I had two in wall toto toilets installed and brand new plumbing throughout the house. The in wall unit has a black drain elbow that feeds directly into the pvc drain. My plumber cemented that elbow to the pvc drain. I think a rubber connector should have been used at that junction. I'm concerned that future repairs or replacement will be made much harder by what he did.

Please post a picture of the setup if possible...black pipe/fittings do not usually get connected together with PVC...;)


Mark