This plastic pipe is called a diversion pipe, which will release pressure when the water pressure in the pipe is too high. After the water in the water heater is heated, the pressure in the water tank will rise. When the pressure reaches a certain value, the water will flow out of the overflow valve through the hanging pipe.

In the process of heating water, the heated volume of water in the water heater liner will expand, resulting in high pressure in the liner. At this point, the pressure relief valve will open and unload some water to release excessive water pressure. When the tap water supply pressure is too high and exceeds the pressure relief value of the pressure relief valve, the pressure relief valve will continue to leak water.

Maintenance of water heater

Regularly carry out system blowdown to prevent pipeline blockage; And clean the water tank to ensure the water quality is clean. When discharging sewage, as long as the water inflow is normal, just open the drain valve until clean water flows out of the drain valve.

Regularly remove the dust and dirt on the transparent cover plate of the solar collector, keep the cover plate clean and ensure high light transmittance. Cleaning should be carried out in the early morning or evening when the sun is not strong and the temperature is low, so as to avoid the transparent cover plate being crushed by cold water.

For vacuum tube solar water heater, it is necessary to check the vacuum degree of vacuum tube or whether the inner glass tube is broken. When the barium-titanium getter of vacuum tube turns black, it shows that the vacuum degree has decreased and the collector tube needs to be replaced.