York YCAS0098EB, Installation Operation & Maintenance, Page: 5 / 184

5
JOHNSON CONTROLS
FORM 201.18-NM7
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
115VAC 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 ................................................34
Remote Print ..........................................................34
Remote Setpoint Offset – Temperature ..................34
Remote Setpoint Offset – Current .........................34
Power and Control Panel Layouts
(Wye-Delta Typical) ................................................35
Option 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
Glycol Correction Factors ......................................45
Temperature and Flows ..........................................46
Physical Data (English Units) .................................47
Physical Data (SI Units) ..........................................48
Operating Limitations & Sound Power Data .......49
Electrical Data ........................................................50
Multiple Point Power Supply Connection .............50
Optional Single-Point Power Supply Connection
and Individual System Circuit Breakers ................52
Optional Single-Point Power Supply Connection
with Field Supplied Circuit Protection ..................54
Optional Single-Point Power Supply
Connection to Factory Circuit Breaker ..................56
Compressor Data ...................................................57
Fan Data .................................................................57
Electrical Notes ........................................................58
Wiring Diagram – Across-the-Line Start ..............60
Elementary Diagram – Across-the-Line Start ......62
Wiring Diagram – Wye-Delta Start ......................64
Elementary Diagram – Wye-Delta Start ...............66
Control Panel Component Locations ....................68
Power Panel Component Locations .......................69
Connection Diagram ...............................................70
Connection Diagram (System Wirng) ...................72
Compressor Terminal Box .....................................73
Dimensions ..............................................................76
YCAS0098EB - 0118EB (English) ......................76
YCAS0098EB - 0118EB (SI) ...............................78
YCAS0128EB (English) .....................................80
YCAS0128EB (SI) ...............................................82
YCAS00138EB (English) ....................................84
YCAS00138EB (SI) .............................................86
YCAS0148EB - 0178EB (English) .....................88
YCAS0148EB - 0178EB (SI) ...............................90
YCAS0198EB - 0208EB (English) .....................92
YCAS0198EB - 0208EB (SI) ...............................94
Clearances ................................................................96
Operating Weights – Alum. Fin & Black Fin Coils ...97
Isolation Selection – Alum. Fin & Black Fin Coils ...98
Weight Distribution and Isolator Mounting
Positions (Alum. Fin & Black Fin Cond. Coils)....99
Operating Weights – Copper Fin Condenser Coils .
(or Aluminum Fin with Optional Silencer Kits) ....102
Isolation Selection – Copper Fin CondenserCoil (or
Aluminum Fin with Optional Silencer Kits) .......103
Operating Weights – Copper Fin Condenser Coils
with Optional Silencer Kits ....................................104
Isolation Selection – Copper Fin Condenser Coils
with Optional Silencer Kits .........................................105
Installation Instructions for VMC Series
AWR/AWMR and CP Restrained Mountings.....106
Refrigerant Flow Diagram ...................................107
Process and Instrumentation Diagram ...............108
Component Locations ..........................................109
Compressor Components ..................................... 110
System Start-up Checklist .................................... 116
Unit Checks ......................................................... 116
Panel Checks ....................................................... 117
Programmed Values .............................................. 117
Initial Start-up ....................................................... 118
Checking Subcooling and Superheat .................. 118
Checking Economizer Superheat ......................... 119
Leak Checking ....................................................... 119