So you have a furnace with AC coil on top.
There’s a drain pan inside this unit where the coil is.
There are a few reasons why you could be leak water.
Drain pan clogged
Drain pan broke or Incorrectly pitched
You would have to open the unit and look inside.
The first picture is what’s on top of your xr80
2nd picture that’s what it’s gonna look like inside
The black part is the drain pan. May look slight Different.
Don’t open the xr 80 furnace. You should have a professional take a look at this. Do at your own risk :)