<div dir="ltr"><div>Is the split configuration available as a kit or even assembled?<br><br></div>Mark<br></div><div class="gmail_extra"><br><div class="gmail_quote">On 16 February 2015 at 16:17, 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>
The split configuration does this already.<br>
<br>
The all-in-one unit probably requires some TLC to help work round the issue that you observe: I’m still working on fixing the closest analogue that I have at the moment.<br>
<br>
Rgds<br>
<span class="HOEnZb"><font color="#888888"><br>
Damon<br>
</font></span><div class="HOEnZb"><div class="h5"><br>
> On 16 Feb 2015, at 16:12, Mark Wigmore <<a href="mailto:mawigmore@gmail.com">mawigmore@gmail.com</a>> wrote:<br>
><br>
> Is OpenTRV sufficiently advanced to do this yet?<br>
><br>
> Mark<br>
><br>
> On 16 February 2015 at 16:10, Damon Hart-Davis <<a href="mailto:dhd@exnet.com">dhd@exnet.com</a>> wrote:<br>
> Hi,<br>
><br>
> Note of course that you may have temperature gradients across the room: in one of mine I observe ~2C for example.<br>
><br>
> So have the sensor near you if possible if this is an issue for you!<br>
><br>
> Rgds<br>
><br>
> Damon<br>
><br>
><br>
> > On 16 Feb 2015, at 16:06, Mark Wigmore <<a href="mailto:mawigmore@gmail.com">mawigmore@gmail.com</a>> wrote:<br>
> ><br>
> > Thanks Damon, I was thinking it might be a combination of factors as you suggest.<br>
> ><br>
> > Looks like the best thing would be to have a TRV controlled by a wireless sensor in another part of the room.<br>
> ><br>
> > Cheers,<br>
> ><br>
> > Mark<br>
> ><br>
> > On 16 February 2015 at 15:49, Damon Hart-Davis <<a href="mailto:dhd@exnet.com">dhd@exnet.com</a>> wrote:<br>
> > Hi,<br>
> ><br>
> > It may start closing well before the target temperature to try to minimise fluctuations; I start closing about 1C below the target I have in the OpenTRV control loop.<br>
> ><br>
> > Also it may see some direct radiative heating as I sometimes do on OpenTRV units, and be reacting to that. It’s still something I’m working on handling fully elegantly.<br>
> ><br>
> > There may also be a calibration error of +/- 1C on the temeprature sensor (the one we use are closer than that).<br>
> ><br>
> > In other words, that place may be approaching 20C including direct radiative heat and air rising from the flow/return pipe when the valve closes thinking that it’s hit 21C.<br>
> ><br>
> > Rgds<br>
> ><br>
> > Damon<br>
> ><br>
> > > On 16 Feb 2015, at 14:52, Mark Wigmore <<a href="mailto:mawigmore@gmail.com">mawigmore@gmail.com</a>> wrote:<br>
> > ><br>
> > > Hi,<br>
> > ><br>
> > > Sorry if this is a bit OT, but I thought people in this forum might be the most likely to know the answer.<br>
> > ><br>
> > > I have a Honeywell HR25 programmable thermostat on my bedroom radiator. It is programmed for 21degC in the mornings, but I can hear the valve start closing from about 17.5deg as the room warms up and completely closed by 19deg room temperature. There's a good airgap all round the TRV; 500mm to the bed, 300mm gap under the bed, and 600mm at the end of the bed nearest the TRV. There is a window 240mm above the rad and the curtain stops 170 above.<br>
> > ><br>
> > > Any idea what's going on?<br>
> > ><br>
> > > Regards,<br>
> > ><br>
> > > Mark<br>
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</div></div></blockquote></div><br></div>