Begin Zone Timestep After Init Heat Balance¶

The calling point called "BeginZoneTimestepAfterInitHeatBalance" occurs at the beginning of each timestep after "InitHeatBalance" executes and before "ManageSurfaceHeatBalance". "InitHeatBalance" refers to the step in EnergyPlus modeling when the solar shading and daylighting coefficients are calculated. This calling point is useful for controlling components that affect the building envelope including surface constructions and window shades. Programs called from this point might actuate the building envelope or internal gains based on current weather or on the results from the previous timestep. Demand management routines might use this calling point to operate window shades, change active window constructions, etc. This calling point would be an appropriate place to modify weather data values.