In article . com,
Niall Smart wrote:
So I can't get rid of tanks in the loft, and if I want a pressurised
(power) shower I'm going to have to use a pump. The two options seem
to be either (a) regular vented / unpressurised system where the pump
is on the appliance side of the DHW cylinder or (b) use a pump to
pressurise an unvented cylinder from a cold water storage tank.

There's a lot of rubbish written about showers. You don't need high
pressure for a decent one - it's the flow that matters. And you don't need
high pressure for that - consider tipping a bucket of water over yourself
where there's no pressure and little head. ;-)

If you're rejigging the system, consider moving the header tank as high as
possible in the roof space and take special care with the pipe runs
avoiding elbows etc - bend the pipe instead. Run separate 22mm feeds from
the tanks to a proper shower designed for low pressure use - Aqualisa make
them. Whilst the extra cost of the pipework will negate the savings of the
pump cost you'll end up with a better and quieter shower.

--
*The early bird gets the worm, but the second mouse gets the cheese *

Dave Plowman London SW
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