My home has a sump pump running to a floor drain. While no longer strictly legal in my city, this arrangement has been in place for many years and there isn't a convenient way to get the water outside. The sump doesn't run enough to warrant grave concerns.
The drain is a bit unique, though. It has a 1-1/2" opening all the way up, without the usual collection bowl. It looks similar to this. The sump drain line nearly fills it by itself. I'm not sure what's below the surface of the opening or the concrete slab.
I'd like to securely attach the sump drain and softener discharge lines to the floor drain, while still allowing the floor-level furnace condensate line (which requires an air gap) to drain effectively.
The furnace condensate line does not have a pump. It relies on gravity alone.
Is this feasible? How would you do it?