In E+, How create an exhaust fan for toilet/bathroom ?

I would like to create an exhaust fan in Energy + for the toilet and bathroom. 45 m3/h I did something as below, Is it correct ? I am wondering because when I check the input output reference, they say that "For Natural and Exhaust ventilation, the conditions of the air entering the space are assumed to be equivalent to outside air conditions." Its the contrary of what I want. My exhaust fan takes the air inside and move it outside. More over it increases my cooling capacity

Someone can help me or give his opinion ?

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It all depends on the zoning. If the toilets are part of a larger zone that includes exterior openings, then the makeup air is likely to come from outdoors due to additional infiltration. In that case, ZoneVentilation is fine to use.

If the building is zoned so that the makeup air is coming from adjacent zone(s), then use ZoneMixing to move air from one zone to another. For the receiving zone (toilet), an equal amount of air is assumed to leave the zone without any additional input. For the supplying zone, make sure there is enough infiltration (or HVAC outdoor air) specified to make up for the air going to the toilet zone.

And it gets a little more complicated when modeling the HVAC system.