Hello, I intend to adapt my coal-fired boiler to burn wood pallets. Due to the fact that the prices of burners reach quite considerable amounts, I have decided to make such a burner on my own and only buy the original controls for it. After browsing through a few topics, I already have a more or less outlined scheme of how to make it. The basic and nagging question for me is what safety devices and sensors should be in the burner. I know that original burners include, among others, photocells and temperature sensors. Please give me some advice as to the best type of sensor to use and where they should be fitted on the burner to ensure they perform their function best. If there is anyone who has already made such a burner for themselves and would like to share their observations and possibly give me some tips, please write in, greetings.