Carrier Owners Manual - Enlarge page 1 of 8
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From inside (document excerpt):
Product Data HEATING & COOLING 58RAV High-Efficiency Downflow/Horizontal Induced-Combustion Gas Furnace Input Capacities: 50,000 thru 135,000 Btuh 80% AFUE At Budget Price Carrier provides an 80% Annual Fuel Utilization Efficiency (AFUE) gas furnace for the budget conscious consumer and builder. The 58RAV offers the same high quality you demand and receive from Carrier. The cabinet is constructed from a specially selected galvanized embossed steel with a clear coating.
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This material provides the same protection from humidity and rust as our other cabinets. The 58RAV offers a hot surface ignition system which provides a superior and more reliable ignition than older spark relight systems. The heat exchangers are constructed of aluminized steel and covered by a 10-year Limited Warranty. They are Carrier’s patented Super-S heat exchangers that improve heat transfer and enables downsizing of this furnace to only 40 in. tall. To improve the sound level, we have incorporated a soft mount inducer assembly and a slow opening gas valve. The control board is the brain of this induced-combustion gas furnace. It offers a unique self-test feature that checks all the major functions of the furnace within 1 minute. The control board also features a 3-amp fuse that protects the transformer and control board. Another feature on the control board is a LED status indicator light to ensure top furnace performance. DOWNFLOW HORIZONTAL 1994 Carrier Corporation Form No. 58RAV-4PD 2 HEAT EXCHANGER 58RAV A89217 Model number.
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