Unit installation

SCXF-SVX01K-EN 5
Human Interface Module - Standard on all
Units ............................. 66
Remote Human Interface Module Option 66
Waterside Module - Standard on all water-
cooled units ....................... 66
Heat Module ....................... 66
Ventilation Override Module (VOM) Option
66
LonTalk
®
Communications Interface (LCI-I)
Module ........................... 67
BACnet
®
Communications Interface
(BCI-I) Module ...................... 68
Exhaust/Comparative Enthalpy (ECEM) Mod-
ule ............................... 68
Ventilation Control Module (VCM) ..... 68
Generic Building Automation System Mod-
ule Option ......................... 69
Input Devices and System Functions .... 70
Pre-Start ............................... 73
Pre-Start Checklist .................... 73
Start-Up ............................... 75
Final Refrigerant Charge ............... 76
Start-up Procedure .................... 76
Startup Log .......................... 77
Maintenance ........................... 79
Service Access ....................... 79
Variable Frequency Drive (VFD) ....... 79
Air Filters ............................ 79
Inspecting and Cleaning the Drain Pan .. 80
Inspecting and Cleaning the Fan ........ 81
Supply Fan .......................... 81
Fan Drive .......................... 81
Fan Bearings ....................... 82
Fan Belt Tension .................... 82
Adjusting Belt Tension ............... 83
Compressors ......................... 84
Scroll Compressor Failure Diagnosis and Re-
placement ......................... 84
40 Ton Air-Cooled Compressor Suction Re-
strictor Replacement ................ 84
Refrigerant System ................... 84
Refrigerant Leak Test Procedure ....... 84
Brazing Procedures ..................85
System Evacuation Procedures ........86
Components ..........................88
Coil Fin Cleaning ......................89
Piping Components ....................91
Maintenance Periodic Checklists .........91
Diagnostics .............................93
Troubleshooting .......................93
System Checks ......................93
Diagnostics ...........................93
Wiring Diagrams .......................102