Click here to Find a Contractor in your area.
Welcome! Here are the website rules, as well as some tips for using this forum.

If you've found help here, check back in to let us know how everything worked out.
It's a great way to thank those who helped you.
Need to contact us? Visit https://heatinghelp.com/contact-us/.

Boiler knocking

WAYNEPEINEWAYNEPEINE Member Posts: 4
Lately we have been having issues with cast iron 180 deg. Boilers knocking. We have done the basics from adding Fernox products, and flushing boiler with vinegar. Fernox has worked well except in 1, a 15-year-old cast iron slant fin. It started about a year ago. We can not get it to stop after trying Fernox and circulating vinegar only through boiler. Any suggestions?

Comments

  • HomerJSmithHomerJSmith Member Posts: 929
    edited January 3
    What do you mean by knocking? How long does the knocking last? What part of the heating cycle is the knocking most prominent? Is it a SlantFin Galaxy? What does the Tridicator say, pressure and temperature, when this is knocking? Have you isolated the knocking to some part of the system or boiler?
  • WAYNEPEINEWAYNEPEINE Member Posts: 4
    Sorry knocking! entire time burner is on. 180 deg. 20# psi boiler. my guess is full of lime? we have ran Fernox f2 silencer in it 2 times, lasts for a while. Ran vinegar circulating in boiler only. Works for a while. Any other chemicals you guys suggest?
Sign In or Register to comment.

Welcome

It looks like you're new here. If you want to get involved, click one of these buttons!