York YLAA0457 Manuals

Manuals and User Guides for York YLAA0457. We have 1 York YLAA0457 manual available for free PDF download: Installation Operation & Maintenance

York YLAA0457 Installation Operation & Maintenance (146 pages)

Air-Cooled Scroll Chillers with Brazed Plate Heat Exchanger Style B 50 Hz 4 fan to 8 fan 55 Ton to 150 Ton 196 kW to 520 kW

Brand: York | Category: Chiller | Size: 9 MB

Read before Proceeding
2
General Safety Guidelines
2
Safety Symbols
2
Changeability of this Document
3
Revision Notes
3
Johnson Controls
3
Table of Contents
5
Section 1 - General Chiller Information and Safety
11
Introduction
11
Warranty
11
Handling
11
Safety and Quality
11
About this Manual
12
Misuse of Equipment
12
Suitability for Application
12
Structural Support
12
Rotating Parts
13
Sharp Edges
13
Refrigerants and Oils
13
FIGURE 1 - Emergency Shutdown Handle
14
Safety Labels
14
Introduction
15
Section 2 - Product Description
15
General System Description
15
Brazed Plate Evaporator
15
Communications
17
Building Automation System Interface
17
Power Panel
17
Accessories and Options
17
Single-Point Supply Terminal Block
17
Control Transformer
18
Control Options
18
FIGURE 2 - Unit Components (Front)
20
FIGURE 3 - Unit Components (Side)
21
FIGURE 4 - Power Panel Components
22
FIGURE 5 - Power Panel / Control Components
23
FIGURE 6 - Process and Instrumentation Diagram
24
Section 3 - Handling and Storage
25
Lifting Weights
25
Delivery and Storage
25
Inspection
25
Moving the Chiller
26
Unit Removal from Shipping Container
26
Lifting Using Lugs
26
Lifting Using Shackles
26
Section 4 - Installation
27
Installation Checklist
27
Startup/Commissioning
27
Location and Clearances
27
Spring Isolators (Optional)
28
Compressor Mounting
28
Remote Cooler Option
28
Chilled Liquid Piping
28
Pipework Arrangement
29
Wiring
29
FIGURE 7 - Chilled Liquid System
29
Relief Valves
30
High Pressure Cutout
30
Single-Point Supply Connection - Terminal Block, Non-Fused
31
Disconnect Switch or Circuit Breaker
31
Control Panel
31
FIGURE 8 - Single-Point Supply Connection - Terminal Block, Non-Fused Disconnect Switch
31
Flow Switch
32
FIGURE 9 - Control Wiring Inputs
32
FIGURE 10 - Control Wiring Outputs
33
Section 5 - Technical Data
35
Operational Limitations
35
TABLE 1 - Temperatures and Flows
35
High Efficiency
35
TABLE 2 - Physical Data (Metric)
37
Condenser Fans
37
Physical Data si
37
Electrical Data
39
Compressor Heaters
39
TABLE 3 - Micropanel Power Supply
39
TABLE 4 - Voltage Range
39
TABLE 5 - Electrical Data Without Pumps
40
TABLE 6 - Transformer Load
40
TABLE 7 - Cable Size
42
Electrical Notes
43
Electrical Notes
44
FIGURE 11 - Elementary Wiring Diagram
48
FIGURE 12 - Fan Wiring, Standard Low Sound or Ultra Quiet, YLAA0195 - YLAA0517
50
FIGURE 13 - Fan Wiring, Standard Low Sound or Ultra Quiet, YLAA0195 - YLAA0517
52
FIGURE 14 - Power Options Connection Diagram
54
FIGURE 15 - Power Panel
56
Dimensions
58
Dimensions
59
Weight Distribution and Isolator Mounting Positions
64
FIGURE 16 - Sample Printout Supplied in the Isolator Package and in the Chiller Panel Literature Packet
64
Clearances
65
FIGURE 17 - Unit Clearances - All Models
65
Four Fan Isolator Locations
66
Five and Six Fan Isolator Locations
66
Seven and Eight Fan Isolator Locations
67
Isolator Types
68
One Inch Deflection Spring Isolators Installation Instructions
69
Section 6 - Commissioning
71
Preparation - Power off
71
Preparation - Power on
72
Pre-Start-Up
73
Compressor Heater
73
Cooling Setpoints
74
Checking Superheat and Subcooling
74
Section 7 - Unit Controls
77
Introduction
77
IPU II and I/O Boards
77
Transformer
78
Display
78
Keypad
78
Unit Switch
78
Battery Back-Up
78
Programming # of Compressors
78
Unit Status
79
General Status Messages
79
Status Key
79
System Safeties
81
Unit Safeties
82
Unit Warning
83
FIGURE 18 - Status Key Messages Quick Reference List
84
Display/Print Keys
85
FIGURE 19 - Operation Data
88
History Printout
89
History Displays
90
Software Version
92
Entry Keys
93
Enter/Adv Key
93
Setpoints Keys
94
Remote Setpoint Control
95
Schedule/Advance Day Key
95
TABLE 8 - Cooling Setpoint, Programmable Limits and Defaults
96
Program Key
97
TABLE 9 - Program Key Limits and Default
98
FIGURE 20 - Setpoints Quick Reference List
100
Unit Keys
101
FIGURE 21 - Unit Keys Options Programming Quick Reference List
106
Bacnet, Modbus, N2 and Yorktalk 2 Communications
107
FIGURE 22 - Micro Panel Connections
108
TABLE 10 - Minimum, Maximum and Default Values
108
TABLE 11 - Values Required for Bas Communication
109
Setting Description
109
Communications Data Map Notes
110
Alarm Notification
110
TABLE 12 - Real Time Error Numbers
110
TABLE 13 - Native Bacnet, Modbus and N2 Communications Data Map
111
Yorktalk 2 Communications
114
Transmitted Data
114
TABLE 14 - Yorktalk 2 Communications Data Map
115
Unit Operating Sequence
119
Section 8 - Unit Operation
119
Capacity Control
119
Suction Pressure Limit Controls
120
Discharge Pressure Limit Controls
120
Leaving Chilled Liquid Control
120
FIGURE 23 - Leaving Water Temperature Control Example
120
Leaving Chilled Liquid Control Override to Reduce Cycling
121
FIGURE 24 - Setpoint Adjust
121
TABLE 15 - Sample Compressor Staging for Return Water Control
121
TABLE 16 - Return Chilled Liquid Control for 4 Compressors (6 Steps)
121
Leaving Chilled Liquid System Lead/Lag and Compressor Sequencing
122
Return Chilled Liquid Control
122
TABLE 17 - Lead/Lag Return Chilled Liquid Control for 4 Compressors (6 Steps)
122
Return Chilled Liquid System Lead/Lag and Compressor Sequencing
123
Anti-Recycle Timer
123
Anti-Coincidence Timer
123
Evaporator Pump Control and York Hydro Kit Pump Control
124
Evaporator Heater Control
124
Pumpdown Control
124
Standard Condenser Fan Control
124
FIGURE 25 - Condenser Fan Locations
124
TABLE 18 - YLAA Standard Condenser Fan Control Using Discharge Pressure Only (2, 3, or 4 Fans Per System)
125
TABLE 19 - YLAA Standard Condenser Fan Control Using Discharge Pressure Only
125
Load Limiting
127
Compressor Run Status
127
Alarm Status
127
TABLE 20 - Compressor Operation Load Limiting
127
Remote BAS/EMS Temperature Reset Using a Voltage or Current Signal
128
Section 9 - Service and Troubleshooting
129
Clearing History Buffers
129
Service Mode
129
Service Mode - Outputs
129
Service Mode - Chiller Configuration
130
Service Mode - Analog and Digital Inputs
130
Control Inputs/Outputs
131
TABLE 21 - I/O Digital Inputs
131
TABLE 22 - I/O Digital Outputs
131
TABLE 23 - I/O Analog Inputs
131
TABLE 24 - I/O Analog Outputs
131
FIGURE 26 - Microboard Layout
132
Checking Inputs and Outputs
133
TABLE 25 - Outdoor Air Sensor Temperature/Voltage/Correlation
133
Digital Inputs
133
TABLE 26 - Entering/Leaving Chilled Liquid Temp. Sensor, Temperature/Voltage Correlation
134
TABLE 27 - Pressure Transducers
135
Optional Printer Installation
136
FIGURE 27 - I/O Board Relay Contact Architecture
136
Assembly and Wiring
137
FIGURE 28 - Printer to Microboard Electrical Connections
137
Obtaining a Printout
137
Troubleshooting
138
TABLE 28 - Troubleshooting
138
Section 10 - Maintenance
141
Compressors
141
Condenser Fan Motors
141
Condenser MCHX Cleaning
141
Operating Parameters
142
On-Board Battery Back-Up
142
Brazed Plate Heat Exchanger (Evaporator) Heater
142
Overall Unit Inspection
142
R-410A Pressure Temperature Chart
144
Temperature
145
TABLE 29 - si Metric Conversion
145

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