How do I fill in an ethanol burner and how long should I wait before I refill?

To fill the burner, you need to carefully pour bio-ethanol fuel into the burner opening making sure that the liquid does not spill or overflow. If this occurs, you must wait several minutes until it evaporates before lightning. When the flames are out, you need to wait until the burner is cold (+/- 20minutes) before refilling. You can learn more about ethanol fireplaces in this article: What is an Ethanol Fireplace? A Complete Guide to Bio Fireplaces.