Johnson Controls YORK YLUA0078Z Series Installation Operation & Maintenance page 5

FORM 150.73-NM1
ISSUE DATE: 07/03/2024
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
Refrigerant circuit ........................................................................................................................................... 16
Microcomputer control center ......................................................................................................................... 16
High ambient kit .............................................................................................................................................. 17
Communications ............................................................................................................................................. 17
Power panel ................................................................................................................................................... 17
Accessories and options ................................................................................................................................ 17
Unit components ........................................................................................................................................... 20
Nomenclature (Pin) ........................................................................................................................................ 23
Refrigerant flow diagram ................................................................................................................................ 27
Process and instrumentation diagram ............................................................................................................ 28
Section 3: Handling and storage ..........................................................................................................................29
Delivery and storage ...................................................................................................................................... 29
Inspection ....................................................................................................................................................... 29
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
Oil traps .......................................................................................................................................................... 38
Refrigerant charge .......................................................................................................................................... 38
Filter driers, sight glasses, and TXV'S............................................................................................................ 38
Refrigerant piping notes ................................................................................................................................. 39
Control wiring ................................................................................................................................................. 41
JOHNSON CONTROLS
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