How do you know the water heater is full?
Check valve is also called pressure relief valves, the main role is, first, the anti reflux, water heater inside the water, that is to say, the water can only flow in one direction, and, when the tap water company water, water heater inside the water will not flow backwards, and will not cause dry, the water heater inside, as long as it is filled with water first, after all there is a bucket of water, water is water, no water, it will not get hot water,,,, another is that, when the water heater in the heating time, thermal expansion,, if there is no pressure discharge, hot water tank the inside of the device will explode, that is, when the water heater will see when heated, the water inlet check valve with water phenomenon,,,,
In the face of the water heater, the water inlet (green), and the left is water (red), and you put on the left side of the water pipe, water valve removed, will open on the right, left, when the outlet water outflow, the water heater inside the water filled,, of course, if you don't open. The tube can be, the water mixing valve pull to the left, can also be, mainly to emptying,,,,
When I finished, I didn't want to say anything,,See a floor, said, electric water heaters are generally water supply valve, when the water is full will automatically close the valve, valve will automatically open when the water heater is lack of water, do not need artificial water, without water thing concerns.Think or talk about it, and, after all, the first floor of the said too close to the edge,,