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Thread: Trunkline opinion
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07-28-2008, 07:50 PM #14
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well then...I guess I am right back where I started before I ever posted anything:confused
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07-28-2008, 09:07 PM #15
All of the duct work the air travels through is part of the info needed to tell what the FR should be.
Your return duct is carrying the air too. So it is part of the restriction to air flow, and has to be included.
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07-28-2008, 09:10 PM #16
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http://www.acca.org/Files/?id=66 - some guidance in getting your ductwork system right in accordance to Manual D standards.


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