Direct heated tunnel ovens Manufactures In India Direct heated tunnel ovens use the burners placed directly in the baking tunnel for reaching required temperature. Part of the burners is placed directly above the product and the part of the burners are placed under the band. Burners are of lower power in order than the burners used in cyclotherm or convection baking band ovens. Naturally, their number is several times higher. With more burners you can in more detail set up the temperature curve according to the technology requirements and thus keep the continuous quality of the products.