<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">When i get a bit further how do we get one of those?<div><br></div><div>/bo</div><div><br><div><div>Den 02/04/2013 kl. 16.17 skrev Stuart Poulton:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Paul,<div><br></div><div>Something like these for mounting on the wall ?</div><div><br></div><div><a href="https://dl.dropbox.com/u/6014682/TempQube/IMG_0361.JPG">https://dl.dropbox.com/u/6014682/TempQube/IMG_0361.JPG</a></div><div><br></div><div>Stuart</div><div><br><div><div>On 2 Apr 2013, at 15:13, Paul Smith wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div dir="ltr">Hi,<div><br></div><div style="">I'm thinking occupancy detection is one step to far. A basic schedule would do. such that a room is active during certain times of the day. I think a stat in each room makes sense. I can put ds1820s in just need a nice looking box for SWBO approval. I already have some in the airing cupboard.</div>
<div style=""><br></div><div style="">If the TRV contained a stat and had a way of reporting back its target and current state that would be useful. For me i dont see a need for local control, i'm happy to do that from a webpage or app.</div>
<div style=""><br></div><div style="">I do like the idea mentioned earlier about diverting boiler heat into DHW when the cycle is finished. I can see how i would do that just means a bit of rewiring.</div><div style=""><br></div>
<div style="">
DHW is sorted for me.<br></div><div style=""><br></div><div style="">Regards</div><div style=""><br></div><div style="">Paul</div><div style=""><br></div><div style=""><br></div><div style=""><br></div></div><div class="gmail_extra"><br clear="all">
<div>Paul Smith<br><br>Your Local Computer Specialist, Supporting Your Business When You Need It Most<br><br>We also now do Portable Appliance Testing, if you would like to know more please drop us a line.<br><br>Tel:- 0845 009 6226 <br>
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<br><br><div class="gmail_quote">On 2 April 2013 15:00, Damon Hart-Davis <span dir="ltr"><<a href="mailto:dhd@exnet.com" target="_blank">dhd@exnet.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi,<br>
<br>
Would you by preference:<br>
<br>
a) replace those existing room stats with (sat) DS18B20s (and maybe occupancy sensors) talking via radio to the RPi, and have the RPi control the wireless valves directly, or<br>
<br>
b) opt for more autonomy in the valves, eg sending them a new set-point and have them call back for heat if not meeting that set-point which may be adjusted by occopancy, or<br>
<br>
c) something else?<br>
<br>
Note that I'm ignoring DHW for now.<br>
<br>
Rgds<br>
<span class="HOEnZb"><font color="#888888"><br>
Damon<br>
</font></span><div class="HOEnZb"><div class="h5"><br>
<br>
On 2 Apr 2013, at 14:51, Paul Smith wrote:<br>
<br>
> Hi There,<br>
><br>
> Ok my set-up is already somewhat hacked.<br>
><br>
> I have a newish (2 years old) boiler. which now directly controls the pump.<br>
><br>
> The system use to have 2 circuits, one for DHW and one for central heating. There is a stat on the tank that controls a divert valve and this then calls for heat from the boiler. The second divert valve is operated from a room stat which then calls for heat.<br>
><br>
> I have since split the central heating in to two zones. A second wall stat operates this third valve.<br>
><br>
> I have a relay that is software controlled to apply power to the DHW stat. This allows me from a webpage to turn on the hotwater. Or from a script turn it on. It used to be in the summer that we would heat the water with E7 electric.<br>
><br>
> As a feedback loop i also power a relay from the tank stat and a second relay from the pump. This allows me from the webpage to see that DHW is requested and that the Tank is also not up to temp and that the pump is running.<br>
><br>
> I have several DS1820's on the tank so i know how much hot water there is. We heat a small amount each day for washing, and then a larger amount for baths.<br>
><br>
><br>
> The central heating is similar in that I have a time clock powering the two room stats. and again these each also power a relay so i can see which stat is active. I can also bypass one room stat to force more heat into one circuit.<br>
><br>
> This is where we are now. Going forward I would like to be able to control each room individually. What i'm looking for a simple electric TRV which i can override from software, I use XAP messages in the network to control the relays. So if i build a central hub I will be using XAP on the network side of things.<br>
><br>
> So as i see it a RPi plus radio to control each room TRV.<br>
><br>
> Hope this helps.<br>
><br>
> Regards<br>
><br>
> Paul<br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
> Paul Smith<br>
><br>
> Your Local Computer Specialist, Supporting Your Business When You Need It Most<br>
><br>
> We also now do Portable Appliance Testing, if you would like to know more please drop us a line.<br>
><br>
> Tel:- <a href="tel:0845%20009%206226" value="+448450096226">0845 009 6226</a><br>
><br>
> This email and any attachments may be confidential and/or privileged. Everything is intended for use of the addressee only. If you receive this message in error then you must not print it or pass it on to anyone else or use the information it contains. Please inform Phoenix Technology UK of the error by email or by telephoning (+44)(0)845 009 6226. Please then delete all copies from your system.<br>
> If you are not the intended recipient then you must not use the information in the message or attachments or allow anyone else to do so.<br>
><br>
><br>
> On 2 April 2013 14:26, Damon Hart-Davis <<a href="mailto:dhd@exnet.com">dhd@exnet.com</a>> wrote:<br>
> Hi,<br>
><br>
> The existing OpenTRV V0.09 may do what you want, depending on the details of your boiler control.<br>
><br>
> It simply has a toggle between frost/warm/bake modes, a small setback when the room is dark, and the ability to control the local rad with an FHT8V wireless value and optionally a local boiler. The two rads in one room can<br>
><br>
> (I'm currently managing 3 rads in 3 rooms.)<br>
><br>
> Tell me please:<br>
><br>
> * What your boiler is and<br>
> * What thermostat you currently have (is it 2-wire, 240V, which we can control?) and<br>
> * Are any of the rads you want to control in the same room as the thermostat (and with existing TRVs or not)...<br>
><br>
> (Feel free to mail me privately if you wish.)<br>
><br>
> Rgds<br>
><br>
> Damon<br>
><br>
><br>
><br>
> On 2 Apr 2013, at 14:18, Paul Smith wrote:<br>
><br>
> > Hi Guys,<br>
> ><br>
> > So based on the discussion so far what should be my starting point to get basic control over 3 rads in two rooms.<br>
> ><br>
> > Regards<br>
> ><br>
> > Paul<br>
> ><br>
> ><br>
> > Paul Smith<br>
> ><br>
> > Your Local Computer Specialist, Supporting Your Business When You Need It Most<br>
> ><br>
> > We also now do Portable Appliance Testing, if you would like to know more please drop us a line.<br>
> ><br>
> > Tel:- 0845 009 6226<br>
> ><br>
> > This email and any attachments may be confidential and/or privileged. Everything is intended for use of the addressee only. If you receive this message in error then you must not print it or pass it on to anyone else or use the information it contains. Please inform Phoenix Technology UK of the error by email or by telephoning (+44)(0)845 009 6226. Please then delete all copies from your system.<br>
> > If you are not the intended recipient then you must not use the information in the message or attachments or allow anyone else to do so.<br>
> ><br>
> ><br>
> > On 2 April 2013 14:16, Damon Hart-Davis <<a href="mailto:dhd@exnet.com">dhd@exnet.com</a>> wrote:<br>
> > Hi,<br>
> ><br>
> > OpenTRV might never had happened if the FS20 system had incorporated occupancy-based setbacks and the system had had some way to switch to an English localisation. (I didn't really want to make the rest of my family learn German to operate the controls!)<br>
> ><br>
> > Rgds<br>
> ><br>
> > Damon<br>
> ><br>
> ><br>
> > On 2 Apr 2013, at 14:01, Thomas Hood wrote:<br>
> ><br>
> > > On Tue, Apr 2, 2013 at 1:05 PM, I wrote:<br>
> > >> Among the commercial systems that I have looked into only Honeywell<br>
> > >> Evohome and Danfoss Living Connect dare to control the boiler and only<br>
> > >> Honeywell can control a modulating OpenTherm boiler. Reading forums<br>
> > >> related to these systems I didn't get the impression that the software<br>
> > >> in those systems has been well tuned yet.<br>
> > ><br>
> > > And just after sending that I found out from the site to which Damon linked<br>
> > ><br>
> > > <a href="http://www.webinos.org/blog/2013/02/23/home-heating-automation-using-webinos/" target="_blank">http://www.webinos.org/blog/2013/02/23/home-heating-automation-using-webinos/</a><br>
> > ><br>
> > > that the Conrad FS20 system also has a boiler controller component. :)<br>
> > > --<br>
> > > Thomas<br>
> > > _______________________________________________<br>
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> > ><br>
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