Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Currently EnergyPlus only allows cycling fans (Fan:OnOff) for the ZoneHVAC:WaterToAirHeatPump object. Since this is the same in OpenStudio, I would recommend using it instead of the translated IDF for your model.
In the current version of OpenStudio, the Supply Air Fan Operating Mode Schedule Name field can be used for additional control of the fan. Here's the description:
Field: Supply Air Fan Operating Mode Schedule Name
This alpha field specifies the name of the supply air fan operating mode schedule. The supply air fan operating mode may vary during the simulation based on time-of-day or with a change of season. Schedule values of 0 denote that the supply air fan and the heating or cooling coil cycle on and off together to meet the heating or cooling load (a.k.a. AUTO fan). Schedule values other than 0 denote that the supply air fan runs continuously while the heating or cooling coil cycles to meet the load. If this field is left blank, the model assumes the supply air fan cycles with the heating or cooling coil throughout the simulation.
