topic Re: Change duct system type in Revit MEP Forum

Change duct system type

furqanbaseer — Wed, 03 May 2023 16:34:52 GMT

I have modelled complete floor with a lot of ducts , only to realise I did not change the system type and select the appropriate system. All are now modelled as supply air system - Any way I can assign different systems to already modelled ducts?

Re: Change duct system type

kostask_oionei — Wed, 03 May 2023 17:59:59 GMT

If you have already connected air terminals, you must first disconnect them. Then you can select a duct segment (don't select any fitting) and from properties you can change the System Type.

Re: Change duct system type

RLY_15 — Wed, 03 May 2023 18:39:49 GMT

Connected air terminals/mechanical equipment are going to have a heavy effect on system assignment. You may have to reconnect or modify the terminals to update the duct network to the appropriate system type.

You can tab a duct section enough times to eventually select the duct system for deletion - the system, not the actual ducts. It would convert that system to Undefined. This is more of a blunt hammer approach: ideally you want to be correcting the air terminals/equipment connectors and re-checking the system type to see if the correct type is now selectable.

Re: Change duct system type

iainsavage — Wed, 03 May 2023 19:13:04 GMT

Agreed, see my answer in the other post here