the unit.
All procedures detailed in the manuals, including in-
stallation, commissioning and maintenance tasks, must
only be performed by suitably trained and qualified
personnel.
The manufacturer will not be liable for any injury or
damage caused by incorrect installation, commission-
ing, operation or maintenance resulting from a failure
to follow the procedures and instructions detailed in the
manuals.
WARRANTY
YORK warrants all equipment and materials against
defects in workmanship and materials for a period of
one year from initial start-up, or eighteen months from
delivery (whichever occurs first) unless extended war-
ranty has been agreed upon as part of the contract.
The warranty is limited to parts-only replacement and
shipping of any faulty part or sub-assembly which has
failed due to poor quality or manufacturing errors. All
claims must be supported by evidence that the failure
has occurred within the warranty period, and that the
unit has been operated within the design parameters.
All warranty claims must specify the unit model, serial
number, order number and run hours/starts. These de-
tails are printed on the unit identification plate.
Theunit warranty will be void if any modification to the
unit is carried out without prior written approval from
YORK.
For warranty purposes, the following conditions must
be satisfied:
• The initial start of the unit must be carried out by
trained personnel from an Authorized YORK Ser-
vice Center. See Commissioning, page 42.
• Onlygenuine YORK-approved spare parts, oils and
refrigerants must be used. Recommendations on
spare parts can be found on page 155.
• All the scheduled maintenance operations detailed
in this manual must be performed at the specified
times by suitably trained and qualified personnel.
See Maintenance Section, page 150.
Failure to satisfy any of these conditions will automati-
cally void the warranty. See Warranty Policy, page 159.
SAFETY
Standards for Safety
MillenniumYCARchillersaredesignedandbuiltwithin
an ISO 9002 accredited design and manufacturing or-
ganization.The chillers comply with the applicable sec-
tions of the following Standards and Codes:
• ANSI/ASHRAE Standard 15, Safety Code for Me-
chanical Refrigeration
• ANSI/NFPA Standard 70, National Electrical Code
(N.E.C.)
• ASME Boiler and Pressure Vessel Code, Section
VIII Division 1
• ARI Standard 550/590-98
In addition, the chillers conform to Underwriters Labo-
ratories (U.L.) for construction of chillers and provide
U.L./cU.L. listing label.
RESPONSIBILITY FOR SAFETY
Every care has been taken in the design and manufac-
ture of the unit to ensure compliance with the safety
requirements listed above. However, the individual op-
erating or working on any machinery is primarily re-
sponsiblefor:
• Personal safety, safety of other personnel, and the
machinery.
• Correct utilization of the machinery in accordance
with the procedures detailed in the manuals.
SECTION 1 – GENERAL CHILLER INFORMATION AND SAFETY
General Chiller Information and Safety

9
YORKINTERNATIONAL
FORM 150.52-NM2 (1001)
ABOUT THIS MANUAL
The contents of this manual include suggested best
working practices and procedures. These are issued for
guidance only, and they do not take precedence over
the above-stated individual responsibility and/or local
safety regulations.
This manual, and any other document supplied with the
unit,arethepropertyofYORK,whichreservesallrights.
They may not be reproduced, in whole or in part, with-
outpriorwrittenauthorization from an authorized YORK
representative.
MISUSE OF EQUIPMENT
Suitability for Application
Theunit is intended for coolingwater or glycol solutions
and is not suitable for purposes other than those speci-
fiedinthese instructions. Any use of the equipment other
than its intended use, or operation of the equipment con-
trary to the relevant procedures, may result in injury to
the operator or damage to the equipment.
The unit must not be operated outside the design pa-
rameters specified in this manual.
StructuralSupport
Structural support of the unit must be provided as indi-
cated in these instructions. Failure to provide proper
support may result in injury to the operator, or damage
to the equipment and/or building.
Mechanical Strength
The unit is not designed to withstand loads or stresses
from adjacent equipment, pipework or structures. Addi-
tionalcomponents must not be mountedon the unit. Any
such extraneous loads may cause structural failure and
may result in injury to the operator, or damage to the
equipment.
General Access
There are a number of areas and features which may
be a hazard and potentially cause injury when working
on the unit unless suitable safety precautions are taken.
It is important to ensure access to the unit is restricted
to suitably qualified persons who are familiar with the
potential hazards and precautions necessary for safe
operationandmaintenanceofequipmentcontaininghigh
temperatures, pressures and voltages.
Pressure Systems
The unit contains refrigerant vapor and liquid under
pressure, release of which can be a danger and cause
injury. The user should ensure that care is taken during
installation, operation and maintenance to avoid dam-
age to the pressure system. No attempt should be made
to gain access to the component parts of the pressure
system other than by suitably trained and qualified
personnel.
Electrical
The unit must be grounded. No installation or mainte-
nance work should be attempted on the electrical equip-
ment without first switching OFF, isolating and locking
off the power supply. Work on live equipment must only
be carried out by suitably trained and qualified person-
nel. No attempt should be made to gain access inside
the control panel or electrical enclosures during normal
operation of the unit.
Rotating Parts
Fan guards must be fitted at all times and not removed
unless the power supply has been isolated. If ductwork
is to be fitted, requiring the wire fan guards to be re-
moved, alternative safety measures must be taken to
protect against the risk of injury from rotating fans.
Sharp Edges
The fins on the air-cooled condenser coils have sharp
metal edges. Reasonable care should be taken when
working in contact with the coils to avoid the risk of
minor abrasions and lacerations. The use of gloves is
recommended.
Refrigerants and Oils
Refrigerants and oils used in the unit are generally non-
toxic, non-flammable and non-corrosive, and pose no
special safety hazards. Use of gloves and safety glasses
are, however, recommended when working on the unit.
The build-up of refrigerant vapor, from a leak for ex-
ample, does pose a risk of asphyxiation in confined or
enclosed spaces, and attention should be given to good
ventilation. For more comprehensive information on
safety precautions for use of refrigerants and oils, refer
to the Materials Safety Data tables provided on pages
11 through 14.
1

10 YORKINTERNATIONAL
FORM 150.52-NM2 (1001)
High Temperature and Pressure Cleaning
High temperature and pressure cleaning methods (e.g.
steam cleaning) should not be used on any part of the
pressure system as this may cause operation of the pres-
surerelief device(s). Detergents and solvents which may
cause corrosion should also be avoided.
General Chiller Information and Safety
EMERGENCY SHUTDOWN
In case of emergency, the electrical option panel is fit-
ted with anemergency stop switch CB3 (Circuit Breaker
3), located in the bottom right of the Microprocessor
Panel. Separate Circuit Breakers CB1 (System 1) and
CB2 (System 2) can also be used to stop the respective
system in an emergency. When operated, each removes
the electrical supply from the control system, thus shut-
ting down the unit.

11
YORKINTERNATIONAL
FORM 150.52-NM2 (1001)
MATERIAL SAFETY DATA
SAFETY DATA R-22
Toxicity Low.
Liquid splashes or spray may cause freeze burns. Unlikely to be hazardous by skin absorption. R-22
In Contact With Skin may be slightly irritant and liquid has a degreasing effect. Thaw affected areas with water. Remove
contaminated clothing carefully - may adhere to skin in case of freeze burns. Wash affected areas
with plenty of warm water. If symptoms occur (irritation or blistering), obtain medical attention.
In Contact With Eyes Vapor has no effect. Liquid splashes or spray may cause freeze burns. Immediately irrigate with
eyewash solution or clean water for at least 10 minutes. Obtain immediate medical attention.
Highly unlikely to occur - but should this occur, freeze burn will occur. Do not induce vomiting.
Ingested Provided patient is conscious, wash mouth with water and give about 250 ml (0.5 pint) to drink.
Obtain immediate medical attention.
High levels of vapor concentration initially produce stimulation and then depression of the central
nervous system, causing headaches and giddiness and may lead to unconsciousness. Can prove
suddenly fatal if the exposure has been severe.
Inhalation At higher concentration, there is a danger from asphyxiation due to reduced oxygen content of
atmosphere. Remove patient to fresh air, keep warm and at rest. Administer oxygen if necessary.
Apply artificial respiration if breathing has ceased or shows signs of failing. In event of cardiac
arrest, apply external cardiac massage. Obtain immediate medical attention.
Further Symptomatic and supportive theory is indicated. Cardiac sensitization has been described which
Medical Advice may, in the presence of circulating catecholamines such as adrenaline, give rise to cardiac arrhythmia
and subsequent arrest following exposure to high concentrations.
A lifetime inhalation study in rats and mice gives a small excess in salivary gland tumors in male
Long-Term Exposure rats only at 50,000 ppm; 10,000 ppm showed no effect. This information suggests that R-22 does
not represent a carcinogenic hazard to humans.
Occupational Recommended limit: 1000 ppm v/v - 8 hr TWA 1250 ppm v/v - 12 hr TWA.
Exposure Limits
Stability Unstable.
ConditionstoAvoid Use in presence of naked flames, red hot surfaces and high moisture levels.
Hazardous Reactions May react violently with sodium, potassium, barium and all other alkali and alkaline earth metals.
Incompatible materials: Magnesium and alloys containing more than 2% magnesium.
Hazardous
Decomposition Halogen acids formed by thermal decomposition.
Products Avoid inhalation of high concentrations of vapors. Atmospheric concentrations should be minimized
General Precautions and kept as low as reasonably practicable below the occupational exposure limit. The vapor is
heavier than air and collects at low level and in confined areas. Ventilate by extraction at lowest
levels.
Respiratory Protection Where doubt exists on atmospheric concentration, HSE-approved breathing apparatus should be
worn. This should be self-contained or of the long breather type.
Storage Keep containers dry and in a cool place away from fire risk, direct sunlight, and all sources of heat
such as radiators. Keep at temperatures not exceeding 45°C (113°F).
Protective Clothing Wear overalls, impervious gloves and goggles/face protection.
Ensure suitable personal protective clothing and respiratory protection is worn. Provided it is safe to
do so, isolate the source of the leak. Allow small spillages to evaporate provided there is suitable
Spill / leak Procedure ventilation. Large spillages: ventilate area. Contain spillages with sand, earth or any suitable
absorbent material. Prevent liquid from entering drains, sewers, basements and work pits since
vapor may create a suffocating atmosphere.
Disposal Best to recover and recycle. If this is not possible, destruction is to be in an approved facility which
is equipped to absorb and neutralize acids and other toxic processing products.
FireExtinguishing Data Non-flammable.
Containers Fire exposed containers should be kept cool with water sprays. Containers may burst if overheated.
FireFighting Self-contained breathing apparatus and protective clothing must be worn in fire conditions.
Protective Equip.
REFRIGERANTDATA: 1

12 YORKINTERNATIONAL
FORM 150.52-NM2 (1001)
MATERIAL SAFETY DATA
Section 1 – PRODUCT NAME AND INFORMATION
Product (Trade Name and Synonyms): YORK “C” Oil
Chemical Name: Semi-Synthetic Hydrocarbons
ChemicalFamily: MineralOil
Formula: Proprietary
CAS#: Proprietary
Section 2 – COMPONENTS AND HAZARD STATEMENT
This product is non-hazardous. The product contains no known carcinogens. No special
warning labels are required under OSHA 29 CFR 1910.1200.
Section 3 – SAFE HANDLING AND STORAGE
Handling - Do not take internally. Avoid contact with skin, eyes, and clothing. Upon contact with skin, wash
with soap and water. Flush eyes with water for 15 minutes and consult physician. Wash contami-
nated clothing before reuse.
Storage - Keep container tightly sealed when not in use.
Section 4 – PHYSICAL DATA
Appearance: Colorlessliquid
Boiling Point: > 260°C (500°F)
Vapor Pressure: <0.1 mmHg @ 20°C
Specific Gravity (water=1): 0.89 - 0.905
Volatiles, Percent by Volume: 0%
Odor: Slight
SolubilityinWater: Insoluable
Evaporation Rate (butyl acetate=1): Nil
Section 5 – FIRE AND EXPLOSION HAZARDS
Flash Point (by Cleveland Open Cup): 176 - 188°C (350 - 370°F)
FlammableLimits: Not Established
AutoignitionTemperature: No data
HMIS Ratings:
Health: 0
Flammability: 1
Reactivity: 0
Personal Protection: B
Extinguishing Media: Dry chemical; CO2 foam; water fog
Unusual Fire and Explosion Hazards: None
Special Fire Fighting Techniques: Burning fluid may evolve irritating/noxious fumes.
Firefighters should use NIOSH/MNSA-approved self-contained breath-
ing apparatus. Use water carefully to cool fire-exposed containers.
Spraying water directly on hot or burning liquid may cause frothing or
splashing.
General Chiller Information and Safety

13
YORKINTERNATIONAL
FORM 150.52-NM2 (1001)
Section 6 – REACTIVITY DATA
Stability: Stable
HazardousPolymerization: Will not occur
IncompatibleMaterials: Strong oxidizers
ConditionstoAvoid: Excessive heat
Hazardous Decomposition Products: Analogous compounds evolve carbon monoxide, carbon dioxide,
and other unidentified fragments when burned. See Section 5.
Section 7 – HEALTH HAZARD DATA
ThresholdLimit Value: 5 mg/m3for oil mist
SituationstoAvoid: Avoid breathing oil mists
First Aid Procedures:
Ingestion: DO NOT INDUCE VOMITING. Consult physician at once. DO NOT give anything by
mouth if the person is unconscious.
Inhalation: Product is not toxic by inhalation. If oil mist is inhaled, remove to fresh air and
consult physician.
Contact: Prolonged exposure may irritate the skin. Wash exposed skin with soap and water.
To the best of our knowledge, the toxicological properties of these compounds have not been fully
investigated. Analogous compounds are considered to be essentially non-toxic.
Section 8 – PERSONAL PROTECTION INFORMATION
Respiratory Protection: Use in well-ventilated area
Ventilation: Local exhaust
Protective Gloves: Not required, but recommended, especially for long-term exposure.
Eye/Face Protection: Goggles
Section 9 – SPILL OR LEAK PROCEDURES
In Case of Spill: Wear suitable protective equipment, especially goggles. Stop source of spill. Dike spill area.
Use absorbent materials to soak up fluid (i.e. sand, sawdust, or commercially available mate-
rials). Wash spill area with large amounts of water. Properly dispose of all materials.
Section 10 – WASTE DISPOSAL METHODS
Incinerate this product and all associated wastes in a licensed facility in accordance with Federal, State,
and local regulations.
The information in this material safety data sheet should be provided to all who use, handle, store, transport,
or are otherwise exposed to this product. YORK believes the information in this document to be reliable and
up to date as of the date of publication, but makes no guarantee that it is.
1

14 YORKINTERNATIONAL
FORM 150.52-NM2 (1001)
MATERIAL SAFETY DATA
General Chiller Information and Safety
SAFETYDATA YORK“E”OIL
Classification Non-hazardous.
In Contact With Skin Irritant - may aggravate any existing skin disorders. Wash hands and any other contacted skin with
soap and water after handling. If contact occurs with clothing, remove and launder before reuse.
In Contact With Eyes Irritant - flush eyes with eyewash solution or clean water for 15 minutes and consult a physician
if symptoms develop and persist.
Ingested Irritant to gastrointestinal tract. DO NOT induce vomiting. Wash mouth out with water and obtain
immediate medical attention.
Inhalation Remove to fresh air and begin artificial respiration if necessary. Give oxygen if breathing is
labored and obtain immediate medical attention.
Occupational Not determined.
Exposure Limits
Stability Stable.
ConditionstoAvoid Avoid oxidizers and sources of ignition.
Hazardous Smoke, carbon monoxide, carbon dioxide.
Decomposition
Respiratory Protection Use in well-ventilated areas - ventilate locally.
Protective Clothing Not necessary, but goggles or face shield recommended. Protective boots and apron may also
be worn.
Actpromptly to protect environment. Eliminateallignition sources. Stop source ofspill. Use absorbent
materials to soak up spill and place in a sealed container for disposal. For large spills: wear
suitable respirator and protective clothing. Evacuate hazard area of unprotected personnel. Stop
source of spill if safe to do so. Dike and contain spill and remove with pump to storage/salvage
vessels.
Disposal Incinerate the oil and all associated wastes in an approved facility in accordance with all local laws
and regulations governing oily wastes.
Flash point over 150°C (302°F). Use dry powder carbon dioxide or water/fog spray.
FireExtinguishing Data If a leak or spill has not ignited, use water spray to disperse the vapors and to provide protection for
persons attempting to stop the leak.
Containers Fire exposed containers should be kept cool with water sprays.
FireFighting Self-contained breathing apparatus and protective clothing must be worn in fire conditions.
Protective Equip.
REFRIGERANTOIL DATA:
Spill / leak Procedure

15
YORKINTERNATIONAL
FORM 150.52-NM2 (1001)
1 System Fans
2 System 1 Power Panel
3 System 2 Power Panel
4 ControlPanel
5 PowerEntry
6 System1 Compressor
7 Cooler(NotShown)
8 System2 Compressor
9 System1 Condenser
10 Option Box
4
10
23
1
8
6
5
9
INTRODUCTION
YORK Millennium YCAR chillers are complete fac-
tory-packaged units designed for water or water-glycol
cooling. All units are designed to be located outside on
the roof of a building or at ground level.
The units are completely assembled with all intercon-
necting refrigerant piping and internal wiring, ready for
fieldinstallation.
Prior to delivery, the unit is pressure tested, evacuated,
and fully charged with refrigerant and oil in each of the
two independent refrigerant circuits. After assembly, an
operationaltest is performed with waterflowing through
the cooler to ensure that each refrigerant circuit oper-
ates correctly.
All external structural parts are covered with architec-
turally neutral “Desert Sand” (Munsell #10YR6-2)
baked-on enamel powder paint. This provides a finish
which, when subjected to ASTM B117, 500 hour, 5%
salt spray conditions, shows breakdown of less than
3 mm (1/8") on either side of a scribed line (equivalent
to ASTM D1654 rating of “6”.
Design is in accordance with applicable sections of
ASME Pressure Vessel Code, NFPA 70 (National Elec-
trical Code), U.L. and cU.L. Standards, and ASHRAE/
ANSI-15 Safety Code for Mechanical Refrigeration.
All exposed power wiring routed through liquid-tight,
non-metallicconduit.
GENERALDESCRIPTION
The chiller consists of two reciprocating compressors
in two separate refrigerant circuits, a single shell-and-
tube DX evaporator, economizers, an air-cooled con-
denser, expansion valves, fans and modular frame rails.
COMPRESSOR
The chiller has accessible, semi-hermetic, reciprocat-
ing compressors. All rotating parts are statically and
dynamically balanced.
Motor
The compressor motors are refrigerant gas-cooled, with
integral temperature sensing and external current sens-
28971AR
SECTION 2 – PRODUCT DESCRIPTION
FIG. 1 – COMPONENTLOCATIONS
2

16 YORKINTERNATIONAL
FORM 150.52-NM2 (1001)
Product Description
ing, solid-state overload protection in each phase. The
terminal boxes are raintight. Starting is by either part-
winding or across the line.
Housing
The compressor housing is cast iron, and contains: re-
movable cylinder heads with internal muffling; suction
and discharge service valves; crankcase sightglass and
heater;oil and suctionstrainers;andinternal relief valving
conforming to ASHRAE/ANSI - 15 Standard Safety
Code.
Crankshaft
The crankshaft is ductile (nodular) iron, drilled for posi-
tiveoildistribution, with integral counterweights for bal-
ancing. The main bearings are of the insert type, steel-
backed Babbitt. The thrust bearing is bronze.
Cylinder Assemblies
Suction and discharge valves are high-quality stainless
steel. The pistons are aluminum alloy with two piston
rings. The connecting rods are aluminum alloy with in-
tegral bearing surfaces on both ends. Cylinder liners
are removable.
Lubrication
The lubrication is force-fed by a reversible oil pump to
all crankshaft and bearing surfaces through a fine-mesh
stainless steel oil strainer. A magnetic plug is included
in the oil stream. YORK “C” Oil is used for standard
R-22 applications; YORK “E” Oil is used for high am-
bient (>40.6°C [105°F]) R-22 applications.
Capacity Control
Capacity control is provided by microprocessor oper-
ated, solenoid actuated, capacity-control valves.
The electrical solenoid unloading coils are energized to
route high pressure fluid to the compressor blocked suc-
tion unloading devices, which stops the flow of gas to
the cylinders. This method efficiently and effectively
matches the low load conditions as required. Gas flow
is sufficient at all times to cool the motor.
Isolation
Each compressor is mounted on isolator pads to reduce
transmission of vibration to the rest of the unit.
Suction Strainer
A 130-micro suction strainer is installed in the suction
inlet to the motor housing.
EVAPORATOR(Cooler)
The cooler is a high-efficiency, direct-expansion type
coolerwithrefrigerantintubesandchilledliquidthrough
the baffled shell. Independent circuits are provided for
each compressor.
The design working pressure of the shell waterside is
10.3 bar (150 PSIG), and 24 bar (350 PSIG) for the
refrigerant side. It is constructed and tested in accor-
dance with applicable sections of ASME Pressure Ves-
sel Code, Section VIII, Division (1). Waterside is ex-
empt per paragraph U-1, (c), (6).
The water baffles are fabricated from galvanized steel
to resist corrosion. Removable heads allow access to
internally enhanced, seamless copper tubes. Water vent
and drain connections are included.
Thecooler is equipped with a microprocessor-controlled
heater for protection to -29°C (-20°F) ambient, and
insulated with 19 mm (3/4") flexible, closed cell foam
(k = 0.26).
FIG. 2 – RECIPROCATING COMPRESSOR
27531A

17
YORKINTERNATIONAL
FORM 150.52-NM2 (1001)
CONDENSER
Fans
Condenser fans are made of a corrosion-resistant alu-
minum hub and glass fiber, reinforced polypropylene
composite blades molded into low-noise, full airfoil
cross-section for maximum efficiency. They are stati-
cally and dynamically balanced for vibration-free op-
eration, and positioned in extended, formed steel ori-
fices for low sound and maximum efficiency.
Motors
Condenser fan motors are high-efficiency, direct-drive,
6-pole, 3-phase, Class F, current-overload protected,
totally enclosed (TEAO) type with double-sealed per-
manently lubricated ball bearings.
Condenser Coils
Fin and tube condenser coils are made of seamless, in-
ternally enhanced, high-condensing coefficient, corro-
sion resistant copper tubes arranged in staggered rows
and mechanically bonded to corrosion-resistant alumi-
num alloy fins with full height fin collars. Design work-
ing pressure is 31 bar (450 PSIG), and each coil is pres-
sure tested to 34 bar (495 PSIG) to ensure quality.
Refrigerant Circuit
There are independent refrigerant circuits per compres-
sor, each using copper refrigerant pipe formed on com-
putercontrolled bending machines. This eliminates over
60% of system piping brazed joints, as compared to
designs that use fittings, resulting in a highly reliable
and leak-resistant system.
Liquid line components include: manual shutoff valve
with charging port, high-absorption removable core fil-
ter-drier, solenoid valve, sightglass with moisture indi-
cator, and reliable thermostatic expansion valves.
Suction and discharge lines are provided with manual
compressor shutoff service valves. The suction line is
equipped with closed-cell insulation.
POWER AND CONTROL PANELS
The power and control panels are divided into power
sections for each compressor and associated fans: a
control section and an electrical options section. Power
and control panels are housed in NEMA 3R/12 (IP55)
rain/dusttight,powder painted steel cabinets with hinged,
latched and gasket sealed outer doors equipped with
wind struts for safer servicing. Standard part-wind start
provides reduced inrush current during compressor
motor start, compared to across-the-line start.
Eachpower compartment contains: Compressor and
fan starting contactors; fan motor external overloads,
controlcircuitservingcompressorcapacitycontrol;com-
pressor and fan contactor coils; and compressor motor
overloads.
Thecurrent transformers for the compressormotor over-
load sense each phase, as an input to the microproces-
sor. This protects the compressor motors from damage
due to: low input current, high input current, unbalanced
current, single phasing, phase reversal and compressor
locked rotor.
The control section contains: On/Off Switch,
MicroComputer keypad and display, Microprocessor
Board, I/O Expansion Board, relay boards and power
supply board.
The options section contains: A control circuit trans-
former complete with service switch providing 115/1Ø
power to the unit control system.
Electrical options are as described in “Accessories and
Options”.
MICROPROCESSORCONTROLS
The Microprocessor panel provides the following func-
tions and displays:
• A liquid crystal 40 character display with text pro-
vided on two lines and light-emitting diode back-
lightingfor outdoor viewing.
• A color-coded, 32 key, sealed keypad with sections
for Display, Entry, Setpoints, Clock, Print, Program
and Unit On/Off.
The standard controls include:
• Brine chilling thermal storage
• Automatic Pumpdown
• Run signal contacts
• Demand load limit from external building automa-
tion system input
• Remote reset liquid temperature reset input
• Unit alarm contacts
• Chilledliquidpump control
• Automatic reset after power failure
• Automatic system optimization to match operating
conditions
2

18 YORKINTERNATIONAL
FORM 150.52-NM2 (1001)
Product Description
The standard unit controls permit operation from -18°C
(0°F) to 52°C (125°F) outdoor ambient temperature.
Thesoftwareisstoredinnon-volatilememory(EPROM)
to eliminate chiller failure due to AC power failure. The
programmed setpoints are stored in lithium-battery
backed RTC memory for a minimum of five years.
MOTORCURRENTPROTECTION
The microprocessor motor protection provides high cur-
rent protection to assure that the motor is not damaged
due to voltage, excess refrigerant, or other problems
that could cause excessive motor current. This is ac-
complished by sending 3-phase current signals propor-
tional to motor current from the Motor Protector mod-
ule to the Power Supply Board, where the signals are
conditioned and routed to the I/O Expansion board to be
multiplexed and sent to the Microprocessor Board. If
the motor current exceeds the 115% FLA trip point af-
ter 3 seconds of operation on either Wye-Delta or ACL
starters, the micro will shut the system down and lock it
out after one fault. A manual reset of the respective
system switch is required to clear the fault and restart
the system. A thorough check of the motor, wiring, and
refrigerant system should be done before restarting a
system that has faulted on high motor current.
The micro also provides low motor current protection
when it senses a motor current less than 10% FLA.
The micro will shut the system down whenever low
motor current is sensed, and will lock out a system if
three faults occur in 90 minutes. Low motor current
protection is activated 4 seconds after start on both
Wye-Delta and ACL starters to assure that the motor
starts, the system doesn’t run without refrigerant, the
motor protector is not tripped, and the mechanical high
pressure cut-out is not tripped. Once the system is
locked out on Low Motor Current, it must be manually
reset with the system switch. See also Motor Protec-
tor Module section.
Themicro senses low motor current whenever an HPCO
or Motor Protector contact opens. This occurs because
the MP and HPCO contacts are in series with the mo-
torcontactor. Whenever either of these devices are open,
the contactor de-energizes and the motor shuts down.
Since the micro is sending a run signal to the contactor,
it senses the low motor current below 10% FLA and
shuts the system down.
MOTOR PROTECTOR MODULE
The mechanical motor protector is a Texas Instruments
2ACE Three Phase Protection Module (Fig. 36, page
113) thermal and current motor overload protection.
This module protects against phase-to-phase current im-
balance, over-current, under-current, and phase rota-
tion. The module, mounted in the power panel, utilizes
a 7-segment display which provides operating status
and fault diagnostic information. The 7-segment dis-
play will display either a stationary or a flashing alpha-
numeric value which can be decoded by the operator.
A list of the codes is shown below:
Normal motor OFF display. Sequentially
HAXXX sweeps through the motor protector dip
switch setting.
0Normal - no fault detected (Running)
Flashing “0” Motor off or unloaded < 5A (Running)
AC current level.
1High current fault.
2Loaded phase to phase current
imbalance > 17%.
3Unloaded phase to phase current
imbalance > 25%.
4Improper incoming phase rotation.
5High motor temperature.
Trip point = 13 kW, reset = 3.25 kW.
6Communication error.
7Unload Balance ( > 50%)
8Phase Loss ( >60%)
EOut of range of RLA calibration.
Other symbols Defective module or supply voltage.
Workingvoltage 18-30VAC, 224VAC nominal.
Lowvoltage trip = 15VAC.
Whenever a motor protector trips, the motor protector
contacts wired in series with the motor contacts opens
andthe motor contactor de-energizes allowingthe motor
tostop.Themicrosensesthe low motor current and shuts
the system down. The micro will try two more starts
before locking the system out. The system locks out be-
cause the motor protector is a manual reset device. After
the first start the modules’ contacts will be open, pre-
ventingthe motorcontactorsfrom energizing.Powermust
be removed and reapplied to reset the module.

19
YORKINTERNATIONAL
FORM 150.52-NM2 (1001)
(266°F) is sensed. The sensor experiences a rapid rise
in resistance beyond this temperature. Whenever the
resistance of one of the sensors reaches 13kΩ, the 2ACE
module trips, which ultimately de-energizes the motor’s
pilot circuit. Reset is manual after the motor cools and
the sensor resistance drops to 3.25kΩ.
Current Imbalance (Loaded and Unloaded) /
Loss of Phase
A 2-second delay at start-up allows for any imbalances
resultingduringnormalstartingconditions. After this ini-
tial delay, the 2ACE module compares the “Operating
Current” to the measured half line current. The “Oper-
ating Current” is given by 0.65 x factory overload cur-
rent setting.
An unloaded compressor condition occurs when any
measured half line current is less than the “Operating
Current.” A current imbalance exceeding an unloaded
level of 25% will result in the motor pilot circuit being
de-energized.
A loaded compressor condition occurs when any mea-
sured half line current is greater than or equal to the
“Operating Current.” A current imbalance exceeding a
loaded level of 17% will result in the motor pilot circuit
being de-energized.
Imbalance is defined as:
(High Phase – Low Phase) / High Phase
Improper Phase Sequence
The 2ACE module calculates the phase sequence at
start-up using the three current transformers to deter-
mine whether the three phase sequence on the load
side of the main contactor is miswired. Upon detec-
tion of a miswired motor load, the module will de-en-
ergize the main contactor pilot circuit within 50 milli-
second response time.
CURRENT OVERLOAD
The2ACEmoduledesignusesoneintegralcurrenttrans-
former per phase to provide protection against rapid
current overload conditions. The module responds to
changes in current and must be calibrated using DIP
switches located on the module. Integral trip curves al-
low for in-rush currents during part-wind or ACL starts
without nuisance tripping.
To check the factory setting of the 2ACE module cur-
rent overload trip value, obtain the RLA from the motor
nameplate and compare it to Table 1.
For the location of the dip switches and determining the
ON side of the switches, refer to Figure 39. As indi-
cated,to place a switch in the ON position requires push-
ing the switch to the left.
It is recommended that a YORK Ser-
vice Technician or the YORK factory
be consulted before changing these
settings for any reason, since damage
to the compressor could result.
Changesshouldnever be made unless
it is verified that the settings are in-
correct.
Any time a dip switch change is made,
power must be cycled OFF and ON to
the module to reprogram the module
to the new value.
THERMAL OVERLOAD
Three PTC (positive temperature coefficient) ther-
mistors in the motor windings of each phase provides
thermal protection. The sensor resistance stays rela-
tively constant at 1kΩuntil a temperature of 130°C
2

20 YORKINTERNATIONAL
FORM 150.52-NM2 (1001)
Product Description
TABLE1–MOTORPROTECTORDIP SWITCH SETTINGS (ACROSS-THE-LINE START)
NO. OF LEADS NO. OF LEADS MP OL *MP DIP
CHILLER VOLTS HZ RLA 100% FLA PER MOTOR THRU MP VALUE SET SWITCHES
TERMINAL
YCAR0315 380 50 92 125 1 1 124 01111100
SYS. 1 AND 2
YCAR0345
SYS. 1 380 50 117 127 1 1 157 10011101
SYS. 2 380 50 92 100 1 1 124 01111100
YCAR0365
SYS. 1 AND 2 380 50 117 127 1 1 157 10011101
YCAR0385
SYS. 1 380 50 131 142 1 1 176 10110000
SYS. 2 380 50 117 127 1 1 157 10011101
YCAR0415
SYS. 1 AND 2 380 50 131 142 1 1 176 10110000
YCAR0435
SYS. 1 380 50 164 177 1 1 221 11011101
SYS. 2 380 50 131 142 1 1 176 10110000
YCAR0485
SYS. 1 AND 2 380 50 164 177 1 1 221 11011101
YCAR0525
SYS. 1 380 50 188 203 2 1 126 01111110
SYS. 2 380 50 164 177 1 1 221 11011101
YCAR0575
SYS. 1 AND 2 380 50 188 203 2 1 126 01111110
YCAR0645
SYS. 1 380 50 228 247 2 1 153 10011001
SYS. 2 380 50 188 203 2 1 126 01111110
YCAR0685
SYS. 1 AND 2 380 50 228 247 2 1 153 10011001
* “1” = ON