[OpenTRV-interest] First impressions and questions

[Jason Pearce]

Hi,

I'll let you know how it performs in a few days - installed it today -
remind me if you don't hear from me !

Regards,
Jason

On Wed, 25 Jan 2017 at 8:17 pm, Simon Hobson <linux at thehobsons.co.uk> wrote:

> Jason Pearce <jason at pearce.org.uk> wrote:
>
>
>
> > I wasn't explicit enough - remote sensor - something like a stats hub
> being used wirelessly in sensor mode to send data to a (or more than one)
> local trvs in a room - stats hub at a convenient height/location - the box
> you sent with my stats hub is discreet enough - the trv in my bedroom was
> measuring around 22 celcius - it wasn't actually that hot in the room, so
> the trv sensor is being affected by the radiator.
>
>
>
> Sounds simple enough :-)
>
> Comes back to 2-way communications again, and the security & battery life
> issues that go with it.
>
>
>
> I do recall there's been a small amount of discussion about that here in
> the past - might be worth searching the archives and see what's been said
> before.
>
>
>
>
>
> I have a question for you on how the unit is performing.
>
> I assume you have the one unit, and it's not currently connected to a
> boiler controller. Is it doing "sensible" things when there's a call for
> heating in the room, but the boiler isn't running ? I can't help wondering
> if it might be winding the valve fully open, saturating any integral term
> in the control algorithm, and perhaps then overheating the room when the
> boiler does fire up (due to timer & room stat calling for heat).
>
> There's also issues with combi boilers (spit) which go off (as far as the
> heating is concerned) while people are having showers so even with a full
> Radbot system and boiler interface, there'll still be "demand but no heat
> supply" situations.
>
>
>
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