Just a heads- up that I successfully integrated my MZC Musa (Maestro equipped) pellet stove in Openhab
It’s possible to do everything the official app does inside of Openhab. So, change the temperatures setpoints, turn on and off, read all parameters like fume temperature etc.
This is the link to the python script i’m using to control my stove.
It might be usefull for somebody else, I sure hope so.
( You can control the stove via MQTT json messages, so its actually not an openhab integration per se )