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Radiator Vent Help

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JohnCT
JohnCT Member Posts: 35
in Strictly Steam
The radiator in my upstairs bedroom is the farthest from the boiler and has a Gorton #6 on it. The riser is a bare pipe through the living room below. It hisses for a long time (making it hard to sleep) when it comes off the small setback in the morning. I’ve got 2 G2s and 2 Big Mouths on 90’ of 2” main, so I think the main is vented OK. I’m wondering if the excessive hissing is from the volume of air in the long riser and I should replace the #6 with a C or D. Any thoughts on that? Are there quieter vents I should be looking at?

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  • neilc
    neilc Member Posts: 2,703
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    If the main venting is adequate, and all of them are working, , , ,

    what's the boiler pressure set to ?
    and what do you see on the gage when running?
    post a picture showing both together
    known to beat dead horses
  • JohnCT
    JohnCT Member Posts: 35
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    Pressure is set to .5 with a diff of 1. The gauge is a 0-30, so stays pegged.
  • neilc
    neilc Member Posts: 2,703
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    if you float a tissue over that vent,
    does it get moist / wet?
    Is boiler piping correct and you have good dry steam?
    known to beat dead horses
  • nicholas bonham-carter
    nicholas bonham-carter Member Posts: 8,576
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    Unless you have an accurate low pressure gauge, you will never know what your pressure is, even though the pressuretrol is set
    properly low, as they are so inaccurate.
    I don't know how small your setback is, but it may also contribute to the noise problem, along with higher than needed pressure.
    Try keeping the thermostat at a constant lower temp-66 degrees, 24/7, and see how the system behaves.--NBC
  • JohnCT
    JohnCT Member Posts: 35
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    Nicholas: any reason I can’t replace the existing guage with a 0-3 instead of adding a second one? I read previously a 0-30 is code, but I promise not to report myself to the authorities. Is there a brand you’d recommend?
    JohnNYethicalpaul
  • Jamie Hall
    Jamie Hall Member Posts: 23,327
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    JohnCT said:

    Nicholas: any reason I can’t replace the existing guage with a 0-3 instead of adding a second one? I read previously a 0-30 is code, but I promise not to report myself to the authorities. Is there a brand you’d recommend?

    The "authorities" include your insurance company. No code required gauge? Your insurance company may or may not pay off on a claim. More likely walk away from it. It's your risk...
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • ethicalpaul
    ethicalpaul Member Posts: 5,704
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    If the insurance company can read the gauge after the roaring inferno that we all know was not caused by the gauge, then more power to them!

    I bought this one and it’s good. Kodiak Controls KC25-3# Low Pressure Gauge 3 PSI https://www.amazon.com/dp/B00H9ZWLZG/ref=cm_sw_r_cp_api_dfw8Bb4HMAT83
    NJ Steam Homeowner. See my sight glass boiler videos: https://bit.ly/3sZW1el
    JohnCT

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