Appendix A: VAV Zone Controller Points/Properties
Point Name/Description
Default/Range
Primary Airflow Setpoint
– The desired airflow setpoint calculated by the controller to
meet the required temperature, IAQ, or dehumidification requirements.
R: 0 to 99999 cfm
(liters/second)
Relative Humidity Source –
The source of the relative humidity value.
R: N/A
Local
Network
Linkage
Locked Value
IAQ Source –
The source of the indoor air quality value.
R: N/A
Local
Network
Linkage
Locked Value
Outdoor Air Temperature Source
– The source of the outdoor air temperature.
R: N/A
Local
Network
Linkage
Locked Value
Cooling Demand Level
– The system cool demand level received over the network.
R: 0 to 3
Heating Demand Level
– The system heat demand level received over the network.
R: 0 to 3
Heat Delay –
The status of the terminal heat delay.
R: Inactive/Active
Remaining Heat Delay –
If
Heat Delay
is
Active
, this is the remaining delay time.
R: 0 to 60 minutes
Calculated DCV Capacity –
If
DCV Control
is set to
Enable
, this is the calculated minimum
airflow, expressed as a percentage, that will be maintained to satisfy the ventilation
requirement.
R: 0 to 100%
Calculated Dehumidify Capacity –
If
RH Control
is set to
Enable
, this is the calculated
minimum airflow, expressed as a percentage, that will be maintained to satisfy the
dehumidification requirement.
R: 0 to 100%
Reset Filter Alarm
– Set this to
On
to reset an active
Filter Alarm
and restart the
Filter
Service Alarm Timer
. After the alarm returns to normal, this automatically changes to
Off
.
D:
R:
Off
Off/On
Occupancy Contact State
- The physical state of the
Remote
input.
R: Open/Closed
Occupancy
BAS On/Off
– Determines the occupancy state of the controller and can be set over the
network by another device or third party BAS.
Options:
•
Inactive
– Occupancy is determined by a configured schedule.
•
Occupied
– The controller is always in the occupied mode.
•
Unoccupied
– The controller is always in the unoccupied mode.
NOTE
If
BAS On/Off
is set to either
Unoccupied
or
Occupied
, the
Optimal Start
routine is
automatically disabled.
D:
R:
Inactive
Inactive
Occupied
Unoccupied
Schedules
– The controller's occupancy status based on the local schedule.
R: Unoccupied/Occupied
Pushbutton Override
–
Active
indicates if a user pushed the sensor's override button to
override the occupancy state.
R: Off/Active
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VAV Zone Controllers
