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fahrenheat PLF Hydronic heater / Marley T1 and T2 thermostat installation

fahrenheat PLF Hydronic heater / Marley T1 and T2 thermostat installation


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Old 02-22-14, 08:33 PM
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fahrenheat PLF Hydronic heater / Marley T1 and T2 thermostat installation

Hello All, I purchased a Fahrenheit hydronic baseboard heat along with a Marley T1 / T2 thermostat that installs at one end of the baseboard heat.
The question that I have is how to properly wire this unit. When I purchased the unit I also purchased 12/3 wire and a 20 amp double pole breaker.
The thermostat has 2 red 2 black and a ground wire
The baseboard heat has 1 red 1 black and a ground wire.
The wiring diagram on the thermostat shows L1 and L2 as black wires and the reds going to the heat. If I understand this correctly I should take my black from the power in to black of thermostat.....the red power to the other black on the thermostat.
The red wire of the thermostat to red wire to the red wire of the heater
The other red wire to the black wire of the heater
Wire nut all of the ground wires together including the white wire from the 10/3
Is this correct?
 
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Old 02-22-14, 08:39 PM
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For a 30 amp 240 volt circuit you use 10-2 not 10-3 but since it is a 20 amp breaker the correct wire is actually 12-2. If you can't return the 10-3 for the correct wire just cap the whites on both ends.
 
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Old 02-22-14, 09:26 PM
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The T-stat should have the wires labeled L1, L2 for incoming power and T1 and T2 for the outgoing power.
 
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Old 02-23-14, 06:04 AM
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I found a L1 marking on the black wire side of the thermostat but not L2 marking.....
The wiring diagram for the thermostat shows L1 and L2 as black ......I am assuming that I am to connect the black and red from my 10/3 power line in to these two black wires of the thermostat???
 
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Old 02-23-14, 08:19 AM
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Did you get a single or double pole t-stat?
 
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Old 02-23-14, 03:10 PM
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I purchased a double pole T-stat.
I changed the wire from 10/3 to 10/2. On the L1 and L2 side of the T-stat I connected the power black and White to the black wires of T-Stat.
I then connected the red wires of the T-stat to the Red and black of the heating element.
Connected the 20 2 pole breaker in the box with the black and white (marked with black tape to signify Hot)
I checked the system and all seems to be good!!
Thanks for the replies....BTW I ended calling an electrician for advice....
 
 

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