Here is the simple distribution system for Sunnybrook Farm. Minuteman f11 aluminum fans in the wall. 55cfm. I believe this is a 25Watt fan, which is more than it should be. We are undercutting doors 3/4", and they will be open most of the time.
I have heard a someone testing directional air flow distribution using smoke, who found that blowing the air from the cool space to the warm space at ground level, works the best. We are sucking air at the ceiling because of the ability to work the airflow with closed doors and because we don't have transoms to allow air to flow through at the ceiling. The cold air will be pushed back out under the doorways
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| south den with fan above door |
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| fan wiring |
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| in north bed, fan above door |
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