Installing OS X Mavericks

Hi, I wanted a clean-install for OS X Mavericks so this is what I did:
1. I turned on my MacBook and held the option key until the boot selection menu appeared.
2. I clicked on the 'Recovery' one and erased the Macintosh HD data.
3. Then, I went back to the OS X Utilities menu and I chose the Install OS X option.
4. Finally, I accepted and agreed on everything and the download for OS X Mavericks started.
Now, the download has been runnning for about 30 minutes, and it says ' 22 hours and 59 minutes remaining'. Why is taking so long? PLEASE HELP ME. Thank you in advance.