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Table 3: Fresh Air Damper Sizing Air Flow (CFM) Table
P/N 780100700 07/18 Rev F
Determine Determine
Static (Heat Mode) Static (Cool Mode) Equiv. Ft.
Heat CFM Cool CFM
Control Setup
Set CFM Continuous Dial
Carefully adjust the CFM continuous dial. Use the recorded volume that was determined from table
2A or 2B and recorded in
Section 2A.
Note: Locate arrow on the dial stem. Align to the desired continuous volume.
Set CFM Cool Vent Dial
Carefully adjust the CFM Cool Vent dial. Use the recorded volume that was determined from using
one of the previous methods and Recorded in
Section 2B.
Note: Locate arrow on the dial stem. Align to the desired volume.
Set CFM Heat Vent Dial
Carefully adjust CFM Heat Vent dial to volume determined from using one of the predetermined
methods and recorded in
Section 2B.
Note: Locate arrow on the dial stem. Align to the desired volume.
If Static and Duct Design are Known Use Table 3
1.
Enter Intake Design Static Pressure
2.
Enter Intake Duct Equivalent Feet
3.
Type of Intake Duct - Smooth or Flex
4.
Enter Diameter of Intake Pipe
5.
Determine CFM from Table 3
