I have used the advice below to bring cooling into the base case design, which was fairly straightforward since the system was a packaged single zone using a furnace for a heat source per table G3.1.1A.

Trying to integrate cooling into the proposed design is giving me fits. The proposed design is a radiant slab. Per the LEED reviewer and appendix G, I have to model an identical cooling system for each case. I created the same cooling system but when I go to assign cooling to any of the zones, it subsequently un-assigns the heating system. I am assuming that this is the case because you can?t have (2) systems tempering one space.

My outside the box solution is to run two models - one with the correct cooling system and one with the correct heating system and combine the required components to for one complete report ? I?m sure the LEED guy will love that.

Am I missing something? Any ideas/suggestions regarding my approach would be greatly appreciated. Thanks again

Travis