1998 Buick Riviera Owner's Manual - Page 147

The ventilation system always allows fresh air to flow Manual Operation through the interior when the vehicle moving even is You may also manually adjust thear delivery or fan i speed. with the system in the mode. OFF AIR FLOW This button is used to change the direction of the airflow. The airflow choices available are FLOOR, VENT The VENT button allows outside air to flow through your vehicle without the air conditioning FLOOR-MID, MID and WINDSHIELD-FLOOR. compressor working. Selecting VENT and the AUTO If the system is set for AUTO, pressingAIR FLOW the button atthe same time allows the system to control button will display the current airflow direction and the automatically without the use the air conditioning of comfort setting. Press the FLOW up or down AIR compressor or the use of the RECIRC mode. turn To button again to change direction of the airflow. the off the VENT selection, push the VENT button again. If the AIR FLOW up button is selected while the in RECIRC: When RECIRCis selected, the system will FRONT defrost mode, the system will direct the air limit the amount outside air entering your vehicle. of toward the WINDSHIELD. the AIR FLOW down If This is helpful when you are trying to cool the interior button is selected while in the FRONT defrost mode, the of the vehicle quickly or limit the amount of outside air system will direct the air toward the FLOOR, and the entering your vehicle some other reason. RECIRC for FRONT defrost mode will cancel. Notice the arrows in and AUTO may be selected at the same time. The the display. system will remain in RECIRC untilignition is the OFF: If the passenger's comfort control turned on,it is turned off, then the system will return back to the can be turned by pressing the OFF button once. off previously selected mode. RECIRC can be selected in Pressing the OFF button a second time will turn the off all manual airflow modes except FRONT defrost. main system. Turning off main system causes the fan RECIRC cannot be selected with the VENT button. the to turn off and the airflow to be directed the FLOOR. to Operating RECIRC in cold temperature under high or try of The system will still to keep the interior the humidity conditions may cause moisture to form the on vehicle at the previously chosen comfort setting. The outside temperature will show on the display when the inside of the windshield.If this condition occurs, deselect the RECIRC button. system is set to OFF. 3-4