I am working on a project which is equipped with air-cooled chillers. According to ASHRAE 90.1-2007, Appendix G, table G3.1.3.7. I was required to use water-cooled chiller in the referece energy model.
Now, I am filling in ASHRAE compliance forms and I am not sure if I should compare the proposed chiller (and its efficiency) with air-cooled chiller or if I should compare it with the minimum efficiency of water-cooled chiller as it was done in energy modeling.