A smaller building may have a single, computerized HVAC controller that operates the direct digital control (DDC) system. However, a large building normally requires a more complex system of ...

ATLANTA, GA — The benefits of direct digital control (ddc) systems and recommendations for specifications of ddc systems in hvac control applications are included in a newly published guideline from ...

Direct digital control is used to establish electronic control of the heating, ventilation, and air conditioning systems on campus. Direct digital control systems also allow the consistent use of time ...