From inside (document excerpt):
58DLA/58DLX Deluxe Induced-Combustion 4-Way Multipoise Furnace Installation, Start-up, Operating, and Service and Maintenance Instructions -Series 100 THE WEATHERMAKER® 8000 GAS FURNACE The 58DLA/DLX 4-way Multipoise Gas Furnaces offer deluxe features not found in other single-stage 80% gas furnaces. Carrier’s QuietTech noise reduction system makes the WeatherMaker 8000 an incredibly quiet induced draft gas furnace.
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The exclusive Carrier Media Cabinet provides an economic way to add high performance air filtration to homes. The WeatherMaker 8000 control system provides a dehumidification mode, a third motor speed selection for continuous fan operation selectable at the thermostat, and fault code storage in the event of power outages. Applications are easy with 4-way multipoise design, through-the-furnace downflow venting, 13 different venting options, and a door designed for easy service access. An inner blower door is provided for tighter sealing in sensitive applications. The 58DLA/DLX furnaces are approved for use with natural or propane gas, and the 58DLX is also approved for use in Low NOx Air Quality Management Districts. STANDARD FEATURES – QuieTech noise reduction system – Media Filter Cabinet Included – Microprocessor based control center Dehumidification selection for summer-time cooling Adjustable heating air temperature rise Adjustable cooling airflow ComfortFan–Constant fan speed selectable from thermostat LED diagnostics and self test feature Stores fault codes during power outages – 4-way Multipoise furnace, 13 vent applications – Hot surface ignition (HSI) – Draft safeguard switch to ensure proper furnace venting – All models are Chimney-Friendly when used with accessory vent kit – Insulated blower compartment – Heat pump compatible – Residential installations eligible for consumer financing through the Retail Credit Program – Twinning in Upflow, Downflow and Horizontal LIMITED WARRANTY – 20-year warranty on “Super STM ” heat exchanger – 3-year warranty on microprocessor control and hot surface ignition – 5-year parts warranty on all other components Catalog No: 535-80104 Form No. 58DL-3SI 12-02 Single-Stage Deluxe Induced-Combustion 4-Way Multipoise Furnace Cancels.