Rewiring oil fired furnace

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Old 10-22-15, 05:02 PM
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Rewiring oil fired furnace

I picked up a used oil furnace and would like to put it in my garage. Problem is some one removed the controllers . I bought a honeywell fan control but not sure on how to wire it . The burner has the usual box with the Black,Orange and white wire. My question is am i best to use the fan control on high voltage or break the jumper and use low voltage. I can't seem to figure out what protects the fire box from over heating . I have searched a few days now and can not find just a simple wiring diagram that truly explains how it works and how to wire it ? any help ?
 
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Old 10-22-15, 05:41 PM
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What type of furnace are you dealing with, mdl# etc. would help,is there a wiring diagram anywhere on the unit?
Geo
 
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Old 10-22-15, 06:45 PM
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Welcome to the forums.

If you can't find a model number for your furnace..... maybe a picture or two. http://www.doityourself.com/forum/el...-pictures.html

Also... what model Honeywell fan controller did you get ?
 
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Old 10-22-15, 07:21 PM
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I think he means the fan limit control.Only jumper I can think of.
 
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Old 10-22-15, 07:44 PM
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this is the burner i bought for it , the fan limit switch is a honeywell L4064 B 2236 . I plan to use a 2 wire low voltage thermostat like the old spring type
 
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Old 10-22-15, 07:54 PM
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Seen only a handful using the low voltage. Most 120 v. Good wire diagrams if you google the control pdf.
 
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Old 10-22-15, 08:01 PM
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this is what i found when i search the fan control number. i don't find putting the number 3 in a triangle to be a big help to me. should i connect it to the black, orange , white ? or just wire nut them all together in a triangle shape ?
 
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Old 10-22-15, 08:09 PM
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The triangle three is the 120v supply to the oil burner. If the furnace overheats the limit opens that 120v line to the burner.

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Old 10-22-15, 08:13 PM
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so use this diagram and leave the jumper in place ?
 
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Old 10-22-15, 08:33 PM
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Yes..... that is the exact wiring diagram you need.
 
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Old 10-22-15, 08:35 PM
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ok thanks. I looked at it but couldn't figure out how it shut down the burner if it got to hot. and the wording underneeth lead me to believe it was for low voltage
 
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Old 10-22-15, 08:36 PM
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It could be used for low voltage use if you opened the jumper.
 
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Old 10-22-15, 08:39 PM
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wouldn't that change how you have to wire it ?
 
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Old 10-22-15, 08:45 PM
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Sure.... you would have 120v on one side and 24v on the other side. If you had a fan control center you would use dual voltages. You'd use the 120v for the burner and the 24v for blower control.
 
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Old 10-22-15, 08:51 PM
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ok I'm going to try and hook it up tomorrow . wish me luck and thank you for your help . ill let you know how it works
 
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Old 10-22-15, 08:57 PM
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Good luck..... we'll be waiting for the good news.
 
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Old 10-23-15, 09:43 AM
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worked perfectly. I even disconnected the blower to be be sure it shut the burner down and it did. thank you much for all the help .
 
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Old 10-23-15, 10:01 AM
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There will be heat this winter.
 
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