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  1. #1
    Join Date
    Jun 2006
    Location
    New Jersey
    Posts
    4,330

    Moisture in Manifold

    I went to an account today, that has 4 MUA's. One was down, found a linkage knuckle broken, replaced. I just happen to take a look at the burner, and saw moisture in some of the orifices. Hmm, so I take a quick look at the other units and the same thing.

    What would case moisture in the manifold? I wanted to open the drip leg feeding the gas train, but the are feed up though the roof and the drip leg was 40' in the air.

    I wouldn't think there would be moisture at the orifices, being that the manifold is under a negative pressure.

    Any ideas?

  2. #2
    I've had whole 1/2" pilot lines on a MUA blocked with ice, only thing that I thought of and was told that its condensation formed on initial firing and or right after shut downs.

  3. #3
    Join Date
    Jun 2006
    Location
    New Jersey
    Posts
    4,330
    Quote Originally Posted by JYoung Guy View Post
    I've had whole 1/2" pilot lines on a MUA blocked with ice, only thing that I thought of and was told that its condensation formed on initial firing and or right after shut downs.
    I just can't see how that can happen, with a pilot line.

    My thinking about the manifold, was since it's in the air stream and full of air, I could get some sweating with warmer weather. But my personally argument, is the change in temp would be slow. There shouldn't be a big change in temperature.

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