"simon beer" wrote in message
...

"IMM" wrote in message

If you do decide to stick with a vented HW system, and it certainly
does have a number of advantages,

What are they, in brief?

Consider a heat bank. Mains water pressure at the taps, so high
pressures
showers and no pump, but no high pressure cylinders. Can be DIYed.
For an explanatioin:
http://www.heatweb.com

then it is worth changing the
cylinder for a fast recovery type to improve HW reheat performance
while you are at it.

Can fast recovery cylinder only be fitted with a heat bank, not read about
them yet. Or do they work just in cojuntion with the boiler. Any links,
names or idea of prices on the fast recovery cylinder

Heat banks can be heated direct or indirect.

A fast recovery cylinder can be open vented or to a limited degree in
unvented cylinders, the Megaflow type.

http://www.abion-online.co.uk for an explanation of fast recovery cylinders.
using a fast recovery cylinder you can downsize the cylinder, or fit one in
the same size effectively increase the size. Travis Perkins do the Telford
Typhoon at 80 litres (fine for a one bathroom house) for £99 inc VAT and 125
litre version. Best to have the heating cut out cylinder stat fitted and
set to 64C whe using these cylinders.





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