Adjusting The Ventilation - IVT 495 TWIN Manual To Installation, Commissioning And Maintenance

Fan capacity
Available pressure for the ducting system: see the
diagram.
To change the fan speed, move the fan transformer
cable according to the marking on the transformer.
115V = Speed 1 (not on 495 TWIN)
125V = Speed 2 (not on 495 TWIN)
135V = Speed 3
150V = Speed 4
180V = Speed 5
230V = Speed 6
The IVT 495 TWIN requires at least fan speed 3.

Adjusting the ventilation

Ventilation diagram
Air flow m³/h
39
125 135 150 180
230 0 115
Move this cable (black)
IVT 495 TWIN 9518799
INSTALLER