Ford 1997 Crown Victoria Manual page 74

If the inside of the vehicle is very warm, drive
for the first few minutes with the windows open
to force the hot, stale air out of the vehicle.
Fan speed can be reduced, after a comfortable
temperature has been reached, to provide quieter
system operation.
To cool your vehicle using outside air, move the
SELECT knob to NORM A/C, move the TEMP
knob to the end of the blue range (full
counterclockwise) and set the fan to the desired
speed. Cooling your vehicle in this way provides
quieter operation, but it is not as economical as
MAX A/C.
The instrument panel registers may be adjusted
to control the quantity and direction of air being
discharged. The thumbwheel controls the volume
of air and the knob in the center of the register
directs the air up and down or side to side.
When the SELECT knob is moved to OFF, the
system is off and the fan will not operate.
Adjusting the panel register airflow
The instrument panel registers may be adjusted
to your comfort needs. The thumbwheel controls
the volume of air and the control in the center
of the register controls direction up or down or
side to side.
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