icon at step 10 to launch a label interface the label interface allows the user to assign a descriptive label to a zone through steps 11 12 and 13 the user selects a zone by its address and enters a textual description the user can also set parameters for each hvac device though a main menu selected at step 14 as shown at step 15 the user selects one zone by address and is presented with a graphical representation of the hvac device for that zone by selecting a parameters icon at step 16 an operating parameter interface is presented as shown at step 17 through the operating parameters interface the user can define operating parameters for the hvac device operating parameters include setpoints pid setup heating and cooling for day night etc fig3 c depicts a fully configured and operating pictorially graphic representation of a heating ventilating or air conditioning system component or subsystem fig4 is a flowchart of an exemplary set up process the process begins at step 210 where the connections between the supervisory controller 114 and the equipment controllers 114 are made the equipment controllers 114 are connected to hvac devices 112 the equipment controllers are also connected to bus 116 to communicate with supervisory controller 104 the supervisory controller is powered up at step 212 at which point the supervisory controller sends a query message on the bus 116.