[Equest-users] Water side economizers and Dx Cooling

[jacob goodman]

Dear list,
I have been asked to model a package of ECM's that include both air side 
and water side economizers. The model utilizes PSZ air side system with 
Dx cooling via water cooled condensers. Are these two types of 
economizers mutually exclusive? Can water side economizers be modeled 
without the presence of a chiller to bypass?

Thanks,
Jacob