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By maintaining precise secondary voltage output
Contactor-Grade Construction: Built to withstand the high-temperature environment of the furnace burner vestibule
This part is frequently used to resolve intermittent furnace ignition and "no flame sensed" errors
ideal for analog sensors
featuring a 350 PSI burst pressure rating
Resideo TH6220U2000 Thermostat 30067439-890 By maintaining precise secondary voltageThe Resideo TH6220U2000 is a versatile T6 Pro Programmable Thermostat engineered for multi stage applications, supporting up to 2 Heat 2 Cool Conventional Systems and 2 Heat 1 Cool Heat Pumps. Designed with a flexible scheduling architecture, it allows technicians to configure 7 day, 5 1 1 day, 5 2 day, or non programmable modes depending on the clients preference. This unit operates on 20 30 Vac and offers dual power options, running via C wire