Home introduction brine-water heat pump with (multiple) branches?

Hello everyone, unfortunately I am looking for a wolf regarding the following question:

How MUST the piping of the brine lines into the house be done? Also via water- and gas-tight piping sections or are simple KG pipes sufficient?

We are currently in the execution planning phase and I would like to inform the architect which penetrations should be shown in the utility room, because he will just say again "ask your heating engineer or our building services partner (for a fee)"

Maybe one of you has installed a brine-water heat pump and can tell me directly what is important when introducing it into the utility room. Unfortunately, the drilling companies are also so busy that you have to wait a long time even for an offer.

Thank you all

Maybe one of you has installed a brine-water heat pump and can tell me directly what matters when introducing it into the utility room.

KG pipes were used by us. Multi-utility entry only for the "normal" media.

Great, so DN50 should be sufficient since the brine pipes are, I believe, 32mm. In total, then 2x DN50 for supply and return.

2x 100mm KG conduits for the brine-water heat pump. The plumber will complain about 50mm. Then the multiple-service entry, of course, and we also have an additional 3x 100mm KG for "miscellaneous". Currently, these are intended for the pressure pipe to the cistern, external water to the bike shed, and additional cables outside (signal and power).

With us 2x 100 Doyma ring gasket

With so little information, one is supposed to provide expert advice? Is it in the basement? Is it a WU basement? Is a radon seal required? Post #5 is certainly the best but also the most expensive solution.