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Emerson Climate Technologies: Variable-Speed Motor

June 4, 2007
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The Ultratech™ variable-speed motor is a four-wire electronically commutated motor with two-way communication. The motor receives commands from the furnace system control board, executes the command, and confirms the command has been completed. The variable-speed motor is a part of the UltraTech communicating system. By sharing information system-wide, this system automatically configures and checks system settings, making looking up and manually setting dip switch settings on indoor blower motors no longer required. According to the manufacturer, the motor has lower cfm levels than PSC motors for improved comfort in recirculation mode, and a large range of cfm points for improved cooling and heating comfort.

Emerson Climate Technologies, 8000 W. Florissant Ave., P.O. Box 4100, St. Louis, MO 63136-8506; 888-923-2323; www.emersonclimatecontractor.com

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