With a dedicated zoning system, you will have to use a bypass damper to ensure that when only one zone is calling for heat or cooling the system will still move enough air to stop freezing up or over heating. Along with this you will install a LAS (leaving air sensor) to shut down the compressor and leave the fan running if the temp is too low or high. California Economizer works well with this system. I agree with the previous post that sizing is a major issue with zoning and should be carefuly worked out.