Not happy with with new unvented system, although it works fine. Shower pressure issue

[kash]

Correct me if I'm wrong but is he suggesting piping the cold feed to unvented cylinder from these proposed new storage tanks in the loft?

Yes i believe so....?

 

[SJB060685]

Then that wont be mains pressure anymore.

 

[ShaunCorbs]

Then that wont be mains pressure anymore.

with a single imp shower pump

 

[SJB060685]

Ah I misread that. So he's intending to use a shower pump to boost HW supply to house? Strange

 

[kash]

Ah I misread that. So he's intending to use a shower pump to boost HW supply to house? Strange

I think this is how it was set up before (from the previous owner) i had the new tank installed. Any time the hot water was running, the pump used to kick in.

Even if it’s strange, it will work right?

Alternatively he may have meant that hot and cold for the showers will be then pumped, but everting else will be mains pressure.

I’ll ask him to draw up a little diagram too just so that I have it for my own future reference.

Also, if those pumps are not suitable, which ones would be? These are the pumps that were there before and they seemed to work pretty well, except for the noise element. I can live with the noise over flow/pressure though.

 

[SJB060685]

You'd have to ask Shaun or someone else who does plumbing work daily with regards to what pump is suitable for what you're suggesting because I honestly don't know. If your plumber is intending on keeping your unvented cylinder mains pressure and using tanks in loft for showers then he would also be installing a dedicated vented cylinder for the shower hot water, more money and parts and another zone for your CH system, unless it was direct heated through an immersion heater.

 

[ShaunCorbs]

SCALA2

SCALA2 is an integrated, self-priming, compact water booster pump. It is designed for perfect pressure inside the home. It’s quiet, easy to install, and maintains consistent pressure in all taps at all times.

uk.grundfos.com

ESYBOX MINI 3 | DAB Pumps

Esybox Mini 3 has a different appearance than any other booster set and is small and completely integrated. Once you install and use it, you realize that the real difference is in the comfort and performance. Esybox Mini 3 uses the most advanced DAB technologies to create constant pressure...

www.dabpumps.com

thats rated for constant use

 

[kash]

SCALA2

SCALA2 is an integrated, self-priming, compact water booster pump. It is designed for perfect pressure inside the home. It’s quiet, easy to install, and maintains consistent pressure in all taps at all times.

uk.grundfos.com

ESYBOX MINI 3 | DAB Pumps

Esybox Mini 3 has a different appearance than any other booster set and is small and completely integrated. Once you install and use it, you realize that the real difference is in the comfort and performance. Esybox Mini 3 uses the most advanced DAB technologies to create constant pressure...

www.dabpumps.com

thats rated for constant use

Thanks buddy

I’ll double check the other pump that I have to see what type of pump it is. If it is just a normal shower pump would it be the end of the world as a temp solution, given the cost factor?

 

[Chuck]

Seems like a bit of a Heath Robinson solution to me. Is upgrading the supply pipe to something correctly sized out of the question?

 

[kash]

Seems like a bit of a Heath Robinson solution to me. Is upgrading the supply pipe to something correctly sized out of the question?

Unfortunately yes. All refurbishment is now complete. As I had moved out the property, the problem was not something discovered until we moved back in.

On initial inspection all seemed ok as it was just viewed with one shower / tap running. It was only in the ‘real world’ it became an an issue.

It’s going to have to be a similar solution to what’s listed above at this point.
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I've quickly drawn up 3 versions of what the set up could/would be to confirm my understanding. I think it's the 1st one (su1) based on what he wrote, but drawn up another 2 set ups. I've asked him to confirm or correct....