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.
If our community has helped you, please consider making a contribution to support this website. Thanks!

clanging radiator

Options
magewick
magewick Member Posts: 25
edited November 27 in THE MAIN WALL

Recently I had a new system installed for my two pipe system. The system has been working properly. Today, all radiators are cold and the boiler has not been running for 2 hours - now a couple of radiators are clanging but the boiler is not running - pressure gauge is zero. riser pipes are cold - clanging is still happening. please advise.

Comments

  • neilc
    neilc Member Posts: 3,129

    pictures of the boiler,

    floor to ceiling, showing the header, from 2 angles,

    of the sightglass,

    show the Ptrol and pigtail, and the ptrol settings,

    what pressure do you see when the boiler is hot and running?

    known to beat dead horses
  • DanielDAY
    DanielDAY Member Posts: 42

    This doesn’t make sense if the boiler has not running after two hours. That would mean it has nothing to do with your boiler system as the steam would have condensed by now. You should set the temperature higher at your thermostat to kick the boiler on, go to said radiators and see if they make noise. Then turn the temperature down and go to said radiators to see if they make noise after a few minutes of being off. Two hours is too long to be hearing noise from your boiler


    maybe also double checking your system isn’t being overfilled if this is steam

  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 19,642

    Check the sight glass maybe the boiler is flooded with water or low on water. Use a flashlight behind the sight glass.

    Sometimes its hard to tell an empty sight glass from a full flooded one. Post a few pictures.

    If the thermostat is calling it is most likely off on pressure or water level.

    Did you check the circuit breakers?

  • mattmia2
    mattmia2 Member Posts: 15,653

    the "clanging" could be expansion noise

  • magewick
    magewick Member Posts: 25
    3A918B73-2611-44C1-865F-63DD75CE52BA_1_105_c.jpeg tempImageE1bx4g.jpg A7A4DDAF-A95A-4047-8E7D-0E6F75222EC5_1_105_c.jpeg EB21AB70-582E-4459-B19E-2291623D9233_1_105_c.jpeg 7200BC25-C960-41E8-9C6D-05572FD07C82_1_105_c.jpeg 971CB215-88C2-465D-BBF1-EBFA0113386C_1_105_c.jpeg E2E020DC-3FDA-48B9-B5F2-52DA2654C491_1_105_c.jpeg 3C946BA2-F8E7-45BB-93E4-95764A9A6476_1_105_c.jpeg B1FBA5F8-7E11-43C5-AC02-72FF4B8039EB_1_105_c.jpeg D9633950-506C-4437-BC7B-3D08C275E658_1_105_c.jpeg 3C946BA2-F8E7-45BB-93E4-95764A9A6476_1_105_c.jpeg B1FBA5F8-7E11-43C5-AC02-72FF4B8039EB_1_105_c.jpeg

    System does not show any pressure only negative pressure

  • Jamie Hall
    Jamie Hall Member Posts: 26,856

    If the boiler is off and cold. And the pipes are cold. And the radiators are cold.

    And it's been that way for a while and then suddenly starts banging. It's something else. A little hard to say what without being there.

    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England

Categories