A2A Heatpump / Aircon Multisplit (Heating and Cooling)

Hi. Am looking at getting the above installed but a lot of installers, if I can even get hold of one, are just not answering my questions regarding a few things.

Each indoor unit will need a condensate drain fitting in order to drain the water away, so as I understand each unit will have a pipe going through the wall behind, or nearest available external wall, which are normally gravity fed.

Is this just a pipe sticking out the wall or is it plumbed into something else and all connected?

Some pics of the outside of peoples installs would be awesome to give me a better idea of what it will look like.

Thanks :)