I have not yet found a clear description of the way of modelling a semiheated zone, so I will attempt to summarize. Please correct/append where needed.

- Exterior surfaces for semiheated spaces should be modeled in the Baseline Case using the semi-conditioned values from Tables 5.5-1 to 5.5-8.

- The system types in Appendix G only cover systems serving conditioned spaces, not semi-heated spaces.

- In semi-heated spaces the baseline gets modeled identically to the proposed with the same heating type, capacity ratios, fan volume, and fan power.

- The energy for the ventilation of a semi-heated space is assigned to process energy?