Aprilaire 4400 owner manual Model 4200

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Media Air Cleaners

Model 4200 & 4400

Owner’s Manual

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Contents Model 4200 Introduction Common Pollutants PerformanceOperation To change the setting see Figure MaintenanceFilter Life Indicator Setting the Replacement Frequency Aprilaire 10 Year Clean Coil Commitment Replace BatteryChanging the Filter Check one Filtering Media Replacement RecordWarranty Registration Limited Warranty