We just had two new Daikin Fits installed with matching variable-speed 2-stage gas furnaces. A 4-ton unit services the first floor, which is roughly 2,000 square feet, and a 3-ton unit services the second floor, which is about 1,800 square feet. I'm trying to configure the units so we get even cooling throughout the house, but I'm having trouble because our family room is 19' x 21' x 20' high with an open loft adjacent to it. As a result, a lot of cool air drops down into the space below and satisfies the first-floor thermostat prematurely, which causes the study, kitchen, morning room, master bedroom, master bath, and sitting room to all run about 3 degrees hotter than the family room and downstairs hallway.
I Googled two-story settings and the general rule is to set the first floor 2 degrees warmer than the second, but I'm sure that doesn't take into account the large open spaces that we have. Right now all of the vents are wide open, so so I can probably do some tweaking there. I've attached a copy of our builder floor plan for both floors. Our home has almost all of the options listed, except those I've crossed out.
Any help and/or advice on setting this up is greatly appreciated.
I Googled two-story settings and the general rule is to set the first floor 2 degrees warmer than the second, but I'm sure that doesn't take into account the large open spaces that we have. Right now all of the vents are wide open, so so I can probably do some tweaking there. I've attached a copy of our builder floor plan for both floors. Our home has almost all of the options listed, except those I've crossed out.
Any help and/or advice on setting this up is greatly appreciated.
source https://hvac-talk.com/vbb/threads/2228695-Setting-up-a-2-Zone-System?goto=newpost
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