Quite unexpectedly I have faced the problem of “left and right”.
It turned out that the water tank can be installed to the left or to the right of the house. And depending on the location of the water tank and the water supply pipe to it, the booster box will have 2 different connections.
Roughly speaking, the pipe into which the booster box needs to be cut can pass in front of or behind the booster box.
Accordingly, it is necessary to provide for the output of the connection pipes forward or backward.
The problem is so commonplace that you never really think about it until you encounter it live.