The MiniRAC boilers pressurized combustion heat exchangers made of steel with inversion flame type and successive turn in the tube system. The high speed of the fumes inside the tube and the high turbolence provoked with the new TURBOLATORS IN STAINLESS STEEL AISI 430, favours the heating exchange, decreases of the consumption, increasing the combustion yeld that reachs an efficiency over 90%. The jacket consists of elegant panels in steel painted with epoxy powder paint, and is totally insulated with rock wool in order to give it high an heat insulation characteristics.

The power losses on the smoke side are so limited as the allow a wide range of choice for operation with gas oil-fire burners with forced air.