Set a minimum control setpoint

[janssmits]

Boiler: Brink Allure B40 version 4.0
Thermostat: Honeywell Chronotherm Modulation Touch
OS: Windows 10
Nodo open therm gateway V2.10 IC16F1847 firmware version 6.

I have air heating by means of a Brink Allure boiler. My boiler is grossly oversized. This causes the following behavior when the house is warmed up: the thermostat sends a low control setpoint (e.g. 26 degrees). The boiler starts to burn, heats up to 36 degrees and then it locks up on temperature (in Dutch: "blokkeren op temperatuur").
Now I'm wondering the following: can I set the gateway so that it doesn't send such low control setpoints and, for example, change any setpoint below 30 degrees into a setpoint of 30 degrees so that my boiler does not block on temperature?
If that's possible, how am I supposed to do that (I'm already elderly and the last thing I programmed was in Basic about thirty years ago).

[hvxl]

There is currently no such feature. Normally the control setpoint is set to something low (6 or 10 degrees) when heating is off. Forcing a minimum setpoint would make that impossible.