York Millennium YCAS Series, Installation Operation & Maintenance

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YORK INTERNATIONAL
FORM 201.18-NM4
TABLE OF CONTENTS (CONT’D)
General Requirements ............................................... 32
Electrical Connection .............................................. 33
Power Wiring .......................................................... 33
Standard Units with Multi Point Power Supply
Wiring ..................................................................... 33
Units with Single-Point Power Supply Wiring ........ 33
115V Control Supply Transformer ...................... 33
Remote Emergency Stop Device ............................. 34
Control Panel Wiring ............................................ 34
Volts Free Contacts ................................................ 34
Chilled Liquid Pump Starter .................................... 34
Run Contact ............................................................. 34
Alarm Contacts ........................................................ 34
System Inputs ......................................................... 34
Flow Switch ............................................................. 34
Remote Run / Stop Switch ........................................ 34
Remote Print .............................................................. 34
Remote Setpoint Offset – Temperature ..................... 34
Remote Setpoint Offset – Current ............................. 34
Power and Control Panel Layouts
(Wye-Delta Typical) ................................................. 35
Options Panel Layout (Typical) ............................... 36
Logic Section Layout .............................................. 37
Logic Section Layout with Control
Panel Layout ............................................................ 38
Customer Connections ........................................... 39
SECTION
5
COMMISSIONING
Preparation ............................................................. 41
Preparation – Power Off ......................................... 41
First Time Start-up ................................................. 43
SECTION 6 OPERATION
General Description ................................................ 44
Start-up .................................................................... 44
Normal Running and Cycling ................................. 44
Shutdown ................................................................. 44
SECTION
7
TECHNICAL DATA
Flow Rate and Pressure Drop Charts ..................... 45
Temperature and Flows ........................................... 46
Physical Data (SI Units) .......................................... 47
Operating Limitations & Sound Power Data ......... 48
Electrical Data ......................................................... 50
Multiple Point Power Supply Connection ................ 50
Optional Single-Point Power Supply Connection
with Individual System Circuit Breakers ................ 50
Control Power Supply ............................................... 52
Electrical Notes ....................................................... 53
3 & 4 Compressor Power Connection Options ......... 54
Compressor Data ...................................................... 56
Fan Data .................................................................... 56
Elementary Diagram – Across-the-Line Start ....... 57
Wiring Diagrams–Across-the-Line Start and Wye-
..
Delta Start (YCAS0693 - YCAS0953) ................... 59
Standard 3 Compressor Power Supplies
Wye-Delta Start ...................................................... 60
Wiring Diagram – Across-the Line Start ............. 61
Standard Compressor Power Supplies –
Across-the Line Start and Wye-Delta Start .......... 62
Connection Diagram ............................................. 63B
Connection Diagram – Electrical Box .................. 67B
Elementary Diagram DXST Direct Drive
Control Circuit ....................................................... 69
Connection Diagram System Wiring –
Standard and Remote Evap. Units ............................ 72
Elementary Diagram DXST Direct Drive
Power Circuit .......................................................... 74
Wiring Diagram –Across-the -Line Start and
Wye-Delta Start (YCAS1062 - YCAS1263) .......... 76
Standard 4 Compressor Power Supplies
Wye-Delta Start ...................................................... 77
Standard Compressor Power Supplies – Across-the-
Line Start (YCAS1063 - YCAS1263) ......................... 78
Standard Compressor Power Supplies
(YCAS1063 - YCAS1263) ....................................... 80
Connection Diagram Systems 1 & 2 ...................... 84
Connection Diagram Systems 3 & 4 .................... 85B
Connection Diagram – Electrical Box .................... 88
Elementary Diagram DXST Direct Drive
Control Circuit ....................................................... 90
Connection Diagram System Wiring –
Standard and Remote Evap. Units ............................ 93
Compressor Terminal Box – Systems 1- 4 ............. 95
Dimensions ............................................................. 96
YCAS0693 - 0773 (SI) ................................................ 96
YCAS0783 - 0953 (SI) ................................................ 98
YCAS1063 (SI) ........................................................ 100
YCAS1093 (SI) ........................................................ 102
YCAS1163 - 1263 (SI) .............................................. 104
Clearances ............................................................ 106
Operating Weights – Aluminum Fin Coils .......... 107
Isolator Selection – Aluminum Fin Coils ............. 108
Operating Weights – Copper Fin Coils ................ 109
Isolator Selection – Aluminum Fin Coils .............. 110
Isolator Details ....................................................... 111
Installation Instructions for VMC Series
AWR/AWMR and CP Restrained Mountings ....... 113
Refrigerant Flow Diagram ..................................... 114
Process and Instrumentation Diagram ................. 115
Component Locations – 3 Compressor Units ........ 116
Component Locations – 4 Compressor Units ........ 117