Something still does not make sense. If the heating run was on due to the circulator running/zone valve open due to the thermostat "on" then it stands to reason there should be heat in that run as well. Hot water pipes don't condensate and there would be heat in the run making the house warmer. Just thinking out loud...so to speak
Some systems are set up that the circ runs 24/7. the stat can only turn the burner on. And then only if the outdoor reset allows the burner to run.
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