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Steam boiler clogging repeatedly

chad444chad444 Posts: 1Member
I have a residential steam boiler. I get it serviced annually where my plumber cleans out the sight glass and key components, skims the water and puts in the green additive in the water. The issue is that a few days later, the water sight glass is already clogged up and the water level is not able to be monitored properly. Additionally, the other components clog often throughout the year and at times the unit shuts down. It appears that the tank must be full of sediment or rust. This seems to stem from an issue a few years ago when the unit was way overfilled and I think that all of the gunk from my pipes in the upstairs of the house may have washed down into the boiler (my speculation). Bottom line is that I am in an endless cycle of pain here. How can I completely flush out the entire unit and all of the pipes in the spring and basically start new? Is there a process for this or directions somewhere? Appreciate all of your collective support!


  • FredFred Posts: 6,405Member
    edited April 11
    If you have a good access point into the boiler, you can use a homemade nozzle/wand to get in there and wash it out. Several have posted pictures of them on here. Also, it may well be that the return lines need to be cleaned out, again, if you have a plug or other access into them, you can snake or flush them out.
  • KahooliKahooli Posts: 111Member
    What green additive?
  • FredFred Posts: 6,405Member
    Kahooli said:

    What green additive?

    Good Question! I suspect it's Squick or some other additive that should not be in there.
  • nicholas bonham-carternicholas bonham-carter Posts: 7,094Member
    The preseason checkup should include:
    1.clean the sight glass.(do it yourself later)
    2.flush out the boiler bottom, through the boiler drain. (Do it yourself later)
    3.check the operation of the low water cutoff. (Do it yourself later)
    4.Clean the burners, and analyse the combustion with a special device.
    At least that’s how a knowledgeable steam pro would do this.
    Drain all the green water out, and then do a skimming, and find another tech to take care of the boiler.—NBC
  • newagedawnnewagedawn Posts: 453Member
    time for a good skimming, and i wouldnt recommend the green chemical anymore, that chemical is only used to help clean the boiler for skimming not on annual tune ups, but once you skim it that chemical will help in the cleaning, again dont put more in after skimming
    "The bitter taste of a poor install lasts far longer than the JOY of the lowest price"
  • gerry gillgerry gill Posts: 2,767Member
    That boiler needs a good wand cleaning and skimming as Fred stated. Even if you have to have the plumber cut and peel the bushing/plug/ etc out of an unused return opening to do it.

    Serving Cleveland's eastern suburbs from Cleveland Heights down to Cuyahoga Falls.

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