This Standard applies to newly produced direct gas-fired crop dryers of the recirculating or non recirculating type hereinafter referred to as “dryers”, whose primary purpose is to provide process heating to dry farm crops. These dryers are used in non-occupied spaces and are constructed of non-combustible materials having input ratings of 12,500,000 Btu/hr (3 663 389 W) or less, constructed entirely of new unused parts and materials.
This Standard refers to equipment in which heated air is used to reduce the moisture content of farm crops.
