Robby - the fans must cycle with occupancy, and then when the space is not
occupied the must cycle with load. They can not cycle with load only. For
Mike Kennedy's system he would need to model the baseline with VAV heating
and cooling. And also model the same system in the proposed, however you
could set the heating coil capacities to zero, not create a heating plant,
or not assign any systems to the heating plant for the VAV system. (This is
if you are using Trace 700).

Good luck.

-Shariq Ali