Installing two new 240v baseboard heaters. Thermostat is 3 wire configuration: One black Line input, One black load output, and a Red in the middle, onto which both red line and red load are connected. Before installing the heaters I checked the voltages on the wires coming out of the wall when the stat is NOT calling for heat. The red load wire is reading 120v to the ground (as expected with the aforementioned 3-wire stat configuration). The black load wire is reading about 23v. Is this a normal amount attributable to induced voltage, or is that indicating a problem? When I measure from red load to black load (again, the thermostat is NOT calling for heat), I'm getting 63v. Does this indicate a problem? If so, what, and how do I troubleshoot it? If I left it like this and installed the heaters, it seems like they'd be running at 63v 24/7, which at a minimum seems like kind of a waste of electricity, if not a hazard of some kind of the heater itself. Input and insights from some experts would be much appreciated. Thanks!!