The "shut off" and restart voltage settings are for the "load" terminals and have nothing to do with the "battery" terminals. You should have the batteries on the battery terminals and nothing on the load terminals when using the controller for RVing.
The only settings you care about are the charging voltage (absorption voltage ) and floating voltage (if they are not just the one setting for both like on a Solar30 )
Be sure to always have the controller connected to the battery first, then hook up the array. Always unhook the array before disconnecting the battery side.