SiBE12-908 Main FunctionsFunction and Control 261.8 FRESH AIR SUPPLY VENTILATIONOperation∗ Refer to the operation manual for details.Features The air supply ventilation system using only fresh air.Any contaminated outdoor air is purified in two stages of indoor unit and outdoor unit. Freshair from which pollen and dust were removed is supplied into the room.1. Purifying air in the outdoor unitThermal catalyst containing in the humidifying rotor decomposes unpleasant odor and alsoremoves exhaust gases (NOX , SOX ).Manganese catalyst used to treat the automotive exhaust gas is adopted for the thermalcatalyst.2. Purifying air in the indoor unitThe air supply filter is placed at the humidifying hose outlet of the indoor unit side.The air supply filter removes about 97% pollen and dust.3. Controlling temperatureThe fresh air passed through the air supply filter is cooled (or heated) in the indoor unit andsupplied into the room.You can keep comfortable temperature and also replace air because the ventilation isperformed while temperature is controlled.(R9425)FRESH AIR SUPPLYVENTILATION(R9415)2. Pollen and dust areremoved.Air SupplyFilterFresh AirIndoor UnitIndoor IndoorUnitFresh Air3. TemperatureControlOutdoorOutdoor UnitOdor Pollen Dust1. Unpleasant odorsare decomposed.ThermalCatalystUnpleasantOdors,Pollen