There is no difference in the installer for Xeams Community and Enterprise Edition. It will run as if you have purchased the Enterprise Edition for the first 30 days. It will then get converted to Community Edition unless a license is purchased.
Richard,
The package you download for QNAP from http://xeams.com/XeamsDownload.htm will work on the latest QTS. I'd recommend using that package once you have upgraded your QNAP.