Copyright 1996 Carrier Corporation Form No. 58RAV-7PDProductData58RAVHigh-EfficiencyDownflow/HorizontalInduced-CombustionGas FurnaceInput Capacities:50,000 thru 135,000 Btuh®DOWNFLOWHORIZONTAL80% AFUE At Budget PriceCarrier provides an 80% AnnualFuel Utilization Efficiency (AFUE)gas furnace for the budget consciousconsumer and builder. The 58RAVoffers the same high quality youdemand and receive from Carrier.The cabinet is constructed from aspecially selected galvanized steel.There is also double protection for thecabinet. First, aluminized steelsubstrate provides resistance torusting. Then the cabinet is constructedof prepainted steel — the same high-quality finish found on refrigeratorsand dishwashers.The 58RAV offers a hot surfaceignition system which provides asuperior and more reliable ignitionthan older spark relight systems.The heat exchangers are constructedof aluminized steel and covered by a20-year Limited Warranty. They areCarrier’s patented Super-S heatexchangers that improve heat transferand enable downsizing of this furnaceto only 40-in. tall.To improve the sound level, we haveincorporated a soft mount inducerassembly and a slow opening gasvalve.The control board is the brain ofthis induced-combustion gas furnace.It offers a unique self-test featurethat checks all the major functions ofthe furnace within 1 minute. Thecontrol board also features a 3-ampfuse that protects the transformerand control board. Another featureon the control board is an LED statusindicator light to ensure top furnaceperformance.