An electric water heater thermostat tells the heating elements when to heat up. Most electric hot water tanks have two elements and two thermostats. The upper thermostat acts as a coordinator between the two elements. When the water in the top part to the tank is hot enough, it lets the lower thermostat go into action.Click to see full answer. Thereof, how do electric hot water heater thermostats work?Depending on the gallon size of the tank, an electric water heater consists of one or two thermostats which regulate the temperature of the water. The thermostats work by turning the heating elements on when the water cools below a particular temperature.Secondly, what happens if you wire a water heater backwards? If it is piped backwards, the dip tube will take the water from the bottom of the tank. This will be hot to begin with and then it will be cool as soon as the cooler heavier water coming into the top of the tank to replace the hot water gets a chance to descend to the bottom. In respect to this, how does a water heater thermostat sense temperature? The thermostat is a thermistor that responds to heat by producing a small electric current. The current increases when water temperature increases, and drops when temperature drops. Changes in the electric current cause gas control to turn ON and OFF. When gas control turns ON, it releases gas to burner.Should both thermostats on water heater be set the same?If your water heater has two thermostats, adjust both the same amount. The top thermostat should be a few degrees higher than the bottom.
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