[Hap-users] Modeling Powered Exhaust

Matthew Scott MScott at nefisher.com
Mon Nov 5 15:20:21 PST 2012

What is the proper way to model the powered exhaust on an RTU with say
10,000 cfm supply air and 2,000 cfm outside air?


Is it as simple as using the Return Fan setting with the BHP/efficiency
of your powered exhaust fan and the rest is taken care of by the outdoor
air schedule?



Matt Scott

N.E. Fisher & Associates, Inc.

329 East Second St, 2nd Flr

Boyertown, PA 19512

e: mscott at nefisher.com

p: 610-369-3190

f: 610-369-3194


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