In a new construction home, there's some plumbing that I'm not familiar with. It looked like a funnel drain to me. The builder described it as a "pressure release and condensation drain for the furnace and tankless water heater". What I find particularly odd is it looks like there's open space between the white pipe and the black funnel beneath it. Is this normal/appropriate?
Best Answer
It is a Tundish drain which allows the liquid to continue while preventing any reverse contamination through use of an air gap.