While you wait for answers, we may have found some information which could help you.
Click here for Riello Rdb Oil BurnerMy riello boiler won't start after replacing the water pump?
Lost allen screw when bleeding boiler?
how can i bleed my riello 40 oil burner?
Riello Burner Motor Sound?
my riello oil burner just makes abuzzing sound?
riello rd 3 boiler burner unit?