If it is a model where the OS is only stored on disk then you need to get a disk from a working snap 2200 (which will have the OS on it) to get your one going again.
Overland (the owners of the Snap brand now) do not make the OS available for owners of old models except on payment of a (considerable) fee. So there is nowhere you can (legally) download the OS you need.
You might be able to possibly buy a disk that had been in another 2200 if you could find one. Or you could buy another working 2200, get the OS, then sell it on. See
http://forums.procooling.com/vbb/sho...highlight=2200 for a similar case.
However you might be OK. Looking on the wiki (
http://wiki.procooling.com/index.php...r_LED_Patterns) double flashes means a check operation is in progress. You need to wait while this completes, then you hopefully will find that the unit can be connected to and is working properly. A check operation can take some time, depending on disk size, the slowness of the CPU etc, the Raid configuration, number of disks etc. If you are impatient it won't complete and each time you boot it will restart the disk check. Give it a few hours or leave it overnight and try connecting the next day.
Whether you have bricked it depends on exactly what you did. The snapserver would keep copies of the OS on both disks. As long as you didn't remove both disks at the same time and wipe them both away from the snapserver the OS should still be there. If you left them in the unit and formatted the disks as you say then this only formats the data area; the OS is on a separate hidden partition and shouldn't be affected by this.
Andrew