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BUG Report in Air Terminal

asked 2015-08-14 15:04:43 -0500

updated 2015-11-12 15:03:12 -0500

Reporting a bug when I replace Diffuser: Series PIU Elec Rht by a Diffuser: Air Terminal Single Duct Uncontrolled.

Operating System: Windows 7 and OS Version: 1.8.1.
Follow link to the files:

Using the default in the model Package Rooftop VAV with Parallel Fan Power Boxes and Reheat, all is ok:

When I replace by a Diffuser: Air Terminal Single Duct Uncontrolled, bug occur.

Now, when I try to exclude the system or the diffuser in the Thermal Zones, open studio crash:

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calling @hugopft

Geraldo Pithon's avatar Geraldo Pithon  ( 2015-08-14 15:12:47 -0500 )edit

@Pithon you should include the operating system and OpenStudio version in your report.

MatthewSteen's avatar MatthewSteen  ( 2015-08-14 15:37:42 -0500 )edit

Ok @MatthewSteen. Operating System: Windows 7 and OS Version: 1.8.1. I'm going to update the question.

Geraldo Pithon's avatar Geraldo Pithon  ( 2015-08-14 15:45:40 -0500 )edit

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answered 2015-08-14 18:05:02 -0500

Thank you @Pithon.

I looked at your OSM files and this is definitely a bug. I have filed a GitHub issue here.

You can workaround this temporarily by opening your bug report OSM in a text editor and manually deleting these lines...

  ,                                       !- Zone Equipment 1
  1,                                      !- Zone Equipment Cooling Sequence 1
  1,                                      !- Zone Equipment Heating or No-Load Sequence 1

from any OS:ZoneHVAC:EquipmentList that has them.

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@MarkAdams, I thank you for as short answer and solution to the problem.

I solved the same problem in another way that may be useful to other users: deleted the air loop and thermal zones involved in bug and created all over again, this time with a different diffuser.

Geraldo Pithon's avatar Geraldo Pithon  ( 2015-08-20 17:03:11 -0500 )edit

@Pithon I have made a bug fix, if I send you a pre release installer package would you be willing to verify that the problem is gone? If the answer is yes, then please email me at and I'll link you to the installer.

Kyle Benne's avatar Kyle Benne  ( 2015-08-31 13:08:00 -0500 )edit

Thank you @Kyle Benne! I'm writing to you!

Geraldo Pithon's avatar Geraldo Pithon  ( 2015-09-01 06:45:17 -0500 )edit

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Asked: 2015-08-14 15:04:43 -0500

Seen: 329 times

Last updated: Aug 14 '15