I am modeling a building that has a Packaged VAV system as the base case and
a standard VAV system as the design case. Is there any easy way to set up a
second mechanical system and then reassign the zones to it as a parametric
run? I'm trying to avoid creating a second model so that I can keep any
adjustments to the schedule, loads or envelope identical. I have
investigated setting up dummy zones to assign the VAV mechanical system to,
but I can't figure out how to reassign the zones as a parametric run. Thank
you.

James F. Geers