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Digital Cat Probe

Post in 'The Hearth Room - Wood Stoves and Fireplaces' started by mellow, Feb 5, 2013.

  1. pgmr

    pgmr Feeling the Heat

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    On our Buck 80 (and the other models I would assume), the cat is indeed in the top front, but the smoke goes up vertically through the cat. The probe is on top of the cat (the downstream side) not inside a cell or through the cat.
    Last edited: Oct 17, 2013
    raybonz likes this.

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  2. mellow

    mellow Resident Stove Connoisseur

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    Interesting, if you get a chance take a picture of the cat housing for me.
  3. pgmr

    pgmr Feeling the Heat

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    http://www.hearth.com/talk/attachments/img_1887-jpg.72923/ is from a model 91, but it is similar to the 80. You are looking down on the cat and housing and seeing the flange that bolts to the top of the fire box.

    I looked at the manual online for your 52 Bay and page 13 describes two different cat probe ports:

    "The 52 Bay was designed to allow the owner to
    monitor the catalyst temperatures. A small port is
    located on the top of the stove, inside the unit. From
    that port, wires may be led out of the unit to a
    temperature monitoring device. Some Gemini models
    have this wiring already done. The port is positioned
    to allow for temperatures to be taken approximately 1”
    behind the right catalyst. The thermocouple and
    monitor should be compatible and should read
    temperatures to approximately 1800 degrees F.

    Front Mounted Catalytic Probe
    Locate screw above the door and to the left of the
    damper. Remove the screw and insert catalytic probe."
  4. Joful

    Joful Minister of Fire

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    That would be so nice! My cat probe hole is in the center of the back of the stove... the second most useless possible location for a probe hole. I'm forced to use an electronic probe, thanks to this. If I had a probe hole in the front, I'd be thrilled to use a simple mechanical probe.
  5. mellow

    mellow Resident Stove Connoisseur

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    Ok, had to call servicesales to get this sorted out as to why my stove did not have a top port. When Appalachian was bought out the new company stopped making stoves with the top port around 2007 due to lack of interest in the digital probes, mine was made after that so hence the lack of a hole, the new company has not updated the manual.

    I only have a front port, but after talking to them I might try drilling from the top and putting the thermocouple in behind the cats, they gave me some good suggestions on how to deal with the air jacket.
    raybonz likes this.
  6. pgmr

    pgmr Feeling the Heat

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    I wonder what the manual means when it says, "A small port is located on the top of the stove, inside the unit. From that port, wires may be led out of the unit to a temperature monitoring device."? Was Appalachian able to describe how the old design worked?
  7. mellow

    mellow Resident Stove Connoisseur

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    They had a hole in the top plate with a screw in it from what I understood, basically the same thing I am thinking of doing, I am going to make the Air jacket hole slightly bigger so I can fit the thermocouple down to a smaller hole in the top plate, the top plate hole will be threaded incase I need to close it up I can put a screw in it like the original stoves had.

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