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RE: [EnergyPlus_Support] Unbalanced exhaust air flow warning




Miroslav,

1.       An exhaust fan which cycles will cause this warning, and there is nothing you can do about it (I am pretty sure)

2.       An exhaust fan which runs constantly will not normally cause this warning if:

·         It operates with the same schedule as the air loop fan and..

·         the air loop uses a mixing box with variable outdoor air ability and sufficient variability to stay balanced (e.g. maximum outdoor air + infiltration >= maximum exhaust air)

o   Infiltration is normally small, so it doesn?t affect the balance very much.




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