York YLUA0078 Manuals

Manuals and User Guides for York YLUA0078. We have 1 York YLUA0078 manual available for free PDF download: Installation Operation & Maintenance

York YLUA0078 Installation Operation & Maintenance (164 pages)

AIR-COOLED SCROLL CONDENSING UNITS

Brand: York | Category: Heat Pump | Size: 8 MB

Table of Contents
5
Section 1 - General Equipment Information and Safety
11
Introduction
11
Compressors
11
Condenser
11
Refrigerant Circuit
11
Warranty
11
Safety and Quality
12
About this Manual
12
Misuse of Equipment
13
Section 2 - Product Description
15
Introduction
15
General System Description
15
FIGURE 1 - Compressors
15
Refrigerant Circuit
16
Microcomputer Control Center
16
High Ambient Kit
17
Communications
17
Power Panel
17
Accessories and Options
17
Unit Components
20
FIGURE 2 - Unit Components Front
20
FIGURE 3 - Power Panel Components
21
FIGURE 4 - Power Panel / Control Components
22
Nomenclature (Pin)
23
Basic Unit
23
Refrigerant Flow Diagram
27
FIGURE 5 - Refrigerant Flow Diagram
27
Process and Instrumentation Diagram
28
FIGURE 6 - Process and Instrumentation Diagram
28
Section 3 - Handling and Storage
29
Delivery and Storage
29
Inspection
29
Unit Rigging
29
FIGURE 7 - Unit Rigging
29
Section 4 - Installation
31
Installation Checklist
31
Handling
31
Location and Clearances
31
Spring Isolators (Optional)
32
Compressor Mounting
32
Pipework Arrangement
32
Ductwork Connection
32
Wiring
32
Compressor Heaters
33
Relief Valves
33
High Pressure Cutout
33
Electrical Wiring
33
Compressor Heaters
35
Refrigerant Piping
35
TABLE 1 - Fitting Equivalent Lengths
36
TABLE 2 - Refrigerant Piping Charges
36
TABLE 3 - Miscellaneous Liquid Line Pressure Drops
36
TABLE 4 - Refrigerant Line Connections
37
Oil Traps
38
Refrigerant Charge
38
Filter Driers/ Sight Glasses/Txv's
38
Refrigerant Piping Notes
39
TABLE 5 - Refrigerant Line Pressure Drops (English)
39
FIGURE 8 - Single-Point Supply Connection - Terminal Block, Non-Fused Disconnect Switch
40
FIGURE 9 - Discharge Air Sensor Field Wiring
40
Control Wiring
41
FIGURE 10 - Control Wiring
41
Section 5 - Technical Data
43
Operational Limitations (English)
43
TABLE 6 - Voltage Limitations
43
Physical Data (English)
44
TABLE 7 - Physical Data (English)
44
TABLE 8 - Micro Panel Power Supply
45
TABLE 9 - Voltage Range
45
TABLE 10 - Standard Efficiency Unit Electrical Data (4 Compr)
46
TABLE 11 - Standard Efficiency Unit Electrical Data (5 Compr)
46
TABLE 12 - Standard Efficiency Unit Electrical Data (6 Compr)
48
TABLE 13 - High Efficiency Unit Electrical Data (4 Compr)
48
TABLE 14 - High Efficiency Unit Electrical Data (5 Compr)
48
TABLE 15 - Standard Efficiency Unit Electrical Data (4 Compr)
50
TABLE 16 - Standard Efficiency Unit Electrical Data (5 Compr)
50
TABLE 17 - Standard Efficiency Unit Electrical Data (6 Compr)
52
TABLE 18 - High Efficiency Unit Electrical Data (4 Compr)
52
TABLE 19 - High Efficiency Unit Electrical Data (5 Compr)
52
TABLE 20 - Lug Sizing
54
Wiring Diagrams
60
FIGURE 11 - Elementary Wiring Diagram
60
FIGURE 12 - Power Options Connection Diagram
70
FIGURE 13 - Single Point and Dual Point Wiring
74
FIGURE 14 - Wiring
76
FIGURE 15 - Micro Panel Connections
78
FIGURE 16 - Elementary Diagram
80
Dimensions (English)
84
Clearances
87
FIGURE 17 - Unit Clearances - All Models
87
Weight Distribution and Isolator Mounting Positions
88
FIGURE 18 - Sample Printout Supplied in the Isolator Package and in the Chiller Panel Literature Packet
88
Isolator Information
89
Section 6 - Commissioning
95
Commissioning
95
Preparation - Power off
95
Preparation - Power on
96
Section 7 - Unit Controls
101
Introduction
101
Microprocessor Board
101
Unit Switch
102
Display
102
Keypad
102
Battery Back-Up
102
Transformer
102
Single System Select and Programming Number of Compressors
102
Status Key
103
FIGURE 19 - Status Key Messages Quick Reference List
107
Display/Print Keys
108
FIGURE 20 - Operation Data
111
Entry Keys
116
Setpoints Keys
117
TABLE 21 - Cooling Setpoints Programmable Limits and Defaults
122
TABLE 22 - Program and Defaults
122
FIGURE 21 - Setpoints Quick Reference List
123
Unit Keys
124
FIGURE 22 - Unit Keys Programming Quick Reference List
129
Section 8 - Unit Operation
131
Capacity Control
131
Suction Pressure Limit Controls
131
Discharge Pressure Limit Controls
131
Discharge Air Temperature Control
131
FIGURE 23 - Discharge Air Temperature Control
132
TABLE 23 - Discharge Air Temperature Control for 5 and 6 Compressors (7 and 8 Steps)
132
TABLE 24 - Discharge Air Temperature Control for 4 Compressors (6 Steps)
132
Suction Pressure Control
133
FIGURE 24 - Suction Pressure Control
133
System Lead/Lag
134
Compressor Lead/Lag
134
Anti-Recycle Timer
134
Anti-Coincidence Timer
134
Evaporator Blower Control
134
Pumpdown Control
134
FIGURE 25 - YLUA0078 - YLUA0095 Fan Location (Typical)
135
TABLE 25 - YLUA0078 - YLUA0095 Condenser Fan Control Using Outdoor Ambient Temperature and Discharge Pressure
135
TABLE 26 - YLUA0078 - YLUA0095 Condenser Fan Control Using Discharge Pressure Only
135
TABLE 27 - YLUA0078 - YLUA0095 Low Ambient Condenser Fan Control - Discharge Pressure Control
136
Condenser Fan Control
137
FIGURE 26 - YLUA0098 - YLUA0130 Fan Location
137
TABLE 28 - YLUA0098 - YLUA0130 Condenser Fan Control
137
FIGURE 27 - YLUA0148 - YLUA0158 Fan Location
138
TABLE 29 - YLUA0148 - YLUA0158 Condenser Fan Control
138
Load Limiting
139
Compressor Run Status
139
Alarm Status
139
TABLE 30 - Compressor Operation - Load Limiting
139
BAS/EMS Discharge Air Temperature Reset Using a Voltage or Current Signal
140
Section 9 - Service and Troubleshooting
141
Clearing History Buffers
141
Service Mode - Outputs
141
Service Mode - Condensing Unit Configuration
141
Service Mode - Analog and Digital Inputs
142
Control Inputs/Outputs
143
TABLE 31 - I/O Digital Inputs
143
TABLE 32 - I/O Digital Outputs
143
TABLE 33 - I/O Analog Inputs
143
TABLE 34 - I/O Analog Outputs
143
FIGURE 28 - Microboard Layout
144
Checking Inputs and Outputs
145
TABLE 35 - Outdoor Air Sensor Temperature/Voltage/Correlation
145
TABLE 36 - Discharge Air Temperature Sensor Temperature/Voltage/Resistance Correlation
146
TABLE 37 - Pressure Transducers
147
FIGURE 29 - I/O Board Relay Contact Architecture
148
Optional Printer Installation
149
FIGURE 30 - Printer to Microboard Electrical Connections
149
TABLE 38 - Troubleshooting
150
Section 10 - Maintenance
153
Important
153
Compressors
153
Condenser Fan Motors
153
Condenser Coils
153
Operating Parameters
153
On-Board Battery Back-Up
153
Overall Unit Inspection
153
ISN Control
154
TABLE 39 - ISN Received Data
154
TABLE 40 - ISN Transmitted Data
154
TABLE 41 - ISN Operational and Fault Codes
156
Bacnet and Modbus Data Communication
157
TABLE 42 - Minimum, Maximum and Default Values
158
TABLE 43 - Real Time Error Numbers
158
TABLE 44 - Serial Communication Analog Value Data
159
TABLE 45 - Serial Communication Binary Value Data
159
TABLE 46 - Serial Communication Analog Input Data
159
TABLE 47 - Serial Communication Binary Input Data
161
TABLE 48 - Temperature Conversion Chart - Actual Temperature
162
TABLE 49 - Temperature Conversion Chart Differential Temperatures
162
TABLE 50 - Pressure Conversion Chart - Gauge or Differential
163
TABLE 51 - R-410A Pressure Temperature Chart
163

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York YLUA0078 Installation Operation & Maintenance (164 pages)

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