RE: [OT] Thermal Stores for hot water/heating

["Paul Gale" <groups2@xxxxxxxxxxxxxxxx>]

I'd be interested too - will be talking to my plumber shortly although
we have a pressurised hot water system planned for DHW (and all cold off of
mains rather than the current two huge tanks). Heating system will be
straight from the boiler currently - will ask about this system.

Paul.



> -----Original Message-----
> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf
> Of Jonathan Shaw
> Sent: 29 May 2007 22:28
> To: ukha_d@xxxxxxx
> Subject: [ukha_d] [OT] Thermal Stores for hot water/heating
>
> I read a lot about hot water cylinders before talking to plumbers and
> decided that with underfloor heating + radiators & a condensing
> boiler that a thermal store was the best option as theory is that
> even when heating the house (rather than water) the themal mass of
> the heatstore gives the boiler something to work on and
> prevents/reduces boiler cycling/ inefficiency associated with
> condensing boilers and zoned heating whre only one room may be
> calling for heat.
>
> None of the (getting on for 10) plumbers I have spoken to think this
> is a good idea.  All generally vague reasons that seem to centre
> on "I fit what I know" rather than listening to customer; oh
and the
> annual service for the pressure relief valves needed for unvented
> cylinders, nice litle earner.  One suggested in hardwater areas the
> heat exchanger would calcify, but Googling doesn't seem to back this
> up.  Naturally eh suppliers (Chelmerheating, Nu-heat, Gledhill) all
> deny this is a problem.
>
> Are there any heating engineers on the list that can offer advice?
> Or anyone with a thermal store in a hardwater area?
>
> TIA
> Jon
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