Posted by: @editor

Installers don’t like to enable weather compensation because it’s a trial and error system which leads to multiple call outs, so they just set the system to one flow temperature.

My advice is for you to experiment with the heat curves to get it running optimally for your house and your personal comfort levels.

This is why homely is such a great concept. It’s much more than a thermostat, it’s an automatic weather compensation optimiser. It’s a total game changer really.

@squonk

If you would like to provide details of what equipment you have and where it is located in your home, I will try to guide you through making the necessary adjustments.

you need to detail the controls you have 

@alec-morrow Just a basic system, standard Vaillant controller plus a SensoComfort panel. UFH throughout with a thermostat in each room.

Set all on off controls to maximum, and raise the heating curve to something more appropriate say 1.4, they come out if the factory at about 0.6

if the sensocomfort isn’t in a habitable space get it moved there

@alec-morrow I've got the heat curve set to 1.0, was thinking of working down from there rather than up. My thinking was to reduce the flow temps as much as possible whilst keeping the house warm - have I misunderstood how it works? SensoComfort (who thinks up these names??) is in the main area.

@hughf Is Homely relay switching..or does it speak multiple bus languages?

@squonk going up is as good as going down. make sure you have room control set to on, or extended...other wise it will just work around the outdoor temperature (which works very well) as it manages the "cycling" relative to the outdoor temperature and no indoor influence. (weather compensation has been mandated in Germany and other countries since 1985, so it is refined)

Im not sure why adaptive heat curve should be set to off.. I use it all the time and it works!

Posted by: @alec-morrow

@hughf Is Homely relay switching..or does it speak multiple bus languages?

Modbus over 485 - at the moment it's only coded up to support Midea and Samsung (because a certain Mr GH consults for them) but their developers were keen to code up support for the Carel controller that's inside the Cool Energy units. They offered me the option to be their beta tester for this integration.

It will also commission the units (again, over modbus) so there's no need to go into the controller and manually change all those parameters. It will also make a decision on whether to run load comp or weather comp depending on the spot rate for electricity and the demand for heat (geofencing etc). It's a very cool idea - my only complaint is that there's no in-home display or interface, just the app to control the setbacks/schedules for DHW etc.

Posted by: @alec-morrow

@squonk going up is as good as going down. make sure you have room control set to on, or extended...other wise it will just work around the outdoor temperature (which works very well) as it manages the "cycling" relative to the outdoor temperature and no indoor influence. (weather compensation has been mandated in Germany and other countries since 1985, so it is refined)

 

Im not sure why adaptive heat curve should be set to off.. I use it all the time and it works!

This is the Vaillant recommended config:

System

Adaptive heat. curve - No

Configure heat. circ. - Zone1

Hybrid manager - Bivalence point

Heat. bivalence point - 20°

DHW bivalence point - 20°

Energy supplier - Heat off

Auxiliary heater for - Inactive

System diagram configuration

System diagram 10

Additional module

Multi-function.output2 - Circ pump

Aux. heater output - Off

HEATING

Type of circuit - Heating

Max limit outs.temp. - 30°

Heating curve - **Site specific

Minimum temperature - 15°

Maximum temperature - 45°

Auto Off mode - Eco

Room temp. mod. - None

I agree it seems odd not to use Adaptive Heat Curve (assuming it does what it says on the tin) or Room Temp Mod.

Just keep teasing the curve up... you can also just raise the target room temperature, that lifts the curve. With "none"  selected in room control it is a calculated room temperature or virtual room temperature. Heating is a science so outcomes are predictable. actual settings ie running it at 24c and room temp being 22c is fine if you are comfortable..fine tuning can be fun though!

Posted by: @alec-morrow

Just keep teasing the curve up... you can also just raise the target room temperature, that lifts the curve. With "none"  selected in room control it is a calculated room temperature or virtual room temperature. Heating is a science so outcomes are predictable. actual settings ie running it at 24c and room temp being 22c is fine if you are comfortable..fine tuning can be fun though!

 

 

Do you think we will ever see the process automated as standard? 

It often appears the sector hasn't moved forward for decades vs other industries? 

I can't think of another consumer offering so manual? 

Why aren't we seeing more progress in manufacturers controls?