[Equest-users] OA From System Question

[Paul Diglio]

Thanks James.  I tried restoring the defaults you suggested, but the ERU hourly 
report is still showing only 1/3 of the required primary air for the chilled 
beams and it still drops to .01 CFM during the summer.

 Paul Diglio, CEM, CBCP


87 Fairmont Avenue
New Haven, CT  06513
203-415-0082


www.pdigliollc.com




________________________________
From: James Hansen <JHANSEN at ghtltd.com>
To: Paul Diglio <paul.diglio at sbcglobal.net>; equest-users at lists.onebuilding.org
Sent: Mon, June 3, 2013 9:23:45 AM
Subject: RE: [Equest-users] OA From System Question


I restored default to the other zonal level OA quantities (OA per person, etc), 
and kept the OA CFM in that you had listed, and I'm showing OA CFM for ERU-1.  
But I only had a few minutes, so you might want to double check.
 
GHT Limited
James Hansen, P.E., LEED AP
Senior Associate
1010 N. Glebe Road, Suite 200
Arlington, VA  22201-4749
703-243-1200 (office)
703-338-5754 (cell)
703-276-1376 (fax)
www.ghtltd.com
 
From:equest-users-bounces at lists.onebuilding.org 
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Paul Diglio
Sent: Monday, June 03, 2013 9:11 AM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] OA From System Question
 
Morning:

I am trying to model a chilled beam system as induction units.  The primary air 
is supplied by an ERU.  I set the outside air to 0 on the chilled beams HVAC 
systems tab.

In the chilled beam zone tab I set the outside air to the primary CFM and the 
overall CFM to the induced air flow.

Per the eQuest help menu, "The sum of the OA requirements for all SYSTEMs that 
reference an OA-FROM-SYSTEM is used to set the referenced OA-FROM-SYSTEM value 
for MIN-OUTSIDE-AIR, SUPPLY-FLOW as well as adjust the referenced OA-FROM-SYSTEM 
directly served ZONE maximum and minimum flows for both heating and cooling." 


But per my hourly reports, the ERU is not supplying the necessary amount of 
primary air and in the summer the ERU flow drops to .01 CFM.

Attached are the project files.  Any ideas?

Thank you,
 
Paul Diglio, CEM, CBCP
87 Fairmont Avenue
New Haven, CT 06513
203-415-0082
 
www.pdigliollc.com
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