"John Rumm" wrote in message
...
HLAH wrote:

Then get a highflow combi. Do a search on this group for Alpha CD50 a
few satisfied users. who will confirm the flowrates. They will a bath as
fast as any storage system and no tanks or cylinders.


Can you run a power shower with that?

Nope, you can't use any form of pumped shower on a what is to all intents
a mains feed.

You can but certian strict conditions. See water company.

A "high flow" combi will only be of any use if you have the mains supply
performance to feed it[1].

Going to the expense of laying in a new feed from the street main will do
nothing to increase the static pressure, but will usually improve the flow
rate (i.e. less dynamic pressure drop). If you only have 1 bar static
pressure then you are never going to get much of a shower from that under
its own steam.

Most power shower pumps only deliver 1 bar.

[1] You can do other complicated expensive stuff using accumulators to
buffer incoming cold water which can give you a temporary boost to
pressure and flow rate, but this is pretty pointless if all it lets you do
is run a expensive combi solution in place of a far simpler storage system
that achieves an equal result for a fraction of the cost. (Of course, for
Dribble a Combi always = "better", but that is just him)

Combi is not always better. In 90% of cases it is. In this case no. If I was
him, I would get the mains seen to as it needs to be irrespective. If it is
not possible to get a good flow, then I would fit an accumulator. You can
make one yourself for a fraction of the price what some people are selling
them as packages. Then I would fit a heat bank to do the boiler and solar.
No pumps. Lots of flow and pressure up to the static mains pressure at all
taps hot and cold. Some packaged accumulators will have pumps to increase
the pressure too, but very expensive.

mains. Have an integrated heat bank running the CH from it. It is the
best solution and gives great scope and flexibility for the future too.

Out of date info. You will get better performance from most modern boilers
if you let them drive the rads directly so that the boiler can sense the
actual heating load and modulate accordingly.

Total tripe, you are playing the know-it-all arsehole again. Well you do
speak out your arse most of the time. Tell the Germans that. Buffered Heat
Banks are way over there. This man has come here for advice, not the
ramblings of a know-it-all amateur whose total experience of heating id
fitting his own combi. Please be quite. You are a total amateur not knowing
much at all. Heat banks provide boiler and CH buffers and provide for solar
too. All in one cylinder.

snip amateur garbage

To the original poster go to one of the forums that the professionals use.
Maxie uses the heating forum on DIYNot.com. Not bad, I had a look. Try that
in future. The forum specialises in heating plumbing so a low noise level of
idiots which permeate this group. Just don't take any notice of the idiot
amateurs on here.