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Orange Pilot

Post in 'It's a Gas!' started by G6 at Snook TX, Jan 12, 2013.

  1. G6 at Snook TX

    G6 at Snook TX Member

    Joined:
    Oct 17, 2011
    Messages:
    117
    Loc:
    central Texas
    I had to take my Dearborn stove out of the back room to give it a good cleaning because of dust accumulation. Prior to disconnecting it, the pilot had developed a white tip on the blue flame because of dust. Anyhow, I gave it a good blow with the air wand on the air compressor and re-lit it after that. The white tip is gone on the pilot is gone, but it was replaced by an orange aura around the blue flamed pilot.

    What gives?

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  2. DAKSY

    DAKSY Patriot Guard Rider Staff Member

    Joined:
    Dec 2, 2008
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    5,391
    Loc:
    Averill Park, NY, on Burden Lake II...
    I'm thinkin there's STILL something in there. Orange flame = dirty flame. What do you have for the mV output on the thermopile?
  3. G6 at Snook TX

    G6 at Snook TX Member

    Joined:
    Oct 17, 2011
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    117
    Loc:
    central Texas
    The orange aura dissipated after an hour or so and it is now like it ought to be. What is "mV output on the thermopile?" Can you use more laymen terms?
  4. DAKSY

    DAKSY Patriot Guard Rider Staff Member

    Joined:
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    Loc:
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    Sorry. Most gas units have adjustable pilot flame heights, & to adjust them correctly, you need to use a multimeter, set to DC voltage. The probes tips on the red & black wires are placed on the TP & the TP-TH (or TH-TP) connections on the terminal block & a reading is displayed on the multimeter. That reading is the millivolt output from the thermopile, sometimes called a millivolt generator. Most units are set at around 550 millivolts (mV) with ONLY the pilot on. That reading will drop about 200-250 mV when the burner is switched on.
  5. G6 at Snook TX

    G6 at Snook TX Member

    Joined:
    Oct 17, 2011
    Messages:
    117
    Loc:
    central Texas
    Probably a bit too advanced for this Dearborn. It is a simple Dearborn space heater. Old fashioned pilot light. No electrics involved; just a gas line and a set of matches.
  6. Heatsource

    Heatsource Minister of Fire

    Joined:
    Dec 19, 2011
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    786
    Loc:
    Northern CA
    old dearborns should have just a t-couple, no t-pile

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