FORD 2010 F-550 v.1 - Manual (Page 99)

3. Set the fan speed to the highest setting.
4. Direct the outer instrument panel vents towards the side windows.
To increase airflow to the outer instrument panel vents, close the vents
located in the middle of the instrument panel.
MANUAL HEATING AND AIR CONDITIONING SYSTEMS
(IF EQUIPPED)
• Manual heating and air
conditioning system
• Manual heating and air
conditioning system with heated
mirrors
• Manual heating and air
conditioning system with heated
mirrors and heated seats
1. Fan speed adjustment: Controls the volume of air circulated in the
vehicle.
Climate Controls
99
2010 F-250/350/450/550 (f23)
Owners Guide, 1st Printing
USA (fus)