1998 Buick Riviera Owner's Manual - Page 148

FRONT This selection is used to defrost the windshield by directing the airflow toward the windshield. If FRONT is selected whilein the AUTO mode, the fan speed andthe air temperaturefrom the front defroster will vary.If a manualfan speed setting is selected, the fan speed will remain at that selection until anotherfan speed selectionis made or the AUTO mode is selected. turn off FRONT, pressthe AUTO To or AIR FLOW button. system will automatically enter the RECIRC mode and the temperature door will positioned atthe full cold be position for maximum cooling.If the system is not in the AUTO mode, RECIRC should be selected to provid maximum cooling.You can choosethe extreme comfort setting of 60°F (16"C), but the system will not cool any faster by choosing the extreme comfort setting. Heating On cold days,if the AUTO mode is selected, the system will automatically direct air toward the floor and the the FRONT defrost will work better if anyor snow is ice cleared from the hood and the air inlet area between the temperature door will be positioned at the full hot position. You can choose the extreme comfort setting of base of the windshield and hood. the 90°F (32°C) but the system will not warm up any fas Air Conditioning by selecting the extreme comfort setting.the outside If temperature is cold, the fan will be delayed to avoid On very hot days, open the windows long enoughlet to the hot air out. This reduces time required to cool the blowing coldair. Pushing the FAN, AIR FLOW or' the FRONT buttons will override this delay, turn the off interior of the vehicle to a comfortable level. the If AUTO mode and change the speed.. fan system is in the AUTO mode on very hot days, the .r- 3-5