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Old 12-16-2009, 05:38 AM   #31
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Comfortmaker ignition issues


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Originally Posted by DARRELL_ICKT View Post
The burner box is the reference.
Did you have the burner box cover off, when you checked manifold pressure. if not. You had a bad reading.

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Old 12-16-2009, 07:07 PM   #32
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Comfortmaker ignition issues


I recalibrated with the cover off. I still couldn't get the pilot gas flow to respond when I changed the pilot adjustment screw. Today I replaced the "SmartValve". Calibrated to 10" wc manifold pressure, fired it up and I have the same syptom. Too much yellow flame wallowing around the pilot gas ignitor. I pulled the pilot assembly and made sure the pilot gas tube connection at the ignitor/sensor bracket was tight.
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Old 12-16-2009, 07:40 PM   #33
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Comfortmaker ignition issues


Is the yellow flame just the pilot or the main burners? If the pilot did someone try and clean the orfice and maby enlarg it or even loos the orfice?
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Old 12-16-2009, 08:15 PM   #34
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Comfortmaker ignition issues


I smell a a poser.
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Old 12-16-2009, 08:18 PM   #35
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Comfortmaker ignition issues


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Originally Posted by DARRELL_ICKT View Post
I recalibrated with the cover off. I still couldn't get the pilot gas flow to respond when I changed the pilot adjustment screw. Today I replaced the "SmartValve". Calibrated to 10" wc manifold pressure, fired it up and I have the same syptom. Too much yellow flame wallowing around the pilot gas ignitor. I pulled the pilot assembly and made sure the pilot gas tube connection at the ignitor/sensor bracket was tight.

So suddenly the yellow flame has moved from the main burner to the pilot?
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Old 12-16-2009, 09:10 PM   #36
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Comfortmaker ignition issues


I guess we need some pics, "photographic proof" of the patient.
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Old 12-16-2009, 09:32 PM   #37
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Comfortmaker ignition issues


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I guess we need some pics, "photographic proof" of the patient.
Hey Yuri!

Should we be thinking the "T" word
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Old 12-16-2009, 09:34 PM   #38
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Comfortmaker ignition issues


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When I start the furnace, the inducer fan starts, the igniter heats and when there is ignition, the right flame nozzle is nice and blue, but the center and left nozzle is an ugly, rolling yellow flame.
Thats from your first post. Now you say after the new valve you have the same symptom. But now its at the pilot.

Pics, or a video would be nice.
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Old 12-17-2009, 03:34 AM   #39
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Comfortmaker ignition issues


If it was doing that the first time I would suspect you had put in the Natural Gas orifice.

Or you reamed out the pilot orifice.

Or you are pulling my leg.
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Old 12-17-2009, 06:54 AM   #40
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Comfortmaker ignition issues


I sat down to 'fess up on the fix for my furnace, and I read all this stuff about "poser" and nonsense. I only got on this chat to get help for my furnace problem. The pilot orifice was missing from my pilot assembly. I only woke up to that when an hvac freind and I were kicking ideas around as to why I couldn't get rid of this syptom. During the summer I had removed the ignitor/flame sensor because there was a crack in the ignitor. I removed the pilot gas tube and only took the ignitor/sensor assembly to the hvac store to match replacement part. The pilot orifice must have fallen out, I did not know it. I put an orifice in last night and all is good, nice blue flame, nice heat. I was not messing with anybody and I want to say thank you for the constructive input, it was MUCH appreciated. I hope the documentation of this saga can help someone else who finds themself in a similar situation. MERRY CHRISTMAS.
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Old 12-17-2009, 10:16 AM   #41
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Comfortmaker ignition issues


And you never noticed the whole time you were doing measurements and such?

I found your descriptions full of competent statements and detail oriented.

Because of this,I don't think you are the type to over look something that obvious as a pilot flame with out an orifice.

The devil is in the details, no? That is why I think you were just pranking the pros here.

Look at the time line: Yesterday 8:07pm you report the yellow flame.
Must have been there from your opening post since the furnace was lighting off. The other pros ask for pictures.

Today: 7:45 you claim to have obtained a new orifice.

From WHERE? Wholesalers are closed, even if you were on the wst coast time zone..

That does not sound suspicious to you?
One other thing that is troublesome about your "Lost pilot orifice" claim is this: With the much larger Nat Gas orifice or NO ORIFICE AT ALL in place the pilot flame would be too big and and not hot enough to allow reliable burner lite off. Further, the pilot sensor would soot over so quickly that it would coat the sensor and prevent main burner ignition. And yet you claim to have the furnace running albeit with a two bad burners.

What was the clincher was when the other pros became skeptical and you pronounced the furnace fixed.

We have seen this as the typical MO of a prankster, that is when the pros get suspicious of the pranking post and the OP says he found the problem.

He knows he's been found out.

Maybe that is not the case here, but if it looks and quacks like a duck....
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Last edited by hvaclover; 12-17-2009 at 11:33 AM.
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Old 12-17-2009, 02:21 PM   #42
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Comfortmaker ignition issues


hvaclover...You can think (susoect) what you want...I KNOW what I know.
I am detail oriented because I am an Instrument/Electrical Tech in the Paper Industry, I am not a heating guy. I just wanted to avoid spending too much on repairs by doing this myself. I guess with this much suspiction, the next time I chat I'll have to create a new login...too bad for me. I still appreciate the constructive input.
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Old 12-17-2009, 02:32 PM   #43
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Comfortmaker ignition issues


Don't make and use a second name.
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Old 12-17-2009, 05:16 PM   #44
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Comfortmaker ignition issues


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hvaclover...You can think (susoect) what you want...I KNOW what I know.
I am detail oriented because I am an Instrument/Electrical Tech in the Paper Industry, I am not a heating guy. I just wanted to avoid spending too much on repairs by doing this myself. I guess with this much suspiction, the next time I chat I'll have to create a new login...too bad for me. I still appreciate the constructive input.

And because you are detail oriented says you would not have missed the yellow pilot flame or where you got an orifice after hours.

Too many Pros who resent DIY sites log in on phony names post incredibly ridiculous symptoms just for kicks and then lead the site Pros on three pages of contradictory explanations of bogus furnace problems.

I don't know who you are but you have posted here several times using different names. I recognize your writing style.
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Old 12-17-2009, 07:48 PM   #45
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Comfortmaker ignition issues


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Originally Posted by hvaclover View Post
And because you are detail oriented says you would not have missed the yellow pilot flame or where you got an orifice after hours.

Too many Pros who resent DIY sites log in on phony names post incredibly ridiculous symptoms just for kicks and then lead the site Pros on three pages of contradictory explanations of bogus furnace problems.

I don't know who you are but you have posted here several times using different names. I recognize your writing style.
Good evening gentlemen. I have suddenly been compelled to join this post to respond.

Interestingly enough, I worked through the problem with him over days of frustration. The account of events is accurate and we both overlooked the pilot flame while watching the main burners receive excess fuel flow due to the lack of the pilot orifice. The giveaway should have been the excess gas at ignition, but we were assuming that this was a gas valve or gas pressure regulation issue. The service manual does not show the pilot orifice and we never suspected it. I apologize for being so daft.

While I appreciate that you have all responded in an attempt to help and that this post may serve to help someone who has a pilot gas orifice problem in the future, I do not appreciate an attack because of a symptom overlooked. My friend is also a first time user and is not feeling compelled to try again after these accusations. I will not look forward to seeking help in the future if I am anticipating a personal attack as well.

Thanks.


Last edited by Srsci; 12-17-2009 at 07:52 PM.
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