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I am contemplating installing a heat bank type thermal store, with an external plate exchanger for DHW. The pump on the primary (tank) side of the plate exchanger is usually controlled by a flow switch on the DHW side. I am thinking to use a modulating pump (Grunfos apha2) and a thermal...

I will definitely be in touch with building control. I have always had good experiences in the past, and I have found that if your work is neat and correctly done, they are usually very agreeable. I am still unsure if a sealed low pressure (2 bar) store with an external plate exchanger requires...

Thanks, I will try to get a quote from McDonald. How did you find out how big the DHW coil was in the Gledhill? and which model has the 3.7 sq. m. coil? Most of the manufacturers don't seem to list the coil sizes or even the ratings.

Does that mean you can't use a combi in Norwich?

Aside from being overpriced, most commercial thermal stores are not designed to deliver 12lpm of hot water while running at 60C. The DHW coils are too small. There are a few exception like the steel OEG store I linked above, I lived with that one for a few years in my previous house and it...

Typically the coils are too small (1-2 m^2 surface area), even in most commercial thermal stores, which is why people think stores need to run at 80C to work. I plan on running mine at 60C. I also live in Norwich, which has very hard water and I am worried a bit about internal coils scaling as...

Yes, I have read a lot of complaints about them, which is why I am looking for other makes.

In addition to mains pressure hot water, I would like to have heat flowing to the radiators whether the boiler is running or not. My heating loop will use a modulating pump (Grunfos alpha 2) and TRVs all round.

I am looking to install a thermal store to replace my current vented cylinder. I plan to use an external plate exchanger for DHW and heat the store directly from my existing vented boiler. So what I am looking for is a plain stainless steel tank (no internal coils) with a variety of connections...

I have just moved in to a 30s house in Norwich, and plan to install one of these: http://plumbingsupplies24.co.uk/hygienic-buffer-storage-tank-vertical/ It will replace a vented system. I am looking for someone G3 certified to commission the tank, and to provide annual inspection and boiler...

I am moving house and looking to install a thermal store in the new place. I was thinking of an unvented store around 300l, with a single corrugated stainless coil for DHW. Any suggestions on make/model/supplier?

I have learned a lot reading the forum and thought I should contribute back with my recent experience.I bought a 90 square meter 2 story row house with a 22kw gas Vaillant non-combi boiler in the loft that is approximately 12 years old. The water was heated with electric point-of-use heaters in...

Hello, I have a non-combiboiler (Vaillant), non-condensing, non-vented with an integratedexpansion tank, that is used to heat radiators in my house. It ismaybe 10 years old and I am hoping to get a few more years from it.All of my water is heated with electrical point-of-use heaters, whichis...