We have a project where each zone has its own outdoor air system, but all zones are connected to the same VRF system.
I am getting a
Failed to add all airloop demand components! error. I’m thinking it might be due to how I am trying to duplicate components. I have tried making the names of all the components explicit, but have noticed that the OASystem component does not have a
params_ input so I can’t specify unique names for it:
The demand side looks fine to me but the two supply objects look identical.
Do you have any suggestions how to solve this?
Hi @MaxMarschall ,
VRF terminal has its own outdoor air setting at zone level, you will need to set them to 0 if you have a separate airloop with outdoor air system attached to zone.
In terms of why it failed to add rooms to airloop demand side is: you cannot add room directly to airloop, it needs an
airloopBranches to add rooms at parallel branches.
It works now, but I have noticed some very strange behavior:
The two definitions are identical (copy-pasted), except for the input into the ListLength component that is plugged into the Ironbug_Duplicate component for the OASystem:
In the top example, it is taken from the HBZones at the start of the definition; in the bottom example, it is taken from a later component. In both cases, the number outputted from the ListLength component is 2. If I enter “2” directly with a number slider, I also get the error message:
Is this a bug or have I made an error?
@MingboPeng I found the issue myself, which was that the Duplicate and FanConstant outputs ended up with different tree structures:
The solution was to simplify them: