Crestron CHV-TSTAT and CHV-THSTAT Thermostats
Slot 4 – Current System State (continued)
SIGNAL I/O SIGNAL
TYPE
DEFINITION
Cool2Call Output Digital
Goes high when the system calls for stage 2 cool. Remains
high for as long as the cool system is running.
High/1 = Stage 2 cool running; Low/0 = System not running
FanCall Output Digital
Goes high when the fan is running for any reason. Remains
high for as long as the fan is running.
High/1 = Fan running; Low/0 = System not running
HumidifierCall Output Digital
Goes high when the system calls for humidification. Remains
high for as long as the humidifier is running.
High/1 = Humidifier running; Low/0 = System not running
SlabHeatCall Output Digital
Goes high when the system calls for slab heat. Remains high
for as long as the slab system is running.
High/1 = Slab heat running; Low/0 = System not running
Slot 5 Detail View – Display Functions
Operations and Installation Guide – DOC. 8163C Thermostats: CHV-TSTAT and CHV-THSTAT • 71
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