In more recent versions, added requirements for the use of DDC controls along with the use of control sequences such as economizers (air and waterside, and most recently, with “self-diagnostic” ...
The advent of electromechanical controls in the 1970s, analog controls in the 1980s, direct digital control (DDC) in the 1990s, and complete building control integration in the 2000s has progressively ...
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