40 year old GE gun fired oil furnace and proper nozzle

ombre

Ex ---Very ex retired former oil furnace repairman here. Haven't really looked at one as far as repair since the early 80's.

Daughter has an oil furnace made in 1965 by GE. (at least that is when her house was built, and it is the original furnace)

Would like to replace the nozzle. Furnace is rated at .75 gph on plate. Could pull the nozzle and use stampings on the nozzle that is in there to match, but do not trust that it is original or proper one----over 40 years all kinds of wierd changouts can happen as you all know.

As far as whether is hollow cone, proper angle etc. Only thing for sure that I know is that the furnace requires a .75 gph nozzle.

Would like to install the correct nozzle. Correct angle and correct cone.

Model # for this GE furnace is 21LTO84B1B. Serial #, if that helps any is------702939617

Any help on this appreciated.

Thanks

kevin coppinger_4

did you try...

www.oiltechtalk.com lots of good oil guys on the discussion part of the website.kpc

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Ken_8

Ken,

The nozzle spray pattern is not variable nor should you replace the nozzle. It is nothing like a typical nozzle since it is air (not pressure) atomizing!

There is no angle, spray pattern or "end-cone" per se.

If you pull the nozzle you will see the rate stamped on it's side but like nothing you've ever seen - unless of course someone switched it to a Beckett or Carlin replacement burner?

Dan has kindly taken the entire GE serviceman's manual and placed it in the "Library" listed to the top left of the site. Look under GE. The whole shebang is there!

If I can help, I'd be honored. I am the self-proclaimed expert on anything GE.

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ombre

You completely lost me there. Of course nozzles need to be replaced occasionally. Of course there are different spray angles to nozzles. And of course there are hollow cone and solid cone nozzles.


Unless I have completely forgotten what I learned in tech school 35 years ago-----

ombre

Will defer to a GE expert though.---

Possibly the burner has been changed. Although the only noticeable change that I see is the primary control---obviously newer. Also uses a cad cell for a "safety". Is that a giveaway that the burner was replaced from the original 1965 GE at one time? I don't think they used cad cells back then. Just stack switches.

Maybe I will just replace the nozzle with exactly what is already in there. It did work pretty well for many years as far as I know. Rumbles just a bit strangely now---may be partially plugged and spraying a little off angle.

Bill Nye_2

GE

Ken, The original burner GE had an air atomizing nozzle. At the top of the page on the left hand side click on Library and then look up GE.

You probably have a conversion burner, it may have a 13" air tube, and will be Carlin 100CRD or a Beckett AF. In that case the Carlin might like a 60°SS and the Beckett a 70°solid . It has been over 10 years since I've worked on one though.

eleft_4

eleft_4

Ken_8

Everything you learned

is inapplicable with this boiler.

It is not your typical nozzle. In fact on GE's it's called a regulator!

Since it runs at ~14 p.s.i., erosion is NOT much of a factor.

There is no spray angle. There is no hollow or solid patterns. There is no end cone.

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Ken_8

If Bill's correct,

you no longer have a G.E. compressor and nozzle and instead have a Carlin or Beckett conversion burner.

If this is the case, that information should have been mentioned up front. It may be a GE boiler; but it ain't no GE burner. If this is so, the nozzle should and can be replaced and I have the correct nozzle characteristics and setup for it as well.

Need to know the brand and model of the burner. The boiler plate just below the front door should provide the original GE boiler data plate info. If you can provide both the boiler model and burner make and model, we got you covered.



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Firedragon_4

You haven't said where this is

but in New England and LI one of the most popular conversion burners for GE was the ABC/Sunray. Like the RWB and CCT burners it uses a replaceable nozzle.

All low pressure burners, GE, Winklers, Williams Oil-O-Matics used non-replaceable regulators as Ken said, FACT!

ombre

Was just up there over Thanksgiving. Should have looked for a plate indicating what type of replacement burner it has. But didn't get around to it and too late now---at least not 'till Christmas, when I will drive back up there again.

Happily winter, such as we have it in Florida, doesn't really get serious until January.

I didn't really notice any other real obvious plate on the burner in past times looking at it. Only plate I saw easily was the original GE plate on the furnace---gave BTU's and gph.

Assuming this has a replacement burner, which I am sure now that it does------where would that identifying plate be exactly so I can look for it better over Christmas?

This was originally an 84,000 BTU GE gun fired warm air furnace.------- .75 gph

ombre

Looking at my notes from when I was up there I realize I noticed and wrote down more than I thought I did. I do have a bunch of notes written on a scrap piece of paper from when I was up there.

Here is one of the notes. Maybe it will help. I was trying to write down as much info on any plate anywhere I could find. No longer remember where I found this plate---but here is what was on it--

Oil Burner #-------CN571179

Also said on that plate--no heavier than #2 fuel oil. (well duh!!!)

Ken D.

GE

Ken, Is this a warm air furnace or a boiler? GE did make warm air furnaces once upon a time. In which case the nozzle would be dependent on the burner. The only GE boilers I ever ran across was the old LA series that were built in the 30's, 40's, and 50's. They were low pressure and the nozzles did not need to be replaced as Ken already said.You probably can't get them anymore anyway as they were OEM and obsolete.

ombre

Putting this back up to the top because I would really like to order a new nozzle for my daughter and install it over Christmas. No way right now to pull the old nozzle and check stampings for the (hopefully--assume there hasn't been a mismatch installed over the years) correct nozzle since I live about 200 miles away and won't get back up there until Christmas.

Anyway--replacement burner # on that original 1965 GE warm air gun fired furnace is ----------CN571179.

Any info on the proper nozzle for that burner appreciated. I know it has to be a .75 gph nozzle but the rest of it I would like to know===spray angle and type of cone.----so I can order one in the meantime.

ombre

Also I would like to have my daughter's furnace tested and diagnosed by an oil pro near Jacksonville, Florida. I could do it myself ---although it has been over 25 years for me, with a little help from my old friend the NOFI manual, but I no longer have any testing equipment-----as far as draft, smoke, CO2, CO, stack temp, etc.

Unfortunately, using your search for a pro-------I can find nobody within 100 miles of Jacksonville. Hard to believe, but seems to be true.

Any help appreciated on this.

Any good oil tech in the Jacksonville area of Florida want to make a few bucks?

Ken D.

GE

Is this a hot water boiler of a warm air furnace? GE made warm air furnaces at one time. The nozzle is dependent on the burner. Many took an 80 degree hollow noz. Check nameplate for the gph. The old GE LA series boilers were low pressure units made in the 30's, 40's, and 50's. The nozzles were so large that nothing ever blocked them. They are obsolete and I'm sure no longer available. You could try a Sid Harvey's location. If none are near you, they are headquartered in Valley Stream, NY (Long Island). They handled many GE parts. I do not know if they still do. Hope this helps.

ombre

Just bringing this up to the top to see if any new suggestions.------

Really ----------nobody servicing gun fired oil furnaces in the Jacksonville Florida area knows their **** from a hole in the ground?

ombre

It is a warm air furnace, not a boiler type.

Only thing I know for sure is that it is a 1965 GE gun fired oil furnace and that the gph is .75 and that the burner has most certainly been replaced in the last 40 years.

I do have a # for the replacement burner.

It is #CN571179

ombre

I really would like a good tech from the Jacksonville area of Florida to check out this furnace, make proper tests for CO, CO2, smoke, stack temperature, draft, primary air adjustment, etc etc.

I don't mind paying for that since I no longer have any test equipment and don't know where to get some. My daughter doesn't mind paying for a qualified oil furnace tech. And it is she who would probably pay for it.

But it does seem like there is nobody around Jacksonville, qualified in that area, who wants to make a few good honest bucks.

ombre

80 degree hollow cone is probably right------jack leg mechanic speaking here---but is most probably correct or close enough for government work.

I never encountered a solid cone nozzle in South Florida when I did service work.

Think I will order one and install it over Christmas.

Ken D.

GE

Wow, Good help is hard to find. I remember that some old GE furnaces came with an Automatic Burner Corp. (ABC) burner as well as some Waynes. Some Waynes prefer a solid pattern.