[big sky hvac]

I have recently installed a honeywell rct 7600 stat to my multistage variable speed goodman furnace in 2 stage with adaptive intelligent recovery activated. It is the 2nd day of operation. Prior an old white rodgers stat was used in single stage using the furnace board to change over to 2nd stage heat after 10 minutes if not satisfied. I installed this with the hopes this honeywell with adaptive intelligent recovery enabled would increase the time of low stage heat and call upon 2nd stage only if needed since it is not based on time like the furnace board. I wish the furnace to run longer on low heat to make my colonial split feel more even and comfortable. This has been my experience observing the 2nd day of operation.

With adaptive intelligent recovery enabled the stat goes into high fire in setback modes with a 2 degree differential from existing temperature and runs approx. 12 minutes in high and goes down to low stage heat for 2 minutes. It also reached setback temperature 20 minutes prior to time. Since this is only the 2nd day of operation, does the stat logic need a week to learn and readjust? As is learns and readjusts my hopes are that it will fire in low stage first and then go to high stage ifatisfied. As it learns and adjust to house conditions will the time of setback temp time be closer to actual time since it is arriving at temperature 20 minutes early? As it adjusts will I get closer to actual setback time? In single stage stat set up by furnace board gave me 10 minutes in low state and was pretty comfortable. I was hoping the logic on the stat was more intuitive. Assuming the stat may self correct, how long will it take to learn and will it be capable of starting in low stage first and swithcing to high stage if not satisfied? It is my understanding adaptive intelligent recovery is supposed to be cost effective and slowly (not fast) bring the house up to set back temperature-. It any of the above is not possible, would it be better if I disabled adaptive intelligent recovery? Would this allow my furnace to fire in low stage first and longer on setback temperature?

I should note my observations when stat is running at setpoint it does begin in low stage heat first and usually stays there the entire time for about 10-12 minutes. This even happens when temperature is raised one degree higher. I am hoping this stat will self adjust, if not I may consider wiring it as a single stage and let the furnace board fire in 1st stage as timed for 10 minutes. Please advise. Honeywell is clueless on how this works. All they can tell me is the stat makes the decisions in 2 stage.

Thanks,

ritchkeys

I think you might be a little confused. The adaptive intelligent recovery has no control over the staging of the furnace. What it does is determine what time the furnace needs to come on to reach your desired setback at your desired time. It takes up to 2 weeks to determine how long it is taking your furnace to warm your house back up. The decision on which stage of heat is required is determined by how many degrees of setback you have. If you're setting your stat back 5* at night, the stat recognizes that you want it to be 5* warmer at 6am and it's going to skip 1st stage and go to 2nd stage to achieve that goal faster. If you only adjust your temp by 1*, the stat knows it doesn't need to go to 2nd stage to get there. Hopefully this helps sort out the questions you had.