Suntec energy systems supplies a range of oil burners from riello bruciatori, italy. Rg series and rg-d series are one and two stage oil burners respectively, for light oil. The riello gulliver rg design features advanced technology that allows combustion to be optimized especially during ignition cycle and shut down. The one stage rg-d series goes from 14.2 kw up to 237 kw with 9 one stage burner models. With this range company has designed a product in which every component is easily accessible, so as to simplify maintenance operations to the maximum. Air supply is adjustable from outside the body through a screw positioned on the upper part of the burner. One of the most important characteristics of this series resides in a variable resistance pre-heater. Possessing all the qualities of the one stage rg series, the two stage rg-d series goes from 142 kw up to 294 kw with 5 two stage burner models.