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air in oil?

todd_6
todd_6 Member Posts: 13
in THE MAIN WALL
I have an outdoor tank 90' from burner approximately 15' higher than burner. It is a single pipe system, top tank fed by 5/8 line(supply house recommendation). The burner is a Beckett, w/outdoor air kit. Lowest temp at night 30'F. The burner will run for a few hours, then shut off on safety. If I go and bleed at pump, I get air bled and away she fires again. I am not sure if I have a loose fitting between the OSV and the burner which is drawing in small quantities of air which accumulates in the pump till it can't fire anymore or what? One other thing, the install is new and I wonder if all the air is out of the line where the high point of the fuel line is over the tank. Maybe some of that air is finding its way down to the burner? Any education would be appreciated.

Comments

  • todd_6
    todd_6 Member Posts: 13
    Air in oil???

    I have an outdoor tank 90' from burner approximately 15' higher than burner. It is a single pipe system, top tank fed by 5/8 line(supply house recommendation). The burner is a Beckett, w/outdoor air kit. Lowest temp at night 30'F. The burner will run for a few hours, then shut off on safety. If I go and bleed at pump, I get air bled and away she fires again. I am not sure if I have a loose fitting between the OSV and the burner which is drawing in small quantities of air which accumulates in the pump till it can't fire anymore or what? One other thing, the install is new and I wonder if all the air is out of the line where the high point of the fuel line is over the tank. Maybe some of that air is finding its way down to the burner? Any education would be appreciated.
  • clammy
    clammy Member Posts: 3,162
    air leaks

    Sounds like air leaks but with a suction line that long and a outdoor tank it could be fuel jelling i would throw somew anti jell additve and install a tiger loop on your burner .How many inches of vacume are you pulling your burner pump could be cavatating peace and good luck clammy

    R.A. Calmbacher L.L.C. HVAC
    NJ Master HVAC Lic.
    Mahwah, NJ
    Specializing in steam and hydronic heating

  • ed wallace
    ed wallace Member Posts: 1,613
    air in oil line

    do you have compression fittings if so get rid of them also osv must not be subject to freezing
  • todd_6
    todd_6 Member Posts: 13
    fittings

    All fittings are flare & OSV is inside after firomatic and oil filter.
  • STEVEN MARKS
    STEVEN MARKS Member Posts: 154
    osv

    Oil safety valves require a vacuum to open and allow oil to burner. I believe you will need to make it a 2 pipe system and install a dely ignition.
  • Firedragon_4
    Firedragon_4 Member Posts: 1,436
    It's an air leak and when you

    get done bleed the osv thoroughly, Go here:
    www.onwatchinc.com

    and read 'On The Job #13.

    Do not add a return line, it's the ultimate band-aid and downright stupid with a 15' drop, talk about redundant. FIX THE AIR LEAK!
  • jim_49
    jim_49 Member Posts: 24
    I think your all wrong, 15,

  • jim_49
    jim_49 Member Posts: 24


    I think your all wrong, A 15' drop on a single pipe oil line,assuming there is no leak, and you have to keep bleeding the pump, means you have an air leak on the oil line inside the tank.Remove the line from top of tank and REPLACE IT.
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