A/C mounted on ICF basement?

[Chevyho]

Hey, this is my first post on this forum. Had ac installed about 6 years ago and they mounted the unit to the side of our icf basement. Not sure if this is a normal type of install or not, just started wondering lately if I should take any measures to keep moisture out of the cavity they created? (Spray foam, silicone, etc). I was thinking about just siliconing around the mount and anywhere that water can penetrate the icf foam, or should I just leave it as is? I am hesitant to fill with spray foam incase I need to access the bolts. Thanks for any help.