Hi Quenton,
You can find the scaling factor in the "Other Config" tab in Configure.
If you plan on monitoring voltages above 2.5V, it would be best to divide them down to about 1.6V at the MON pin. If you were to divide them down to say 2.2V, the OV Fault value of +15% would be above 2.5V so you would never have an OV Fault.
Regards,
Dan