VAV series PFP

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I was wondering if you knew how to model a VAV series fan powered box system. I have a 75F return plenum that mixes with 45F supply air in the FPB before it exits the diffuser but cannot get the program to do that. Any ideas? Any feedback would be appreciated.

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Basically, you can't explicitly specify these parameters.

But, given you have 45 degree supply air (specify that in the create systems temp tab) (min/max at 45 degrees).

Then, given your room setpoint is probably 75 degrees, the plenum should be very close to 75 degrees (assuming a return air plenum), and you have your intended model.

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Bob
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