Thermal store - very low hot water pressure. Help/ideas

[S2Smith]

Very low (trickle) hot water pressure at outlets. Albion mainsflow indirect cylinder. Help and ideas please!

 

[moonlight]

I have had one similar issue. Had been heated by solar, coil scaled up inside. I disconnected mixing valve, added an elbow and a length of copper to the top section of the coil and kept pouring in a strong lime scale remover. It was so bad it took me several hours. I did plug the bottom for a while to give it chance to eat away the scale. The only other option new cylinder.
One question though did you try just adjusting the valve to only have cold through? if you have full flow cold through, there is your answer.

good luck.

 

[S2Smith]

I haven't as yet tried that...what will this determine?

 

[S2Smith]

I have had one similar issue. Had been heated by solar, coil scaled up inside. I disconnected mixing valve, added an elbow and a length of copper to the top section of the coil and kept pouring in a strong lime scale remover. It was so bad it took me several hours. I did plug the bottom for a while to give it chance to eat away the scale. The only other option new cylinder.
One question though did you try just adjusting the valve to only have cold through? if you have full flow cold through, there is your answer.

good luck.

 

[ShaunCorbs]

Get someone who is g3 qualified out eg unvented they should know what there doing

 

[townfanjon]

Thermal store or unvented????

 

[S2Smith]

Thermal store

 

[moonlight]

Get someone who is g3 qualified out eg unvented they should know what there doing

Don't need G3 for thermal store.

 

[ShaunCorbs]

Don't need G3 for thermal store.

No but I wouldn’t suggest messing with something the op doesn’t know / fully understand

 

[Welder]

No but I wouldn’t suggest messing with something the op doesn’t know / fully understand

Far better to practise 'safe extraction' these days...