I need to buy and install a split AC and I have a small issue.
The AC has two copper pipes for refrigerant gas to flow through and one hose to eliminate condensation water, and normally, the hose should hang below the AC unit to let gravity take out the condensate water. But because of some load bearing walls (in which I'm not allowed to make any holes) I'm limited in the location where I can mount the AC units. Because of that, the copper pipes and the condensate hose have a weird route which isn't a straight downfall from the internal unit to the external one. They don't go above the internal unit or below the external one, but the general shape is that of an U where water can stagnate.
Is this a problem? The copper pipes transport gas so I think it doesn't matter what shape or route they take, but the hose will retain some water in the middle.
What are the rules to follow when arranging the condensate hose? I don't want to buy the AC units and find out that there will be problems with evacuating the water.