51.1 HPM tool: Selecting the system diagramTo select the system diagram, Panasonic offers a web-based tool called “HPM tool”.HPM tool is a web-based software accessible via the address www.hpmtool.eu byusing a standard Internet browserHPM tool permits quick and easy selection of the right system diagram for yourheating system.Fig 1.1: Different modules are combined into a system diagram. HPM tool then provides a system diagramnumber which is entered into the controller and the corresponding terminal configurationBy making selections from the menu system near the top of the screen, the modulescan be combined into a system diagram corresponding to the actual heating system inuse. HPM tool then generates a system diagram number. This has to be entered duringinitial startup of the controller.The terminal configuration displayed in HPM-tool shows to which input and outputterminals the sensors, pumps and valves must be connected. The terminalconfiguration can either be printed out or saved as a Microsoft Excel file.