MIN AIR SCH

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When trying to set up a space to have economizer mode using the schedule, i
can't seem to make it work.

When i enter the value 0.001 as requested by the help files, to enable
economizer mode and let the unit go to 0% during the unoccupied periods, it
doesn't work.

When i enter -999 as requested by the help files to allow my stated OA ratio
to rule (33% in this case) it doesn't allow it to go to 100% OA and
therefore i get unmet hours.

If i set the value to 1 at all times, then i get 100% OA during the summer,
which is not advised.

Any help is appreciated,

--
Rob Hudson

rdh4176's picture
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Joined: 2011-02-14
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You might have already done it, did you set OA control to something other
than fixed - also economizer is just at the system level, not space level.

R B's picture
R B
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Joined: 2011-09-30
Reputation: 4

Space level inputs will override system level inputs here. May want to check
those.

NYCCTgreen's picture
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Joined: 2011-09-30
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For OA, that is.

NYCCTgreen's picture
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Joined: 2011-09-30
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I have entered no space inputs for OA, everything has been entered at System
level. I have a dual temperature economizer set up.

Rob

rdh4176's picture
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Joined: 2011-02-14
Reputation: 0

When i set the high temperature limit to 65 deg, this caused the economizer
to operate as it is supposed to.

Hope this helps for future economizer issues.

Rob

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Joined: 2011-02-14
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