High pressure hot tanks

[aberdeeneuan]

Morning all,

We're in the process of sorting out a new boiler and hot tank for the house. The boiler is all agreed, but we want to fit a high pressure hot system to the house as well, looking at an OSO system. Now, the plumber has made noises about the mains pressure and that he may need to pump it into the system, but I didn;t think you could do that now?

Having heard some of the stories on here about pumps I'm keen to avoid that route, so what's the guideline? And how can I actually check the mains pressure? The taps are all ancient and knackered and all give varying pressure as a result.

[aberdeeneuan]

That's an interesting option, fed it from a cold tank - I'd rather do that than pump it!

Anyone else done it that way?

[aberdeeneuan]

Arthur Jackson said:

aberdeeneuan said:

.....looking at an OSO system.

If OSO still use the air bubble in their cylinders I would look elsewhere. Particularly if your water comes from underground reservoirs.

what's the issue with the air bubble? I guess air in a high pressure tank isn't that clever.

[aberdeeneuan]

Ah, that would be a bit of a nightmare. It's the new Super S series, but I can't work out if it's got the air bubble or not.

Is it an issue if it's pumped?