Dynamic/recirculation air

Dynamic/recirculation air

The special actuator turns the air inlet port (P) between two extreme positions.

• The position illustrated shuts inside air inlet, thus the fan withdraws only outside air.

• If the port is turned as illustrated, the outside air is inhibited and recirculation air is withdrawn.

Hot/cold air mixing

The special actuator turns the port (M) between the extreme (LO) and (HI) positions.

In the (LO) position the flow of air withdrawn by the fan is distributed to the different vents without undergoing any change in temperature as it is unable to flow against the finned surface of the heater radiator (R).

When the mixing port is at the limit position (HI) the entire flow of air withdrawn by the fan is compelled to flow against the fins of the heater radiator, therefore warm air at the highest temperature possible will be distributed to the different vents.

When the mixing port is at an intermediate position between the above-mentioned two, only part of the flow of air withdrawn by the fan touches the radiator fins.