Y plan to S plan

[Dave Thornley]

Have thought for a while to swap my Y plan to an S plan as the 3 port valve is playing up. I have the 2 port valves so no problem there. My question concerns the need to remove the 3 port valve a fit a copper T piece, mine is done in 28mm. I am wondering could I not leave the body of the 3 port valve in situ, after removing the motor and the rubber ball from inside to save disturbing the pipework, especially that going to the HW cylinder. The empty body would then just be acting as a T piece.

 

[Deleted member 267285]

Leaving old stuff in like that is asking for trouble imo. If you’re going to convert, do it properly.

 

[ianmcd]

Hardly a big deal to cut out and replace, not a great idea to leave it in

 

[Dave Thornley]

As stated my main worry is the compression fitting on the pipe going into the HW coil. There is little room for manoeuvre to get a spanner in so that the fitting in the tank does not get strained.
Suppose I will have to bite the bullet and give it a go.

 

[Deleted member 267285]

Post a photo if you can, we might be able to give advise on how best to tackle it

 

[Dave Thornley]

Attached is a photo. Now I must have been having one of those moments as I was concerned that trying to undo the fitting at A would be awkward whereas I suppose I could undo it at B and go from there.

 

[Deleted member 267285]

Attached is a photo. Now I must have been having one of those moments as I was concerned that trying to undo the fitting at A would be awkward whereas I suppose I could undo it at B and go from there.View attachment 247688

Sometimes it takes another look to notice something, but yes, either join it in that nut at B using compression, or remove the nut and olive and solder.

 

[Dave Thornley]

Will probably do the latter.

 

[ianmcd]

Will probably do the latter.

It will be a bigger job than that, you wont get the HW zone vave in there when you fit a Tee, you will have to cut back the communal pipe and turn upwards, then Tee in further up, once you have done that the HW zone valve will probably just fit on the same nuts and olive when you remove the 3 port

 

[Dave Thornley]

I am going to do a bit of re-piping as is all a bit of a mess at the moment.