A rather recent Dometic 16000 BTU condensing unit, 115 VAC that runs on R22 , 417A,or 407c (there are others)

  and to add to the rarity is has a Dometic "U" series control board installed (this must have been one of the later series of the 22 units)

  The U board series allow this unit to use either Cruisair Controls (SMX style) or Marine Air Controls (the I/O series) as well as the somewhat odd "Q" controls.  This will also run the newer Dometic Smart Touch, touch screen digital controls and the available Microair "Easy Touch" controls (The Easy Touch controls allow connection to be made to your router to enable remote interfacing with your vessels AC system.

This condensing has been tested in all modes and works well, it has been under a pressure test all week to be certain there are no leaks.

  I am going to run this unit connected to a matching evaporator this week and video the results for your peace of mind.