I have a number of Honeywell LineVoltPRO 8000 Thermostats, Programmable, 7-day, Electric Heat, 1H (TL8230A1003). They have 2 red and 2 black wires. This is for radiant ceiling heat.
The wiring diagram is shown in the top pic.
I also have the thermostat (electric) box that has ONE black, ONE white, and the copper ground. The current (old) T-stat (TWO wire) is connected like this:
Line in Black to Red on T-stat
Line in White capped to White of Load (Does NOT touch T-stat)
T-Stat Black to Black of Load
Copper to ground
I have 240V showing on two Load wires when T-stat is on HIGH. I have 0 V showing when T-stat is on LOWEST setting.
Now...the question: CAN I wire the new Honeywells into the box using the existing wiring? If so, what configurations can I use? (Which wire goes to which wire and so on). I would REALLY like to get rid of the spst configuration for the safety of the dpst configuration if possible.