Can you refinance FHA right away and then not have to live there?

[Ellie Narie]

If you get a multi unit building with an FHA loan, and it appraises for 20% more than you paid for it... can you refinance it to conventional within a few months?

And if so, will you need a new appraisal, even if you just got it appraised a few months ago? 

And would you not have to live in it for the remainder of the year if you refinance out of fha?