Installation Guide

Controlling Airflow with an AFMS
About
After Setting Up an AFMS on page 3, you can control outside air flow, or control mixed air temperature. Also, for
setup or maintenance purposes, you can command a damper position.
Alternatively, you can pass through control of the damper actuator to an external controller, using the AFMSfor
measurement and monitoring only. (See Monitoring with an AFMS on page 12.)
Controlling Outside Air Flow
1.
Go to AFMS, then select the Device Name of the AFMScontroller.
2.
Select the Configure tab.
3.
From the Control Mode dropdown menu, select OA FLOWCTRL.
4.
Enter an Outside Air Flow Setpoint (as CFM).
5.
Select Save.
Note: The outside air damper will modulate to maintain the Outside Air Flow Setpoint. If Enable Low
Limit is ON and the mixed air temperature reaches the Low Temp Limit, the damper will modulate toward
closed to prevent freezing of the equipment. If an occupancy sensor is used, this Control Mode will only be
active when the served space is occupied.
Controlling Mixed Air Temperature
1.
Go to AFMS, then select the Device Name of the AFMScontroller.
2.
From the tabs that appear, select Configure.
3.
From the Control Mode dropdown menu, select MATCTRL.
4.
Enter a Mixed Air Temp Setpoint.
5.
Select Save.
Note: The outside air damper will modulate to maintain the Mixed Air Temp Setpoint. If Enable Low Limit
is ON and the mixed air temperature reaches the Low Temp Limit, the damper will modulate toward
closed to prevent freezing of the equipment. If an occupancy sensor is used, this Control Mode will only be
active when the served space is occupied.
Commanding a Damper Position
1.
Go to AFMS, then select the Device Name of the AFMScontroller.
2.
From the tabs that appear, select Configure.
KMC AFMS Commander Application Guide 10 AG230215A