eZV-440 Application Guide
Edition 2.6
Page 69 of 84
Space
Demand
Box Mode Airflow Setpoint
Cooling
demand
AutoCool
(Cool air in
the duct) or
CoolCmd in
manual mode
The damper is the first stage of cooling. As the Airflow Demand
increases from 0 to 100%, the airflow setpoint increases from
the CoolingMinimum to the CoolingMaximum setpoint.
Airflow setpoint = AirflowDemand x (CoolingMaximum –
CoolingMinimum) + CoolingMinimum
If there is no space heating or cooling demands, the airflow setpoint is the value of the
StandbyMinimum field on the Setpoints tab (AV129) in Standby occupancy mode; in Unoccupied
occupancy mode, the airflow setpoint remains at zero.
Air Balancing
The airflow setpoint also changes during air balancing.
When you select an option on the Balancing Mode field, the airflow setpoint is set to the following
values:
Balancing Mode option Air Flow Setpoint set to:
ClgMinFlow CoolingMinimum
ClgMaxFlow CoolingMaximum
HtgMinFlow HeatingMinimum
HtgMaxFlow HeatingMaximum
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