Modeling zone air flows with DOAS system

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Hello eQUEST Users,

I have a scenario I'd like to run by the group and see how others would
model this situation.

- DOAS system serves lobby area (1,200 CFM outside air)
- Lobby area is also served by split system heat pump (1,000 CFM)
- Next to the lobby are restrooms which have 600 CFM of exhaust each for
total of 1,200 CFM exhaust air which is returned back to the DOAS, which
has an energy recovery wheel.

I'm wondering if the outside air supply of 1,200 CFM should be applied to
the lobby or to the restrooms?

Any clarifications would be appreciated.

Thank you,

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