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Old 10-22-2012, 10:25 PM   #1
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not able to adjust pilot


I have replaced a honeyweel standing pilot gas valve in a modine unit heater. The pilot remains about 10 inches after I have turned the pilot adjusting screw. Anyone with any thoughts?

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Old 10-22-2012, 10:53 PM   #2
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not able to adjust pilot


Sounds like you lost the pilot orifice.

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Old 10-22-2012, 11:43 PM   #3
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not able to adjust pilot


I was thinking the same as Marty even before I read his comment.

Check the end of the pilot assembly. Should have brass fitting ..like small bolt head with an orifice hole in the center. If just hollow end with threads then orifice fitting is missing. Look in bottom of unit?
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Old 10-22-2012, 11:52 PM   #4
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not able to adjust pilot


Any chance you have a NG valve on a LP line? (But I'm going with the orfice answer).
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Old 10-23-2012, 12:07 AM   #5
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not able to adjust pilot


Did you disassemble the pilot assembly from the pilot tube in addition to replacing the gas valve? A little history would help!
Even without a pilot orifice, I don't see why you couldn't adjust the pilot flame down to nothing especially with a new valve, even though it would be a pretty soft flame.
Something sounds off here.
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Old 10-23-2012, 12:41 AM   #6
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not able to adjust pilot


I did change the pilot assembly. Didn't notice any piece coming off though I may have missed it. I tried 2 different new valves and the are both doing the same thing. 10 inch yellow flame. After trying 2 valves with the same result I began to wonder if the pilot assembly is the problem but I thought the pilot would still at least increase or decrease . Thank you for pointing me in the right direction. I will check it tomorow morning.
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Old 10-23-2012, 07:06 PM   #7
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not able to adjust pilot


orfice fall out, or someone tried cleaning with a 6 penny nail
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Old 10-26-2012, 11:19 PM   #8
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not able to adjust pilot


Thank you all... Orifice fell out just as you said... Problem solved

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