Help with wiring. the thermostate has 2 red and 2 black. line from heater has 1-black 1-white + bare coper ground and supply has same. thermostate is a Marley md26 and base board is a farenheat electric/hydronic baseboard heater. all work at panel has been inspected and is good. i need to do this myself. have some experience with electrical. can some explain the wiring of both thermostat and and baseboard.
The Black Wires from the md26 are your load(the heater) and the red lines are your line(power). The lines are also paired up on the thermostat with a red and black on the left and are red and black on the right. In the actual heater connect the black to the black wire and the white to the white and connect the grounds. In the thermostat connect the black from the heater to left side black( remember there are pairs left(black, red) right (black, red) and the white to the right side black connect the black from your power to the left side red and the white from your power to the right side red. Should be ready to go.
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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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1st you will belucky if you actually have 240 v, most
homes are usually 220v. In youyr case you need to start at the breaker panel.
This is an example:
You have a Double Pole Single Throw breaker. Black
Wire is hot and goes into one side of breaker,if you havea red wire that goes into the other have of the
The white wire ties in the nuetral bar and the bare wire into the ground bus bar. At the unit you hook up the red and the black wire which will supply the 240
Volts, you could tie the white and the ground wires together into the grounding terminal
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
if its 240v your line in to the thermostat is two hots (black and white, white in 240 is no longer nuetral and must be marked as hot) and a green/bare ground from the panel, these usually connect to the reds on the double pole thermostat. the load out is usually two black wires which are then connected to the black and white wires of the baseboard unit.
The black and white wires should both go to the breaker. Not just the black wire. If you hook only the black wire to the breaker then you are only feeding the unit with 110 instead of 220. Both wires need to be hot.
I hope you are using a Line Voltage Thermostat!! First, make sure that the power feeding the thermostat is coming from a two pole breaker of the correct amperage (20 amp). If you are using 12-2 wire with ground then please mark the white wire with black tape at each end to identify it as a HOT power source and not a Neutral wire (which is a grounded lead). Do the same for the 12-2 wires feeding the baseboard heater from the Line Voltage Thermostat. The wires from the thermostat (One Black & one White w/black tape) will be wired to each one of the two wires (one Black & one Red or two Black wires) at the baseboard heater. It doesn't matter which wire from the thermostat is wired to which wire at the heater, just as long as there is one wire to one and one wire to the other.(eg. Black from stat to Black at heater/White w/blk. tape from stat to Red at heater OR Black from stat to Black at heater/White w/blk. tape from stat to OTHER Black at heater). I have seen baseboard heaters with two black wires or one black and one red wire. Hope this helps, but if you are confused then please have an experienced tech. do it for you.
First, is this a 120 VAC or 240 VAC heater? 120 VAC heater will usually have one Black & one White wire and 240 VAC heater will usually have two Black wires or one Black & one Red wire. If it is a 120 VAC heater then you need to supply the white wire at the heater with a neutral (white) wire from the breaker panel. If it is a 240 VAC heater then you need to verify that you have 240 VAC at the heater from Black lead to Red lead. If you are not sure about how to do this please have an experienced electrician look at it so you don't get electrocuted and/or burn up your new heater. Hope this helps!