Suley's profile - activity

Yes an error for lack of setpoint manager came up also. Up and running now. Thank you!

I'm trying to model VRF with dedicated ERV DOAS. I started with an empty air loop to model the ERV and then I drag/dropped an outdoor air control to place an Air-to-Air heat exchanger. I then drag/dropped the thermal zone into the zone drop areas. I am working through some runtime errors and the remaining ones are primarily related to the nodes immediately preceding each thermal zone in the ERV air loops (there are two ERVs in the project):

* Severe * Node NODE 52 connects to no component * ~~~ * Occurs in Supply Air Path=AIR LOOP HVAC 1 SUPPLY PATH * ~~~ * Check the connection to a ZoneHVAC:EquipmentConnections object * ~~~ * Check if this component is missing from the Supply Air Path

I was careful to input OA rates as described here.

I'm not sure how to address the no connection error when visually it appears there is a connection as shown in this jpg: C:\fakepath\ERV.JPG

Matt, Further to your #3, how is the measure you mention different than using the Set Attributes to Selected Spaces button? It's pretty easy and handy button. However, tell me more about your measure as I'm sure you have some enhancements that I can't think of at the moment :)

Hi David,

Thank you for the detailed response. I've learned tricks of SaveAs in lieu of Save, close project and restart in tandem with the Diagnostic script. A moving target but I know better when to stop, be careful, and preserve the preceeding work (most of the time! ha). You say, "You could break the plenum into 4-5 separate plenums..., but you can also make the plenum floor and ceiling a single solid surface...as adiabatic". Do you mean draw the plenum in place, but don't do an intersect or even a match, and just straight assign the top/bottom surface to adiabatic + set construction?

Yes that's my approach too although the Add Output is a good thing to add routinely. One note, is if I have adjacency problems during the Match and an internal wall is still defined as external, they can be manually edited via the Inspector, by assigning whatever surface that mates up against the adjacent one as the Outdoors Boundary Condition, then both become internal.

I've observed how plenums are added in the HVAC systems tab for OS. In my model though, I'm having problems with intersection and surface matching when actually adding plenums to the geometry: there are mis-assigned surface(s), some are lost, and sometimes new problem(s) arise when I re-open the file. Any suggestions on ways/systematic approaches to minimize or eliminate surface intersection and matching problems? I'm careful with making nice orthogonal lines and using the Create Spaces option or New Space before drawing new spaces. Any alternate approaches on plenums, i.e. setting adjacencies properly if not including the plenum geometry in the model?