[OpenTRV-dev] Radiator controls

[Bruno Girin]

What does DD1 have in terms of controls?


On 26 December 2013 18:04, Bo Herrmannsen <EMAIL ADDRESS HIDDEN> wrote:

> oh....hmm... thinking
>
> what i think is maybe a combo of DD1 to make them variable... and then
> OpenTVR ?
>
> makes any sense?
>
>
> Den 26/12/2013 kl. 18.17 skrev 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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