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Old 12-08-2009, 06:31 PM   #1
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Economizer


I need a little clarification. I know that the economizer is placed on the return duct to draw in outside air. Why is this necessary? My best guess is that if a building is completely sealed off you would need outside air so that people can breath. Is that the case or are there other purposes for an economizer?

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Old 12-08-2009, 07:04 PM   #2
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Economizer


An economizer. is to provide free cooling during those times of the year that the outdoor air is cool enough. But the building heat load still requires heat.

Usually a min opening can be set for a constant fresh air. As required by building codes. To dilute/remove CO2 build up.

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