Re: Flow switch recommendations

[Tim Hawes <timsyahoo@xxxxxxxxxxxxxx>]

It depends on what flowrate your combi can deliver... They have a
maximum heat output which usually corresponds to a stated temperature
rise at a specific flowrate. Higher flows will result in less
temperature rise, lower flows in a higher temp rise of the water.

One parameter missing from the datasheet is the pressure loss consumed
by having the flow switch in the line - as you're adding a restriction
it will reduce the pressure at the shower head, knowing what that loss
is will help in the decision-making process :-)

HTH somewhat,

Tim.


On Fri, Dec 25, 2009 at 7:58 PM, noel <noel@xxxxxxx> wrote:
> Hi all,
> looking for advice on flow switches, =A0http://tinyurl.com/y9ff6gc
> this one seems to say max flow rate of 20litees/min, surely that's not
en=
ough for a good domestic shower fed from a combi boiler?? Looking to
trigge=
r mirror heat pads when the shower comes on.
>
> Bearing in mind it's Christmas day and I'm posting on here, in my
defence=
I'm now funds approved to start buying for the bathroom!!!
>
> Any advice gratefully accepted,
>
> Thanks
> Noel
>
> Ps happy Christmas all
>
>
>
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