1. Probably 2. You shouldnt need to change the wiring, however, after reading the installation manual for this thermostat, it seems unnessesarily complicated and I would install a third party thermostat that isnt so overcomplicated. http://esmithair.com/wp-content/uploads/2015/03/CCBAC01-B-Installation.pdf 'Sometimes' you have to use a specific thermostat, but usually the control module in the air handler does the thinking, the thermostat just tells it to heat or cool and when to turn on or off.

Looks like my tiller is a Forward rotating tines tiller; and I was going to deep on first pass. I found a few threads once I identified the problem. Here's one: http://www.mytractorforum.com/61-troy-bilt-forum/99862-out-control-tiller.html I just need to start much shallower, and make more passes until the ground is pretty broken up.

I am so loving all the dog and cat stories. It is apparent that our animals enrich our lives in many ways. Here is another story about another Granddog. My younger daughter had 2 Beagles. While visiting at her house for a weekend some years ago, I stayed with the Beagles while Daughter went to a Doctors appointment. The dogs normal supper time is 4:00 she had told me, but Molly the oldest would try to tell me at about 3:30 that it is time to eat. Don't fall for her lies and just ignore her till it is 4 o'clock, she said. Sure enough about 3:30 Molly appeared in front of me as I was reading in a comfy chair. She did a little wiggle dance and then went to her empty bowl. I continued to read without looking up. Then Molly came back and did the wiggle dance and added 2 fast spinning circles for emphasis and then back to her empty bowl again. I continued reading. Molly then came back, repeated all the other moves and next grabbed my pant leg and shook my leg briskly. Now I burst out laughing. I couldn't ignore her any longer

Best bet is to call tech support so they can walk you through it. I don't install their systems, I am a Jandy dealer, but I have clients with their systems and Pentair's tech support has been very helpful.