ᐅ Ground connection for brine-to-water heat pump with multiple service lines?

Hello everyone, I have a question and hope to gather some input:

How SHOULD the piping for the brine lines (ground loop) be installed when entering the house? Does it need to be routed through water- and gas-tight conduits, or are standard sewer pipes (e.g., PVC drainage pipes) sufficient?

We are currently preparing the construction plans and I want to inform the architect about which penetrations should be included in the utility room. Otherwise, he will probably just say, "Ask your heating installer or our building services partner (for a fee)."

Perhaps someone here has installed a brine-to-water heat pump and can directly advise on what is important regarding the entry into the utility room. Unfortunately, drilling companies are so busy that you have to wait quite a while even just for a quote.

Thanks in advance!