Name: York YLAA0041
Brand: York
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YLAA0041 – YLAA0230

Air-Cooled Scroll Chillers

with Brazed Plate Heat Exchanger

Style B (60 Hz) 4 to 12 Fan

40 ton to 230 ton

140 kW to 800 kW

R-410A,

R-454B

Issue Date:

December 19, 2023

Air-Cooled Scroll Chiller

Installation, Operation, Maintenance

Supersedes: 150.72-ICOM6 (1023) Form 150.72-ICOM6 (1223)

Products are produced at a

f aci lit y who s e qua l it y -

management systems are

ISO9001 certified.

035-23572-100

Table of Contents5
Section 1: General Chiller Information and Safety11
Introduction11
Warranty11
Handling11
Safety and Quality12
About this Manual12
Misuse of Equipment12
Section 2: Product Description15
Introduction15
General System Description15
Table 1: Canadian Registration Numbers16
Communications17
Building Automation System Interface18
Power Panel18
Accessories and Options18
Figure 1: Unit Components, Front View21
Figure 2: Unit Components, Side View22
Figure 3: Power Panel Components23
Figure 4: Power Panel and Control Components24
Table 2: Complete Pin Number Description25
Figure 5: Process and Instrumentation Diagram31
Section 3: Handling and Storage33
Figure 6: Rigging and Lifting Label33
Delivery and Storage34
Inspection34
Moving the Chiller34
Figure 7: Unit Rigging/Lifting35
Lifting Weights36
Lifting Using Lugs36
Lifting Using Shackles36
Figure 8: Lifting Lugs36
Section 4: Installation37
Installation Checklist37
Location and Clearances37
Spring Isolators: Optional38
Compressor Mounting38
Chilled Liquid Piping38
Pipework Arrangement39
Wiring39
Figure 9: Chilled Liquid System39
Relief Valves40
High Pressure Cutout40
Single-Point Supply Connection - Terminal Block, Non-Fused Disconnect Switch or Circuit Breaker41
Figure 10: Single-Point Supply Connection - Terminal Block, Non-Fused Disconnect Switch or Circuit Breaker41
Figure 11: Control Wiring Inputs42
Table 3: Chemical Specification of Water43
Figure 12: Thermal Dispersion Flow Switch44
Figure 13: Wiring of Thermal Dispersion Flow Switch44
Figure 14: Control Wiring Outputs46
Section 5: Technical Data47
Table 4: Temperatures and Flows47
Table 5: Ethylene and Propylene Glycol Correction Factors49
Physical Data YLAA0041 to YLAA0230, 60 Hz50
Table 6: Physical Data and Nominal Data50
Electrical Data57
Compressor Heaters57
Table 7: Micropanel Power Supply57
Table 8: Voltage Range57
Table 9: Pump Electrical Data 60 Hz58
Table 10: Transformer Load58
Table 11: Electrical Data Without Pumps, R-410A59
Table 12: Electrical Data Without Pumps R-454B65
Table 13: Wiring Lugs70
Electrical Notes73
Figure 15: Elementary Wiring Diagram78
Figure 16: Elementary Wiring Diagram79
Figure 17: Fan Wiring, Standard Air Flow82
Figure 18: Fan Wiring, High Air Flow84
Figure 19: Single and Dual Point Wiring Options86
Figure 20: Pump Wiring88
Figure 21: EEV Controller Elementary Diagram90
Figure 22: Compressor Wiring92
Figure 23: Power Options Connection Diagram94
Figure 24: Power Panel96
Figure 25: Micro Panel Connections99
Figure 26: Four Fan Units Dimensions - YLAA0041HE, YLAA0048HE, YLAA0058HE, YLAA0065HE100
Figure 27: Four Fan Units Dimensions - YLAA0070SE, YLAA0080SE, YLAA0089SE101
Figure 28: Four Fan Units Dimensions - YLAA0070ZJ102
Figure 29: Five Fan Units Dimensions - YLAA0100SE103
Figure 30: Five Fan Units Dimensions - YLAA0100ZJ104
Figure 31: Six Fan Units Dimensions - YLAA0092HE, YLAA0101HE, YLAA0115SE, YLAA0120SE105
Figure 32: Eight Fan Units Dimensions - YLAA0125HE, YLAA0136SE, YLAA0139HE, YLAA0142HE106
Figure 33: Eight Fan Units Dimensions - YLAA0155ZJ107
Figure 34: Ten Fan Units Dimensions - YLAA0170SE, YLAA0156HE, YLAA0175HE108
Figure 35: Twelve Fan Units Dimensions - YLAA200HE, YLAA0230HE109
Weight Distribution and Isolator Mounting Positions110
Figure 36: Sample Printout Supplied in the Isolator Package and in the Chiller Panel Literature Packet110
Clearances111
Figure 37: Unit Clearances - All Models111
Isolator Locations112
Isolator Information115
Section 6: Commissioning121
Preparation, with Power off121
Figure 38: EEV IB-G Interface Board123
Commissioning the Pump VFD124
Preparation, with Power on124
Figure 39: Drive Display126
Table 14: Drive Programming Parameters126
Figure 40: Circuit Breaker Panel127
Determining Proper Oil Levels128
Figure 41: Tandem Set128
Figure 42: Trio Set128
Section 7: Unit Controls133
Introduction133
IPU II and I/O Boards133
Transformer134
Display134
Keypad134
Unit Switch134
Battery Backup134
Programming the Number of Compressors134
Status Key135
Table 15: YLAA Fault and Inhibit Codes142
Table 16: Legend142
Figure 43: Status Key Messages Quick Reference List143
Display/Print Keys144
Figure 44: Operation Data147
Entry Keys152
Setpoints Keys153
Schedule/Advance Day Key154
Table 17: Cooling Setpoint, Programmable Limits, and Defaults155
Program Key156
Table 18: Program Key Limits and Default158
Figure 45: Setpoints Quick Reference List159
Table 19: Program Key Limits and Default160
Unit Keys162
Figure 46: Unit Keys Options Programming Quick Reference List169
Bacnet, Modbus, N2, and Yorktalk 2 Communications170
Figure 47: Micro Panel Connections171
Table 20: Minimum, Maximum and Default Values171
Table 21: Values Required for BAS Communication172
Table 22: Real Time Error Numbers173
Section 8: Unit Operation175
Capacity Control175
Suction Pressure Limit Controls176
Discharge Pressure Limit Controls176
Leaving Chilled Liquid Control176
Figure 48: Leaving Water Temperature Control Example176
Leaving Chilled Liquid Control Override to Reduce Cycling177
Figure 49: Setpoint Adjust177
Table 23: Sample Compressor Staging for Return Water Control177
Leaving Chilled Liquid System Lead/Lag and Compressor Sequencing178
Return Chilled Liquid System Lead/Lag and Compressor Sequencing178
Anti-Recycle Timer178
Anti-Coincidence Timer178
Evaporator Pump Control and YORK Hydro Kit Pump Control178
Evaporator Heater Control179
Pumpdown Control179
Standard Condenser Fan Control179
VSD Fan179
Changing the Switch Point of the Thermal Dispersion Flow Switch179
Figure 50: Condenser Fan Locations180
Table 24: YLAA Standard Condenser Fan Control Using Discharge Pressure Only (2, 3, or 4 Fans Per System)181
Table 25: YLAA Standard Condenser Fan Control Using Discharge Pressure Only (5 or 6 Fans Per System)182
Load Limiting183
Compressor Run Status183
Alarm Status183
Table 26: Compressor Operation Load Limiting183
Remote BAS/EMS Temperature Reset Using a Voltage or Current Signal184
Section 9: Service and Troubleshooting185
Clearing History Buffers185
Resetting System Lockout Faults185
Service Mode185
Service Mode, Outputs185
Service Mode, Chiller Configuration186
Service Mode, Analog and Digital Inputs186
Control Inputs/Outputs187
Table 27: I/O Digital Inputs187
Table 28: I/O Digital Outputs187
Table 29: I/O Analog Inputs187
Table 30: I/O Analog Outputs187
Figure 51: Microboard Layout188
Checking Inputs and Outputs189
Table 31: Outdoor Air Sensor Temperature/Voltage/Correlation189
Table 32: Entering/Leaving Chilled Liquid Temp. Sensor, Temperature/Voltage Correlation190
Table 33: Pressure Transducers191
Figure 52: I/O Board Relay Contact Architecture192
Table 34: Data Logging to Flash193
Optional Printer Installation195
Figure 53: Printer to Microboard Electrical Connections196
Troubleshooting197
Table 35: Troubleshooting197
Section 10: Maintenance199
Compressors199
Condenser Fan Motors199
Condenser Round Tube Coils199
Condenser MCHX199
Microchannel Coil Cleaning199
Operating Parameters202
On-Board Battery Backup202
Thermal Dispersion Flow Switch202
Brazed Plate Heat Exchanger (Evaporator) Heater202
Overall Unit Inspection202
Table 36: Cleaning Materials202
Table 37: Temperature Conversion Chart203
Table 38: R-410A Pressure Temperature Chart204
Table 39: R-454B Pressure Temperature Chart205
Temperature206
Table 40: SI-Metric Conversion206

York YLAA0041 Installation Operation & Maintenance

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Brand	York
Model	YLAA0041
Category	Chiller
Language	English