The thing beyond the reefer instructions themselves is how you will drain condensation water from it.
Directly into bilge below it is a generally accepted no-no.
Plumbed to drain directly to lower bilge and out via the bilge pump, is better but can still be stinky.
Separate dip tube and pump overboard is least stinky, but has a tendency to fill water too much before you remember to pump.
Take heart that the pros don't know which is best either.