Installation & Operation Manual - Model AVC5000
Contents of this Manual are Subject to Change Without Notification
Page 35
6.6.4.2.4 Configure Purge Mode
The Purge Function can be configured to operate differently based on the application
requirements.
6.6.4.2.4.1
Purge Configured for “Valve Position”
For applications that require the “Purge” function to drive the valve to a specific position,
configure Purge Mode as follows:
When Purge is activated, either by the AFC5000 Purge Button or via BACnet, the controller will
respond by overriding the control loop and driving the value to the programmed position.
6.6.4.2
.4.2 Purge Configured for “Max Volume Limit Control Setpoint
(DI Select)
”
For applications that require the “Purge” function to control and maintain the
maximum
volume limit, configure Purge Mode as follows:
When Purge is activated, either by the AFC5000 Purge Button or via BACnet, the controller will
respond by controlling to the Maximum Airflow Volume Limit.
Select
When configured per above, t
he “Control Output” Gauge on the
Dashboard will
appear as shown to the right to indicate the control loop is being overridden.
Select
Enter the Valve Position required when Purge is activated
Save Changes
Select
Save Changes
For the “Control Setpoint Configuration” shown
on the right, activating Purge when lab is
Occupied (DI-2 Open), will result in the
controller maintaining 850 CFM. Activating
Purge when lab is Unoccupied (DI-2 Closed) will
result in the controller maintaining 700 CFM.
