Thermostat has two red wires two black wires. The baseboard has one red one black wire.
Baseboard Heater Thermostat Wiring Diagram
This Site Might Help You. RE: How to wire a thermostat to a 220 volt baseboard heater? Thermostat has two red wires two black wires. The baseboard has one red one black wire.
I'm not sure I understand how you're trying to hook this up. It sounds like you've got two pairs of black and white wires? Were these installed with the intention of supporting a 220 volt device? You really should be seeing a black and a red wire, and measuring 220 volts between them. Try measuring between the two black wires - you'll either get 220 volts, or nothing (if they're on the same leg). What connections are available at the heater, and how are they labeled?
Baseboard Heater Thermostat Wiring
That thermostat is a two pole switch. (It opens both lines). Just follow the color codes. Your incoming 'line` might be a two wire run, (Black, White, + Gnd.). In this case just treat that white as a 'Line' wire, (Red). It Should be marked, but sometimes they don't do it. Black, (Line) to Black, T (Stat). Black (T Stat), to Black (Heater). Same for the Reds. The T Stat. should be marked 'Line' 'Load' if it matters with that unit. Some Cautions: 1. Don't try to work it 'live'. 2. If the line wires are black white, be sure that you have a 240V. circuit. -(Two pole breaker). 3. Coil your 'pigtails' (connecting wires), so that the insulation doesn't contact the hot parts of the heater.
