I bought new Daikin ACs. In the manual is recommended that the top of the indoor AC units should be 15cm (150mm) distance from the ceiling.

My ceiling high is only 240cm. If we use the recommended distance from the ceiling of 15cm and the height of the AC unit 30cm that means the bottom of the AC unit is 195cm from the floor. Is that a problem?

I am smaller than 190cm so at least for me there is no problem of banging my head against it.

Is there a technical reason to install the unit higher?

Thanks

 

P.S.: The technician who installs it wants to use 10cm from the ceiling. But as far as I see that is one of those "we always did it like that" rules - not very scientific. 

 

This is from the manual of the AC. Sorry it's only available in Thai. But you get the idea.

 

No expert but don't you need some top clearance to remove and clean filters? Minimum 15cm I would guess from my own experience.

Possibly closer to the ceiling means more reflected noise from the fans.

Have in my new House 3 meter ceiling height, installed the Units 210 cm from Floor to bottom of Unit.

It is only about air rotation and ease of cleaning/maintenance.