The complexity and proprietary nature of DDC systems can make it difficult to stay current with the designs, installations, operation and maintenance. This guide was developed specifically to help building owners and consulting/specifying engineers with these issues.
Both generic and specific information on DDC systems:
Getting Started – an overview of direct digital controls
DDC Information - Manufacturer’s product list:
The Iowa Energy Center developed DDC-Online.org in conjunction with the U.S. Department of Energy Office of Building Technology, State and Community Programs (DOE-OBT), Pacific Northwest National Laboratory (PNNL) and Facility Dynamics Engineering.