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Old 01-07-2012, 08:47 AM   #1
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Old Miller trailer furnace flame seems too high


I just bought an older trailer with an oil fired Miller furnace.There is no markings on the burner but I am pretty sure it is a Wayne.I have worked on these furnace over the years (i am definatly no tech) changing tips,adjusting electrodes,bleeding,filters that sort of stuff so i am fimiliar with the anatomy of a miller furnace.
The tip was clogged when i got it (the tip and all around it was full of soot pretty bad) so I pulled nozzle apart cleaned it,put new tip in,cleaned and adjusted electrodes,cleaned or replaced all filters,drained out oil tank and put 50 gallons of fresh kerosene. It fires up with and runs good but when I open the flap and check the flame the tips of the flame are a to the top of the hole.All the other trailer furnaces I've worked you could just see the tips of the flame.
I was wondering if this seems right.What else should I check.

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Old 01-07-2012, 09:40 AM   #2
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Old Miller trailer furnace flame seems too high


sounds like the gph/size of the nozzle is too large. too much oil.

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Old 01-07-2012, 07:04 PM   #3
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Old Miller trailer furnace flame seems too high


I to think it could be a nozzle problem.It could be the angle is wrong,it could be the pressure is off.If the nozzle was pluged you could have a dirty screen.
The air could be off.If you installed this old unit I assume the combustion air fitting is in good shape.
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Old 01-07-2012, 10:17 PM   #4
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Old Miller trailer furnace flame seems too high


Thanks for the help. It was the wrong tip size.
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Old 01-07-2012, 11:12 PM   #5
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Old Miller trailer furnace flame seems too high


Good to know that hot torch thinggy is all better now.
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