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Range Nut
Range Slot
34 | VVR– Manual | AntecControls.com
Swivel
Position Nuts
STEP 7
Override the valve from full closed (2 VDC to actuator) to full open (10 VDC to actuator) to
see if it matches the full operating range of the valve.
NOTE:
This should reach the full operating range, not just the scheduled maximum airflow.
If it matches the range, you have successfully completed the calibration.
If it does not match the range continue to STEP 8.
STEP 8
If the maximum airflow reading in Step 7 was higher than the operating range move the
range nut further up on the range slotted crank arm.
If the maximum airflow reading Step 7 was lower than the operating range move the range
nut lower down on the range slotted crank arm.
NOTE:
Ajusting the range nut has a smaller effect on the lower end of the valve range and
much larger effect on the higher end of the valve range.
STEP 9
Follow Steps 6-8 until the valve operating range matches when the valve is at its minimum
and its maximum positions in the balancing menu.
VVR - MANUAL
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