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controller set point. The fan runs with the speed set by the speed controller if the temperature drops 2 °C
below the set point or if the initial temperature is below the set point.
(TT PRO
U1) is used for exact air temperature control (the fan changes its speed
Timer-based operating logic
more frequent as compared to temperature-based logic, but one speed interval continues at least 5 minutes).
The fan switches to maximum speed as the temperature reaches the temperature controller set point. If the
temperature drops below the set point, the fan switches to the speed set by the speed controller 5 min. after
the timer countdown. If the initial temperature is below the set point, the fan starts operating at set speed
immediately.
TT PRO P
The
fan (Fig. 33) is equipped with a speed controller that enables switching the fan on/off and
smooth speed (air flow) regulation from minimum to maximum value.
11
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