HARMAN BURN POT MOD ?

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pollywog

Member
Apr 12, 2011
31
southern, NH
My brother just bought a used, 1 year, P43. The guy at the dealer told him to fill in the first couple of rows of holes to make it burn better. Anyone ever hear of this?
 
I don't own a Harman,but from reading this forum I believe the burn pots with the four extra holes were causing problems with burning through the auger feed weldment which from what I've read is a big job.If it was me I would pull the burn pot weld the four holes closest to the auger shut and grind smooth.
 
I'd investigate this further before doing that.. I thought the problem was with the older models..
 
I own a P38, an older model. It runs great, no reason to do something like that.

Tom C.
 
mighty-putty2.jpg
 
My brother just bought a used, 1 year, P43. The guy at the dealer told him to fill in the first couple of rows of holes to make it burn better. Anyone ever hear of this?

I've owned a P-38 and now own a P-43. I would not do that. Both my stoves burn fine without filling any burnpot holes.
 
If you have a row of 4 or 5 holes right in front of the auger remove the burn pot and have the holes welded or brazed. Newer stoves do NOT have the holes. My 5 year old accentra insert burned the auger tio off and there was always a build up inside the end of the tube.

Harman tried these holes in an attempt to make the stoves burn better. At high it worked well but at low fire it caused problems with the auger and tube
 
If you have a row of 4 or 5 holes right in front of the auger remove the burn pot and have the holes welded or brazed. Newer stoves do NOT have the holes. My 5 year old accentra insert burned the auger tio off and there was always a build up inside the end of the tube.

Harman tried these holes in an attempt to make the stoves burn better. At high it worked well but at low fire it caused problems with the auger and tube


What year is your Accentra? I've read about this but was wondering when they changed the pot.
 
WTF?

Eric
 
WTF?

Eric
this idea resurfaces every year. I have tied (and failed) to put an end to this notion. The lower holes have never, and will never be shown to have any connection to auger tip deformation and/or gummy stove syndrome. please dont mod your burnpot. make note of the date and time Eric, this will come up again soon enough I'm sure.
 
I know, this is almost as bad as people trying to add duct work and a blower to a free standing pellet stove. I have also see where people have drilled extra holes in a Harman burnpot. I am sorry people but there are engineers that worked long and hard on pellet stoves to get them to where they are now. Billy Joe Jim Bob the backyard engineer is not going to make world peace by using a grinder, sawzall, and welder on a stove.

Eric
 
Then why would they re engineer the burn pot?The newer stoves don't have those holes anymore!Maybe instead on being a ass realize engineers make mistakes!Even the ones that work for Harman!
 
Easy way to void warranty on stove, if it applies.
 
Then why would they re engineer the burn pot?The newer stoves don't have those holes anymore!Maybe instead on being a ass realize engineers make mistakes!Even the ones that work for Harman!

well, the lower holes didn't improve anything in the "real world" applications, so they got rid of them. Some things work out well in a lab, and not so well in the various other installations around the world. Change isn't always for the better, even with good intentions. Lots of older stoves don't have the holes, and there's literally thousands of stoves out there that do have the lower holes...no biggie. The concern isn't wether there are holes or not, its the idea that the holes are some kind of problem that needs to be preemptively address, which they are not. Those lower holes are usually the ones that clog up with ash and clinker first anyways, so they basically seal themselves up on their own. No worries.
 
The P43 was not around at that time.

Eric
 
Hello.

My Accentra FS works fine with these holes (3 rows of very thin holes), room-temp/auto 7/24. IMHO they do need cleaning, especialy with low settings.

By the way, I used old non-filed drills for cleaning, but mine are metrics ones. What are the holes' sizes, please ?

Thanks.

Au revoir.
 
My brother just bought a used, 1 year, P43. The guy at the dealer told him to fill in the first couple of rows of holes to make it burn better. Anyone ever hear of this?
I don't own a Harman,but from reading this forum I believe the burn pots with the four extra holes were causing problems with burning through the auger feed weldment which from what I've read is a big job.If it was me I would pull the burn pot weld the four holes closest to the auger shut and grind smooth.

Six of this half a dozen of the other.

This would the ticket w/out much effort + can easily be reversed if need be.

Try this if you feel like it maybe the right way to go by using stainless steel pop rivets (sight unseen for fitment) the worst that will happen is you will have to remove them ?

Drill baby drill!
 
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Hello,

This morning (now, 2 pm here), in the french importer's showroom, all* the stoves had the thin holes.





* FS : Accentra, Advance, XXV, no insert but can be ordered...
 
Just a pic of mine... with 13 thin holes, down in the pot :

trous.jpg
 
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