Min OA schedule

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I have been struggling with this for a while without much success.
I have a schedule for the Min-Air-Schedule under the outdoor air tab for
systems. No other outdoor air keyword anywhere (no cfm/person in zones
or economizer, or min outside air). When I look at the hourly report,
the OA to supply ratio does not match the schedule. Also, OA cfm as a
ratio of design supply cfm, or design OA cfm - does not match the
schedule. What does this keyword do? The system is a dual duct variable
speed.

Any pointers appreciated.
-Rohini

Brahme, Rohini            UTRC's picture
Joined: 2011-09-30
Reputation: 0

To answer my own question -

The hourly reports match the min OA-schedule when the min OA control
method is set at Fraction of Hourly Flow. Did not realize that he
Min-Air-Sch does not override the Min-OA control method.

-Rohini

Brahme, Rohini            UTRC's picture
Joined: 2011-09-30
Reputation: 0