Advice on plumbing Grohe wall hung frame

[jjl]

I'm fitting a wall hung toilet using a Grohe frame and would appreciate advice on connecting the waste to the soil stack (to the right in the image). I am planning to connect the Grohe supplied waste (black pipe) to the stack using solvent weld pipes (don't trust the push fit not to leak) - the black pipe would fit into a 135 deg bend which will connect with a horizontal pipe to a 90 deg bend that will go into the push fit opening in the stack to the right. Will this be too rigid to allow fitting to the frame? Also, I was planning to run the water pipes from the floor behind the waste pipe - is that poor practice, would it be better to route them around the frame?

 

[Rakesh]

I would use a 92.5 deg bend and extend the pipes as necessary with a coupler if needed.
I don’t think you have room for the 135 deg bend but if there is then all good. You’d have to use push fit
For easier mounting and less stress on the pan connector.
It’s fine to run the pipes from the floor within the Frame as long as they are not going to damage the cistern or in the way of any fixings of the frame

 

[Old Account]

View attachment 38322

I'm fitting a wall hung toilet using a Grohe frame and would appreciate advice on connecting the waste to the soil stack (to the right in the image). I am planning to connect the Grohe supplied waste (black pipe) to the stack using solvent weld pipes (don't trust the push fit not to leak) - the black pipe would fit into a 135 deg bend which will connect with a horizontal pipe to a 90 deg bend that will go into the push fit opening in the stack to the right. Will this be too rigid to allow fitting to the frame? Also, I was planning to run the water pipes from the floor behind the waste pipe - is that poor practice, would it be better to route them around the frame?

Hi there,
I never experienced a leak on those pushfit waste pipes. When fitted correctly they are fine. But remember everyone has a different experience and different way of installing pipe works. If you use the pushfit I would use some lubricant. Please remember to have a fall to the waste pipe not too much not too little

 

[king of pipes]

As the guys have stated above a 92.5 degree bend and short piece of pipe will do it the cold supply can be run behind the frame a isolation valve is situated inside the cistern accessible through the flush plate, strengthen the floor before fixing the toilet frame, those walls dont look great timber stud work will be needed to house the toilet frame and for other fixings I usual put 6 fixings in a frame like yours . Kop

 

[Maxine booth]

Do Grohe do a straight outlet soil connector? The I my one I’ve been sent is a bent one.

 

[king of pipes]

Yes they do