12 ECB-VAVS Preloaded Applications
Heating Mode for Fan Powered VAV
When the air is suitable for heating the space, ActFlowSP varies between MinFlowHeatSP and
MaxFlowHeatSP. Otherwise, when the air is too cold, ActFlowSP is by default equal to Min-
FlowHeatSP.
When OccupancyStatus is in unoccupied or standby mode, MinFlowSP and MinFlowHeatSP are re-
placed by either MinFlowUnoccSP or MinFlowStbySP.
When the VVTMode (BV12) option is selected, ActFlowSP is converted into a percentage, which con-
trols the damper without using a flow reading.
For instructions on how to configure a controller’s airflow setpoint parameters using the dc
gfx
Applica-
tions interface, see Configuring the Calibration Points.
For screen-by-screen steps on how to configure the airflow setpoint parameters using an Allure EC-
Smart-Vue sensor, see Configuring the Flow Setpoint Parameters.
Airflow Calibration
The actual flow, ActFlow (AV1), is calculated using the differential pressure from the onboard sensor
and the K-factor.
To calibrate the system, stabilize the flow by either overriding the flow setpoint or the damper position,
DamperOvr (AV9). Once stabilized, read the flow hood measurement and enter the value into Flow-
Calib (AV33). The K-factor will automatically adjust to the proper value.
For instructions on how to perform VAV airflow balancing, see Air Flow Tab (VAV Balancing).
For screen-by-screen steps on how to perform VAV airflow balancing using an Allure EC-Smart-Vue
sensor, see Performing VAV Airflow Balancing.
Sequence of Operation
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