”Slow start” feature for less thermal stress

Pum

Opening the radiator valve fully with a cold system might cause unnecessary thermal stress on the system (and noise due to thermal expansion). Ramping up the valve for a short time might reduce the stress.

I suggest a feature in line with “early start” called “slow start” to automatically ramp up the opening of the valve for cold systems.

GlemSom

I highly agree with this.

In my case, it's about 30% more expensive to let Tado control the heating - compared to my old Danfoss thermostats.

The Tado devices are way to agressive in trying to reach the desired heat, and there is not way to control that at the moment.

I would much rather it took a few extra minutes to heat a room!

Schippie

Exactly. Extending this, I put in a feature request to control at least the following basic parameters:

• Maximum early start (determining how early heating may start relative to the desired time at which a certain temperature should be reached
• Power profile when heating (determining a slow, normal or fast ramp-up of heating power) and cooling
• Maximum water temperature for heating (so you can maximize at say 60 degrees, preventing overheating at non-tado controlled radiators & pipe noises when adjusting to the high temperature

taco

I would like to be able to reduce the maximum heating power. It will take longer to heat up the house but I expect it to use less gas.

Grobsnelf

I think this suggestion could solve the problem:
https://community.tado.com/en-gb/discussion/7040/maximum-opening-percent-and-time-on-radiator-thermostate

gary333

With regards to water temperature it’s worth checking if the boiler can override Tado as an interim measure.

For example my boiler (Vaillant 938) won’t allow Tado to exceed the temperature set for the central heating within its own settings. I’ve got mine set to 60oC and then when Tado requests 75oC the boiler will only output up to 60oC

Schippie

Sadly, @gary333 my boiler dates from a time where the manufacturer moved all parametrisation to a same-brand thermostat. So nothing I can adapt outside of tado at all. Which is why I am happy tado are thinking of offering more control to end users.

Pum

I suppose that the issue in this thread could be lifted to a higher level and taken care with the general overhaul of the control strategy that @Jurian mentions in thread posted by @Grobsnelf?