Re: multi-zone central heating

[Ake Hedman <akhe@xxxxxxxxxxxxx>]

christopher purves wrote:

>I wasn't having a go :)
>
>I think SmartKontrols product is rather nice - I just imagine its a tad
>expensive for most people on this list **AND** you don't get the fun of
>making it work(after spending weeks trying to get it to work). Perhaps
SK
>could do a Redhat and produce an opensource version :)
>
>C
>
>
>
This is not as stupid as it sounds ( no offense Christopher ;-) ). To
make and sell hardware and give away the software makes a good business
case. Lexel IHC (http://www.abconcept.info/index.html
only English page
I found about it) is a typical case and have free software but many,
many hardware devices.

But we should also remember that a good system for heat control will
save big sums of money so it is probably worth every penny if it do its
job.

/Ake

>
>
>
>----Original Message Follows----
>From: "Neil Ball" <neilball@xxxxxxx>
>Reply-To: ukha_d@xxxxxxx
>To: <ukha_d@xxxxxxx>
>Subject: RE: [ukha_d] multi-zone central heating
>Date: Fri, 21 Jan 2005 14:04:36 -0000
>
>
>The costs is cheaper than SK, but all you're buying the basic hardware
and
>need to develop & implement all of the software strategies yourself
>including all of the testing etc. - not as easy as it sounds unless you
have
>both the mechanical engineering knowledge and programming expertise!
The SK
>system is more like buying a new BMW rather than simply buying in a kit
car
>& building it yourself without the construction details! Then again
I would
>say that as I work for smartkontrols!! ;-)
>
>Neil B.
>
>christopher purves wrote:
> > When I say network it is LonWorks 2-wire network - they seem to
have
> > all
> > kinds of boxes / pci cards for control although as its industrial
its
> > not
> > maplin prices.  They have a starter kit for around £1000 which
> > contains a
> > card, software and a few devices. Again much cheaper than smart
> > controls.
> >
> >
> > Chris
> >
> > ----Original Message Follows----
> > From: Simon Ryley <simon.ryley@xxxxxxx>
> > Reply-To: ukha_d@xxxxxxx
> > To: ukha_d@xxxxxxx
> > Subject: Re: [ukha_d] multi-zone central heating
> > Date: Fri, 21 Jan 2005 13:15:25 +0000
> >
> >
> > Does anyone know of a central heating programmer / controller
with a
> > network interface?  Something I can stick on the LAN, then alter
the
> > settings for via PC or another device?
> >
> > TIA
> >
> > Simon
> >
> > christopher purves wrote:
> >
> >  > This one has a network interafce :)
> >  >
> >  > http://europe.hbc.honeywell.com/products/pdf/en0b0235-ge51r0802.pdf
> >  >
> >  > ----Original Message Follows----
> >  > From: Kevin Hawkins <lists@xxxxxxx>
> >  > Reply-To: ukha_d@xxxxxxx
> >  > To: ukha_d@xxxxxxx
> >  > Subject: Re: [ukha_d] multi-zone central heating
> >  > Date: Fri, 21 Jan 2005 04:13:33 +0000
> >  >
> >  >
> >  > Does anyone know of a reasonable cost 'proportional' valve
in this
> > > format (attach to radiator)  - one where say 0-10V will
provide
> >  linear  > control from closed to open ? Or failing that where
a
> >  timed application  > of a voltage will open a valve a certain
degree
> >  and it will stay there.  >  > Kevin  >  > Neil Ball
wrote:  >  >
> > >These type of actuators are commonly found on underfloor
heating  >
> >  manifolds.  > >They do take a while to open & close
which is not a
> >  problem with UFH due  > to  > >it's relatively slow
thermal
> >  response. Biggest benefit is ease of wiring  > and  >
>low cost
> >  compared to motor-based actuators. If you are thinking of using 
>
> >  >them on radiator TRV valve bodies just make sure you get the
right
> >  torque > >rating as too high a closing force will damage
the soft
> >  valve seats very  > >quickly and stop the valve from
shutting off.
> >  > >  > >Neil B.  > >-----Original Message-----
 > >From: William
> >  Sadler [mailto:ukhad@xxxxxxx]  > >Sent:
Thursday, January
> >  20, 2005 17:43  > >To: ukha_d@xxxxxxx  > >Subject:
Re:
> >  [ukha_d] multi-zone central heating  > >  > >  >
>  > >On the same
> >  theme, has any body used these: Thermo-Hydraulic  >
>Actuators?  > >
> >  > ><http://www.danfoss-randall.co.uk/Site/downloads/VDSAP112.pdf>
>
> >  > > >Which from the online page can be used to replace
thermostatic
> >  > >radiator valve heads and controlled electrically with
230 or 24
> >  > >volts.  > >  > >William.  > >  >
>  > >  > >  > >  >  >  >  >  >
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> > > > > >
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--
---
Ake Hedman (YAP - Yet Another Programmer)
eurosource, Brattbergavägen 17, 820 50 LOS, Sweden
Phone: (46) 657 413430 Cellular: (46) 73 84 84 102
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