Please follow the steps below:

This default setting is done in Edit Payment Options on the Payments Tab of the Bank record.
1. Click on Edit Account Details on the Banks Page.
2. Click the Payments Tab.
3. Click on EFT in the grid.
4. Click Edit Payment Options at the bottom of the screen.
5. Go to EFT General.
6. You will see the check box for to Include carriage return/feed line. Mark this box and it will become the default after you click OK.