Primo
8
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ELECTRONICS OPERATION ALGORITHM
The
EC
motor is controlled by sending of an external control signal from 0 to 10 V to the X2 terminal block or by the R1 internal speed
controller. Control method selection is carried out by means of the SW DIP switch:
• DIP switch in IN position. The control signal is set by the R1 internal speed controller that enables switching the fan on/off and
smooth speed (air flow) regulation from minimum to maximum value. Rotations are controlled from the minimum (extreme right
position) to the maximum (extreme left position). When rotating counter-clockwise, the rotations increase.
• DIP switch in EXT position. The control signal is set by the S1 external control unit.
The Primo ... T
fan activates upon control voltage application to input terminal LT by an external switch (e.g. indoor light switch).
After the control voltage is off, the fan continues to operate within the set time period adjustable from 2 to 30 min by the timer.
To adjust the fan turn-on delay time, turn the control knob T counter-clockwise to decrease and clockwise to increase the turn-on delay
time respectively.
The Primo ... G1
fan is equipped with an electronic module TSC (speed controller with an electronic thermostat) for automatic speed
control (air flow) depending on the air temperature. The fan switches to the maximum speed as the room air temperature exceeds the
set point. As the air temperature drops 2 °C below the set point or if the initial temperature is below the set point, the fan operates with
the set speed.
The Primo ... FR1
fan (Fig. 23) is equipped with a speed controller that enables switching the fan on/off and smooth speed (air flow)
regulation from minimum to maximum value.
