I have a quick question. I found a home with a TPRV line tee’d into the AC system condensate drain. Both lines enter a concrete poured slab after this connection, and neither line has an observable termination. The AC (and TPRV line) are clogged up somewhere below the pad….so if the TPRV tries to vent, all the water will go out the Tee to the furnace and either into the evaporator drain, or out the open top of the condensate line Tee. Also there is no pan, or pan drain on the water heater. This house just had a new hot water installed, and they told the lady that it was all up to code now…after the new heater was installed. The furnace and hot water heater are on an 18” elevated platform in the middle of the home in a utility room. If the water heater started leaking, damage would occur to the home (sheetrock and carpet) due to lack of the pan.
Most homes in this area are a poured slab (central Texas), and so I was wondering if it was acceptable to run the TPRV line (as its own line) up into the attic, and then down and out the back side of the home to term 6” above grade. I know that you are not suppose to run TPRV lines “up hill,” but the present installation is by far the greater evil, 2 Tees, and one tee has an open end like all condensate lines normally have.
The present installation will result in a hot water geyser in the furnace evaporator, or all over the front of the furnace at the open Tee… What should I recommend to the client? Did the Plumbers who installed the new hot water heater screw this lady, and should it be plumbed more safely, and a pan added. Also can you plumb a hot water pan drain into a condensate drain line? …Or should all three lines be separate and individual? The home was built in 1981.