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Placing main vents

Snowmelt
Snowmelt Member Posts: 1,428
in THE MAIN WALL

went to a job the main vents where right above the elbow. There is an union right below that I was going to take the union out , how far lower do I have to go before I put a tee, nipple then elbow before I put a main vent

IMG_3805.jpeg

Comments

  • ethicalpaul
    ethicalpaul Member Posts: 6,978
    edited January 13

    Don't bother with all that. Just put a nipple, an elbow, a nipple, and another elbow on top of the existing reduced tee

    Then there's another one over to the left a little, correct?

    image.png

    NJ Steam Homeowner.
    Free NJ and remote steam advice: https://heatinghelp.com/find-a-contractor/detail/new-jersey-steam-help/
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  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 16,847

    Yeah. If you need more venting build an antler.

  • delcrossv
    delcrossv Member Posts: 1,563
    edited January 14

    Generally 18" back from the drop to the wet return. But I agree, in this case, just go up and over.

    Trying to squeeze the best out of a Weil-McLain JB-5 running a 1912 1 pipe system.
  • Snowmelt
    Snowmelt Member Posts: 1,428
    edited January 14

    I might get the job of changing the boiler …….. if I do I told the customer I’ll move the vent to a different location . I’m thinking go down (14 - 18 inches seem to be a magic number) since There’s a union already there. Then come out with a tee a small 3 inch nipple then elbow then a new steam vent .
    yes theres 2 , 1 on each side

  • Long Beach Ed
    Long Beach Ed Member Posts: 1,436

    Did you read what paul said? Put the vent up on a nipple and call it a day.

    ethicalpaul
  • ethicalpaul
    ethicalpaul Member Posts: 6,978

    I don't like vents mounted to vertical tees. The water is going to be running down the sides of the vertical pipe and it can get carried into the side outlet of the tee. The top port of the existing reduced tees is a good place.

    The vent will be in a different location so you won't have told any fibs to the owner. Also replace the vents, those ones are no doubt too small and likely failed closed.

    NJ Steam Homeowner.
    Free NJ and remote steam advice: https://heatinghelp.com/find-a-contractor/detail/new-jersey-steam-help/
    See my sight glass boiler videos: https://bit.ly/3sZW1el

  • Snowmelt
    Snowmelt Member Posts: 1,428

    Thanks Paul, will see what happens

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