S&P UVF ECOWATT Series Manual page 29

7.9. CONNECTING THE PRESSURE SWITCHES
7.9.1. Filters clogging supervision
The unit is equipped with 2 pressure taps on each side of the fi lters which allow the connec-
tion of the pressure switch delivered with the unit.
Connect the pneumatic tubes, respecting the indications "+" and "-" in the pressure switch
and in the pressure taps.
Section 9.3. includes a table with the recommended pressure drop values for each fi lter
class.
8. ADJUSTING OF THE FAN SPEED
8.1. MANUAL SPEED ADJUSTMENT
All models of the UVF-ECOWATT range have a built-in potentiometer inside the electrical terminals
box that allows the manual adjustment of the fan speed.
It is not necessary to open the fan access register during the unit electric connection.
Depending on the position of the jumpers built-in into the electric terminals box, it is possible to
select the type of regulating element between the manual potentiometer integrated in the PCB, or
an external control signal 0-10V type.
EN
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