I wanted to replace an old 2-pole electric baseboard thermostat with a new one. However, when I pulled out the thermostat I was confused by the way it is wired (see photo - both red wires connected to each other, and both black wires connected to each other). It appears as if it is wired as a 1-pole thermostat would be. Can anyone explain why it might be wired this way? I don't want to hook up my new digital thermostat the same way if it may damage it. Note that in the photo I had already removed the ground connection.