I'm still poking about in my garage rafters trying to get my DC ducting in. I'm at my 2nd Wye branch and I've got a question about duct routing. I'd prefer to go with the arrangement in the pic, but the reversing direction aspect of this makes me wonder if there's an inherent problem with this.
My alternative is to put about a 5-6' straight run before this Wye, then run about 3' to the left before putting a 90 in to bring another duct run back to the general area that the 2nd 45 degree elbow is now pointing. Right now I'd need about 5' of ducting/fittings after the 2nd 45, the other method would take about an extra 8' or so. Regardless of which method the LH branch uses, the straight part of the Wye will end in a straight ahead run about 5 ft from where I've currently stopped, then take a 90 elbow to bring it down out of my rafters. The near side of the Wye is running back to the DC intake. Both methods reverse direction but the 2nd one would do it with a longer run but maybe the transition is better? This LH branch is one that wont get primary use. My main use down-drop will be the straight ahead one and the LH for the occasions where I've got 2 machines I want to have wheeled out and hooked up to the DC at the same time. Any thoughts?