I was testing with new generated maps only (that's the idea right :)), but I noticed the burner assembly was available when I tested the mod in my current world.
Then I tried a workaround and it worked: Disable the mod, generate a new map, save, quit, enable the mod, load the map you just created. The burner assembly machine will pop into existence in your quickbar.
Not ideal, but it's a way to play it until it gets fixed