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Circulator and inducer controls for warm air furnaces. Provides blower delay on and off timing, limit and thermostat interface, and central appliance wiring hub.
Universal electronic fan control for gas furnaces, replaces multiple models. Includes instructions and special wire harnesses for easy replacement.
ST9103A integrates control of burner and circulating fan operations in an oil furnace.Two speed circulator for oil appliances. Isolated line voltage limit interface and isolated relay connection to oil primary.
ST9120A,C,G integrate control of combustion blower and circulating fan operations in a gas warm air appliance. Two speed circulator plus inducer control for gas appliances. No pressure switch precheck.