Which connections are necessary for outdoor units of heat pumps?

We have the problem that our utility room is not located on an exterior wall. Since a heat pump requires an outdoor unit, the installation of a heat pump is not so easy for us. However, we have two empty conduits, which were originally intended for a water-bearing fireplace, that run from the utility room to an exterior wall. I need to check again carefully, but I believe they are two multilayer composite pipes. Now my question: can these pipes be used for connecting a heat pump (air or geothermal)? Otherwise, we would have to completely tear up entire walls just to get the lines outside somehow,

And what type of heat pump is it (Split air-to-water heat pump, Monoblock air-to-water heat pump, brine-to-water heat pump, ...)?

That is not yet decided. The existing pipes go to the garden and to the terrace, and I would rather not have such a loud air-water heat pump there. Whether a brine-water heat pump would be worth it then would still need to be considered.

Well, pipes with insulation have to go through there. They are relatively thick and stiff. What DN do you have?
90° bends are not good either.
In my case, a larger KG pipe was specially laid through the base plate for the lines to the heat pump. But the executing heating engineer preferred to make a core drilling through the wall. It was too difficult for him to get through there with insulation. However, that was also because the outdoor unit was directly on the other side of the wall. If you have more distance, the lines might be easier to install...