[Equest-users] Inquiry Regarding Entry of Ventilation Outdoor Air for PSZ System in eQuest

Mark Rasmussen markfrazz at yahoo.com
Fri May 17 11:21:43 PDT 2013


To Whom May Be So Kind,

We are currently creating a Baseline Case Energy Model using eQuest for
LEED NC v2.2 for a facility that will consist of restaurants and a bar/lounge.
According to LEED NC v2.2, we need to use a Packaged Single Zone (PSZ-AC)

system for the baseline case energy model.

We have done so, but I can not find a way to program the Ventilation Outside Air 
(cfm) for the Roof-top units (RTUs). In the Detailed Mode, I can go into Outdoor Air 
tab in the spreadsheet section of the Air-Side HVAC System Parameters, but the 
"Outside Air From System" box is grayed out and listed as "undefined". There are
more options in what I can insert there, and we have tried them all, but none of them 
change the end use results of the energy model.

Currently, the energy model results for Space Heating only show usage resulting
from Conduction Losses and not from Ventilation using Outdoor Air. This is confusing 
to us, since the SV-A Report in the DOE-2 Engine reports shows Outdoor Air in the system results.

Any help to guide us on how to program the Outdoor Air (in cfm or as a fraction of Supply
Air) in our energy model would be very appreciated.

Thanks & Best Wishes!
Mark
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