RE: Zoned Heating Control

["Paul Gale" <groups2@xxxxxxxxxxxxxxxx>]

Laurence,

Did you meet up with Sensible Heat at the show? I'll be going with one of
t=
heir Honeywell Hometronic systems - it can do most of what you want I
think=
.

Drop Neil Ball a line - he's very helpful (on list here too):

http://www.sensibleheat.com/contact_us.html

Paul.

> -----Original Message-----
> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf
> Of Lehane Kellett
> Sent: 13 April 2007 13:47
> To: ukha_d@xxxxxxx
> Cc: UK_Selfbuild@xxxxxxx
> Subject: Re: [ukha_d] Zoned Heating Control
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> Laurence
> If you still have the opportunity then consider bringing the radiators
> pipes back to central point(s) with manifolds (like those on UFH). You
> can then fit electrically operated valves(24V or 240V) there rather
> than
> on the radiators themselves. I used Danfoss manifolds as you can
> mix/match on ports.
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>  From the control point of view - I think you either pay the money
(and
> get maybe 70%) or adopt the DIY approach. In my case I went down the
> DIY
> route, albeit a few less zones. See
> http://www.honeycottage.eu/HAhome.htm
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> So far I have:
> Central control (xAP Floorplan)
> Boiler control (industrial PLC)
> Zones (sensors are Dallas, will be adding humidity soon for bathrooms)
> Occupancy (using the alarm PIR's)
> Weather compensation (external Dallas and local airfield weather
> report)
> Forward weather compensation on the UFH (looks at BBC weather
forecast)
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> Open window detection and optimum start are to follow, though I doubt
> the efficacy of the latter on a fully zoned system since if one zone
is
> calling for heat then the costs of heating the boiler and pipework are
> significant and adding another zone probably is pennies in a well
> insulated place. Simply changing the overall CH start time based on
> time
> of year and the alarm clock setting seems to work OK.
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> Lehane
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> Laurence Mason wrote:
> >
> > We are building a large well insulated farm house and I would
like to
> > have a practical system for zoning the heating. My dream system
would
> be:
> >
> > Separate zone for each room - we could consider ~20 zones
> > Individual override in each (or some) rooms
> > Central programming panel plus ability to do this via browser
> interface
> > Full seven day programming per zone
> > External temperature compensation
> > Wired system - not wireless - Radio amateur and do not want
> interference
> > either way
> > Unobtrusive valves as we will be fitting column radiators and
want to
> > achieve a look in keeping with them
> > One or two areas of underfloor heating
> > Learns thermal response of room ( we will have log burners in
three
> > rooms so not sure how this would affect the learning - and an aga
in
> the
> > kitchen)
> >
> > Now, we went to the self build / automation show the other week,
> which
> > was very interesting - it is some years since we last went. Still
> > waiting for some of the suppliers to sent us information - I
guess
> they
> > must have a lot to catch up on.
> >
> > Talking to the automation people it appears there are a range of
> > solutions, some of which are very expensive - =A320K buys me a
lot of
> > heating oil!
> >
> > It would appear that the TRV body with the wired remote control
head
> is
> > an economic way to control the flow of water in each of the zones
-
> we
> > could even hide them in a cupboard or bathroom so they are not
seen
> in
> > the main living rooms. It appears the major cost is in the
controller
> or
> > are we missing something? In general we are not looking at
automating
> > the lights or sound so don't want to pay for a system to only use
10%
> of
> > it's power to control the heating - perhaps that is why some of
them
> > appear so expensive? We will want a monitored alarm system so
perhaps
> > that would help to offset the cost? We would cover the wiring and
> > plumbing.
> >
> > So any suggestions on a sensible way forward or do I just fit
normal
> > TRVs in every room and spend a little more on oil each year? The
> house
> > is well insulated but it does seem wasteful to heat the spare
room,
> for
> > example, to a normal temperature profile when we have no guests!
> >
> > Thanks,
> >
> > Laurence
> >
> >
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