ᐅ New Condensing Boiler – Radiator Thermostats

Hello,
Since we previously lived in a rental apartment and had nothing to do with the actual boiler, I have no knowledge in this area.

So, we bought a house in April, and yesterday the old heating system was replaced with a new Buderus system. We had it set to heat the house from 9:00 AM to 11:45 PM with a temperature of about 23°C (73°F), as we have a small child. At night, it should be lowered to 18°C (64°F). Now my question is: what role do the radiator valves play? At the moment, they are set to 4, but the temperature in the living room is only about 21°C (70°F). Do we need to set the valves to 5 to reach the intended 23°C (73°F)? That would seem most logical to me. And should we turn down the valves at night before going to bed (which wouldn’t really be necessary since the boiler already has a night setback and does this automatically)?

Thanks in advance!

PS: All thermostats on the radiators were also replaced, and the hydraulic balancing was done as well.

The heating system regulates the flow temperature using an outdoor sensor.

Neueheizung schrieb:
And should we turn down the thermostats at night before going to sleep?

No, not really. Only set to the ventilation setting ("star") during airing. Otherwise, keep it at a comfortable temperature.

Thank you.

And what about during the day? Should the thermostats be set to 5 so that the intended and preset temperature in the boiler is reached?

Does anyone else have any ideas?

Don’t thermostats regulate the temperature directly? Like setting 3 equals 20°C (68°F), 4 equals 24°C (75°F), and 5 stands for 28°C (82°F) room temperature.

Without an on-site appointment, any assumptions about how things are arranged can only be guesses...