The wall-hung boiler is responsible for the circulation of water in the heating system. Because the water contains impurities and is acidic, there will be some corrosion inside the radiator and the pipe. Most of the radiators we use are made of cast iron. The sand mold residue and other impurities in the radiator cannot be completely washed out during the installation. In addition, the water in the heating system is always closed, and the heating part of the boiler is There is no filter, so the rust residue inside the radiator and the pipe and the impurities of the water itself will enter the heat exchanger again through the circulating water pump of the wall-hung boiler. These impurities are continuously decomposed under high temperature conditions, and some of them become scale adhesion. The diameter of the tube is made thinner on the inner wall of the heat exchanger. Therefore, the pressure of the circulating water pump is further increased, and the long-term operation will cause the circulating water pump of the wall-hung boiler to decrease or even jam, which seriously affects its service life.
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