RE: Re: OT Combi Boilers

[Richard Chilton <richard.chilton@xxxxxxx>]

There are combi boilers out there that have a preheat facility, which
minimizes this time lag problem. We keep ours set to preheat and it works
quite well, with no real noticable lag from when we had a hot water
cylinder. I guess the lag also depends on the power output too.

We live in a hard water area, and were advised to use a water softener with
the combi. As it happens, we were already getting a softner, so I didn't
dig
into the technical details of what would happen to the boiler if we didn't.

Cheers,

Rich.

> -----Original Message-----
> From: Paul Gordon [mailto:paul_gordon@xxxxxxx]
> Sent: 24 June 2003 22:23
> To: ukha_d@xxxxxxx
> Subject: RE: [ukha_d] Re: OT Combi Boilers
>
>
> I recently changed to a combi boiler from having both a hot
> and cold storage
> tank, and I'm largely pleased with the space I've recovered,
> however, it is
> not entirely rosy in the garden...
>
> One downside (the only one I've found so far...) is that
> because hot water
> has to be created on demand, it definately takes longer for
> hot water to
> start coming out of the tap than before... - and the further
> the away the
> tap is from the boiler, the longer it takes... -= this means
> that in our
> house it takes what seems like an interminably long time
> (it's actually
> probably only about 30 seconds) to get piping hot water
> running out of the
> bathroom taps (furthest away).
>
> Paul G.
>
>
>
> >From: "Brian G. Reynolds"
<brian.g.reynolds@xxxxxxx>
> >Reply-To: ukha_d@xxxxxxx
> >To: <ukha_d@xxxxxxx>
> >Subject: RE: [ukha_d] Re: OT Combi Boilers
> >Date: Mon, 23 Jun 2003 23:26:41 +0100
> >
> >Thanks Neil, that makes me a very happy bunny!
> >
> >the reason is, my current boiler and hot water tank are in
> the kitchen
> >and
> >there are 2 cold water tanks in the roof of the bathroom.
> >
> >I will soon have finished my big workshop and will then attack the
> >bathroom, but my plans do not want the cold water tanks in
> the roof still,
> >so that is why I am happy!
> >
> >B.
> >
> >-----Original Message-----
> >From: neil_goldsmith [mailto:ngoldsmi@xxxxxxx]
> >Sent: 23 June 2003 22:10
> >To: ukha_d@xxxxxxx
> >Subject: [ukha_d] Re: OT Combi Boilers
> >
> >
> >--- In ukha_d@xxxxxxx, "Brian G. Reynolds"
> ><brian.g.reynolds@n...> wrote:
> > > Just a quickie.....
> > >
> > > Do you still need a cold water tank for a combi-boiler?
> >
> >No ... no tanks .. mains cold in- hot water out .... the heating
> >circuit is pressurised by the mains pressure via the filling
> loop then
> >held by a small pressure vessel within the boiler case hence the
> >warning labels about not operating at less than ~1 bar. .... Neil
> >
> > >
> > > As I understand it a combi does not use a hot water storage
> >cylinder as it is instant (ish) hot on demand so not sure
> about a cold
> >tank.
> > >
> > > Also does the radiator central heating also require a cold
water
> >tank when connected to a combi?
> > >
> > > Thanks,
> > >
> > > B.
> >
> >
> >** UKHA2004 BE THERE! ** - start planning now.
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