<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">oh....hmm... thinking <div><br></div><div>what i think is maybe a combo of DD1 to make them variable... and then OpenTVR ?</div><div><br></div><div>makes any sense?</div><div><br></div><div><br><div><div>Den 26/12/2013 kl. 18.17 skrev Bruno Girin:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div dir="ltr"><div>Bo,<br><br>Yes, they are electrical as I say in my post, which is exactly why I posted them: because of that, they can all be controlled individually which is what we want to do with OpenTRV. So I thought that getting inspiration from electrical radiators in terms of control could be a good way to make our own controls intuitive.<br>
<br></div>Bruno<br><br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On 25 December 2013 13:35, Bo Herrmannsen <span dir="ltr"><<a href="mailto:bo.herrmannsen@gmail.com" target="_blank">bo.herrmannsen@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">hmm<br>
<br>
are these rads not electrical? just looked like so as they did not seem to have any pipes going to them?<br>
<br>
<br>
Den 25/12/2013 kl. 12.18 skrev Bruno Girin:<br>
<div><div class="h5"><br>
> Hi all,<br>
><br>
> Following a discussion that Damon and I were having on Sunday while installing a boiler control at my place and quaffing fizz, I've taken pictures of the radiator controls at my mum's (see attached): she has electric radiators each with individual controls so in practice it provides soft zoning as we want to do. The controls are slightly different depending on the radiator but they are all roughly the same:<br>
><br>
> - A slider / wheel with 4 settings:<br>
> 1. Auto / prog: controlled by external programmer,<br>
> 2. Comfort: warm setting for rooms that need a higher temperature,<br>
> 3. Eco: slightly cooler,<br>
> 4. Anti-freeze: keep the room at ~5°C to prevent freezing;<br>
><br>
> - A numbered wheel a bit like mechanical TRVs that allow fine adjustment of the temperature.<br>
><br>
><br>
> So for OpenTRV, we could have something like this:<br>
> - A base temperature set by programming (with a sensible default),<br>
> - 4 modes:<br>
> 1. Anti-freeze: fixed temp ~5°C<br>
> 2. Eco: target temp = base temp<br>
> 3. Comfort: target temp = base temp + 3/4°C<br>
> 4. Boost: eco/comfort temp + 3/4°C for a limited amount of time<br>
><br>
> Then changing settings could be done 2 ways:<br>
> Option 1: like today the 1/2/3 flash with a single Mode button,<br>
> Option 2: a slider switch for Eco/Comfort + "heat on/off" button: when on "heat off" use setting 1, when on "heat on" use the Eco or Comfort mode depending on the other switch.<br>
><br>
> The idea of option 2 is that you can set the eco/comfort switch room by room and leave it there; then you just have to set heat on or off.<br>
><br>
> Finally have a the "learn" button that learns when you set heat on or off by updating an internal "program"; and the "boost" button that sets mode 4 for a limited amount of time.<br>
><br>
> In terms of placement, you could have the eco/comfort switch slightly out of the way because you'd hardly ever use it and then the 3 other buttons on the front plate with 2 small buttons for "heat on/off" and "learn" and a Big Red Button for "boost".<br>
><br>
> Of course, this would be a future release :-)<br>
><br>
> If we ever add an optional base station, you could have each TRV store its own program, the central station store a copy of all programs and the two sync whenever any program is changed either at the base station or at the TRV through "heat on/off" and "learn". That way, each TRV can still operate on its own but also be programmed centrally.<br>
><br>
> Thoughts?<br>
><br>
> Bruno<br>
><br>
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