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MILLENIUM YCAS Series
York MILLENIUM YCAS Series - User Manual
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INSTALLATION, OPERATION & MAINTENANCE
MILLENNIUM
®
AIR-COOLED SCREW LIQUID CHILLERS
New Release
Form 201.18-NM6 (800)
MILLENNIUM
®
YCAS AIR-COOLED SCREW LIQUID CHILLERS
YCAS0283 through YCAS0343
YCAS 2 SYSTEM EPROM
031-01798-001
(ST
ANDARD, BRINE & METRIC MODELS COMBINED)
00397VIP(R)
2
Table of Contents
Main Page
Default Chapter
2
Table of Contents
2
Section 1 General Chiller Information & Safety
6
Introduction
6
Warranty
6
Safety
6
Standards for Safety
6
Responsibility for Safety
7
About this Manual
7
Misuse of Equipment
7
Suitability for Application
7
Structural Support
7
Mechanical Strength
7
General Access
7
Pressure Systems
7
Electrical
7
Rotating Parts
8
Sharp Edges
8
Refrigerants and Oils
8
High Temperature and Pressure Cleaning
8
Emergency Shutdown
8
Material Safety Data
9
Section 2 Product Description
12
Introduction
12
General Description
12
Compressor
12
Evaporator
13
Condenser
13
Economizer
14
Suction Line Heat Exchanger
14
Oil Separator/System
14
Oil Cooling
15
Capacity Control
15
Power and Control Panel
15
Microprocessor Controls
15
Motor Current Protection
16
Motor Protection Module
16
Current Overload
17
Thermal Overload
17
Current Imbalance
17
Improper Phase Sequence/Loss of Phase
17
Motor Protector Dip Switch Settings
18
Motor Starting
20
Keypad Controls
20
Display
20
Entry
21
Setpoints
21
Clock
21
Print
21
Program
21
Accessories and Options
21
Multiple Point Power Connection (Standard)
21
Single-Point Power Connection with Individual Circuit Protection
21
Single-Point Power Connection with Combined Circuit Protection
21
Single-Point Power Connection Without Circuit Protection
21
DX Cooler Options
22
Pressure
22
1-1/2" (38 MM) Insulation
22
Flange Accessory
22
Remote DX Cooler
22
Flow Switch Accessory
22
Star-Delta Compressor Motor Starter
22
Unit Enclosures
22
Fans
22
Sound Reduction Options
22
Unit Nomenclature and Nameplate Engineering Data
23
Basic Part Number
23
Options Section of Part Number
24
Section 3 Handling and Storage
25
Delivery 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
Installation of Vibration Isolators
28
Installation
28
Shipping Braces
28
Pipework Connection
28
General Requirements
28
Water Treatment
29
Pipework Arrangement
30
Connection Types & Sizes
30
Cooler Connections
30
Option Flanges
30
Refrigerant Relief Valve Piping
30
Ductwork Connection
30
General Requirements
30
Electrical Connection
31
Power Wiring
31
Standard Units with Multi Point Power Supply Wiring
31
Units with Single-Point Power Supply Wiring
31
115VAC Control Supply Transformer
31
Remote Emergency Stop Device
32
Control Panel Wiring
32
Volts Free Contacts
32
Chilled Liquid Pump Starter
32
Run Contact
32
Alarm Contacts
32
System Inputs
32
Flow Switch
32
Remote Run/Stop
32
Remote Print
32
Power and Control Panel Layouts (Wye-Delta Typical)
33
Options Panel Layout (Typical)
34
Logic Section Layout
35
Logic Section Layout with Control Panel Layout
36
Customer Connections
37
Section 5 Commissioning
39
Preparation
39
Preparation - Power off
39
First Time Start-Up
41
Section 6 Operation
42
General Description
42
Start-Up
42
Normal Running and Cycling
42
Shutdown
42
Section 7 Technical Data
43
Flow Rate and Pressure Drop Charts
43
Glycol Correction Factors
43
Temperature and Flows
44
Physical Data (si Units)
45
Operating Limitations & Sound Power Data
46
Electrical Data
48
Multiple Point Power Supply Connection
48
Optional Single-Point Power Supply Connection and Individual System Circuit Breakers
50
Optional Single-Point Power Supply
50
Optional Single-Point Power Supply Connection with Field Supplied Circuit Protection
52
Connection to Factory Circuit Breaker
54
Compressor Data
55
Fan Data
55
Electrical Notes
56
Wiring Diagram Across-The-Line Start
57
Elementary Diagram - Across-The-Line Start
60
Wiring Diagram Wye-Delta Start
62
Elementary Diagram - Wye-Delta Start
64
Panel Component Locations
66
Connection Diagram
70
Compressor Terminal Box
71
Dimensions
72
Ycas02830 - 0343 (Si)
72
Clearances
74
Weight Distribution and Isolator Mounting Positions
75
Installation Instructions for VMC Series AWR/AWMR and CP Restrained Mountings
83
Refrigerant Flow Diagram
84
Process and Instrumentation Diagram
85
Component Locations
86
Compressor Components
87
System Startup Checklist
93
Unit Checks
93
Panel Checks
94
Initial Start-Up
95
Checking Subcooling and Superheat
95
Checking Economizer Superheat
96
Leak Checking
96
Section 8 Micro Panel Contents
97
Chiller Control Panel Programming and Data Access Keys
97
Display and Status Information Keys
97
ON / off Rocker Switch
97
Program & Setup Keys
97
1 Introduction & Physical Description
98
1.1 General
98
1.2 Keypad & Display
98
1.3 Unit (Chiller) on / off Switch
99
1.4 Microprocessor Board
99
1.5 Ancillary Circuit Boards
99
1.6 Circuit Breakers
100
Current Transformers (C.T.)
100
Transformers
100
Motor Protection Modules
101
EMS/BAS Controls
103
Microprocessor Board Layout
105
Logic Section Layout
106
Anti-Recycle Timer
107
Anti-Coincidence Timer
107
Evaporator Pump Control
107
Compressor Heater Control
107
Evaporator Heater Control
107
Pumpdown (LLSV) Control
107
Alarms
107
Run Status (Chiller)
108
Lead / Lag Compressor Selection
108
2 Status Key: General Status Messages and Fault Warnings
109
General
109
General Status Messages
109
Unit Warnings
110
Anticipation Control Status Messages
111
Unit Fault Status Messages
112
System Fault (Safety) Status Messages
113
Printout on Fault Shutdown
116
3 Display Keys & Option Switches
117
General
117
Chilled Liquid Temps Key
117
System # Data Keys
118
Ambient Temp Key
118
Motor Current Key
119
Operating HRS / Start Counter Key
119
Options Key & Dip Switch Settings
119
Function Key
121
4 Print Keys
122
General
122
Oper Data Key
122
Operating Data - Local Display Messages
122
Operating Data - Remote Printout
123
History Key
125
Fault History Data - Local Display Messages
125
Fault History Data - Remote Printout
128
5 Entry Keys
129
General
129
Numerical Keypad
129
Enter Key
129
Cancel Key
129
Keys
129
6 Setpoints Keys & Chilled Liquid Control
130
General
130
Chilled Liquid Temperature Control
130
Local Cooling Setpoints Key
133
Remote Cooling Setpoints Key
133
7 Clock Keys
134
General
134
Set Time Key
134
Set Schedule / Holiday Key
135
Manual Override Key
136
8 Program Key
137
General
137
Program Key - User Programmable Values
137
Programming "Default" Values
141
Condenser Fan Control
142
Section 9 Maintenance
146
General Requirements
146
Daily Maintenance
146
Scheduled Maintenance
146
Chiller/Compressor Operating Log
146
Compressor Unit Operation
147
Maintenance Requirements
148
General Periodic Maintenance Checks Standard Units
149
Section 10 Spare Parts
150
Recommended Spares
150
Recommended Compressor Oils
150
Associated Drawings
150
Section 11 Troubleshooting
151
Competent Persons Troubleshooting Guide
151
Sensor Calibration Charts
153
Limited Warranty Applied Systems
154
Temperature Conversion Chart
155
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York MILLENIUM YCAS Series Specifications
General
Brand
York
Model
MILLENIUM YCAS Series
Category
Chiller
Language
English
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