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sorry I must be thick or something because i cannot work these stuped forums. I just want to post a pic but it wont let me. looking in help dosnt tell me the basics I have a content space but no button to add content!!!!! i have exceeded my attachment disc space appartently but how do you...

no i keep getting error msg Cant do it? tried resizing it, tried a bitmap file ext all no good..... :facepalm: Dont understand, i posted oic before!!!! If I have exceeded allotted space for attachments how do I REMOVE THEM?

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I believe there is a mixing valve at the UFH manifold. Limited to 45deg max. Struggling to post pic of jct box. File to large I think!

Electrician came round today. Rewired the junction box! I now have CH switching valve to Mid position and UFH by default when CH not on. I've tried different combos of switching UFH on and then CH, then switching it off again to check the valve operates. It seems to work ok but only occasionally...

Guys I would like to thank you all for your time and opinions, I started the thread as a concussed home owner being bambusled by his builder. I now have the second opinion I needed and almost enough knowledge to sort this myself. But as the last posts suggests, I have already paid a lot of money...

Ok then, this seems quite simple to me! All I need is a signal from CH via from the stat via the programmer to the white valve wire or both white and grey. That will get the valve to the CH only or BOTH position when CH is finished sending signal valve should revert to W only. UFH stat just...

This is the airing cupboard with what I think is what!, plenty of space for a S plan I supose!

Special location, Thanks for your very clear description of how the 3port valve actually works. It's answered a lot of my missing knowledge. With what I have already working I should be able to work out which colours are at least signal wires. Looking at my diagram I think I'm nearly there...

There's the thing, how do I alter the wiring to suit the three port valve I have. Instead of re plumbing and purchase of two port valves I don't have! And is my builder going to cover the cost, since I still don't have a system that works?

So, I gather from responses that a Y plan was always going to be difficult. And two port isolator to make s plan is what's called for unless you use complicated relays? This will mean more plumbing to remove the 3 port and add at least one two port. Or can I just use the 3 port as a 2? If I...

We do have two stats. One in the extension controlling the UFH set to always on. And one in the hall for the CH which operates the CH programme. Both successfully trigger the boiler but not the position of the 3 port valve! I would be happy to get flow to both or just UFH as when the UFH is on I...

I think we have three programmers in this system now!!! One in the UFH which is set to perm on. One as part of the boiler, installed at builders insistence to give an extra tap or something . And a new room stat/ prog installed so the boiler can stay on? I have no idea if any of them are 2 Chanel ??

The boiler is a Worcester bosh with the optional programmer(not used) The room stat/programmer is in named but I have the instructions , they say it's a BYC 07HE PRIG TOUCH SCREEN STAT. The UFH is by heatmiser UH2. The junction box is originally from the gravity fed system installed from new...

This is how its set up now!

Oh, nicely hidden

How do i post pictures from my computer? I hope this works. this is a graphic ive done to simplify the arrangement based on my limited knowlege as you can see there are some question marks!!

Can I post Pics yet Mr Admin man.....?

Im lead to believe the UFH cycles water with it own pump. a thermostate set to max 45 deg allows CH water to enter the cycle if needed, so UFH never exceeds 45 deg and CH is only called for if room temp drops. I think there is a pressure relief between the flow and return should the boiler be...

Thanks for the kind offer, but Ive paid someone a lot of money and there going to fix it. Im just doing my research so I can get them to do what ive paid for. failing that I'll be in the market for a good engineer soon....