Can some one confirm or correct me in the rules for backup heat operation on a CTK03 communicating thermostat. It appears have identical operating descriptions to a Honeywell IAQ unit.
The system is a 2 stage heat pump with 1 stage of resistance backup and is defined that way in the ISU menus and that is confirmed from the System Status display.
Primary heat/cool is set to comfort as is the backup heat.
The backup heat lockout is set to 35* and the compressor lockout is set to 10*
---As I understand it, above 35* the aux heat will never cycle on except for defrost, even if the room temp is raised by a large amount, correct?
----Below 35*, During recovery from a setback, if I use the Intelligent Recovery mode, the Aux heat will not be used unless the system is not making expected progress?? (What ever Honeywell defines as "expected progress")
----Below 35*, during a manual temp change of lets say 4*, the compressor will stage and only use the aux heat if it is not going to reach temperature in a reasonable time??
Now a different setup.
The Aux heat differential is changed from comfort and set to 3*, for example, and the upstage timer is set to a very high number, like 4 hours.
--- If I am below 35* and the system is Intelligently recovering from a 5* setback, the aux will only come on if we are not making expected progress, correct?
--- What happens if a user bumps up the temperature by 6* ? Will the strips come on immediately or will it first try to recover using the heatpump if possible?
I have read the setup manual but am not completely clear from those descriptions exactly what it should/would be doing.