ST-292V2 Wireless Thermostat: Optimal Hysteresis Range for Vaillant Stove & 56m2 Heating Area

Hello. I have a ST-292V2 wireless controller. It has a hysteresis range of 0.2-4 degrees. I have gas heating, Vaillant stove to heat about 56m2. I have a problem with choosing the right hysteresis, so that the thermal comfort is economically and comfortably maintained. Do you set a small (0.2) or larger hysteresis? I am asking for help and greetings.

With radiators set higher, for example, + -0.5 degrees. With floor lower. If you have set the boiler, the boiler turns on and off very often, which is unfavorable for it.

radiators have plates

For the radiator system, something about +/- 0.5 to +/- 1.0.
There is nothing too low because the boiler will be clocked. A little bigger will allow him to work longer, but with this size you can turn off faster (boiler thermostat) anyway. There is also nothing to set too much, because the temperature fluctuation will be noticeable.
Of course, the heads on the radiators open to full or not removed at all.

I have an oversized boiler, it will turn off the boiler faster like a room controller with a large difference between switching on and switching off about 1 st. Probably shutting down the boiler three times before it reaches the set room temperature or is it supposed to be?

This is to reduce the temperature on the boiler or use the weather sensor and experiment with the curves.

Do you really want to reduce the temperature on the boiler, or rather increase, because the heaters I have selected at 75st. Power.

It's probably at -20 degrees outside, teaz is 0 degrees, so you can boldly diminish the temp.
It is like you would drive around the city from lights to lights 100km / h - sharp starting and braking, and the one who is driving 40km / h is next to you at the traffic lights, only commutes later as you wait anyway. Theoretically, there is such a speed, while the slower one will not stop at all, because if he travels slowly he will get to the next lights and he will be "green".
Who do you think will consume more fuel and brakes?

You are right Mrs. Andrzej, only at low temper. on the stove I will have more boiler starts + burner block before it reaches the set room temperature. Will it not affect gas consumption? Currently, I have set the temp 58st., Hysteresis 0.4, the stove starts 4 times (clocks) before it is turned off by the room controller.

In practice, it proposes to check the consumption of gas at two different temperature settings, eg during the day, two consecutive similar "temperature" days.

ewjp wrote:

I have an oversized boiler

What is this boiler, maybe it has a maximum power limit, and the temperature should be set to the design temperature. Hysteresis approx. 1 degree if it is possible to control the pump run-out time, then you should experiment with these settings.
If, on the other hand, it is not possible to limit the power, the setting of a higher flow temperature will still be more economically advantageous in spite of everything.
And Mr. Andrzej probably had power in mind.
The installation location of the room thermostat is also very important, remembering that in the room where it is installed there can not be thermostatic heads on the valves.

hello p.hemicznyali boiler is Vaillant Atmotec Pro Vuw 200-3 MH with an open combustion chamber I have limited power to a minimum of 8kw but it is too big to my surface (55m2) temp set to 60st. I do not know if it's good ? pump overrun 3 min, burner lock at 60st.6 minutes or the computational temperature is the one for which the radiators were selected

With this surface, about 6kW should be enough, it is not so bad when the outside temperature is around -25 degrees worse when it is around 0.
How old is this boiler?
You could figure something out, but unfortunately in this forum such advice is not welcome so I will stop.
I will look for documentation if I find something to this appeal.

hemicznyali wrote:

With this surface, about 6kW should be enough, it is not so bad when the outside temperature is around -25 degrees worse when it is around 0.
How old is this boiler?
You could figure something out, but unfortunately in this forum such advice is not welcome so I will stop.
I will look for documentation if I find something to this appeal.

the boiler uses the 2nd season thanks to something e-mail please