Question about Marley Electric Hydronic Baseboard Heater, 58" 240V/1250 Watts

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In the best solution text. you said to have branch lines from the thermostat to other heaters. i wired coming from the thermostat to heater and from heater to the next heater, their will be 3000 watts together all open living area so i have 2 in the front and 1 on the side and 1 500 watt in the bath.. so this is wrong? haven't hooked anything up yet but did run wire this way.

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Hello I can't see the difference if you made the connection at the thermostat or your way.It should be good.

Posted on Sep 17, 2010

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Thermostat Line Voltage How to Install or Replace


You either have a new line voltage thermostat or have to replace your old line voltage thermostat. In either case the process is much the same.

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  1. Make sure that all power is turned off at the breaker panel. Most heaters that use a line voltage thermostat usually use 240v current so the breaker will either be a double pole breaker or you will need to turn off two single pole breakers to kill all of the power.
  2. Check to see which wires are hooked to the breakers. In most cases it will be the red and black wires, but I have seen many times that the white and black wires were used. Often there is no red available when the white is used.
  3. Take out the two screws that hold the thermostat to the junction box. When you get the thermostat out make a note of which wires go to the heater (load) and which wires are coming from the breakers. (line)
  4. If you have a single pole thermostat installed one of the sets of wires may be wired straight through the box or have the line and load wires connected directly in the box. With a double pole t-stat you will have both sets of wires running through the t-stat.
  5. Remove the old thermostat and wire the new t-stat in the circuit with the load wires hooked to the load or heater and the line wires hooked to the wires coming from the breaker. Make sure to get a very good tight connection as resistance loads will heat up quickly if good contact is not made. This poor connection can and will start fires.
  6. Turn the power on and check the heater for heat output.
  7. Turn the power back off and carefully screw the thermostat to the junction box securely. Then you can reapply the power to the circuit.

Now you are up and running with a new line voltage thermostat installed.

http://www.fixya.com/support/r3894275-manual_honeywell_find_honeywell_manuals

http://www.fixya.com/support/r3623083-thermostat_wiring_terminal_designations

on Jan 16, 2010 | Heating & Cooling

1 Answer

Hello Fixya Guru ! I am in the process of installing several Marley PLF series 2000 watt/ 240 volt electric "Hydronic" baseboard heaters. I am using 10/3 bx with a 30amp breaker. To my...


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.

Charlie

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.

Jan 11, 2011 | Fahrenheat Electric Convector Baseboard...

2 Answers

I am trying to install a fahrenheat f2543 heater with a fta2a double pole thermostat. there is a 12/2 wire coming into where the heater is being installed. how do i connect the red and black to the white...


Hi, this is very easy for you to do.The 12/2 Romex wire coming in is the power which you know. What you do need to know, is the voltage coming in? Sometimes they will use 12/2 Romex with ground for 220, 240, operation. You need to know if the T-stat is Line voltage 220, or 240 volt. You have to have the same voltage for both for it to control. Reguardless of the voltage, lets say it is in the 220 and up range. You take one of the 12/2 wires, white or black and hook it to the black or red on the T-stat and the white to the other one, red or black. Thats it, you are done! If the T-stat is 2-pole I am sure it is a high, Line votage T-stat. Best of Luck,
Shastalaker7

Nov 09, 2009 | Fahrenheat Built-In Baseboard Thermostat...

1 Answer

How do I hook the wires up for a electric baseboard heater


this heater can usually be wired from either side. meaning your wiring can be brought through the wall inside of one side or the other.

the wiring you bring in to this unit needs to be 12g or larger.

it needs to be on a dedicated circuit. that means you cant splice into any other line. it needs to be for your baseboard heaters alone. that is code and wouldnt want to sleep in a house with baseboard heat that didnt have a dedicated circuit.

baseboard heat is most economical to run with 240v units. 120 is going to cost more to run.

you will need a thermostat either built into the unit or a thermostat unit mounted in the wall to run it.

dont mount the thermastat over the heater. I shouldnt have to explain why.

a 240 volt circuit run from your panel on a 20 amp breaker consists of 3 wires, a ground and a black and white.

in a 240v configuration both the black and white are hot and you must wrap some black tape around the white wire where it shows in your breaker panel and at the handy box in which you have installed the thermostat and then where it enters the heater. this re-designates the wire as a hot instaed of nuetral this gives you to black hots.

you hook the white and black wire to the line in side of the thermostat which should be the two red wires.then the two black load out wires of the thermastat run to your heater. hook your ground (green or bare) to the box if its metal and pig tail it to the ground screw on the thermastat, then out of that pigtail to the heater along with the two hot wires.

you will find a bare ground solid copper wire fixed to the inside connect your ground.

you will find two other wires they are both hots you will connect one of your hots to one of them and the other to the remaining.

what it looks like is an element sitting in the housing the housing is the baseboard and you have a hot wire running through a wire way to the other side and connecting to it and one hot stays on the side you brought the wires to.

in other words since you can wire it from either side you have to have a way to get the energy to one side or the other and they supply a way.

as long as this is labled as a 240 unit both wires are hot. take the covers off both ends you will notice the wire traveling from one side to the other. your goal is to have one hot connected at one end of the fillament and the other hot you brought in to the other end. the best way to hook up multiple heatrs is to have branch lines from the thermastat toeach heater, not to daisychain them one to the other becuase you will have voltage drop as a heater is using it before passing the voltage down the line leading to poorly functioning heaters








Mar 29, 2009 | Marley Electric Hydronic Baseboard Heater,...

1 Answer

Line voltage Tstat installation Dayton D-F79 elctric shop heater


If I understand your post correctly....You state that you are hooking up a 240v heater and towards the end you speak of removing jumpers...W2 terminals..ect. It sounds to me your trying to us a 24v low voltage thermostat instead of a Line voltage thermostat.That's what I'd take a look at.

Dec 16, 2008 | Dayton (3E379) Heater

1 Answer

Wiring for baseboard heater


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.

Dec 14, 2008 | Fahrenheat Electric Convector Baseboard...

1 Answer

Add line thermostat to fahrenheat space heater


Just disconnect the other thermostat. You can leave it there just disconnet the wires

Nov 30, 2008 | Marley Electric Hydronic Baseboard Heater,...

2 Answers

Wiring two heaters off the same 240amp power source


FIRST YOU MUST DASIEY CHAIN THE 12-2 FROM THE PANEL TO FIRST HEATER IN THE LINE AND THEN TO THE SECOND HEATER IN THE LINE, ENDS OF BOTH WIRES IN THE SAME END OF HEATER,BREAK ONE SIDE OF THE LINE THROUGH THE THERMOSTAT AND TO THE ELEMENT OF THE FIRST HEATER AND THE SAME FOR THE SECOND HEATER BUT IN THE FIRST HEATER YOU WIRE IN TH LINE THE 2-BLACK WIRES AND THE 2-WHITE WIRES WILL STAY CONNECTED WITH WIRE NUTS AND YOU WILL CONNECT THE THERMOSTAT WIRING UNDER THESE SAME WIRE NUTS AFTER YOU STRIP THE ENDS OF BOTH WIRES ENTERING AND EXITING THE FIRST HEATER TREAT EACH HEATER AS IF YOU WERE ONLY WIRING ONE HEATER ONLY DIFF 2-BLACK AND 2-WHITE WIRES STRIPED OUT AT FIRST HEATER IN LINE FROM PANEL TO ACCESS AND CONNECT FIRST HEATER ,BB HEAT 250 WATTS PER FT

Nov 11, 2008 | Electrical Supplies

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