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Appendix A: VVT Zone Controller Points/Properties
Point Name/Description
Sensor Array:
Sensor calculation method - When using multiple SPT sensors, select the process
variable to be passed to the controller.
BACnet configuration:
Network Visible - Must be enabled for other BACnet objects to read or write to this
point, and for this point to generate alarms.
Object Name - Do not
CO2 Sensor – The current voltage of the controller's RH/CO2 input.
– The current voltage of the controller's RH/CO2 input.
RH Sensor
Zone Temp – The value of the controller's T55 space temperature sensor input.
SAT Sensor – The current value of the controller's SAT input.
Occupancy Contact State - The hardware state of the contact used for Remote Occupancy
Override.
Sensor Invalid – This internal input monitors the communication between the controller
and the SPT sensor. Off indicates communication is normal.
Hot Water Valve - The current value of the controller's HWV/ACT output.
Heating Stage 1 - The current hardware state of the controller's HEAT1 output.
Heating Stage 2 - The current hardware state of the controller's HEAT2 output.
Fan S/S or EH 3 - The current hardware state of the controller's FAN/HEAT3 output. The
function of this output depends on the terminal type.
68
change.
Default/Range
D:
Avg
R:
Avg, Min, Max
D:
Enabled
D:
zone_temp
R:
0 to 5 Vdc
R:
0 to 5 Vdc
R:
-56 to 245°F
R:
-56 to 140°F
R:
Open/Closed
R:
Off/On
R:
0 to 100%
R:
Off/On
R:
Off/On
R:
Off/On
VVT Zone Controller
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