Plant Calling Tree (schematic - not all routines are shown)[LINK]

ManagePlantLoops (in PlantManager)

PlantHalfLoopSolver (in PlantLoopSolver)

InitLoadDistribution (in PlantCondLoopOperation)

SetupLoopFlowRequest (in PlantLoopSolver)

SimulateAllLoopSidePumps (in PlantLoopSolver)

SimulateAllLoopSideBranches (in PlantLoopSolver)

ManagePlantLoadDistribution (in PlantCondLoopOperation)

SimPlantEquip (in PlantLoopEquipment)

Component simulation routines (in various component models)

UpdateAnyLoopDemandAlterations (in PlantLoopSolver)

SimPressureDropSystem (in PlantPressureSystem)

ResolveParallelFlows (in PlantLoopSolver)

SimulateAllLoopSideBranches (in PlantLoopSolver)

ManagePlantLoadDistribution (in PlantCondLoopOperation)

SimPlantEquip (in PlantLoopEquipment)

Component simulation routines (in various component models)

UpdateAnyLoopDemandAlterations (in PlantLoopSolver)

SimPressureDropSystem (in PlantPressureSystem)

UpdatePlantLoopInterface (in HVACInterfaceManager)