Compressor Staging .................................................................................................................................... 66
Heat Pump - CVZT & VVZT ..................................................................................................................... 66
Dual compressor cooling staging (manifold or independent) .......................................................... 66
Space Temperature Recovery ................................................................................................................ 67
Supply Fan Control ................................................................................................................................. 67
Supply Fan Control ................................................................................................................................. 69
VVZT DAT Control Mode ............................................................................................................................ 71
Supply Fan Speed Control .......................................................................................................................... 72
Supply Fan Status Points ........................................................................................................................ 72
Single-Speed ....................................................................................................................................... 72
VFD-driven .......................................................................................................................................... 72
Supply Fan Percentages ............................................................................................................................. 73
Airflow Adjustments .................................................................................................................................. 74
Constant Volume Units .......................................................................................................................... 74
Symbio TR-150 VFD Parameters ................................................................................................................ 75
VFD Parameter Info ................................................................................................................................ 77
VFD Harness Part Numbers .................................................................................................................... 77
8