Error with "ZEDG VRF with DOAS" measure

asked 2019-05-13 14:30:05 -0600

dpud12 gravatar image

updated 2019-05-13 15:08:59 -0600

When I apply the ZEDG VRF with DOAS measure to the Midrise Apartment prototype from the Create DOE Prototype measure (90.1 - 2013, Climate Zone 6A) I get the following error when I try and run my simulation. image description

Digging into the ERR file I get the below error for each of the zones in the model image description

Any idea why this is happening or how to fix it? Thank you in advance for any insight you can offer.

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@dpud12 thanks for pointing this out. The issue here seems to be the EMS code in the existing model HVAC system that the ZEDG measure isn't cleanly removing. It may take us some time to address that, but you could pass in a model without an HVAC system, or at least without HVAC. Another issue is that this measure was specifically for primary and secondary schools. You can run on other building types, but it may not work as expected. This measure has hard coded school space types like Kitchen and Gym that get a dedicated secondary system. This won't happen on other building types.

David Goldwasser gravatar image David Goldwasser  ( 2019-05-14 13:57:50 -0600 )edit

@David Goldwasser ok makes sense. And is there a plan to make a more generally applicable form of the measure that works well for all of the DOE prototype buildings? I was able to run it without issue for both the high rise apartment and small office models so far

dpud12 gravatar image dpud12  ( 2019-05-15 07:39:40 -0600 )edit

@dpud12 we have more generally applicable measure (NZEHVAC) for high performance HVAC systems. It currently has this same issue but we plan to update it to address removal of EMS.

David Goldwasser gravatar image David Goldwasser  ( 2019-05-15 11:49:22 -0600 )edit

Hi David

May I ask you what is the difference between the VRF with DOAS and ZEDG VRF with DOAS measures Thank you

Brianna gravatar image Brianna  ( 2021-05-26 10:46:04 -0600 )edit

ZEDG VRF with DOAS is newer and well maintained, I don't have specific details on the differenes.

David Goldwasser gravatar image David Goldwasser  ( 2021-05-26 12:41:52 -0600 )edit