Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

picking up air

gregchurchill
gregchurchill Member Posts: 7
in THE MAIN WALL
Weil McLain 4 section oil boiler. Standard piping, #30 expansion tank with push away manifold, 5 007's. First zone connected to 80 gallon indirect. 007 was replaced and keeps getting air. Bleed air out, not a big slug but enough small stuff to stop flow and have a no hot water call. Only four inch nipple off header to expansion tank, typical air scoop then hw circ. is first zone. Of course, worked fine before the circ failed.

Expansion tank and air vent issue? Seems all that new water has air not getting out of system. Seen it? Looking to fix it w/o being a parts changer

Comments

  • STEVEusaPA
    STEVEusaPA Member Posts: 6,505
    Show us a picture of your near boiler piping-boiler, circs, expansion tank, air eliminator, feed...all in one pic.
    Also what type of emitters?

    There was an error rendering this rich post.

  • Jamie Hall
    Jamie Hall Member Posts: 25,274
    And remember first principles: air can only get into a system -- once it's gotten out by purging and your air eliminator -- at a point where the system pressure is less than atmospheric. Such as, for example, a high point without enough static pressure, or at fittings approaching a pump which is pumping towards the expansion tank and sucking through a bunch of pipe and fittings.
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England

Categories