You will need to look at the ...

You will need to look at the water chemistry to determine if you will reach scaling conditions or not.

CO2 (carbonic acid), HCO3 (Bicarbonate) and CO3 (Carbonate) exist in some form of equilibrium in water. Above pH 8.3 effectively all of the carbon is either HCO3 or CO3. Between pH 4.3 and 8.3 you will have CO2 and HCO3.

Assuming your starting pH is less than 8.3, you will have CO2 that will be removed by the stripper. This will change the ratio of HCO3:CO2. Since dissolved CO2 is carbonic acid, reducing the amount of  acid present will increase the pH, but not above 8.3.  So if your Ca and Mg are hot precipitating at pH 8.3 you should be fine with the stripper. Depending on your TDS, something like the Stiff and Davis Solubility Index can be used to determine Ca precipitation.

If you starting pH is over 8.3, you effectively have no CO2 and the small amount removed by the stripper will effectively not change the pH or the scaling probability.