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Re: replacing old with new
Are the heaters rated at the same voltage, if so just connect the white to one heater wires and the black to the other heater wire..Does the white wire have a tape around it. If it does that indicates that it is a 120 volt cuircuit and not a neutral, which means you have a 240 volt supply. Make sure your heater is 240 vac.
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You are on the right track, you can hook the same 4 wires to the new thermostat without the jumper you had on the old thermostat. The jumper wire that is on the new thermostat can stay with no problems. Just connect the wires to the same terminals on the new one and your good to go!
On most applications for heating the red and white wires are used,however I would check what wires are connected to terminals on old thermostat. These connectons should be labled with initial of wire color,such as R,W,G,Y or Rc. If your green wire is hooked to R or whatever just hook new thermostat up like the old one and you should be ok. Hope this helps. Thanks.
Hello. The red and the black are the hot wires. Therefore, connect one of your conductors to the red and the other conductor to the black. Use wirenuts. The bare ground wire should be solidly attached to the new unit's green wire using a wire nut.
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if ur are replacing the heater and it was originally 220/240 ur wiring should b ok but to b sure trace the line wire back to breaker panel and look at breaker the white and the black should b hooked up to separate breakers if the white is hooked up to a ground bar usually on the inside side of the panel and the black hooked up to breaker ur line is 110/120 and will cause problems when hooked up. if the lines r 220/240 than red can hook up to white and black to black
Go down to your heater and find the thermostat wires. there should only be 2 wires connected, One will be connected to R and the other to W match them to RH and W on the thermostat. The jumper will not matter.
your wiring is all wrong. for a 240 heater a 20/20 tandem breaker will not work with a 240 heater. you need a 20 amp two pole breaker. the two wires at the heater need to be connected to the line. you probably have two black wires at the heater. one connects to the white romex which should be taped black, and the other romex black connects to the other black wire. at the panel one white goes to one side of the breaker and the black to the other. the bare ground goes to the neutral bar.
You can be assured that the element is 240 volt. The fan motor is also rated at 240 volt. the wires you have black - black are the connections you make to the line. Use a 12/2 with ground. Use a double pole 20 breaker in your panelbox. The green wire is the equipment ground - connect this to the bare wire from the 12/2. On the 12/2 cable - there will be two colors, one black and one white. Wrap a couple of turns of black tape on the white wire both at the heater location and on the white in the panelbox. connect the 12/2 to your 2 pole breaker, the black wire and the taped white to the breaker.