Johnson Controls YORK YLUA0078Z Series Installation Operation & Maintenance page 8

FORM 150.73-NM1
ISSUE DATE: 07/03/2024
List of figures
FIGURE 1 - Compressors .......................................................................................................................................15
FIGURE 2 - Unit Components Front .......................................................................................................................20
FIGURE 3 - Power Panel Components ..................................................................................................................21
FIGURE 4 - Power Panel / Control Components ....................................................................................................22
FIGURE 5 - Refrigerant Flow Diagram ...................................................................................................................27
FIGURE 6 - Process and Instrumentation Diagram ................................................................................................28
FIGURE 7 - Unit Rigging ........................................................................................................................................29
FIGURE 8 - Single-Point Supply Connection – Terminal Block, Non-Fused Disconnect Switch
Or Circuit Breaker ...............................................................................................................................40
FIGURE 9 - Discharge Air Sensor Field Wiring ......................................................................................................40
FIGURE 10 - Control Wiring ...................................................................................................................................41
FIGURE 11 - Elementary Wiring Diagram ..............................................................................................................68
FIGURE 12 - Power Options Connection Diagram .................................................................................................78
FIGURE 13 - Single Point and Dual Point Wiring ...................................................................................................82
FIGURE 14 - Wiring ................................................................................................................................................84
FIGURE 15 - Micro Panel Connections ..................................................................................................................86
FIGURE 16 - Elementary Diagram .........................................................................................................................88
FIGURE 17 - Unit Clearances – All Models ............................................................................................................95
FIGURE 18 - Sample Printout Supplied in the Isolator Package and in the Chiller Panel Literature Packet. ........ 96
FIGURE 19 - Status Key Messages Quick Reference List ................................................................................... 116
FIGURE 20 - Operation Data ................................................................................................................................120
FIGURE 21 - Setpoints Quick Reference List .......................................................................................................132
FIGURE 22 - Unit Keys Programming Quick Reference List ................................................................................138
FIGURE 23 - Discharge Air Temperature Control .................................................................................................140
FIGURE 24 - Suction Pressure Control ................................................................................................................141
FIGURE 25 - YLUA0078 – YLUA0095 Fan Location (Typical) .............................................................................143
FIGURE 26 - YLUA0098 – YLUA0130 Fan Location ...........................................................................................145
FIGURE 27 - YLUA0148 – YLUA0158 Fan Location ...........................................................................................146
FIGURE 28 - Microboard Layout ..........................................................................................................................152
FIGURE 29 - I/O Board Relay Contact Architecture .............................................................................................156
FIGURE 30 - Printer to Microboard Electrical Connections ..................................................................................157
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JOHNSON CONTROLS