York YLUA0248 Series Installation Operation & Maintenance page 8

FORM 150.73-NM2
ISSUE DATE: 09/07/2020
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 ...................................................................................................................28
FIGURE 6 - Process And Instrumentation Diagram ...............................................................................................29
FIGURE 7 - Unit Rigging ........................................................................................................................................31
FIGURE 8 - Single-Point Supply Connection - Terminal Block, Non-Fused Disconnect Switch
Or Circuit Breaker ...............................................................................................................................42
FIGURE 9 - Discharge Air Sensor Field Wiring ......................................................................................................42
FIGURE 10 - Control Wiring ...................................................................................................................................43
FIGURE 11 - Elementary Wiring Diagram ..............................................................................................................54
FIGURE 12 - Elementary Wiring Diagram ..............................................................................................................56
FIGURE 13 - Elementary Wiring Diagram ..............................................................................................................58
FIGURE 14 - Elementary Wiring Diagram ..............................................................................................................60
FIGURE 15 - Elementary Wiring Diagram ..............................................................................................................62
FIGURE 16 - Power Options Connection Diagram .................................................................................................64
FIGURE 17 - Power Panel ......................................................................................................................................66
FIGURE 18 - Single Point & Dual Point Wiring .......................................................................................................68
FIGURE 19 - Wiring ................................................................................................................................................70
FIGURE 20 - Micro Panel Connections ..................................................................................................................72
FIGURE 21 - Elementary Diagram .........................................................................................................................74
FIGURE 22 - Elementary Diagram .........................................................................................................................76
FIGURE 23 - Unit Clearances - All Models ............................................................................................................81
FIGURE 24 - Setpoints Quick Reference List ....................................................................................................... 117
FIGURE 25 - Unit Keys Programming Quick Reference List ................................................................................123
FIGURE 26 - Discharge Air Temperature Control .................................................................................................126
FIGURE 27 - Suction Pressure Control ................................................................................................................127
FIGURE 28 - YLUA0248 - YLUA0298 Fan Location (Typical) ............................................................................129
FIGURE 29 - YLUA0308 - YLUA0408 Fan Location ..........................................................................................131
FIGURE 30 - YLUA0468 - YLUA0498 Fan Location ...........................................................................................132
FIGURE 31 - Microboard Layout ..........................................................................................................................138
FIGURE 32 - I/O Board Relay Contact Architecture ............................................................................................142
FIGURE 33 - Printer to Microboard Electrical Connections ..................................................................................143
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JOHNSON CONTROLS