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.

Hot water boiler making growling noise.

Options
Call_Me_Al
Call_Me_Al Member Posts: 7
in Gas Heating
I have a customer with a Repco hot water boiler.   The boiler heats the house but makes this growling noise.   I removed the draft hood and found the cast iron sections soot-ed over, ( never thought to see so much soot with a natural gas boiler).  I  removed the top jacket and burner assembly to clean the sections.  Vacuumed all the soot and reassembled everything.  I fired up the boiler and checked the draft and it was fine.    The burners are ribbon type and cleaned them before reinstalling.  The flame looks good.  The boiler still makes growling noises, albeit not as bad,  but what am I missing?

Comments

  • icesailor
    icesailor Member Posts: 7,265
    Options
    Missing:

    A combustion analyzer. What's the CO and why did it soot up? What did you do to stop the sooting?

    The "growling" sounds like a form of back-firing. Never good but good for sooting. What's the gas pressure at the gas valve?

Categories