I just powered up the control. It functions as planned. Hooray!

Construction of the pneumatic segment of the unit begins today.I will assemble on a bench to confirm operation prior to final assembly in cabinet. I will provide pics and vids, once operational I will update electrical and pneumatic schemes to reflect as built revisions. Instrumentation will be the next challenge, current design utilizes gauges and timers. bi-directional airflow monitoring capability is the target, for function and monitoring.