You can find handy instructions for the Wood Pellet Burner assembly right here in our YouTube clip. Alternatively, here is a quick step by step guide.
Start by sliding in the Hopper (0039) into the Burner Body (0036)
You can then insert the Grate (0038) into the Burner Tray (0037) before sliding this into the Burner Body
Finally, you can use the keyhole shaped holes on the Burner Body to hook the Burner onto the rear of your Uuni. Make sure that you tighten the bolts using the included Allen Key.
We also have our Uuni Burner Quick Start Guide which you may find useful.