Creating A New Pot Curve - Prince Antec Controls Retrofit Manual

Creating a New POT Curve

If the original curve is not available, then it may be necessary to create a new POT curve to use for the valve control.
31 | VVR– Manual | AntecControls.com
STEP 1
Begin with the actuator in the minimum position (2 VDC).
Adjust the crank arm and position nuts so that the valve is capable of achieving the
minimum rated airflow.
NOTE: Use an airflow measurement tool (such as a Flo-Hood) to verify that the
minimum valve airflow is achieved.
STEP 2
Drive the actuator to the maximum position (10 VDC).
Ensure the actuator has reached the maximum position and the valve is capable of
achieving the maximum rated airflow.
NOTE: Use an airflow measurement tool (such as a Flo-Hood) to verify that the
maximum valve airflow is achieved.
STEP 3
Based on the initial settings used for STEP 1 and the maximum achieved in STEP 2.
• If the valve is not capable of meeting the maximum airflow, return the valve back to
minimum position. Increase the crank arm's range and adjust the position nuts until
minimum flow is achieved again.
• If the valve's actuator has not reached the maximum position, return the valve back
to minimum position. Decrease the crank arm's range and adjust the position nuts
until minimum flow is achieved again.
See STEP 6 of the Calibrating the VVR when using PACE
Repeat this step until the minimum and maximum position of the valve are
NOTE:
capable of achieving the minimum and maximum operating range of the valve.
STEP 4
After the minimum and maximum position have been achieved, use an actuator
override to fill in the following table. This will become the new POT curve for the valve.
After all values have been recorded, please refer back to the previous sections in the
POT Curves section to configure the newly created POT curve.
Actuator POT Voltage (VDC from GREEN
Voltage to BLACK on POT intput)
2.00
3.60
4.90
6.20
7.30
8.30
9.20
10.00
This can be a lengthy process, as it requires taking eight manual readings for
NOTE:
POT voltage and airflow.
VVR - MANUAL
section for more detail.
Airflow (measured by TAB)