Hello all! First post, so here goes.
We remodeled a spare bedroom, adjoining our master bedroom, into a master bath. The house is built on a post tension slab, and coring through the footer was to risky due to not being able to positively identify the post tension cables, so the plumber recomended a back outlet toilet. I was reluctant, but decided to go with it to keep the bathroom layout we had decided on.
The toilet is on an outside wall, and the plumber installed a Kohler K-3578 back outlet toilet with a Sloan Flushmaster, and installed an AAV outside the house using a 3" sanitary tee with the 1.5" AAV directly on the outlet of the top run with a 3" X 1.5" bushing.
It never really flushed great, but the flushing became worse and worse regardless of solid or liquid waste. We replaced the AAV and it seemed to work better again, but not for long. It finally got to the point were it will not push the water out of the bowl, so I finally started some trouble shooting.
If I remove the AAV is flushes, but water comes out of the top run where the 1.5" AAV port is. My initial thought was the water was blocking the AAV just long enough to keep the toilet from flushing, and added an extension to the 1.5" pipe to raise the AAV to the 4" minimum suggested in the instructions. Again I was doubtful because I felt the water would still block the 1.5" AAV port regardless, but I tried it anyway, and it didn't work with the AAV installed, but did without it.
I then constructed a baffle to fit down inside the tee to divert the water downward when it entered the branch of the tee from the toilet, and not be able to block the 1.5" AAV port. That did not work, and still allowed water to come up out of the port. I removed the baffle and added a length of pipe to extend down into the tee so the water wouldnot be able to immediately block the hole. This was sccessful at keeping the water from coming back up through 1.5" AAV port, but it still did not allow the toilet to flush with the AAV installed. I am now convinced the added pressure from the pressure assist is closing the AAV not allowing it to work as it should.
Any positive input it appreciated.
Thanks Darrin
We remodeled a spare bedroom, adjoining our master bedroom, into a master bath. The house is built on a post tension slab, and coring through the footer was to risky due to not being able to positively identify the post tension cables, so the plumber recomended a back outlet toilet. I was reluctant, but decided to go with it to keep the bathroom layout we had decided on.
The toilet is on an outside wall, and the plumber installed a Kohler K-3578 back outlet toilet with a Sloan Flushmaster, and installed an AAV outside the house using a 3" sanitary tee with the 1.5" AAV directly on the outlet of the top run with a 3" X 1.5" bushing.
It never really flushed great, but the flushing became worse and worse regardless of solid or liquid waste. We replaced the AAV and it seemed to work better again, but not for long. It finally got to the point were it will not push the water out of the bowl, so I finally started some trouble shooting.
If I remove the AAV is flushes, but water comes out of the top run where the 1.5" AAV port is. My initial thought was the water was blocking the AAV just long enough to keep the toilet from flushing, and added an extension to the 1.5" pipe to raise the AAV to the 4" minimum suggested in the instructions. Again I was doubtful because I felt the water would still block the 1.5" AAV port regardless, but I tried it anyway, and it didn't work with the AAV installed, but did without it.
I then constructed a baffle to fit down inside the tee to divert the water downward when it entered the branch of the tee from the toilet, and not be able to block the 1.5" AAV port. That did not work, and still allowed water to come up out of the port. I removed the baffle and added a length of pipe to extend down into the tee so the water wouldnot be able to immediately block the hole. This was sccessful at keeping the water from coming back up through 1.5" AAV port, but it still did not allow the toilet to flush with the AAV installed. I am now convinced the added pressure from the pressure assist is closing the AAV not allowing it to work as it should.
Any positive input it appreciated.
Thanks Darrin