Quote:
Originally Posted by Machfun
We recently purchased a 3791RD. I see these vents in the ceiling (see attached photo) but I can't figure out what they are for. The heat comes out of floor registers and the A/C only comes out at the one unit above the fireplace. Anyone know what these are for?
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Close the ‘dump’ register on the A/C. That will run the air into the ductwork.
Mark