Your browser does not support the video tag. Interactive DDC simulators with graphic programming allow complete set-up and troubleshooting of HVAC systems. PC's are networked to the DDC panels. Pneumatic and DDC in a combined seminar of typical HVAC system controls in an institutional environment. Complete textbooks on the subject seminar for each attendee Graphical programming with live systems controlled by the DDC Module Controller. System graphics allow a more realistic training environment .