Trying To Set up Honeywell Thermostat

Recently moved into a new build that has non-wifi Honeywell thermostats (TH4110) and want to upgrade to wifi on the cheap. A friend gave me his TH6220 wifi Honeywell thermostats when he switched to Nest. The TH6 thermostats fit on the TH4 mounts but when I tried to go through the set up, it asked for tech specs that I'm not familiar with. (Things like O/B on Heat? O/B on Cool? Compressor stages? Something about a reversing valve, I think?) I could try to post the prompts here, but each choice leads to different choices. I'm concerned that a mistake made in the set up could damage the equipment. I've switched out thermostats before, but was never asked for anything like this.

Is there a place that would have this info? I'm not averse to hiring someone to set this up, but haven't made any calls yet.

I have two thermostats (one upstairs, one down) on one Trane XR heat pump. Model no is 4TWR40481000AC. I'm in Phoenix.

Thanks!

source https://hvac-talk.com/vbb/showthread.php?2226218-Trying-To-Set-up-Honeywell-Thermostat&goto=newpost