Johnson Controls Quantech Millennium QCC3080CZE Installation Operation & Maintenance page 6

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
6
Table of contents (cont'd)
FORM QCC3-NM1
ISSUE DATE: 12/19/2023
Quantech