I have purchased 2 electric baseboard heaters (220). I have read the directions on the thermostat that show the 2, hot wires coming from the breaker box to go directly to the 2 red wires on the thermostat. There is also 2 black wires coming from the thermostat that are supposed to hook up directly to the baseboard heater, one on each end. When I followed these directions the circut breaker keeps kicking off. Any idea as to what I did wrong?