York MILLENNIUM YCUL0045SC Owner's manual

YCUL0045SC - YCUL0275SC
Standard & Metric Models, Combined
380-415/3/50
MODELSONLY
INSTALLATION, OPERATION & MAINTENANCE
MILLENNIUM
®
AIR-COOLED CONDENSING UNITS
HERMETIC SCROLL
Supersedes: Nothing Form150.63-NM2(999)
00096VIP

YORKINTERNATIONAL
2
TABLE OF CONTENTS
Manual Usage & Revisions ....................................5
General Safety Guidelines ......................................5
Product Identification Number ................................ 6
Refrigerant Flow Diagram.......................................8
SECTION 1INSTALLATION
Installation ..............................................................9
Installation Checklist .......................................9
Handling...........................................................9
Inspection......................................................... 9
Location & Clearances ....................................9
Foundation .....................................................10
Ground Level Locations.................................10
Rooftop Locations..........................................10
Noise Sensitive Locations.............................10
Spring Isolators..............................................10
Compressor Mounting...................................10
Electrical Wiring ....................................................10
Refrigerant Piping .................................................12
Power Supply Wiring .............................................18
Control Wiring........................................................21
Electrical Data .......................................................24
Operational Limitations ........................................30
Physical Data (English) ........................................32
Physical Data (Metric) ...........................................34
Dimensions...........................................................36
YCUL0045SC (English).................................36
YCUL0045SC (Metric)....................................38
YCUL0061SC (English).................................40
YCUL0061SC (Metric)....................................42
YCUL0081SC (English).................................44
YCUL0081SC (Metric)....................................46
YCUL0095SC (English).................................48
YCUL0095SC (Metric)....................................50
YCUL0121SC (English).................................52
YCUL0121SC (Metric)....................................54
YCUL0125SC (English).................................56
YCUL0125SC (Metric)....................................58
YCUL0145SC (English).................................60
YCUL0145SC (Metric)....................................62
YCUL0161SC (English).................................64
YCUL0161SC (Metric)....................................66
YCUL0171SC (English).................................68
YCUL0171SC (Metric)....................................70
YCUL0185SC (English).................................72
YCUL0185SC (Metric)....................................74
YCUL0211SC (English) .................................76
YCUL0211SC (Metric) ....................................78
YCUL0235SC (English).................................80
YCUL0235SC (Metric)....................................82
YCUL0255SC (English).................................84
YCUL0255SC (Metric)....................................86
YCUL0275SC (English).................................88
YCUL0275SC (Metric)....................................90
SECTION 2INITIALSTART-UP
Pre-Startup Checklist ............................................92
Unit Operating Sequence .....................................95
SECTION 3UNITCONTROLS
Introduction ............................................................96
Status Key ............................................................98
Display / Print Keys .............................................103
Entry Keys .......................................................... 110
Setpoints Keys..................................................... 111
Unit Keys .......................................................... 117
Unit Operation .....................................................121
SECTION 4CONTROLSERVICEAND
TROUBLESHOOTING
Clearing History Buffers ......................................129
Software Version..................................................129
Service Mode .......................................................129
Control Inputs/Outputs ........................................130
Checking Inputs/Outputs ....................................133
Analog Inputs – Temperature .............................133
Analog Inputs – Pressure ...................................136
Digital Outputs .....................................................137
Keypad ..........................................................137
Optional Printer Installation ................................138
Parts ..........................................................138
Troubleshooting ..................................................139
Maintenance ........................................................142
ISN Control ..........................................................143
SECTION 5ELEMENTARYDIAGRAMS
YCUL0045 – YCUL0095 .....................................146
YCUL0121 ..........................................................150
YCUL0125 – YCUL0185 .....................................154
YCUL0211 – YCUL0275 .....................................158
APPENDIX 1 ISOLATORS

YORKINTERNATIONAL
FORM150.63-NM2
3
LIST OF TABLES
1 Fitting Equivalent Lengths ................................................................................................ 13
2 Miscellaneous Liquid Line Pressure Drops.................................................................... 13
3 Refrigerant Piping Charges ............................................................................................. 13
4 Refrigerant Line Connections .......................................................................................... 13
5 Refrigerant Line Pressure Drops (English)..................................................................... 14
6 Refrigerant Line Pressure Drops (Metric)........................................................................ 16
7 Micropanel Power Supply ................................................................................................. 25
8 Voltage Limitations (English) ........................................................................................... 30
9 Physical Data.................................................................................................................... 32
10 Setpoint Entry List ............................................................................................................. 92
11 Status Key Messages..................................................................................................... 102
12 Operator Data Quick Reference ..................................................................................... 106
13 Cooling Setpoints Programmable Limits & Defaults .................................................... 113
14 Program Key Limits & Defaults ...................................................................................... 115
15 Setpoints Key Quick Reference...................................................................................... 116
16 Unit Keys Programming Quick Reference..................................................................... 120
17 Discharge Air Temperature Control – 6 Compressors ................................................. 122
18 Discharge Air Temperature Control – 4 Compressors ................................................. 122
19 Discharge Air Temperature Control – 3 Compressors ................................................. 122
20 Discharge Air Temperature Control – 2 Compressors ................................................. 122
21 Condenser Fan Control Using Outdoor Ambient
Temperature And Discharge Pressure .......................................................................... 124
22 Condenser Fan Control Using Discharge Only............................................................. 124
23 Low Ambient Condenser Fan Control – Ambient
Temperature And Discharge Pressure Control ............................................................. 125
24 Low Ambient Condenser Fan Control – Discharge
Pressure Control ............................................................................................................ 125
25 Compressor Operation – Load Limiting........................................................................ 126
26 Microboard Binary Inputs................................................................................................ 131
27 Microboard Analog Inputs............................................................................................... 131
28 Microboard Outputs ........................................................................................................ 131
29 Outdoor Air Sensor – Temperature/Voltage/Resistance
Correlation ...................................................................................................................... 134
30 Discharge Air Temperature Sensor – Temperature
Voltage/Resistance Correlation ..................................................................................... 134
31 Suction Temperature Sensor – Temperature/
Voltage/Resistance Correlation ..................................................................................... 135
32 Discharge Pressure Transducer Pressure
To Voltage Conversion Formula ..................................................................................... 136
33 Suction Pressure Transducer Pressure To
Voltage Conversion Formula.......................................................................................... 136
34 Keypad Pin Assignment Matrix....................................................................................... 137
35 Troubleshooting Charts ..........................................................................................139-141
36 ISN Received Data ......................................................................................................... 143
37 ISN Transmitted Data ..................................................................................................... 143
38 ISN Transmitted Data ..................................................................................................... 144
39 ISN Operational and Fault Codes .................................................................................. 145

YORKINTERNATIONAL
4
LIST OF FIGURES
1 Refrigerant Flow Diagram .................................................................................... 8
2 Multipoint Power Supply Wiring – Standard Unit ............................................... 18
3 Single Point Power Supply Wiring...................................................................... 19
4 Optional Single Point Power Supply Wiring –
N-F Disc Switch Or Circuit Breaker .................................................................... 20
5 CTB1 Field Control Wiring.................................................................................. 21
6 CTB2 Field Control Wiring.................................................................................. 21
7 CTB3 Field Control Wiring.................................................................................. 22
8 Discharge Air Sensor Field Wiring..................................................................... 23
9 Optional Suction Temperature Sensor Field Wiring .......................................... 23
10 Discharge Air Temperature Control ................................................................. 121
11 Suction Pressure Control ................................................................................. 123
12 Field & Factory Electrical Connections – Optional
Remote Temperature Reset Board................................................................ 128
13 Microboard Layout ............................................................................................ 132
14 Microboard Relay Contacts .............................................................................. 137
15 Printer Electrical Connections.......................................................................... 138
16 Elementary Diagram ........................................................................................ 146
17 Elementary Diagram ........................................................................................ 150
18 Elementary Diagram ........................................................................................ 154
19 Elementary Diagram ........................................................................................ 158
20 Type CP-1 ......................................................................................................... 164
21 Type CP-2 ......................................................................................................... 164
22 R-Spring Seismic Isolators.............................................................................. 165
23 Type CP Mounting............................................................................................. 166
24 “AEQM”Spring-FlexMounting........................................................................... 167

YORKINTERNATIONAL
FORM150.63-NM2
5
MANUAL USAGE AND REVISIONS
In complying with YORK’s policy for continuous product improvement, the information contained in this document is
subject to change without notice. While YORK makes no commitment to update or provide current information auto-
matically to the manual owner, that information, if applicable, can be obtained by contacting the nearest YORK
Serviceoffice. It istheresponsibility of operating/servicepersonnel to verifytheapplicability ofthesedocuments to the
equipment in question. If there is any question in the mind of operating/service personnel as to the applicability of
thesedocuments, verification with the equipment owner pertainingto equipmentmodifications andcurrent literature
shouldbe madeprior tooperating orservicing theequipment.
Thisdocument is intendedfor useby owner-authorized operating/servicepersonnel. Itis expected thatanyone oper-
atingor servicing thisequipment possessesthe knowledge thatwill enablethem to performtasks properly andsafely.
It is essential that prior to performing any task on this equipment, the individual shall have read and understood this
documentand any referencedmaterials. This individualshall alsocomplywith allapplicable governmental standards
and regulations pertaining to the task in question.
Itis theobligation and responsibility of operating/servicepersonnel towork safely. Failure to complywith anyof these
requirements could result in serious damage to the equipment and/or the property in which it is situated, as well as
severe personal injury or death to people at the site.
GENERAL SAFETY GUIDELINES
During installation, operation, maintenance or service, individuals may be exposed to certain components or condi-
tionsincluding, butnot limited to,refrigerants, oils,materials under pressure,rotating components,and both highand
lowelectrical voltages.Each ofthese itemshas thepotential, ifmisused orhandled improperly, to cause bodily injury
ordeath. Itis essentialthat operating/service personnel identify and recognize theseinherent hazards,protect them-
selves, and proceed safely in completing their tasks.
Workonelectronic equipment should not be undertaken unlessthe individual(s) have been trained
in the proper maintenance of equipment and is (are) familiar with its potential hazards.
Shut off power supply to the equipment before beginning work and follow lockout procedures.
When working inside equipment with power off, take care to discharge every capacitor likely to
holddangerous potential.
Be careful not to contact high voltage connections when installing or operating this equipment.
LOW VOLTAGE
DO NOT be misled by the term “low voltage.” Voltages as low as 50 volts may cause death.
WARNING
HIGH VOLTAGE
Is used in the operation of this equipment.
DEATH OR SERIOUS INJURY
may result if personnel fail to observe safety precautions.