You can install the snow melt mat in a paver application, but there are some specific precautions to consider to protect the ProMelt cable and ensure a long life for your paver field.
You will need to provide a 3/8" to 1/2" layer of sand over your base and cable to protect the cable against damage. You will also need to ensure that the installation will drain properly to prevent refreezing that can cause heaving of your pavers. Further details can be found on pages 11 and 12 of the installation manual.