1.To check the quality of water strictly, we must check the quality strictly for water and softened water in the system and softened tank. and then pour into the pipeline if the quality of water is qualified.

2.In order to the impurities enter the heat exchanger, we should divide into the heat exchanger and heat supply system.the heat exchange system is merged into the system after a period of cycles

3.In order to prevent cloging up the heat exchanger, dirt separator and filter should be cleaned aperiodically and keep pipe clean in the heat exchange system.