Clock Wood burners How to Get the Best from your Appliance: 4 Always read the operation instructions and familiarize yourself with your appliance before you use it. Always follow the manufacturer's instructions on maintenance and use. # Use dry fuel and wood to reduce emission of smoke and other gases. Fuel should be well-seasoned and preferably have low resin content. You should not use any wood that has any kind of coating on the surface e.g. varnish or paint, as harmful gases may be emitted on booming.