Data Center - Baseline System and ACP

1. You are not supposed to use COMNET to determine the baseline system. You need to use 90.1 Appendix G. 2. You can apply that methodology.

1. If it aligns perfectly with 90.1 Appendix G you can certainly use it. COMNET can be a good resource for certainly modeling methodologies, plug load values, etc. You can cite parts of it as justification for how you modeled something. It is not a substitute for Appednix G. 2. I don't think you are applying the requirements of Table G3.1.1A correctly. In your case the predominant condition is the data center. So G3.1.1 exception b would apply to the office. A data center is not a computer server room. 3. Enter Table G3.1.1A with the heating fuel type and area/floors of the building. If you have no heating you use electric. Based on the area you provided this would be a system 7/8. See the note in the bottom of the table that indicates predominat condition which has been interpreted to be by area for virtually all project types. Then based on the difference in schedule you could probably model a system 3/4 for the office. Exception b does not apply to particular space types. The examples given may apply in certain situations. So you select the baseline system based on the predominant conditon and then you start to apply exceptions to it under G3.1.1.