FORD 2013 E-450 v.3 - Manual (Page 97)

Maximum Cooling Performance in Instrument Panel or Instrument
Panel and Floor Positions
1 Adjust the temperature control to the lowest setting.
2 Adjust the fan speed to the highest setting initially and then
adjust it to suit the desired comfort level.
96 Climate Control
2013 Econoline (eco)
Owners Guide gf, 3rd Printing, May 2013
USA (fus)