1. Because the size of each apartment is different, 15 cm or 20 cm is not fixed, but should be designed according to the space layout when arranging the floor heating pipes. When you need to pay attention, the spacing should not be too large, otherwise the heating temperature will not reach the standard, and it should not be too small, otherwise the construction will be difficult.
2. When arranging floor heating pipes, pay attention to keep a sufficient safe distance from the wall, so that the use comfort will be higher.