Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Add output variables for Site Sky Temperature and all of the Surface Outside Face * variables (well, the key ones). That should reveal what is changing. If the Surface Outside Face Net Thermal Radiation Heat Gain Rate is changing, the simplest way to eliminate external radiant transfer is to use SurfaceConvectionAlgorithm:Outside,SimpleCombined; but that may defeat the purpose of you modeling. To get a constant sky temperature, I am fairly certain you need to make the epw "Horizontal Infrared Radiation Intensity from Sky" (HorzIRSky).
