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York YCAS0373SC manual available for free PDF download: Installation Operation & Maintenance
York YCAS0373SC Installation Operation & Maintenance (192 pages)
AIR-COOLED SCREW LIQUID CHILLERS
Brand:
York
| Category:
Chiller
| Size: 4.43 MB
Table of Contents
Table of Contents
4
Section 1 - General Chiller
9
Warranty
9
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
10
Rotating Parts
11
Sharp Edges
11
Refrigerants and Oils
11
High Temperature and Pressure Cleaning
11
Emergency Shutdown
11
Responsibility for Safety
10
Fig. 1 - Component Locations
12
Evaporator
13
Condenser
13
Introduction
12
General Description
12
Compressor
12
Introduction
9
Safety
9
Standards for Safety
9
Section 2 - Product Description
12
Fig. 2 - Screw Compressor
13
Economizer
14
Oil Separator/System
14
Oil Cooling
14
Capacity Control
14
Power and Control Panel
14
Each Power Compartment Contains
15
The Control Section Contains
15
The Options Sections Contain
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
TABLE 1 - Motor Protector Dip Switch Setting
18
Keypad Controls
20
Display
20
Program
21
Motor Starting
20
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
Control Circuit Terminal Block
21
Building Automation System (BAS) Interface
21
Condenser Coil Protection
21
DX Evaporator and Starter Options
22
Fan Options
22
Sound Reduction Options
22
Unit Enclosures Options
22
Vibration Isolation
22
Nameplate Engineering Data
23
Unit Nomenclature
23
Product Identification Number (Pin)
24
Delivery and Storage
25
Inspection
25
Moving the Chiller
25
Lifting Weights
25
Section 3 - Handling and Storage
25
Fig. 3 - Unit Rigging
26
Fig. 4 - Lifting Lugs
26
Unit Rigging
26
Indoor Installations
27
Location Clearances
27
Location Requirements
27
Outdoor Installations
27
Section 4 - Installation
27
Compressor Feet Bolt Removal
28
Fig. 5 - Compressor Mounting
28
Pipework Connection
29
General Requirements
29
Shipping Braces
29
Vibration Isolators
29
Installation
29
Water Treatment
30
Connection Types & Sizes
31
Ductwork Connection
31
General Requirements
31
Evaporator Connections
31
Optional Flanges
31
Fig. 7 - Victaulic Groove
31
Fig. 8 - Flange Attachments
31
Pipework Arrangement
31
Refrigerant Relief Valve Piping
31
115Vac Control Supply Transformer
32
Remote Emergency Stop Device
33
Electrical Connection
32
Power Wiring
32
Standard Units with Multi Point Power Supply Wiring
32
Units with Single-Point Power Supply Wiring
32
Control Panel Wiring
33
System Inputs
33
Flow Switch
33
Remote Run / Stop
33
Remote Print
33
Volts Free Contacts
33
Chilled Liquid Pump Starter
33
Run Contact
33
Alarm Contacts
33
Fig. 9 - Power Panel Section
34
Fig. 10 - Option Panel Section
35
Fig. 11 - Logic Section Layout
36
Fig. 12 - Logic Section Layout with
37
Preparation
40
Preparation - Power off
40
Inspection
40
Refrigerant Charge
40
Valves
40
Compressor Oil
40
Fans
40
Isolation/Protection
40
Control Panel
40
Switch Settings
41
Crankcase Heaters
41
Water System
41
Flow Switch
41
Temperature Sensor(S)
41
Control Supply
41
Programmed Options
41
Programmed Settings
41
Date and Time
41
Start/Stop Schedule
41
Section 5 - Commissioning
40
First Time Start-Up
42
Interlocks
42
System Switches
42
Start-Up
42
Oil Pressure
42
Refrigerant Flow
42
Fan Rotation
42
Suction Superheat
42
Expansion Valve
42
Economizer Superheat
42
General Description
44
Normal Running and Cycling
44
Section 6 - Operation
44
Shutdown
44
Start-Up
44
Fig. 15 - Flow Rate and Pressure Drop
46
Fig. 16 - Glycol Correction Factors
46
Flow Rate and Pressure Drop Charts
46
Glycol Correction Factors
46
Section 7 - Technical Data
46
Temperature and Flows
47
Physical Data
48
Operating Limitations and Sound Power Data
49
Electrical Data
50
Electrical Notes
58
Fig. 17 - Wiring Diagram - Across-The-Line Start
60
Wiring Diagram
60
Fig. 18 - Wiring Diagram - Across-The-Line Start
61
Elementary Diagram
62
Fig. 19 - Elementary Diagram - Across-The-Line Start
62
Fig. 20 - Wiring Diagram - Wye-Delta Start
64
Fig. 21 - Elementary Diagram - Wye-Delta Start
65
Fig. 22 - Elementary Diagram - Wye-Delta Start
66
Connection Diagram (System Wiring)
73
Compressor Terminal Box
74
Dimensions-Ycas0373-Ycas0503
78
Dimensions-Ycas0543-Ycas0653
80
Technical Data
82
Weight Distribution and Isolator Mounting Positions
83
Fig. 28 - Cp-2-XX
84
Fig. 30 - Cp-2-XX
92
Fig. 32 - Cp-2-XX
96
Installation Instructions for VMC Series Awr/Awmr and Cp Restrained Mountings
99
Component Locations
102
Compressor Components
103
System Startup Checklist
109
Unit Checks (no Power)
109
Panel Checks
110
Programmed Values
110
Checking Subcooling and Superheat
111
Initial Start-Up
111
Checking Economizer Superheat
112
Leak Checking
112
Chiller Control Panel
114
Display and Status Information Keys
114
On / off Rocker Switch
114
Program & Setup Keys
114
Programming and Data Access Keys
114
1 Introduction & Physical Description
115
1.1 General
115
1.2 Keypad & Display
115
1.3 Unit (Chiller) on / off Switch
116
1.4 Microprocessor Board
116
1.5 Ancillary Circuit Boards
116
1.6 Circuit Breakers
117
1.8 Transformers
117
1.9 Motor Protection Modules
117
EMS/BAS Controls
120
Microprocessor Board Layout
122
Logic Section Layout
123
Anti-Recycle Timer
124
Anti-Coincidence Timer
124
Evaporator Pump Control
124
Compressor Heater Control
124
Evaporator Heater Control
124
Pumpdown (EEV) Control
124
Alarms
125
Run Status (Chiller)
125
Lead / Lag Compressor Selection
125
Economizer Solenoid Control
126
2 Status Key: General Status Messages & Fault Warnings
128
General
128
General Status Messages
128
Unit Warnings
129
Anticipation Control Status
130
Unit Fault Status Messages
131
System Fault (SAFETY) Status
132
Printout on Fault Shutdown
135
3 Display Keys & Option Switches
136
General
136
Chilled Liquid Temps Key
136
System # Data Keys
137
Ambient Temp Key
137
Motor Current Key
138
Operating Hrs / Start Counter Key
138
Options Key
138
Fig. 49 - Enlarged Photograph of Dip Switches on Microprocessor Board
139
Function Key
140
4 Print Keys
141
General
141
Oper Data Key
141
Operating Data - Software Version
141
Operating Data - Remote Printout
143
History Key
144
Fault History Data - Local Display Messages
144
Fault History Data - Remote Printout
148
5 Entry Keys
149
General
149
Numerical Keypad
149
Enter Key
149
Cancel Key
149
Keys
149
6 Setpoints Keys & Chilled Liquid Control
150
General
150
Chilled Liquid Temperature Control
150
Local Cooling Setpoints Key
154
Remote Cooling Setpoints Key
154
7 Clock Keys
155
General
155
Set Time Key
155
Set Schedule / Holiday Key
156
7.4 Manual Override Key
157
8 Program Key
158
General
158
Program Key - User Programmable Value
158
Programming "Default" Values
162
8.4 Electronic Expansion Valve
164
8.5 Eev Operation
165
8.6 Eev Programming
167
(Minimum/Maximum)
167
TABLE 2 - Programmable Values Table
167
8.7 Eev Troubleshooting
168
8.8 Condenser Fan Control
169
Data for DXST Units with 4 Fans/System
170
Data for DXST Units with 5 Fans/System
170
TABLE 3 - Condenser Fan Control and Fan Contactor
170
TABLE 4 - Condenser Fan Control and Fan Contactor
170
8.9 Service Mode: Unit Setup
171
TABLE 5 - Service Mode Programmable Values
171
TABLE 6 - YCAS Style G, Across the Line Start
172
TABLE 7 - YCAS Style G, Wye Delta Start
172
8.10 Sensor Calibration Charts
174
8.11 Control Inputs/Outputs
175
TABLE 8 - Digital Outputs
175
TABLE 9 - Analog Inputs
176
TABLE 10 - Digital Inputs
177
TABLE 11 - Analog Outputs
177
8.12 Isn Control
178
TABLE 12 - ISN Received Data
178
TABLE 13 - ISN Transmitted Data
178
TABLE 14 - ISN Operational and Fault Codes
181
Section 9 - Maintenance
182
General Requirements
182
Condenser Coils
182
Chiller / Compressor Operating Log
183
Scheduled Maintenance
183
On-Board Battery Back-Up
183
Overall Unit Inspection
183
Compressor Unit Operation
184
General Periodic Maintenance Checks
186
Standard Units
186
Recommended Spares
187
Recommended Compressor Oils
187
Troubleshooting Guide
188
Limited Warranty York Americas Engineered Systems
190
Warranty on New Equipment
190
Warranty on Reconditioned
190
Replacement Materials
190
Temperature Conversion Chart
191
Actual Temperatures
191
Temperature Conversion Chart Differential Temperatures
191
Pressure Conversion Chart - Gauge or Differential
191
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