HOW A CONTROLLER SENDS AND RECEIVES DATA In a DDC system, a controller is a dedicated computer, which means it is designed to operate only one specific program. An HVAC controller receives information ...

HAYWARD, Calif. - LAMA Books has released a new book,Digital Controls for HVAC Techniciansby Leo A. Meyer, that the company says is written to provide a jargon-free, easy to understand explanation of ...