A couple of note here....
First of all, I was greatly assisted in understanding this piece of equipment by the HVAC course I took a few year back; I felt something was missing.
My next concern was an unused flex connector on the machine, near which was the 110 lable. The machine itself was marked 208-230/240.
Opening the machine up, I saw that the 110 was split off the 208 coming in. That threw up a red flag, as the plug was a three prong 250v/20a twist-loc.
I learned- finally- the time I wired a 220 GFI that the third wire is a ground, and not a neutral. So- where did the 110 get it's neutral?
There was no deliberate bond to the case, as I first suspected (such as seen in ranges and dryers). Only when I opened the plug did I find the "solution."
The 110 that exited through the flex needs to go to a remote condenser on the roof, where it only powers a small (3 amp) fan.
