I have a HR triple control thermostatic shower valve supplying shower
and bath taps. My boiler is a combi (ariston eurocombi) with hot water
quantity for 35 degrees celcius of 9.5 l/min.
H&R tec support doesnt see a problem but experienced plumbers I've
since spoken to say the valve needs much more hot water.
I'm kind of resigned to fitting it so I dont really know what IS going
to happen (although I'm kind of expecting the worst)
If I'm going to keep the valve and my combi isnt up to the job I can
buy a new combi - but even high flows are max of 16 l/min and I dont
know if that is enough. Someone suggested vented thermal stores which
I looked into but the price is still really high. I would like to know
if there is some way of fitting a kind of reservoir hot water store to
my present combi to boost the flow but keep price down. Any
ideas/comments would be gratefully appreciated.
Thanks,
G.

On Mon, 08 Aug 2005 09:57:00 -0700, greggathome wrote:

I have a HR triple control thermostatic shower valve supplying shower
and bath taps. My boiler is a combi (ariston eurocombi) with hot water
quantity for 35 degrees celcius of 9.5 l/min.
H&R tec support doesnt see a problem but experienced plumbers I've
since spoken to say the valve needs much more hot water.
I'm kind of resigned to fitting it so I dont really know what IS going
to happen (although I'm kind of expecting the worst)
If I'm going to keep the valve and my combi isnt up to the job I can
buy a new combi - but even high flows are max of 16 l/min and I dont
know if that is enough. Someone suggested vented thermal stores which
I looked into but the price is still really high. I would like to know
if there is some way of fitting a kind of reservoir hot water store to
my present combi to boost the flow but keep price down. Any
ideas/comments would be gratefully appreciated.
Thanks,

I'd give it a go. I think that the worst you may have to do is to fit a
smaller shower head/rose to make more use of the flow.

The shower will be better than electric (by a long way). Of course if you
are going to upgrade the boiler/heating system anyway then there are a
range of options to improve it.


--
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at http://www.diyfaq.org.uk
Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html
Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html

Thanks Ed,
I had a manual mixer shower valve their before and the flow was OK.
Automatic therms just do the same as manual ones only.....
automatically, dont they?
Would only really be looking at upgrading boiler if the flow was really
poor, or (if I can find a nice elusive 'bolt on' to give a little more
umph for little outlay) I'd do it for better performance if I was a bit
disapointed with flow.
Thanks again for the reply,
G

wrote:

I have a HR triple control thermostatic shower valve supplying shower
and bath taps. My boiler is a combi (ariston eurocombi) with hot water
quantity for 35 degrees celcius of 9.5 l/min.
H&R tec support doesnt see a problem but experienced plumbers I've
since spoken to say the valve needs much more hot water.

As long as the valve allows you to control the flow rate of the water as
well as the temperature, then you ought to be fine. You may not be able
to turn it full on and still get it hot enough, but it should be fine at
lower flow rates.

(There are some pressure balanced vavles that are not well suited to
combis because they have no flow rate control (i.e. they are off or full
on). These can result in the level of flow being too high for the water
to get heated enough).

--
Cheers,

John.

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