Missing something in DDVAV

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Hi Gang:

I have two models, one VAV, the other DDVAV. The VAV shows fan energy varying as it should (also have VFDs installed). But the DDVAV is not indicating any flow variance. I have a dual fan system installed, and all (I think) parameters are set to variable Speed.

So what parameter did I forget?


John R. Aulbach, PE

John Aulbach's picture
Joined: 2011-09-30
Reputation: 1