Seems it does have to go next to the cylinder after all, otherwise it blocks the cold feed to the boilder. I had a look and theres just about enough pipe before the cold feed T's into the return. Thanks for your help.
Thanks for your reply.
I did come across that webpage, and it does show the valve nearer to the cylinder, but do you think it woud matter being next to the boiler? I can't see it would make any difference, as it's still stopping the convection flow.
Hi, wondering if anyone can help me. We have a semi-gravity heating system (ie the CH is pumped, but the DHW is just gravity fed) and i'm looking at upgrading so we have some control over the cylinder water temperature. Typically the water is far too hot and you have to add large amounts of cold, wh...