Direct digital control (DDC) technology has introduced considerable change to the HVAC industry. While advances in this technology have been quick, changes to the methods and structure of documentation for DDC systems has progressed more slowly. Documentation has become “computerish” to the point that many HVAC professionals and users find it difficult to understand. A process flow diagram, depicting the relationships of the various elements in the control process, will make the DDC system easier to depict and comprehend.
Citation: Symposium, ASHRAE Trans., vol. 95, pt. 2
Product Details
- Published:
- 1989
- Number of Pages:
- 2
- File Size:
- 1 file , 230 KB
- Product Code(s):
- D-27236
