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In my OpenStudio/EnergyPlus model, I observe that there is no sensible heat gain or loss reported from ventilation, even though the building uses mechanical ventilation via an air loop connected to HVAC equipment. However, sensible heat gain/loss from infiltration is present. Is this because the outdoor air brought in through the air loop is preconditioned by the HVAC system at the mixed air node, and therefore does not directly contribute to zone sensible load?

In my OpenStudio/EnergyPlus model, I observe that there is no sensible heat gain or loss reported from ventilation, even though the building uses mechanical ventilation via an air loop connected to HVAC equipment. However, sensible heat gain/loss from infiltration is present. Is this because the outdoor air brought in through the air loop is preconditioned by the HVAC system at the mixed air node, and therefore does not directly contribute to zone sensible load?