Atag One Controller or similar?

[Jem16]

The sensor will be more accurate
The app goes by the local
Weather station
The sensor can be awkward to mount in a suitable location

Thanks. So the sensor takes the outside weather temperature. Do you then just set up the desired temperature on the room thermostat along with whatever times you want?

 

[Brambles]

Correct

 

[Jem16]

Correct

Thanks. Now to find a suitable position for the sensor.

 

[Brambles]

A North facing wall

 

[Jem16]

A North facing wall

Ok. North East wall may be better and more shaded in my case.

 

[Brambles]

Two obvious points:

Ensure that HW is not controlled by the external sensor - not an issue in winter, but it will be in the summer.

If the sensor is positioned towards the East, ensure that no early morning winter sun reaches the sensor - it will deliver cool CH flow

 

[Jem16]

Two obvious points:

Ensure that HW is not controlled by the external sensor - not an issue in winter, but it will be in the summer.

Will do thanks.

If the sensor is positioned towards the East, ensure that no early morning winter sun reaches the sensor - it will deliver cool CH flow

Picking a very shaded section where the sun never reaches due to evergreen trees. Checked that this morning.

I want to make sure I’m doing the right thing as the installer has said that some people have had issues in similar properties to mine where they can’t get the hearing on due to it being warm outside but not inside.

It’s an old 1938 property with thick stone at the front. Front rooms remain cool as they’re north facing but back rooms can be quite warm, especially on sunny days.

 

[Jem16]

Ok all up and running now and just getting to grips with the various settings.

I'd particularly like some info on the weather compensation part using Atag boilers. Can anyone help on here or should I start a new thread?

 

[Scott_D]

Any pictures?

 

[Jem16]

Any pictures?

Of the boiler you mean?

 

[Scott_D]

Yes. Would be good to see the new display

 

[Jem16]

Yes. Would be good to see the new display

Hope this is ok. Still to lag the pipes as it's in a garage.

 

[Brambles]

From the picture of the boiler display you have posted, the external temperature sensor is not showing as connected. The logo displaying is an internet temperature.

 

[Jem16]

From the picture of the boiler display you have posted, the external temperature sensor is not showing as connected.

The boiler display is showing the house symbol beside the thermometer. According to the manual that means the outside sensor is connected. I’ve seen it connected too.

Are you looking at the display on the Atag One Zone controller? It does appear to show an internet symbol and probably because I selected Weather Compensation as opposed to Room Thermostat from within the controller’s menu. They’ve changed the Atag One controller recently and I can’t find a detailed user menu yet. The new version is called Atag One Zone controller and its menu is slightly different.

So basically I’m trying to figure out how best to use the weather compensation - via boiler’s menu or controller’s menu.

Also what decides when you want heating on? My last boiler used a digital thermostat to control it. So basically I set the time and what temperature I wanted during that time. I can still set up that schedule but how does the weather compensation come into it now?

 

[Brambles]

Ok, you are probably correct - but my ET display does not look like thst

 

[Jem16]

Ok, you are probably correct - but my ET display does not look like thst

That’s the key to the display.

Can anyone help with my questions on best way to use weather compensation?

 

[Brambles]

Boiler control is still via timed thermostatic controller.

Weather compensation (WC) only adjusts the boiler flow temperature - to a set curve -according to the specific recorded outside temperature. So on a hot day outside, if you set the heating on and the room thermostat to 30 degrees, the heating will come on, but with a low flow temperature - as the room then warms up very slowly, the call for heat will be lengthy. Normally after a continuous call for heat of over 40 minutes, WC may be temporarily deactivated.

Does that make sense?

 

[Jem16]

Boiler control is still via timed thermostatic controller.

Ok got that.

Weather compensation (WC) only adjusts the boiler flow temperature - to a set curve -according to the specific recorded outside temperature. So on a hot day outside, if you set the heating on and the room thermostat to 30 degrees, the heating will come on, but with a low flow temperature - as the room then warms up very slowly, the call for heat will be lengthy. Normally after a continuous call for heat of over 40 minutes, WC may be temporarily deactivated.

Ok. So last night outside temperature was around 13 degrees. Thermostat was set to 20 degrees and was around 19.1 degrees. Boiler came on and flow rate seemed to be around 35 degrees or so and radiators warm rather than hot which seems fine. Temperature never really reached 20 degrees but was around 19.5 which is probably near enough.

Does that sound like it’s doing the job?

Does that make sense?

Getting there thanks. Just not sure on best Room Influence setting though. Boiler instructions show a minimum of 0 and maximum of 3 and seems to suggest using 0 so Off. Atag One controller seems to show the same 3 choices.

This is the bit I’m struggling with.

I’d also like confirmation that the Atag One is using the outside sensor and not taking temperature from the Internet. I believe it uses outside sensor if connected but would like to make sure.

 

[Scott_D]

Has the installer gone through any of this with you?

 

[Jem16]

Has the installer gone through any of this with you?

To a certain extent, yes. However I think I'm more up to speed with this than he is to be honest. Plus I like to understand what's going on myself.