Mercedes-Benz 2000 C-Class - Manual (Page 12)

Basic Setting - Heater
Select temperature for each side of the passenger compartment.
Select air volume with control switch, set at least to position 2 to
prevent windows from fogging up. Set air distribution control switch to
position shown above.
Turn side air outlets (4) to the detent position.
Open center air outlets as desired.
Basic Setting - Air Conditioner
Select temperature for each side of the passenger compartment.
Select air volume with control switch, at least to position 1 to start
the air conditioner. Set air distribution control switch to position
Open center air outlets .
Open left and right side air outlets .
Special Settings (use only for short duration)
Defrosting
Set temperature selectors and switches for air volume and air distribution to position
.
Close center air outlets.
Turn wheels (2) to position to open left and right side air outlets (4).
Adjust side air outlets upward.