JOHNSON CONTROLS
6
FORM 150.73-NM1
ISSUE DATE: 07/03/2024
Section 5: Technical data ......................................................................................................................................43
Operational limitations .................................................................................................................................... 43
Physical data ..................................................................................................................................................44
Electrical data ................................................................................................................................................. 45
Wiring Diagrams ............................................................................................................................................. 68
Power options connection diagram ................................................................................................................78
Wiring .............................................................................................................................................................84
Micro panel connections .................................................................................................................................86
Dimensions .....................................................................................................................................................92
Clearances .....................................................................................................................................................95
Weight distribution and isolator mounting positions .......................................................................................96
Isolator information ......................................................................................................................................... 97
Section 6: Commissioning .................................................................................................................................103
Commissioning ............................................................................................................................................. 103
Preparation: power off ..................................................................................................................................103
Preparation: power on ..................................................................................................................................104
Section 7: Unit controls ......................................................................................................................................109
Introduction ...................................................................................................................................................109
Microprocessor board ...................................................................................................................................109
Unit switch .................................................................................................................................................... 110
Display .......................................................................................................................................................... 110
Keypad ......................................................................................................................................................... 110
Battery back-up ............................................................................................................................................ 110
Transformer ................................................................................................................................................. 110
Single system select and programming number of compressors ................................................................. 110
Status key ..................................................................................................................................................... 111
Display/print keys ......................................................................................................................................... 117
Entry keys .....................................................................................................................................................125
Setpoints keys ..............................................................................................................................................126
Unit keys ......................................................................................................................................................133
Section 8: Unit operation ....................................................................................................................................139
Capacity control ............................................................................................................................................139
Suction pressure limit controls .....................................................................................................................139
Discharge pressure limit controls .................................................................................................................139
Discharge air temperature control ................................................................................................................139
Suction Pressure control ..............................................................................................................................141
System lead/lag ............................................................................................................................................ 142
Compressor lead/lag ....................................................................................................................................142
Anti-recycle timer ..........................................................................................................................................142
Anti-coincidence timer ..................................................................................................................................142
Evaporator blower control ............................................................................................................................142
Pumpdown control ........................................................................................................................................142
Condenser fan control ..................................................................................................................................145
Load limiting .................................................................................................................................................147
Compressor run status .................................................................................................................................147
Alarm status .................................................................................................................................................147
BAS/EMS discharge air temperature reset using a voltage or current signal .............................................148
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