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Flow Range Diagram
Always start in the Flow Away position.
Adjust speed till room pressure is reached. Fan must be running at least at half speed and flow pressure must be
greater than room pressure. If not, insert the Range A plate and keep changing to lower ranges till motor is at
least half speed and flow pressure must be greater than room pressure.
Range 22 - Flow Away
Range B - Flow Away
Range C4 - Flow Away
2000 Fire Door-Fan Manual
Range A - Flow Away
Range C8 - Flow Away
Range C2 - Flow Away
updated 2002-05-28
Page 22 of 58
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