UNIFIED FACILITIES CRITERIA (UFC) HEATING AND COOLING DISTRIBUTION SYSTEMS Any copyrighted material included in this UFC is identified at its point of use. Use of the copyrighted material apart from this UFC must have the permission of the copyright holder. This UFC supersedes TI 810-32 dated 10 January 2002. The text of this UFC is the text of TI 810-32. The format of this document does not conform to UFC 1-300-01; however, it will be reformatted at the next revision.