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

["ianh1000" <ianh1000@xxxxxxxxx>]

Ah, I would point out that if you buy the PCB from a local merchant=20
it is more like =A3100. I called Gledhill direct and told them I was an=20
electrician working on a customers machine. The technical staff are=20
helpful and will ship to your address and take a credit card payment.=20
They do say they will not talk to the public ;-)




--- In ukha_d@xxxxxxx, Chris Hunter <cjhunter@...> wrote:
>
> That's good news - especially that spares are reasonably=20
priced ...=20=20
> 'think latest models have a measure of self diagnostics - 'wonder=20
if=20=20
> that would have pointed to the failures ??
>=20
> Chris
>=20
>=20
> On 30 May 2007, at 11:11, ianh1000 wrote:
>=20
> > Hi Jon,
> >
> > I have a Gledhill boilermate heat store, it is about 9 years
old=20
now
> > and I live in a hard water area. I have had a few troubles with
it
> > but nothing major. The hard water did kill the Oventrop mixing=20
valve
> > after 6 years (=A370) and both PCB's have failed (=A335) each. I
think
> > they are a better design now than my unit. My unit is a very=20
simple
> > one PCB runs the HW pump for a few seconds every day so that
it=20
does
> > not stick during the summer, the other runs the pump for 5 min=20
after
> > the boiler stops to pull out all the residual heat. both had=20
failed
> > relays but the new boards had better relays fitted.
> >
> > I am very happy with the performance of it, the high pressure hot
> > water has caught a few guests out when they turn the bath taps to
> > shower and the showerhead jumps out of their hands.
> >
> > I have noticed that Gritish Bas have removed a number around
here=20
(
> > all of my local area has these units) and been working on the=20
tank on
> > the front drive. No idea why they would need to do that.
> >
> > I think that generaly plumbers do not understand how they work.
My
> > sister had a plumber out 4 times trying to fix hers, I told him 3
> > times it was the external mixer valve but he knew better, on
the=20
4th
> > visit he changed the valve and the problem was fixed.
> >
> > The design is very simple so I am not sure why they don't like=20
them,
> > perhaps it is the fact that all of the plumbing runs at mains
> > pressure so they need to do a good installation job.
> >
> > Regards
> > Ian
> >
> >
> >
> >
> >
> > --- In ukha_d@xxxxxxx, "Jonathan Shaw"
<semi.jon@> wrote:
> >>
> >> 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=20
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=20
the
> >> heat exchanger would calcify, but Googling doesn't seem to
back
> > this
> >> up.  Naturally eh suppliers (Chelmerheating, Nu-heat,
Gledhill)=20
all
> >> deny this is a problem.
> >>
> >> Are there any heating engineers on the list that can offer=20
advice?
> >> Or anyone with a thermal store in a hardwater area?
> >>
> >> TIA
> >> Jon
> >>
> >
> >
> >
> >
> >
> >
> >
>