Carrier Owners Manual - Enlarge page 1 of 8
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From inside (document excerpt):
Product Data HEATING & COOLING 58TMA Weathermaker® 8000 2-Speed High-Efficiency Downflow/Horizontal Gas Furnace Input Capacities: 65,000 thru 125,000 Btuh Two-Speed Heating for High-Efficiency Gas Furnaces Carrier continues to lead the industry with our new Weathermaker® 8000 Two-Speed Induced-Combustion Gas Furnace. Our furnace operates at 2 different speeds which provide outstanding home comfort.
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This furnace is built with the most advanced manufacturing equipment processes and technology available in order to ensure top quality. Packed into the cabinet are the industry’s foremost dealer and homeowner features. The 58TMA Downflow/Horizontal Furnace is the latest addition to Carrier’s list of product leadership in the gas furnace industry. These 2-speed, induced-combustion, gas-fired furnaces offer not only low installation costs, but fuel economy as well–delivering an Annual Fuel Utilization Efficiency (AFUE) rating of 80.0%. The Carrier Weathermaker 8000 Two-Speed utilizes a hot surface, silicon carbide ignition system to save energy and increase reliability. Our engineers have incorporated the patented S-shaped 4-pass heat exchanger, a soft mount 2-speed inducer assembly, and a 2-stage slowopening gas valve to minimize sound level. The Super-S heat exchanger provides better heat transfer while enabling us to make a compact furnace, providing more room in closet, utility room, and short basement installations. The heat exchanger is constructed of aluminized steel and is backed by a 20-year Limited Warranty. DOWNFLOW HORIZONTAL 1994 Carrier Corporation Form 58TMA-5PD This document was created with FrameMaker 4.0.4 The Carrier Weathermaker 8000 Two-Speed Gas Furnace will meet your home heating requirements. This furnace family provides the widest range of heating capacities available. The superior attention to cabinet detail is obvious. The Carrier Weathermaker 8000 Two-Speed features 1-piece, seamless, wraparound construction. There are no spot welds on the exterior surfaces of the furnace. There is also double protection for the cabinet. First, a galvanized steel substrate provides resistance to rusting. Then the cabinet is constructed of prepainted steel–the same high-quality finish found on refrigerators and dishwashers. Perhaps the most advanced feature of the Carrier Weathermaker 8000 TwoSpeed is the state-of-the-art microprocessor control center which shows true leadership in furnace technology. The simplified electronics in this control provide high reliability while performing many of the functions of older, electro-mechanical devices in other furnaces. The control provides blower delay at start-up and shutdown, while monitoring furnace operations and functions. In the unlikely event of a service call, in less than a minute, the technician can use the components-test feature to determine if a major component has failed. The control will check itself, then the low and high inducer, silicon carbide ignition, low-, medium- and high-speed blower. Another benefit of the control is the 3-amp fuse that protects the transformer and control.