I am currently modeling a zoo building that is heated and ventilated
only. According to ASHRAE 90.1 Appendix G, I have to model both heating
and air conditioning even if no air conditioning exists. For this size
building I have to model a System 3 - rooftop air conditioner with gas
heat for both the base building and the proposed building. Is there
anything in Appendix G that would prevent me from setting the cooling
thermostat setpoint up to 90 degrees to prevent cooling energy from
being included in the simulation as long as I use the same setting for
both proposed and base models?

Allan Fox, P.E. CBCP, LEED AP