scope:

This standard specifies the requirements and test methods for the construction, safety, classification and marking of non-domestic gas-fired overhead radiant tube heaters incorporated into a multi-burner system (referred to in the body of the text as the 'system') with each burner unit under the control of an automatic burner control system. Is applicable to Type B22 and Type B23 systems intended for use in ohter than domestic dwellings, in which the supply of combustion air and/or the evacuation of the products of combustion is achieved by mechanical means.