My guess would be that a Nutone food center is not considered a countertop appliance. They are built right in to the countertop and become part of the structure.
In fact, I can see an argument where you would not be allowed to hook the Nutone to the appliance circuit at all. You might have to provide a separate circuit for it (like a garbage disposal) or hook it up along with something else (like a range hood/fan) because it is not something that you can plug in to the countertop receptacles.
It wouldn't be a great argument, but I could make it...
