A thermostat consists of two basic parts: the base and the cover. A subbase can also be added to a thermostat to provide fan and various switch functions (see Figure 4-11). The cover protects the internal wiring of the thermostat base from dust, lint, and other possible contaminants. It also contains the temperature-setting lever, the …
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A thermostat is an automatic device designed to maintain temperature control. It accomplishes this function by reacting to temperature changes with adjustments of a controlled device such as a damper or valve motor or the automatic firing equipment (gas burner, oil burner, or coal stoker) in space-heating furnaces and boilers. Because of its specific function, …
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