Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
The AirLoopHVAC:UnitarySystem object does not contain an outside air system. You need to add an AirLoopHVACOutdoorAirSystem to the AirLoopHVAC structure separately from the unitary. Look at UnitarySystem_DXCoilSystemAuto.idf as an example.
| | 2 | No.2 Revision |
The AirLoopHVAC:UnitarySystem object does not contain an outside air system. You need to add an AirLoopHVACOutdoorAirSystem to the AirLoopHVAC structure separately from the unitary. Look at UnitarySystem_DXCoilSystemAuto.idf as an example.
Assuming you have an outdoor air system installed and properly configured, you can verify the operation with one of the following output reports.
Output:Variable,*,Zone Mechanical Ventilation Mass Flow Rate,detailed; !- HVAC Average [kg/s]
Output:Variable,*,Zone Mechanical Ventilation Mass,detailed; !- HVAC Sum [kg]
Output:Variable,*,Zone Mechanical Ventilation Standard Density Volume Flow Rate,detailed; !- HVAC Average [m3/s]
Output:Variable,*,Zone Mechanical Ventilation Standard Density Volume,detailed; !- HVAC Sum [m3]
Output:Variable,*,Zone Mechanical Ventilation Current Density Volume Flow Rate,detailed; !- HVAC Average [m3/s]
Output:Variable,*,Zone Mechanical Ventilation Current Density Volume,detailed; !- HVAC Sum [m3]
Output:Variable,*,Zone Mechanical Ventilation Air Changes per Hour,detailed; !- HVAC Average [ach]
Or the most direct way, by reporting the oa node flow rate directly.
Output:Variable,*,System Node Mass Flow Rate,detailed; !- HVAC Average [kg/s] <-- filling in the oa node name for *
Output:Variable,*,System Node Standard Density Volume Flow Rate,detailed; !- HVAC Average [m3/s]
Output:Variable,*,System Node Current Density Volume Flow Rate,detailed; !- HVAC Average [m3/s]
