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I may see a potential problem. May is the operative word.

Your unloader valve is wired into the HWH over ride box.

In my opinion it should be wired into the well pump switch box.

How to wire, you may ask. Can’t answer that until we know if the unloader valve you are using is NC normally closed or NO normally open. Meaning if the valve is NO to atmosphere, then the 120V leads will attach to the pump leads, not the power in leads,  at the well pump switch. That way, when the pump turns on, the unloader closes the path to the atmosphere and opens the path to the system.

You may already know the answer to this, but a very quick and simple sanity check is to dump enough air to start the pump. When it finishes it’s cycle and the well pump switch turns it off, you should hear a whoosh of exhaling air from the unloader valve.

I was wrong about not being able to find out if I had a normally closed or open valve, the 3922 is a normally closed valve.  Would love some insight on how this should be powered by the Square D.