Basement system for Baseline Building

First be certain that the spaces qualify as semi-heated. See the 90.1 definitions for "space". This definition does not have anything to do with the set-point temperature in the space. If it is semi-heated you do not have to include a cooling system. If semi-heated model the same system as the proposed in those spaces. If it is not semi-heated then the baseline should be the VAV system with reheat and include a cooling system in both the proposed and baseline. You can set the temperature in the space within the models so that the cooling system never turns on. Make sure the temperture setting is the same in both models.