CONNECT EDITION 10.07.00.32 (Update 7)
In OpenPlant Modeler CONNECT Edition, the requirement is to show center-line for HVAC ducts.
In OpenPlant Modeler CONNECT Edition, While placing HVAC rectangular or oval duct center-line is not shown, refer image as shown below. Center-line representation for ducts does not show by default, this wiki article explains how to represent the center-line for ducts.
If above problem still persists, then please create a Service Request and contact the Bentley Product Advantage group. Please include a list of all relevant details to get in depth analysis for a solution or workaround