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I'm trying to simulate an air loop in Openstudio 2.7 that recirculate indoor air, but use outdoor air only when economiser cycle is ON.

The HVAC system provides air for offices (picture 1).

The problem is the air loop provides continuously an outdoor air flow rate (picture 3) whenever economizer cycle is not always ON (picture 2).

Is there a way to set outdoor air flow rate to zero when economizer is not ON?

Picture 1 shows the actual air loop.

Picture 2 shows the air economizer status ON.

Picture 3 shows the outdoor air mass flow rate for the air loop.

I'm trying to simulate an air loop in Openstudio 2.7 that recirculate indoor air, but use outdoor air only when economiser cycle is ON.

The HVAC system provides air for offices (picture 1).

The problem is the air loop provides continuously an outdoor air flow rate (picture 3) whenever economizer cycle is not always ON (picture 2).

Is there a way to set outdoor air flow rate to zero when economizer is not ON?

Picture 4 provides information about ControllerOutdoorAir.

• Maximum flow rate allowed has been hard sized
• No schedule for Fraction for outdoor air was applied.

Picture 1 shows the actual air loop.

Picture 2 shows the air economizer status ON.

Picture 3 shows the outdoor air mass flow rate for the air loop.

I'm trying to simulate an air loop in Openstudio 2.7 that recirculate indoor air, but use outdoor air only when economiser cycle economizer is ON.

The HVAC system provides air for offices (picture 1).

The problem is the air loop provides continuously an outdoor air flow rate (picture 3) whenever economizer cycle is not always ON (picture 2).

Is there a way to set outdoor air flow rate to zero when economizer is not ON?

Picture 4 provides information about ControllerOutdoorAir.

• Maximum flow rate allowed has been hard sized
• No schedule for Fraction for outdoor air was applied.

Picture 1 shows the actual air loop.

Picture 2 shows the air economizer status ON.

Picture 3 shows the outdoor air mass flow rate for the air loop.

Picture 4 ControllerOutdoorAir parameters