Before I retired I saw many residential units where the mca and the max overcurrent protective device were the same. It used to be that the max ocp was 175% of the fla of the unit.Yes, your fine. I'm surprised the MCA and MOCP are so close to each other. Does this unit have a soft start or VFD?
Curious, is it a Trane unit? I just hooked up a roof top unit that said " minimum circuit ampacity 44 amps" and "maximum fuse or circuit breaker 45 amps" I put a 50 amp because a 45 amp QOB is virtually non existant and I cannot get 45 amp fuses until who knows when. It seems the min and max are getting closer on the newer units.