Viessmann Trouble Slow Heat Up

[Julian Such]

Hello Everyone,
Viessmann Vitodens 200w fitted with weather comp. I have a Tado V1 which says that the room is too cold and is demanding heat. However the boiler is taking two hours to heat the room and running at 29% output. Something does not feel correct, any thoughts?

Julian

 

[doitmyself]

Heating curve not correct?

Does the Tado communicate with the boiler so the heating curve is adjusted when the required room temperature is changed? If it doesn't, the heating curve will only be correct for one specific room temperature.

 

[Gasmk1]

i would check with viessmann as tado might not work properly with them the viessmann's 200's own weather comp is far superior to tado controls

 

[townfanjon]

Is this a new installation ?

 

[999]

The 200 set up correctly with weather comp shouldnt need something like a Tado. How long has the Tado been fitted?

 

[Julian Such]

Is this a new installation ?

Yes, last week completed Friday. My installer is Viessmann Registered but I am interested in solving this. It feels like a heating curve although I am on 2.0 at present.

 

[Julian Such]

The 200 set up correctly with weather comp shouldnt need something like a Tado. How long has the Tado been fitted?

Tado has been fitted for 5 years, Viessman last week. We really like the Geofencing of the Tado. I feel like I have taken two steps back.

 

[999]

If you want to use Tado to its full advantage then you would have to disable the weather comp on the viessmann.

 

[Julian Such]

Hmmm, so the weather comp is better than Tado? and you say I should not turn off the system. if the boiler is on at 2.00am, is that not a waste? I saw that I can change individual days for temp programming. What about HW control with the Viessmann?

 

[999]

Dont set it to be on 24 hours a day that is a bit excessive. Try 6am - 10pm if using the weather comp on its own.
How is the hotwater controllled ?
I take it you are using stored hotwater ?