Buick 1994 Roadmaster Owner's Manual page 130

Your Buick Comfort Control System
This part tells you how to make your air system work
for you.
Fresh air from outside your vehicle flows through your
Buick when the car is moving. When the vehicle is not
moving, you can get outside air to flow through by
selecting any air choice (except the rear window
defogger) and. the HI fan speed,.
The automatic system will recirculate the air inside the
vehicle for maximum air conditioning performance if
the inside of the vehicle is hot. The automatic system
will return to circulating outside air once the vehicle
interior has cooled down.
The manual system will recirculate the air for maximum
air conditioning performance when RECIRC is selected.
Air Outlets
128
, .