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From inside (document excerpt):
Product Data ® 58MVP Deluxe 4-Way Multipoise Direct-Vent Variable-Capacity Condensing Gas Furnace Series 121 Input Capacities: 40,000 thru 120,000 Btuh Variable capacity, the ultimate in heating comfort. With the model 58MVP WeatherMakerTM Infinity Furnace, we’ve taken the ultimate in heating comfort and made it better. The model 58MVP is available in 6 heat/airflow combinations. The unit has a 4-way multipoise design and can be installed in upflow, downflow, or horizontal positions covering up to 24 different applications.
Heating, Ventilating and Air Conditioning User Manual Free Download. HAVC Operator’s Manual. Gas Furnace and AC Free Instruction Manual Download PDF.
The WeatherMaker Infinity achieves industry-leading ultra-high efficiency at up to 96.6 Annual Fuel Utilization Efficiency (AFUE). Efficient performance is enhanced through the variable-capacity design. To maintain ideal comfort, the control system of the WeatherMaker Infinity automatically adjusts, maximizing the use of low operating speeds that produce near silent furnace operation while meeting the exact heating needs. This unit is designed to keep the indoor temperature within 1 degree of the thermostat setpoint. Because it operates in low speed most of the time, the model 58MVP uses up to 80% less power and less fuel than single-capacity furnaces. In addition to providing optimum comfort, the model 58MVP has a sealed combustion system. This system brings combustion air from outdoors to the furnace and vents flue gases safely outside the home. Because it is sealed, operational noise is minimal. A sealed combustion system also means fewer cold drafts and less air infiltration. Quality materials are the key behind the model 58MVP’s outstanding Carrier Corporation Form 58MVP-4PD performance. Carrier stands behind quality. We offer lifetime warranty protection* on the heat exchangers, the heart of the WeatherMaker Infinity. The microprocessor control center, the variable-speed inducer motor, and the variable-speed blower motor are all backed by a 5-year limited warranty. There is a 3-year warranty on hot surface ignition (HSI). The versatile 4-way multipoise design in conjunction with variable capacity makes the 58MVP ideal for use with split-system cooling, including 2-speed or variable-speed units. A Carrier electronic air cleaner, humidifier, thermostat, comfort ventilator, and Comfort ZoneTM will provide year-round comfort and efficiency. Designed for durability, comfort, and reliability, the model 58MVP WeatherMaker Infinity is the ultimate in versatile, efficient comfort. 58MVP FEATURES/ BENEFITS Variable Heating Capacity — On the coldest days of the year, the 58MVP Furnace has the capacity to heat your home. On moderate days when less heat is required, this furnace will regulate itself to a lower capacity — providing a comfortable home and minimizing operating costs. Insulated Blower Compartment — The acoustical insulation reduces air and motor noise for quiet operation. Certifications — The 58MVP units are A.G.A. and C.G.A. design certified for use with natural and propane gases. The furnace is factory-shipped for use with natural gas.