OP here again:
Thanks for the replies:
1). As to the breaker, the roofers never touched them, they just took
out the old fan and fastened it to the rafters, never disconnected
power. When I did the rewire, I turned off all the breakers for the
house, except for the dryer, electric range and well pump, since I had
no idea which of the breakers controlled the fan. Then I flipped them
back on....of course, in the meantime, the responsible breaker could
have failed, but I hate to willy-nilly start replacing them, as I have
a "split buss" panel and there is NO main disconnect to the panel,
meaning "all hot, all the time."
2) According to the fan manual the roofers left me, the fan is 120.
3) Reacting to the "cheesy thermostat" idea, they did note in the GAF
install/owners manual for this new fan that the thermostat was only
"approximately" accurate....so I think I'll wait until the weather
warms, probably next week and see if it kicks on. If it does, fine.
If not, I guess I'll go pull it apart, try the direct connect and work
from that result (VOM, continuity tester, etal).
Only problem is I have an 1980's era analog VOM that I still don't
really understand how to operate.....