There are two sets of water distributors for floor heating. The incoming water is relatively hot, the return water of one group is hot, and the return water of the other is not hot. Why is the house not hot as a result?

Floor heating construction problems: The construction personnel did not carefully construct the floor heating coils, and the pipelines may have dead bends or flattening, resulting in poor water flow and increased resistance. It is also possible that the spacing between row pipes does not meet the design requirements. This was not visible from the outside after we moved in. If the floor heating effect was normal before, but it was only this year that the return pipe was not hot, this would not be the reason.

The floor heating pipes have not been cleaned all year round: If the heating effect of the floor heating was normal before, it was only this year that the floor heating was not hot. This may be because the floor heating pipes have been used for a long time and will produce impurities and scale. After several years of long-term adhesion to the inner wall of the water pipe.

If it is not cleaned and maintained in time, the inner diameter of the floor heating pipe will gradually become narrower and the water flow will become smaller and smaller, which directly affects the heating effect. In this case, you need to find a floor heating cleaning company to clean the floor heating water pipes.

Extended information:

Notes:

Any floor has the defect of expansion and deformation when exposed to heat, so when using a geothermal system, it must be heated step by step. When the geothermal heating system is enabled again after a long period of time, the heating program must be strictly followed as it was the first time it was used. By the same token, when the weather warms up and the geothermal system is no longer needed for indoor heating, there is a process of shutting down the geothermal system. If the cooling rate is too fast, it will also affect the service life of the floor.

When using geothermal heating for the first time, the temperature should be gradually raised in the first three days of heating. The water temperature should be 18°C ​​on the first day, 25°C on the second day, 30°C on the third day, and can only rise to 30°C on the fourth day. The water temperature is 45℃. If it heats up too quickly, the floor may crack and warp due to expansion. Moreover, when using geothermal heating, the surface temperature should not exceed 30°C. At this time, the room temperature is below 22°C, the most suitable ambient temperature for the human body, and the service life of the floor can also be guaranteed.

Baidu Encyclopedia-Floor Heating