York YCAS Series User Manual

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YORK INTERNATIONAL
FORM 201.19-NM8 (804)
TABLE OF CONTENTS
SECTION 1 - GENERAL CHILLER
INFORMATION & SAFETY.........9
INTRODUCTION........................................................9
WARRANTY ...............................................................9
SAFETY......................................................................9
Standards for Safety ......................................................9
RESPONSIBILITY FOR SAFETY ............................10
ABOUT THIS MANUAL ............................................10
MISUSE OF EQUIPMENT .......................................10
Suitability for Application...........................................10
Structural Support........................................................10
Mechanical Strength....................................................10
General Access ............................................................10
Pressure Systems .........................................................10
Electrical......................................................................11
Rotating Parts ..............................................................11
Sharp Edges.................................................................11
Refrigerants and Oils...................................................11
High Temperature and Pressure Cleaning ...................11
EMERGENCY SHUTDOWN .................................... 11
SECTION 2 - PRODUCT DESCRIPTION........12
INTRODUCTION......................................................12
General Description.....................................................12
Compressor..................................................................12
Evaporator ...................................................................13
Condenser....................................................................13
Economizer..................................................................14
Oil Separator/System...................................................14
Capacity Control..........................................................15
Power and Control Panel.............................................15
Microprocessor Controls .............................................15
Motor Current Protection ............................................15
Motor Protection Modules (2ACE).............................16
Current Overload.........................................................16
Thermal Overload........................................................17
Current Imbalance (Loaded & Unloaded)/..................17
Loss of Phase...............................................................17
Improper Phase Sequence............................................17
MOTOR STARTING .................................................20
KEYPAD CONTROLS ..............................................20
Display.........................................................................20
Program .......................................................................21
ACCESSORIES AND OPTIONS .............................. 21
Multiple Point Power Connection ...............................21
Single-Point Power Connection with Individual Circuit
Protection ....................................................................21
Control Circuit Terminal Block...................................21
Building Automation System (BAS) Interface............21
Condenser Coil Protection ..........................................21
DX EVAPORATOR AND STARTER OPTIONS ........22
UNIT ENCLOSURE OPTIONS.................................22
FAN OPTIONS .........................................................22
SOUND REDUCTION OPTIONS.............................22
VIBRATION ISOLATION .........................................22
UNIT NOMENCLATURE ..........................................23
NAMEPLATE ENGINEERING DATA........................23
PRODUCT IDENTIFICATION NUMBER (PIN) ........24
DELIVERY AND STORAGE.....................................25
SECTION 3 - HANDLING AND STORAGE.....25
INSPECTION............................................................25
MOVING THE CHILLER...........................................25
Lifting Weights............................................................25
UNIT RIGGING.................................................26
SECTION 4 - INSTALLATION .........................27
LOCATION REQUIREMENTS .................................27
OUTDOOR INSTALLATIONS...................................27
INDOOR INSTALLATIONS.......................................27
LOCATION CLEARANCES ......................................27
COMPRESSOR FEET BOLT REMOVAL ................. 28
VIBRATION ISOLATORS ........................................ 29
Installation...................................................................29
SHIPPING BRACES ................................................29
PIPEWORK CONNECTION.....................................29
General Requirements .................................................29
WATER TREATMENT ..............................................30
PIPEWORK ARRANGEMENT .................................31
CONNECTION TYPES & SIZES..............................31
EVAPORATOR CONNECTIONS..............................31
Option Flanges.............................................................31
REFRIGERANT RELIEF VALVE PIPING ................. 31
DUCTWORK CONNECTION ...................................31
General Requirements .................................................31
ELECTRICAL CONNECTION ..................................32
POWER WIRING......................................................32
STANDARD UNITS WITH MULTI POINT POWER
SUPPLY WIRING .....................................................32
Units with Single-Point Power Supply Wiring............32
115VAC CONTROL SUPPLY TRANSFORMER....32
Remote Emergency Stop Device.................................33
CONTROL PANEL WIRING .....................................33
VOLTS FREE CONTACTS....................................33
Chilled Liquid Pump Starter........................................33
Run Contact.................................................................33
Alarm Contacts............................................................33
SYSTEM INPUTS.....................................................33
Flow Switch.................................................................33
Remote Run / Stop.......................................................33
Remote Print................................................................33
Remote Setpoint Offset – Temperature .......................33
Remote Setpoint Offset – Current...............................33

York YCAS Series Specifications

General

Brand	York
Model	YCAS Series
Category	Chiller
Language	English