Revision history
R0 (June 2019) Initial release.
R1 (July 2019) Updated wiring diagrams and made minor edits.
R2 (October 2019) Updated wiring diagrams, added LED status indicators, and information on
using a text file to modify settings in multiple air handlers.
R3 (November) Added table of basic default settings and other minor changes.
R4 (May) Introduction of the AHU 1200 and AHU 1600 models