[BLDG-SIM] Modeling a variable air volume make up air fan system

[Mike Tillou]

Greetings All,
 
I am working on a project where I have a make-up ventilation air system that serves 16 VAV air-handlers (one per floor).  The make-up air fan has a VFD to maintain constant pressure in the duct as the OA Dampers at each floor modulate open and closed.  I am using DOE2.2 (eQUEST) and need help using the OA-FROM-SYSTEM command.  Specifically, I cannot resolve how to add a system (make-up air fan) without a conditioned zone.  Do I just create a dummy zone that it serves or is there a better way.
 
Could someone who has used this command before and modeled a similar system please offer some advise.
 
Thank you.
 
Mike
 
 
Michael Tillou, PE
etc Group, Inc.
PO Box 749,  North Adams, MA 01247
Ph. (413) 458-9870   Mbl. (413) 652-1087  www.etcgrp.com <http://www.etcgrp.com> 
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