Reply
 
Thread Tools Search this Thread Display Modes
 
Old 02-13-2007, 10:07 PM   #1
Rivet Master
Commercial Member
 
Silver Threads's Avatar
 
2000 25' Excella
Kingston , Tennessee
Join Date: Aug 2006
Posts: 905
Images: 23
Pilot Light

Was wondering if anyone else has had the problem of keeping there heater pilot light lit? We can light the furnace and it will heat up the trailer, then when it kicks off, the pilot light goes off to. My husband blew out the lines but it didnt help. It helped all the other appliances, but not the heater. Any ideas?
Thank you!
__________________

__________________
John & Tammy Adams
Silver Threads Custom RV Curtains
2000 Airstream Excella | AIR 15902
https://www.etsy.com/your/listings
Silver Threads is offline   Reply With Quote
Old 02-13-2007, 11:05 PM   #2
Rivet Master
 
Lumatic's Avatar

 
1971 25' Tradewind
1993 34' Excella
Currently Looking...
Estancia , New Mexico
Join Date: Feb 2005
Posts: 6,642
Images: 16
Blog Entries: 1
First I am no expert in this area and others out there undoubtably know more than me.

It could be multiple causes. A bad regulator on the tanks. dirty pilot orifice or bad thermocuple is what I would shoot for first. The water column pressure on the regulator should be about 11 inches or the pilot flame can float off. Try cleaning the pilot orifice with brake cleaner but don't poke anything into it.

If you have an NT22 furnace, as I have in my Tradewind, there is an old recall because the crossover tube between the blower and combustion chamber falls apart and you can be pumping carbon monoxide into the trailer.

My experience in finding someone to service a furnace of this vintage is no one will touch it because of liability. Sorry, I'm in the same boat.
__________________

__________________
Sail on silver girl. Sail on by. Your time has come to shine.
Lumatic is offline   Reply With Quote
Old 02-13-2007, 11:09 PM   #3
Rivet Master
Commercial Member
 
Silver Threads's Avatar
 
2000 25' Excella
Kingston , Tennessee
Join Date: Aug 2006
Posts: 905
Images: 23
Thanks, I will tell him to try it, it sure cant hurt. We bought the propane/ co2 detector, it hasnt went off yet, so i guess that is a good sign.
__________________
John & Tammy Adams
Silver Threads Custom RV Curtains
2000 Airstream Excella | AIR 15902
https://www.etsy.com/your/listings
Silver Threads is offline   Reply With Quote
Old 02-14-2007, 05:24 AM   #4
Rivet Master
 
TomW's Avatar
 
1967 26' Overlander
Huntsville , Alabama
Join Date: Dec 2003
Posts: 2,918
Images: 2
Tammy,

I had the exact issue you describe. The problem ended up being a partially clogged pilot light jet. The jet is located at the end of the gas line near the pilot light itself. In my case, the furnace had to be removed to gain access to it.

As I recall, the jet had two small orifi instead of one big one. Soaking in solvent before blowing the jet out with shop air was all it took to fix the problem.

Tom
TomW is offline   Reply With Quote
Old 02-14-2007, 05:45 AM   #5
Rivet Master
Commercial Member
 
lewster's Avatar
 
Vintage Kin Owner
Naples, FL , Hood River, OR
Join Date: Dec 2005
Posts: 7,282
Good Call!

Quote:
Originally Posted by Marshall
First I am no expert in this area and others out there undoubtably know more than me.

It could be multiple causes. A bad regulator on the tanks. dirty pilot orifice or bad thermocuple is what I would shoot for first. The water column pressure on the regulator should be about 11 inches or the pilot flame can float off. Try cleaning the pilot orifice with brake cleaner but don't poke anything into it.

If you have an NT22 furnace, as I have in my Tradewind, there is an old recall because the crossover tube between the blower and combustion chamber falls apart and you can be pumping carbon monoxide into the trailer.

My experience in finding someone to service a furnace of this vintage is no one will touch it because of liability. Sorry, I'm in the same boat.
It's like you took the words right out of my mouth. Just remember that you should never put anything thru any gas orifice opening other than solvent, compressed air and maybe some dental floss! Anything else will distort the precision-drilled opening and cause problems witthh the flame shape.
__________________
Lew Farber...ABYC Certified Master Marine Electrician...RVIA Certified Master Tech ...AM Solar Authorized Installation Center...AIRSTREAM Solar & Electrical Specialist...Micro Air 'Easy Start' Sales and Installations
lewster is offline   Reply With Quote
Old 02-14-2007, 03:15 PM   #6
Rivet Master
Commercial Member
 
Silver Threads's Avatar
 
2000 25' Excella
Kingston , Tennessee
Join Date: Aug 2006
Posts: 905
Images: 23
So, will I need to take the furnace out? It looks as though I can get the front cover off without taking it out. Will taking the cover off be sufficient for what I need to do?

Thanks,
John
__________________
John & Tammy Adams
Silver Threads Custom RV Curtains
2000 Airstream Excella | AIR 15902
https://www.etsy.com/your/listings
Silver Threads is offline   Reply With Quote
Old 02-14-2007, 03:19 PM   #7
Always Airstreaming!
 
rickandsandi's Avatar
 
2005 22' Safari
1960 24' Tradewind
Anytown , Connecticut
Join Date: Oct 2006
Posts: 3,114
Send a message via AIM to rickandsandi
Quote:
Originally Posted by Silver Threads
So, will I need to take the furnace out? It looks as though I can get the front cover off without taking it out. Will taking the cover off be sufficient for what I need to do?

Thanks,
John
Possibly John, which furnace do yo have?
__________________
J. Rick Cipot
Sandi Gould
NEU New England Unit
Airstream Life Magazine
Proud Member of WBCCI
WBCCI #3411
AIR #17099
2009 Silverado 2500HD
2004 22' Safari
1960 24' Tradewind
rickandsandi is offline   Reply With Quote
Old 02-14-2007, 03:38 PM   #8
Moderator dude
 
Action's Avatar

 
1966 26' Overlander
Phoenix , Arizona
Join Date: Apr 2002
Posts: 6,067
Images: 13
It depends on furnace location and type.

>>>>>>>>>>>>>>>>>>Action
__________________
1966 Mercury Park Lane 4 DR Breezeway 410 4V, C-6, 2.80 - Streamless.
1966 Lincoln 4 door Convertible 462 4V 1971 Ford LTD Convertible 429 4V Phoenix ~ Yeah it's hot however it's a dry heat!
Action is offline   Reply With Quote
Old 02-14-2007, 04:55 PM   #9
Rivet Master
Commercial Member
 
Silver Threads's Avatar
 
2000 25' Excella
Kingston , Tennessee
Join Date: Aug 2006
Posts: 905
Images: 23
Well, it is a Suburban furnace, cannot get to where I can see a model number on it. It is located right underneath the stove top at the end of the counter. I can lift what seems to be a front cover off of it, but I have to remove a sliding panel from in front of it first. Gotta get ready for church now though, so that will have to come tom.

Thanks,
John
Attached Thumbnails
Click image for larger version

Name:	furnace1.jpg
Views:	90
Size:	79.6 KB
ID:	32351   Click image for larger version

Name:	furnace2.jpg
Views:	90
Size:	119.8 KB
ID:	32352  

__________________
John & Tammy Adams
Silver Threads Custom RV Curtains
2000 Airstream Excella | AIR 15902
https://www.etsy.com/your/listings
Silver Threads is offline   Reply With Quote
Old 02-14-2007, 05:50 PM   #10
Rivet Master
Airstream Dealer
 
Inland RV Center, In's Avatar
 
Corona , California
Join Date: Feb 2002
Posts: 16,499
Images: 1
Quote:
Originally Posted by Silver Threads
Was wondering if anyone else has had the problem of keeping there heater pilot light lit? We can light the furnace and it will heat up the trailer, then when it kicks off, the pilot light goes off to. My husband blew out the lines but it didnt help. It helped all the other appliances, but not the heater. Any ideas?
Thank you!
You have two problems.

1. More than likely, the LPG pressure has dropped, It should be between 11 and 13 inches of water column pressure, preferably 12.5 inches.

2. Periodically, the furnace must be remove and taken apart, to clean out the dirt and sand that it has sucked into the combustion chamber. The combustion chamber is very small. When you reduce it's volume, however slight, then the furnace will light and run just fine. BUT when the furnace shuts down, it will "suck" the pilot light out. That is exactly how you have described the operation.

There is no short cut to correct the problem.

You cannot blow out the dirt with air.

The proper fix is;

1. Remove the furnace.
2. Remove the burner log from the combustion chamber. You will usually find it partially clogged up as well. You can clean the slots with a hack saw blade.
3. Tap the combustion chamber with a hammer. That will loosen other dirt and rust.
4. Since the combustion chamber is like a sideways "S" you must tilt the combustion chamber side to side, which allows the dirt and rust to move from one chamber to the next, and finally out through the hole where the burner log was located.
5. Dump the dirt out on some paper.
6. Have someone stand by you, to give you "smelling salts" when you faint when you see how much foreign material will fall out.
7. Check the gasket on the blower assembly as well as the gasket between the burner log and combustion chamber. If more than 10 years old or so, they will need replacement.
8. RV Furnaces should be removed and cleaned every 4 to 7 years, maximum, depending on the frequency of use and the area that it was used in.
9. You can almost bet your last dime, that if your furnace has been used and not taken apart and cleaned within the above time frame, that you will dump out at least one or two "cupfuls" of foreign material.
10. That reduces the cubic volume of the combustion chamber enough, so that the pilot light will be sucked out, everytime the furnace shuts down.

Again, trying to blow out the dirt with air will "NOT" correct the problem. That could also cause some damage to the combustion chamber.

Many repairs can and do have short cuts.

This repair does not have a short cut.

Remember, no short cuts when dealing with an explosive material, such as LPG.

If you don't feel qualified to do the repair, take the trailer or furnace to a shop that you can trust. The qualifying test for that shop is have them tell you the proper way to clean a RV furnace. If they tell you anything other than the above, move on to another dealer.

Please post the results you find when you disassemble your furnace.

Others I am sure would like to also know what you found.

Andy
__________________
Inland RV Center, In is offline   Reply With Quote
Old 02-14-2007, 07:54 PM   #11
Rivet Master
 
Lumatic's Avatar

 
1971 25' Tradewind
1993 34' Excella
Currently Looking...
Estancia , New Mexico
Join Date: Feb 2005
Posts: 6,642
Images: 16
Blog Entries: 1
Ofifi?

So orifii is to orifice as hippopotami is to to hippopotomus? Or did you just make that up Tom?

Hey Andy,
If you got your internet eyes on. As far as I know parts for those old Suburbans are no longer officially available. Where can I get the gasket material you were talking about?

On my 71 Suburban NT22 you don't have to pull the furnace cabinet. Take off the front cover (you may have to cut an access hole in the shelf above to get at the clip. Then remove one screw holding the furnace proper to the
metal cabinet and voila the whole guts slides out on a track. Of course you have not forgotten to disconnect the gas line and the screws on the inlet/outlet vent on the outside of the trailer, right?
__________________
Sail on silver girl. Sail on by. Your time has come to shine.
Lumatic is offline   Reply With Quote
Old 02-14-2007, 08:07 PM   #12
Rivet Master
Commercial Member
 
Silver Threads's Avatar
 
2000 25' Excella
Kingston , Tennessee
Join Date: Aug 2006
Posts: 905
Images: 23
Thanks Andy, I will let you know how it goes. Sounds like a lot of work ahead of me!!
__________________
John & Tammy Adams
Silver Threads Custom RV Curtains
2000 Airstream Excella | AIR 15902
https://www.etsy.com/your/listings
Silver Threads is offline   Reply With Quote
Old 02-15-2007, 12:12 PM   #13
Rivet Master
Airstream Dealer
 
Inland RV Center, In's Avatar
 
Corona , California
Join Date: Feb 2002
Posts: 16,499
Images: 1
Quote:
Originally Posted by Silver Threads
Thanks Andy, I will let you know how it goes. Sounds like a lot of work ahead of me!!
Anything worth doing, should be done the correct way, at least to most owners.

That is especially true when dealing with a possible life threatening device such as a furnace.

Taking short cuts, rarely pays dividends, especially with an Airstream.

Andy
__________________
Inland RV Center, In is offline   Reply With Quote
Old 02-15-2007, 12:17 PM   #14
Rivet Master
Airstream Dealer
 
Inland RV Center, In's Avatar
 
Corona , California
Join Date: Feb 2002
Posts: 16,499
Images: 1
Quote:
Originally Posted by Marshall
So orifii is to orifice as hippopotami is to to hippopotomus? Or did you just make that up Tom?

Hey Andy,
If you got your internet eyes on. As far as I know parts for those old Suburbans are no longer officially available. Where can I get the gasket material you were talking about?

On my 71 Suburban NT22 you don't have to pull the furnace cabinet. Take off the front cover (you may have to cut an access hole in the shelf above to get at the clip. Then remove one screw holding the furnace proper to the
metal cabinet and voila the whole guts slides out on a track. Of course you have not forgotten to disconnect the gas line and the screws on the inlet/outlet vent on the outside of the trailer, right?
We have what is still available, which is two of the three that you will need.

The third one is for the blower assembly. You can make that gasket yourself using gasket material found at most any auto parts store.

However, do not use that gasket for the burner log or electrode, as the heat will ruin it in short order.

Andy
__________________

__________________
Inland RV Center, In is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Outlet under sink, night light LI Pets Electrical - Systems, Generators, Batteries & Solar 5 09-24-2006 06:25 PM
Pilot light in Frig niftypkg Refrigerators 9 04-10-2005 01:04 PM
Ref pilot Dbraw Refrigerators 2 08-27-2002 05:43 PM
Furnace won't light /stay lit Don Furnaces, Heaters, Fireplaces & Air Conditioning 9 06-29-2002 04:37 AM
Clearance light wiring Bob Evans Lights - Interior & Exterior 6 05-27-2002 12:03 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 12:59 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.