Is a multi-branch gas supply connection usable for an air conditioner?

Dear forum members!

I would like to prepare my house, which is to be built, for a split air conditioning system. A (4) service entry is planned into the technical room. Since we will not be using gas, I am asking you whether it is allowed to use the last free passage for the AC – either for the smaller pipe of the coolant or the larger one of the evaporated gas (I hope I have understood the cycle correctly :rolleyes:). According to my calculation, I would then only need to leave one more smaller hole through the basement exterior wall.
Since it is a prefabricated house, the manufacturer is reluctant to compromise the "thermal envelope" by installing empty conduits to the outside if it would serve the preparation of condensate drains (upper floor + ground floor).
Maybe someone has experience or tips regarding this? As far as I understand, you can hardly want to lead the condensate all the way into the basement through any pipe shafts, right? Then it would have to drip into a sink or something?

Thanks for your advice,
Reltaw

Well, cutting open the refrigerant lines is not optimal either. How big is the fourth passage in your [Mehrsparteneinführung]?
Of course, you can connect condensate to any random drain pipe.

So we also use our gas division for something else. Is the house already built or is the basement done? Maybe you can simply run something out there additionally. We have a timber frame house and neither the house manufacturer nor we find it good to break through the thermal envelope, so besides the one empty conduit, we also had two KG pipes laid in the base slab and routed out, one for the outdoor unit of the heat pump and one for a future supply line of a wallbox from the carport to the utility room.

In the descriptions it says DN 25, which I cannot "translate". For the other 3 categories there is always a millimeter specification as well.

DN25 is already tight, but both copper pipes including insulation should pass through.

Thank you!
How many mm could that be?
Is it allowed? I have the feeling that the suppliers refer to relatively strict regulations.