This European Standard specifies the requirements and test methods for the rational use of energy of non-domestic gas fired overhead radiant tube heaters incorporating a single burner system under the control of an automatic burner control system, referred to in the body of the text as ""appliances"".This standard is applicable to Type A2, A3, B12, B13, B22, B23, B42, B43, B52, B53, C12, C13, C32 and C33 appliances intended for use in other than domestic dwellings, in which the supply of combustion air and/or the evaluation of the products of combustion is achieved by mechanical means located upstream of the draught diverter, if provided.This standad is not