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[EnergyPlus_Support] AHU air loop fresh air distribution management



Dear all,

I realized that my AHU VAV air loop is doing something weird that I don't know how to control:

The total amount of fresh air as it is in the main air stream is correct. But the splitter does not seem to distribute the fresh air as it is asked by Sizing:zone. I do not find the right amount of fresh air in each zone despite the fact total is correct. Energy wise it doesn't matter but if I want to calculate humidity and CO2 concentration it does.

I have tried to insert the DesignObject: Outdoor air at the VAV:reheat level since it is supposed to give some outdoor air requirement at the termainla unit level but it didn't change anything.

So did I use it wrong or is there another trick I haven't figured out?

Thank you for your help,
Aymeric



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