How to deal with a furnace with a need to bleed

Discussion in 'Home Repair' started by Aaron, Jan 26, 2004.

  1. Aaron

    Aaron Guest

    Hi,

    This is the second winter in my "new" house -- furnace is approx 15
    years old. Runs on oil -- tank is outside in very cold climate, so oil
    is mixed with kerosene by fuel company. The furnace has an issue in
    that, as the oil volume in the tank decreases, air seems to sneak into
    the line. Last year this occurred reliably at 1/4 tank (according to
    the plastic gauge); this year it has begun to happen with as much as
    1/3 tank remaining.

    Generally, when I discover that the furnace has stopped running, I can
    bleed the line for approx. 10 seconds, see the pink oil sputter out
    air, turn to a richer black color, and close the line. The furnace
    kicks in and will often run for awhile again (possibly days, if
    necessary) until at some point air gets into the line again. I sense
    that as oil volume continues to decrease, the need to bleed becomes
    more frequent. The problem disappears when the next oil delivery fills
    up the tank.

    This is a one line system. My furnace 'guy' says that a two line
    system will fix the problem, but he (working alone, and somewhat
    older) is uncomfortable doing the work in the extreme cold of winter
    (line runs through a low crawlspace; oil tank and furnace on opposite
    sides of house).

    My questions are (a) is he right? (his price for installing a second
    line was quite reasonable) and (b) is there *anything* I can do this
    season to help? Waiting until the furnace stops (often in the middle
    of the night) to wake up to a cold house is inconvenient to say the
    least.

    thanks!
    Aaron
     
    Aaron, Jan 26, 2004
    #1
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  2. Aaron

    Speedy Jim Guest

    Aaron wrote:
    >
    > Hi,
    >
    > This is the second winter in my "new" house -- furnace is approx 15
    > years old. Runs on oil -- tank is outside in very cold climate, so oil
    > is mixed with kerosene by fuel company. The furnace has an issue in
    > that, as the oil volume in the tank decreases, air seems to sneak into
    > the line. Last year this occurred reliably at 1/4 tank (according to
    > the plastic gauge); this year it has begun to happen with as much as
    > 1/3 tank remaining.
    >
    > Generally, when I discover that the furnace has stopped running, I can
    > bleed the line for approx. 10 seconds, see the pink oil sputter out
    > air, turn to a richer black color, and close the line. The furnace
    > kicks in and will often run for awhile again (possibly days, if
    > necessary) until at some point air gets into the line again. I sense
    > that as oil volume continues to decrease, the need to bleed becomes
    > more frequent. The problem disappears when the next oil delivery fills
    > up the tank.
    >
    > This is a one line system. My furnace 'guy' says that a two line
    > system will fix the problem, but he (working alone, and somewhat
    > older) is uncomfortable doing the work in the extreme cold of winter
    > (line runs through a low crawlspace; oil tank and furnace on opposite
    > sides of house).
    >
    > My questions are (a) is he right? (his price for installing a second
    > line was quite reasonable) and (b) is there *anything* I can do this
    > season to help? Waiting until the furnace stops (often in the middle
    > of the night) to wake up to a cold house is inconvenient to say the
    > least.
    >
    > thanks!
    > Aaron


    I wonder if the kero mix is part of the problem?
    A 2-pipe system will likely solve it.
    What if you pulled the new copper line (even a temp route)
    and left the final hookup to him?

    Jim
     
    Speedy Jim, Jan 26, 2004
    #2
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