We are using a DOAS system which delivers 100% outdoor air to the space. In the Baseline model (appendix G), it is a VAV system which delivers mixed outdoor air with return air.
To meet the requirements of ASHRAE 62.1 in the Baseline model, I used the Ventilation Rate Procedure calculation method to determine the minimum outdoor air by using the Controller:MechanicalVentilation object with the same ventilation rates as in the DOAS system.
The report for "Controller:OutdoorAir" shows the two system have same Minimum Outdoor Air Flow Rate. However, the report "Minimum Outdoor Air During Occupied Hours" shows a 84% reduction in outdoor air.
Have I meet the requirements of Appendix G3.1.2.6 for ventilation?
--Vinay Dev
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