Ac unit worked fine…Is this a new type of configuration?
Southern Calif. House built in 2004
http://i187.photobucket.com/albums/x296/dawlita/Myung015-1.jpg
If you are referring to the sheet metal chase for the freon lines then that’s a tell-tale sign of having added on the A/C after the original construction. At least it is around here in central Texas. If that’s not what you are referring to then I disavow all knowledge and have no opinion. 
This is not an original installation. The unit has been relocated - that’s the reason for the sheet-metal chase on the refrigerant lines.
The disconnect should have been relocated as well, unless this unit is in direct line-of-sight from the service panel, or the original disconnect.
thanks