[OpenTRV-interest] First impressions and questions

[Chris Skerry]

Marko,

Sorry but you are wrong.

I have bedrooms that I don’t use set to 12 degrees, due to heat gain from adjacent rooms they end up at about 17.  Adjacent bedrooms are heated (at going to bed times) to say 21 degrees.  No problem.    

I believe it is the air movement (cold breeze) that sets the TRV temperature to 5 degrees for 30 minutes.  Note that the TRV display says ‘Window 5 deg’.    

Well Damon should install Evohome and Danfoss LivingEco to assist in competitive analysis.

My £10 says he will find Evohome better!

Regards,……………Chris
 
On 27 Jan 2017, at 19:52, Marko Cosic <marko at coheat.co.uk> wrote:
> 
> On 27 January 2017 at 19:23, Chris Skerry <angela.skerry at gmail.com <mailto:angela.skerry at gmail.com>> wrote:
> I notice it kicking in winter time when the front door is opened for a period of time to load stuff from the car boot into the house.  Another occasion is in the bathroom when I open the window to get rid of the fug that is clouding the mirror.  the cold air causes it to display ‘window’ and set to 5 degrees, for 30 minutes.
> 
> IME if you start doing any 'zoning' with the EvoHome system, driving temperature differences of say 21C in a room and 17C in the hall next to it, then this feature will also kill the heat every time you open the door to that room.
> 
> Fine if all the rooms are set to all the same temperature but this rather defeats the purpose of the exercise!
> 
> The self learning features also get as royally confused by door open/door close, weather comped flow temperatures, and incidental gains as you'd expect.
> 
> 
> I recommend you buy an Evohome system and install it in your house.  You will then understand what you are up against.
> 
> I'd use the Danfoss LivingEco stuff as 'the benchmark' myself but yes!
> 
> 
> Also these where mounted at high level:
> 
> http://www.ebay.co.uk/itm/152362511225 <http://www.ebay.co.uk/itm/152362511225>
> 
> http://www.ebay.co.uk/itm/013G3001-Ventilunterteil-Danfoss-RA-UN-10-3-8-Eck-Ventil-/231595409377 <http://www.ebay.co.uk/itm/013G3001-Ventilunterteil-Danfoss-RA-UN-10-3-8-Eck-Ventil-/231595409377>
> 
> (there'll be a set going into my place and getting instrumented in due course)
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