Fan Coils, Cab Heaters, and Unit Vents

VAV boxes get most of the attention in BAS training because they are common and their sequences are interesting. But on any real job you will run into a dozen other terminal unit types, each with its own logic, its own failure modes, and its own commissioning quirks.

This lesson is a quick reference, not a deep dive. Open each card, read it, understand what makes it different. By the end you should be able to walk up to an unfamiliar piece of equipment and have a working theory of how it is controlled before you even open the controller.

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