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I recently installed a new elec. baseboard heater with a wall thermostat in a new addition. i wired a 220 tstat. there were 2 red line wires on the tstat. there were 2 black load wires on the tstat. i put a hot line on each of the red lines (l1 l2). i on the black i wired on a white on one and a black on the other to the heater. i have power to the heater when the tstat is turned up and none when it is turned down. the problem is the heater doesn?t make heat. . can you help me. thanks GG

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When you checked across the black and white at the heater did you get 220v? If you do, then the heater is bad or the high limit is kicked out, check it out to see if it is open (no current will flow through it).

Posted on Nov 14, 2009

Testimonial: "Thanks! That worked. Turned out to be a bad heater. "

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No i didn't. I need instructions for wiring a


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How to wire 1 plf 1504d heater


I have the solution, finally after looking for 2 days.

First off, I couldn't quite put it all together based on what I was reading. I finally tracked down the Fahrenheat web site (www.fahrenheatpro.com). And called tech support (800) 452-4179.

To wire 2 BB units to 1 tstat.

1. Use #14 wire for 0-12 amps, #12 wire for 12.1 to 16 amps and #10 wire for 16.1 to 24 amps.

2. I have a 12/2 wire going from the tstat to BB#1 and another 12/2 wire going from BB1 to BB2.

3. Onthe left side of the heater, you will have 2 sets of black wires tied together with a nut (on right side it's 2 sets of Black/Red wires). You can use either side of the heater. For the purpose of explaining this, lets use the left side, 2 sets of black wires.

4. Undo one of the sets of black wires (it doesn't matter witch), the other set will be left alone.

5. Take the black wire coming from the tstat and tie it into one of the black wires from the heater and the black wire going to the second BB unit. So you will have those 3 wires tied together with a nut at the 1st BB unit.

6. Take the white wire coming from the tstat and tie it into the other black wire from the heater and the white wire going to the other BB heater. Again, you will have 3 wire tied together here.

7. At the second BB unit, tie the black wire coming from the 1st unit to one of the black wires in one of those 2 sets of black wires. Again, only undo 1 set of wires at the 2nd unit, leave the other one alone. Tie the white wire coming from the 1st unit to the other black wire.

8. Make sure ground wire in grounded at the tstat and at both BB units.

Hope this helps...... If I was less clear than I hoped, call tech support and they will walk you thru it....

Kevin.

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Wiring on thermostat tl7235a1003


OK, here's my guess at this...I hope someone more knowledgable will confirm or correct me.

A line voltage thermostat switches the power to the baseboard heater. In other words, it's just like a wall light switch except it activates and deactivates based on the temperature.

I think your old model CT62 was wired exactly like a light switch. The hot wire to the light is broken then run to the wall switch and then back to the light so there's no neutral wire at a light switch box. This worked fine for your CT62 because it did not need power, it only needed to switch it.

The new model TL7235A1003 requires electrical power because it's programmable so you need both a hot wire and neutral wire at it's installed location. In addition you also need 2 wires leading to the baseboard heater so the thermostat can supply it's power.

I believe L1-L2 are to be connected to the hot/neutral wires, and the Load wires go to the baseboard heater.

If I am correct you will not be able to use this thermostat without some re-wiring.

Good luck.

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