Referring to the HVAC Hierarchy, the first task to perform using the 
HVAC Window is to create an 
HVAC System Element in the Design database.
 
        Before creating an HVAC System Element the correct Database elements should already be present in the 
Model Explorer, that is, a World, Site and
 Zone should exist. Refer to 
Site for further information.
 
        Using the HVAC Window, select 
HVAC/Branches in the 
Categories drop-down list and then select 
HVAC System Element in the 
Available Type drop-down list to display the 
Create HVAC window:
 
        The Create HVAC window is a dual purpose window, use it to either 
Create a new HVAC System element (by default) or 
Modify the name of an existing HVAC System element.
 
        Using the HVAC Window select 
HVAC/Branches in the 
Categories drop-down list and then select 
HVAC System Element in the 
Available Type drop-down list to display the 
Create HVAC window.
 
        The window title changes to Modify HVAC and is populated with the name of the currently selected HVAC System element.