I'm being driven mad trying to plumb in our new toilet and hope that somebody can offer advice. Our bathroom is currently empty apart from the old pink toilet pan and we don't want to take out the pan until we can plumb in the new one but we can't finish tiling the floor until the old pan is out. It's catch 22 
We live in a block of flats on the third floor. In the corner of our bathroom runs a galvanised metal soil stack which is shared with the other flats above and below us. The soil stack has three connections - one for a basin, one for a bath and one for a toilet.
Currently we have a pink toilet connected with a ceramic pink 90 degree connector. This is connected to a plastic pipe which fits into another short plastic pipe, this then fits into another short plastic pipe (all the plastic pipe is painted pink) and finally the last pipe goes into the soil stack via the connection. I can see that the connection on the soil stack is slightly angled presumably for drop.
Our new toilet is a Twyford Pure Energy back to wall. It's going to be against a false wall containing the cistern and pipework.
The Twyford Pure Energy BTW pan has a spigot that is 115mm from the back of the actual pan. There's a technical drawing available here. This is our first problem. Twyfords provide the toilet with a plastic extension pipe (called 'Specific Plastic Pipe for Horizontal outlet') that connects to the spigot. I naively thought that we could use this to connect to the pipework but several plumbers' merchants and the technical advice helpline at Multikwik tell me that you can only connect a pan connector direct to the spigot on the pan. This means that we are starting out 115mm less than the back of the pan.
Our next problem is that we are moving the toilet away from the soil pipe and the new distance from the centre of the spigot to the soil pipe is 1200mm. Ideally we'd like to get rid of as much of the multiple connectors as possible but recognise that the soil pipe connection and the back of the toilet are not going to line up directly.
The multikwik technical helpline are lovely and they suggested that we buy a Long Straight WC Connector (MKS4) and connect this direct to the spigot. We then use a Multilink (MKL1) to connect the Long Straight WC Connector to a 90 degree bend (MKB2190) and then use another Multilink to connect to a flexible connector which will then give the flexibility to move horizontally to connect to a piece of standard pipe which will then connect to the soil stack.
This all sounds fantastic but very complicated and as it's going to be boxed in we want to make sure that it's all going to be secure. In addition nobody holds the Multilink as stock and the soonest we can get one is Friday which loses us several days.
The fake wall to house the cistern is not yet built but the concealed cistern is a Grohe Eau 2 and the minimum depth for the wall appears to be 420mm including plasterboard and tiling (this is the minimum to the connection of the flowpipe which is almost at the back of the pan). The tiles are 9mm, there is then adhesive (nominally 6mm) and plasterboard 12.5mm thick so this reduces the space for the waste to 280mm.
We don't want to connect a flexible connector direct to the pan spigot as we want to first fix and have a pipe sticking out to connect to (this will allow us to have the loo available at night and then disconnect during the day whilst the wall is being plasterboarded and tiled). I'm not happy doing this with a flexible connector.
Our final problem is what sort of pipe to buy to connect to the soil stack connector. Currently the pipe goes into the metal connection. However, the ones I've found in the Polypipe catalogue seem to have either a plain end which is the same size as the connection or a socket which appears to go on the outside of the connection. Multikwik tell me that their finned fittings would go into the soil pipe connector but their solution involves buying a length of pipe to go between the soil stack connection and the end of the flexible connector.
Can anybody help me with a simple elegant solution to this problem? Any help gratefully received. I've tried to cover everything but I've missed anything, please ask
We live in a block of flats on the third floor. In the corner of our bathroom runs a galvanised metal soil stack which is shared with the other flats above and below us. The soil stack has three connections - one for a basin, one for a bath and one for a toilet.
Currently we have a pink toilet connected with a ceramic pink 90 degree connector. This is connected to a plastic pipe which fits into another short plastic pipe, this then fits into another short plastic pipe (all the plastic pipe is painted pink) and finally the last pipe goes into the soil stack via the connection. I can see that the connection on the soil stack is slightly angled presumably for drop.
Our new toilet is a Twyford Pure Energy back to wall. It's going to be against a false wall containing the cistern and pipework.
The Twyford Pure Energy BTW pan has a spigot that is 115mm from the back of the actual pan. There's a technical drawing available here. This is our first problem. Twyfords provide the toilet with a plastic extension pipe (called 'Specific Plastic Pipe for Horizontal outlet') that connects to the spigot. I naively thought that we could use this to connect to the pipework but several plumbers' merchants and the technical advice helpline at Multikwik tell me that you can only connect a pan connector direct to the spigot on the pan. This means that we are starting out 115mm less than the back of the pan.
Our next problem is that we are moving the toilet away from the soil pipe and the new distance from the centre of the spigot to the soil pipe is 1200mm. Ideally we'd like to get rid of as much of the multiple connectors as possible but recognise that the soil pipe connection and the back of the toilet are not going to line up directly.
The multikwik technical helpline are lovely and they suggested that we buy a Long Straight WC Connector (MKS4) and connect this direct to the spigot. We then use a Multilink (MKL1) to connect the Long Straight WC Connector to a 90 degree bend (MKB2190) and then use another Multilink to connect to a flexible connector which will then give the flexibility to move horizontally to connect to a piece of standard pipe which will then connect to the soil stack.
This all sounds fantastic but very complicated and as it's going to be boxed in we want to make sure that it's all going to be secure. In addition nobody holds the Multilink as stock and the soonest we can get one is Friday which loses us several days.
The fake wall to house the cistern is not yet built but the concealed cistern is a Grohe Eau 2 and the minimum depth for the wall appears to be 420mm including plasterboard and tiling (this is the minimum to the connection of the flowpipe which is almost at the back of the pan). The tiles are 9mm, there is then adhesive (nominally 6mm) and plasterboard 12.5mm thick so this reduces the space for the waste to 280mm.
We don't want to connect a flexible connector direct to the pan spigot as we want to first fix and have a pipe sticking out to connect to (this will allow us to have the loo available at night and then disconnect during the day whilst the wall is being plasterboarded and tiled). I'm not happy doing this with a flexible connector.
Our final problem is what sort of pipe to buy to connect to the soil stack connector. Currently the pipe goes into the metal connection. However, the ones I've found in the Polypipe catalogue seem to have either a plain end which is the same size as the connection or a socket which appears to go on the outside of the connection. Multikwik tell me that their finned fittings would go into the soil pipe connector but their solution involves buying a length of pipe to go between the soil stack connection and the end of the flexible connector.
Can anybody help me with a simple elegant solution to this problem? Any help gratefully received. I've tried to cover everything but I've missed anything, please ask
