[OpenTRV-dev] Radiator controls

[Bruno Girin]

Bo,

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.

Bruno



On 25 December 2013 13:35, Bo Herrmannsen <EMAIL ADDRESS HIDDEN> wrote:

> hmm
>
> are these rads not electrical? just looked like so as they did not seem to
> have any pipes going to them?
>
>
> Den 25/12/2013 kl. 12.18 skrev Bruno Girin:
>
> > Hi all,
> >
> > 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:
> >
> > - A slider / wheel with 4 settings:
> > 1. Auto / prog: controlled by external programmer,
> > 2. Comfort: warm setting for rooms that need a higher temperature,
> > 3. Eco: slightly cooler,
> > 4. Anti-freeze: keep the room at ~5°C to prevent freezing;
> >
> > - A numbered wheel a bit like mechanical TRVs that allow fine adjustment
> of the temperature.
> >
> >
> > So for OpenTRV, we could have something like this:
> > - A base temperature set by programming (with a sensible default),
> > - 4 modes:
> > 1. Anti-freeze: fixed temp ~5°C
> > 2. Eco: target temp = base temp
> > 3. Comfort: target temp = base temp + 3/4°C
> > 4. Boost: eco/comfort temp + 3/4°C for a limited amount of time
> >
> > Then changing settings could be done 2 ways:
> > Option 1: like today the 1/2/3 flash with a single Mode button,
> > 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.
> >
> > 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.
> >
> > 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.
> >
> > 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".
> >
> > Of course, this would be a future release :-)
> >
> > 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.
> >
> > Thoughts?
> >
> > Bruno
> >
> >
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