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Hi all,

I'm working to add AirTerminal:SingleDuct:SeriesPIU:Reheat to my workflow and am running into an issue with the "Secondary Air Inlet Node" parameter remaining blank even when adding a zone to its respective demand side branch when using the OpenStudio SDK (2.9.1).

My workflow has been the following for adding zones. I first create the supply side of the AirLoopHVAC and assign the air terminal I want in the supply side. From the GUI's perspective, this is how it would look when adding aAirTerminal:SingleDuct:SeriesPIU:Reheat:

However, even after adding a zone to this airloop's demand side usingairloop_hvac.multiAddBranchForZone(zone), this AirTerminal:SingleDuct:SeriesPIU:Reheat's "Secondary Air Inlet Node" is still blank. Interestingly enough though, if I make this a multizone system, and add another zone to using the same airloop_hvac.multiAddBranchForZone(zone) call, this second terminal DOES have a populated "Secondary Air Inlet Node" (it's the zone's return air node).

The main questions to answer are:

• Is there a way to manually set the "Secondary Air Inlet Node" for an AirTerminal:SingleDuct:SeriesPIU:Reheat object?
• If not, is this implementation for adding zones to terminals on the demand side of an air loop incorrect or bad practice?

Hi all,

I'm working to add AirTerminal:SingleDuct:SeriesPIU:Reheat to my workflow and am running into an issue with the "Secondary Air Inlet Node" parameter remaining blank even when adding a zone to its respective demand side branch when using the OpenStudio SDK (2.9.1).

My workflow has been the following for adding zones. I first create the supply side of the AirLoopHVAC and assign the air terminal I want in the supply side. From the GUI's perspective, this is how it would look when adding aAirTerminal:SingleDuct:SeriesPIU:Reheat:

However, even after adding a zone to this airloop's demand side usingusing airloop_hvac.multiAddBranchForZone(zone), this AirTerminal:SingleDuct:SeriesPIU:Reheat's "Secondary Air Inlet Node" is still blank. Interestingly enough though, if I make this a multizone system, and add another zone to using the same airloop_hvac.multiAddBranchForZone(zone) call, this second terminal DOES have a populated "Secondary Air Inlet Node" (it's the zone's return air node).

The main questions to answer are:

• Is there a way to manually set the "Secondary Air Inlet Node" for an AirTerminal:SingleDuct:SeriesPIU:Reheat object?
• If not, is this implementation for adding zones to terminals on the demand side of an air loop incorrect or bad practice?

Hi all,

I'm working to add AirTerminal:SingleDuct:SeriesPIU:Reheat to my workflow and am running into an issue with the "Secondary Air Inlet Node" parameter remaining blank even when adding a zone to its respective demand side branch when using the OpenStudio SDK (2.9.1).

My workflow has been the following for adding zones. I first create the supply side of the AirLoopHVAC and assign the air terminal I want in the supply side. From the GUI's perspective, this is how it would look when adding aAirTerminal:SingleDuct:SeriesPIU:Reheat:

However, even after adding a zone to this airloop's demand side using airloop_hvac.multiAddBranchForZone(zone), this AirTerminal:SingleDuct:SeriesPIU:Reheat's "Secondary Air Inlet Node" is still blank. Interestingly enough though, if I make this a multizone system, and add another zone to using the same airloop_hvac.multiAddBranchForZone(zone) call, this second terminal DOES have a populated "Secondary Air Inlet Node" (it's the zone's return air node).

The main questions to answer are:

• Is there a way to manually set the "Secondary Air Inlet Node" for an AirTerminal:SingleDuct:SeriesPIU:Reheat object?
• If not, is this implementation for adding zones to terminals on the demand side of an air loop incorrect or bad practice?

Hi all,

I'm working to add AirTerminal:SingleDuct:SeriesPIU:Reheat to my workflow and am running into an issue with the "Secondary Air Inlet Node" parameter remaining blank even when adding a zone to its respective demand side branch when using the OpenStudio SDK (2.9.1).

My workflow has been the following for adding zones. I first create the supply side of the AirLoopHVAC and assign the air terminal I want in the supply side. From the GUI's perspective, this is how it would look when adding aAirTerminal:SingleDuct:SeriesPIU:Reheat:

However, even after adding a zone to this airloop's demand side using airloop_hvac.multiAddBranchForZone(zone),

airloop_hvac.multiAddBranchForZone(zone)

this AirTerminal:SingleDuct:SeriesPIU:Reheat's "Secondary Air Inlet Node" is still blank. Interestingly enough though, if I make this a multizone system, and add another zone to using the same airloop_hvac.multiAddBranchForZone(zone) call, this second terminal DOES have a populated "Secondary Air Inlet Node" (it's the zone's return air node).

The main questions to answer are:

• Is there a way to manually set the "Secondary Air Inlet Node" for an AirTerminal:SingleDuct:SeriesPIU:Reheat object?
• If not, is this implementation for adding zones to terminals on the demand side of an air loop incorrect or bad practice?

OSM files containing the scenarios from the images above can be found here