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Pellet Ash question

Post in 'The Pellet Mill - Pellet and Multifuel Stoves' started by pakrazee, Oct 2, 2008.

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  1. pakrazee

    pakrazee Member

    Joined:
    Aug 15, 2008
    Messages:
    26
    Loc:
    NE PA
    Hi All,

    Newbie here with a question about the pellet ash that forms as your burning. I installed a new Englander 25-PDVC and have burned 2 bags so far over the course of a few weeks, just turning it on for a few hours in the AM to get rid of the chill in the house cause its been hot during the day. My question is the ash seems to clump together on the burn pot. It is burned all the way thru, just in a clump.

    The first bag of pellets came from Agway, and the second bag was Nature's heat by Pennington. I read the reviews about Penningtons after I bought a ton, so I figured I would use up the ton of Natures' Heat first while its not super cold out. I dont believe this happened from the Agway pellets, but its been weeks because of the weather.

    Any way is it normal for the ash to clump together?

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  2. rap69ri

    rap69ri New Member

    Joined:
    Feb 23, 2008
    Messages:
    734
    Loc:
    Middle of RI
    Is the clump hard or powdery?

    When running on lower settings the fuel feed rate and the low burn air need to be adjusted to burn different brand pellets cleanly. Calling Englander can help you get your settings set properly for low setting burns.
  3. 90durham

    90durham New Member

    Joined:
    Jul 18, 2008
    Messages:
    53
    Loc:
    Southeast Ontario
    Seeing the same thing with my Enviro but only with the one brand of pellets I have, the other burns like a torch and leaves nothing.
    From what I have seen I get liner buildup with the one brand no matter how long it burns and may have to do with unburnt fuel on shutdown as we are only running in the evening.
  4. nailed_nailer

    nailed_nailer Minister of Fire

    Joined:
    Oct 29, 2007
    Messages:
    823
    Loc:
    Cape Cod, Ma
    Hard saying not seeing it. But, what it sounds like to me is what is called a clinker. Or the beginning of the formation of the clinker.

    A clinker is what forms on the burn pot liner during a normal burn. On my Enviro I clean it off every time I clean the stove. Usually about every 3 days when running 24/7. This is considered normal and is part of the "joys" of heating by pellet.

    I use a 5 in 1 tool (any hardware store) to chip and scrape the burn pot liner clean. It only takes a minute. Usually a few cleaving blows with the tool will break it free and then it scrapes clean. On my liner I chip/scrape the front, back, and bottom of the inside. Making sure the air holes are all cleaned out.

    There is some thoughts out there that hardwood pellets have less clinker formation. I haven't noticed a difference. The clinker forms no matter what I burn.

    Good Luck,

    ---Nailer---
  5. pakrazee

    pakrazee Member

    Joined:
    Aug 15, 2008
    Messages:
    26
    Loc:
    NE PA
    yes, they are clinkers. I called Englander tech support and they had me increase the airflow. It seems a little better but I am still getting clinkers. I really think its the pellets......
  6. lecomte38

    lecomte38 Feeling the Heat

    Joined:
    Jun 6, 2008
    Messages:
    249
    Loc:
    Central Mass
    I am getting the same thing out of my Harman insert burning Barefoot prem pellets. These "clinkers" are clumps about 3/4" thick and 1-3" in diameter. They eventually get pushed up and out of the burn pot with the bottom feed auger. If you touch them they disintegrate (completely burned material). Would adjusting the feed rate cure this?
  7. pakrazee

    pakrazee Member

    Joined:
    Aug 15, 2008
    Messages:
    26
    Loc:
    NE PA
    I'm not sure about the feed rate, but adding more air seemed to help a little
  8. crausch

    crausch New Member

    Joined:
    Aug 26, 2008
    Messages:
    747
    Loc:
    Littlestown, PA
    Here is a snippet from the WD Pellet website. They mention that varying minerals in the pellets can cause the clinkering.

    BTW, their site is a very informative resource.
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