Re: marley electric 3ft. basebord ,wiring w/thermostat
If your baseboard heater is rated at 220 VAC and you have wired it to a 120 VAC source then the heater will only produce about 1/4 of its rated output wattage. So, if you have a 2000 W / 240 V heater it will only produce about 500 W at 120 V. You may want to have an experienced technician wire it for you if you are not sure what you are doing. Please be careful and smart when dealing with electricity!!
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You need to take a meter and see if you have 220 volts between the black and white. if you do have 220 then hook white wire to the red on the on the thermostat and the black to the black wire on the thermostat. on the other side of the thermostat hook the red and black to the red and black to the heater
You are correct that these heaters use a two-wire 240 volt supply, and the neutral is not needed.
2000 watts = 240 volt x Amps ==> Amps = 8.3 amps
30 amps x .8 safety factor = 24 amps
24 amps / 8.3 amps = 2.9 heaters per 30 amp breaker (3 heaters should be okay)
More info, pls let me know.
P.S. Where does the 2880-watt number come from ?
P.P.S. There has to be a ground bus-bar in the panel -- if it's a main panel (not a sub-panel) the ground buss and the neutral buss are connected in the panel. Could you clarify what you have in the panel.
My PLF504 detonated this morning (11-25-2010). It worked fine for two years then BANG. Room was lit by flame coming from center (left to right) of unit. I wrote Marley asking them to honor the 10 year heater element warranty. Also, no burnt wires at thermostat connection, no dust bunnies on the fins. Source of fire was the fluid filled encapsulated heater core. Thank God, circuit breaker tripped and wall was tiled.
From whatI have seen on base board heaters if I recall correctly, the thermostat may be sepperate. Usually thermostats on these have a round knob. 1 line goes to this and the other side of the thermostat goes to 1 end of th element and the othe line attaches to the other side of the element. Its possible you have the element wired in directky if it came without a thermostat and without instructions it may till be connected directly. You should have an L1 and L2 connection and hope there is a wire diagram on the cover.
THE reason these basebord heaters used to come without a thermostat is because they are (OR WERE)set up to add on additional heaters comming right on down the wall. At the last one you could tie in and get a correct rated thermostat installed in the center of the series.
Return to LOWES and ask them to remove the instructions and copy them for you from another like model. Or have them contact the manufacturer and request they fax a copy of instructions with a diagram. Also ask if the heater comes with a thermostat. It may stoill be sepperate in another kit.
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.