New Radiator getting hot from hot water heating

[Morpheus Cane]

Hi all,
I had a new boiler fitted and while the plumber was here they fitted two new isolation valves in my airing cupboard so I could easily connect a new radiator in the extension I am building.
Well I have fitted the radiator and all seemed fine until I realised that the radiator also gets warm when the hot water is heating up, I have a combi boiler with a unvented hot water tank in the airing cupboard.
I have attached a photo and put arrows to the new valves.
Hope someone can see a issue and if there is a easy fix or if it will cause issues if left. Thanks

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[Morpheus Cane]

Thanks for reply Shaun, so right valve to be moved just need to find out which pipe is the main return to boiler, wish they put nice labels on pipes for people like me

 

[ShaunCorbs]

Thanks for reply Shaun, so right valve to be moved just need to find out which pipe is the main return to boiler, wish they put nice labels on pipes for people like me

your heating/plumber engy should know if he doesnt well theres something wrong 😀

 

[Morpheus Cane]

your heating/plumber engy should know if he doesnt well theres something wrong 😀

lol, he should know but he got it wrong first time so I can't say I have full confidence in his workmanship 🙂

 

[ShaunCorbs]

lol, he should know but he got it wrong first time so I can't say I have full confidence in his workmanship 🙂

easy way get another one if you dont trust him

 

[gassed up]

You could put a non return valve somewhere on the return pipe going to the rad, with the arrow facing towards the isolation valve. That should stop the reverse flow and allow it to work as normal.

 

[Morpheus Cane]

I was wondering the same, I think this may be a easier option than trying to find the correct part of the pipe to tee off from.

 

[Riley]

Bit of a bodge though and check valve will likely stick if your central heating water isn’t the cleanest

 

[plumbfantastic]

There should be 2 motorised valves on the primary flow to the cylinder. One is wired up via a enrgy cutout to prevent the hot water reaching over 85°c

 

[ShaunCorbs]

There should be 2 motorised valves on the primary flow to the cylinder. One is wired up via a enrgy cutout to prevent the hot water reaching over 85°c

Only if a 3 port is used no need when it's a 2 port

 

[plumbfantastic]

G3 states that there should be at least one 2 port connected via the energy cutout including 3 port valves be it flow share or hot water priority

 

[ShaunCorbs]

G3 states that there should be at least one 2 port connected via the energy cutout including 3 port valves be it flow share or hot water priority

Yes that's only for 3 port valves no need when it's an s plan system