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Single Minimum Speed
The single minimum speed can be adjusted only if the minimum
speed curve is deactivated or if the minimum speed curve is
activated but not effectively operating. If it is effectively operat-
ing, deactivate the curve as follows.
To Deactivate the Minimum Speed Curve
Set selection knob to MIN. SPEED. The current stage 1 single
minimum speed appears flashing on the display.
Press push-button repeatedly until the word ON appears
flashing on the display.
Turn adjustment knob counterclockwise one notch. The word
OFF appears flashing on the display, indicating that the mini-
mum speed curve is now deactivated.
To Adjust the Single Minimum Speed
Set selection knob to MIN.SPEED. The current stage 1
single minimum speed appears flashing on the display.
Turn adjustment knob to adjust the minimum speed to the
desired value.
The minimum speed can be adjusted between 10 and 100% of the
full speed of the fans.
2 - With a minimum speed curve
When a minimum speed curve is specified and activated, the controller au-
tomatically adjusts the minimum speed over a given period of time. The
minimum speed curve is comprised of six points. A day number as well as
a minimum speed for this day number must be specified for each of the six
points. When the minimum speed curve is activated, the controller adjusts
the minimum speed every hour in a linear fashion between two consecu-
tive points.
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TC4-2N6F.rev.07
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