Hi all
I am modeling a building with hap 4.5 .the building has about 70 spaces and i need to investigate the economic status of fan coils installed in this building for example if they are designed and selected correctly or not?
But an unexpected result shows up in the system psychometric table. The inlet air has 20 degrees temperature but at mixing point (ventilation return mixing -outlet) i get an amazing temperature -17 degrees!!How cloud this be possible??!!
But it seems that the results for zones are correct

Any clue would be appreciated .best regards