Okay, I'm answering part of my own question. It seems a baseboard heater thermostat works at line voltage (in this case 240v) rather than the small small volatage of other heating sytem thermostats. So it seems to me, the thermostat in the case of a baseboard just acts as a switch and is wired preety much the same way you would wire a switch to a light. That is current goes in one side of the stat, out the other, and then travels on to the baseboard heater. Do I have this right?