Virginia CM Trilogy: Configuration and Execution Question

I have a ClimateMaster Trilogy system that was installed a few months ago and had some questions. The system has both air and hot water from geo with auxiliary for both.

1. The installer has aux enabled for air and hot water but has the fuses flipped to provide no power for the aux air. The system has been able to handle the winter ok so far. Perhaps sometimes it takes a little long to hit a target but never that cold. Is this an acceptable or good configuration? Any reason to plug in the fuse (outside of slighter warm comfort on some days)?
2. From looking at the Ecobee mode usage, often I see hot water heating with aux at 8am even though all the temps go down at 8:30am in the schedule since we leave for the day around then. Shouldn't the system realize that and wait a bit to heat water at 8:30 with the geoheat? Anything to do to optimize this?
3. The system also has a fresh air system and a humidifier. When either of those are running, can the system heat hot water if it's not needed to heat air? There are periods where the geo part doesn't seem to be running when I would have expected it to be heating water.

Thanks,
Steve