scope:

Specifies requirements and testing of ratings and performance of air handling units as a whole. It also specifies requirements, classification and testing of specific components and sections of air handling units. For many components and sections it refers to component standards, but it also specifies restrictions or applications of standards developed for standalone components. Is applicable both to standardized designs, which may be in a range of sizes having common construction concepts, and also to special custom-design units. It also applies both to air handling units which are completely prefabricated and to units which are built up on site. Generally the units within the scope of this standard include at least a fan, a heating coil and an air filter.