I am having problems simulating a CentralHeatPumpSystem in E+. I started the with a model that had successfully simulated a water cooled chiller with it's associated CHW and Source loops and District heating with it's associated hot water loop. I replaced the water cooled chiller with CentralHeatPumpSystem placing the CHW and Source inlet and outlet on the same nodes as the water cooled chiller and removed the District heating and placed the CentralHeatPump HW inlet and outlet on the same nodes. The IDF editor did not allow me to select the nodes from the manager window so I just typed them in manually as I had seen the Example Files had this problem as well. I received the following node connection errors that made my simulation fail. It appears that EnergyPlus is not recognizing the nodes for this object as it should, almost like it is not a fully functional object yet. However, I have seen other discussions on this forum from people that have successfully used this object. What could I be doing wrong?
* Severe * Node Connection Error, Node="NODE 23", The same node appears as a non-parent Inlet node more than once. * ~~~ * Reference Object=PIPE:ADIABATIC, Name=PIPE ADIABATIC 2 * ~~~ * Reference Object=CENTRALHEATPUMPSYSTEM, Name=CHILLERBANK * Severe * Same component name and type has differing Node Names. * ~~~ * Component: CENTRALHEATPUMPSYSTEM, name=CHILLERBANK * ~~~ * Nodes, inlet: NODE 29, outlet: NODE 33 * ~~~ * & Nodes, inlet: NODE 101, outlet: NODE 132 * ~~~ * Node Types: UNDEFINED & Hot Water Nodes * Severe * Same component name and type has differing Node Names. * ~~~ * Component: CENTRALHEATPUMPSYSTEM, name=CHILLERBANK * ~~~ * Nodes, inlet: NODE 29, outlet: NODE 33 * ~~~ * & Nodes, inlet: NODE 108, outlet: NODE 131 * ~~~ * Node Types: UNDEFINED & GLHE Nodes * Warning * Potential Node Connection Error for object CENTRALHEATPUMPSYSTEM, name=CHILLERBANK * ~~~ * Node Types are still UNDEFINED -- See Branch/Node Details file for further information * ~~~ * Inlet Node : NODE 29 * ~~~ * Outlet Node: NODE 33 * Warning * Node Connection Error for object CENTRALHEATPUMPSYSTEM, name=CHILLERBANK * ~~~ * Chilled Water Nodes not on any Branch or Parent Object * ~~~ * Inlet Node : NODE 23 * ~~~ * Outlet Node: NODE 33 *** There were 3 node connection errors noted. * Fatal * Previous Conditions cause program termination. ...Summary of Errors that led to program termination: ..... Reference severe error count=26 ..... Last severe error=Same component name and type has differing Node Names. *** Warning: Node connection errors not checked - most system input has not been read (see previous warning). *** Fatal error -- final processing. Program exited before simulations began. See previous error messages.
