New install of xL16i (two-stage) AC with XV95 NatGas Furnace and T803 Tstat.
My observation is that Comfort-R applies if AC is single-stage. The furnace install manual shows an "Enhanced" mode profile where blower runs at a reduced "humidity" level (I think it was for 7.5 minutes) at 80% speed before going to 100% to satisfy cooing demand. Its not clear that this applies only to 1-stage outdoor unit. So I watched my new unit.
With my xL16i I noticed on a call for cool, the first stage of AC is engaged and ran at 80% blower for 10 minutes at which time 2nd stage engaged and blower went to 100%. Note that Tstat setting is 3CPH for 1st stage which gives 10 min ON and 10 min OFF.
I called Trane Tstat hotline and they said that is how two-stage works that based on 1st stage CPH setting, that after the ten minutes if more cooling needed, 2nd stage engaged. Now since this setup ran 80% for 10 minutes vs. Comfort-R 7.5 minutes, does that imply better humidity removal?? I guess the complication is that two-stage compressor is also running at 75-80% which changes the SHR and hence humidity removal.
If I was to change cooling CPH to 2, that would be 15 min ON / 15 min OFF, would this improve humidity removal due to longer run times in 1st stage, while resulting is larger temp swings???
Trying to understand how this 2-stage/Varaible speed/etc all plays together.