ATLANTA - At a minimum, direct digital control (DDC) systems control comfort in buildings. But a networked, programmable control system can do much more, according to Jim Coogan, P.E., Siemens Building Technologies.
Coogan will present an overview of DDC systems in "Design and Specification of DDC Systems," a professional development seminar being offered by the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) scheduled for May 17-18 in Chicago.