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3yr Old Steam Boiler No Skim Station

in Gas Heating
Hello, I had a new steam boiler installed 3 years ago and just discovered during a recent plumbers visit, that we do not have a skim station. This new plumber is suggesting we install one and skim the system. My hesitation is upfront cost. Is the skim station a necessity at this point? The system runs pretty good, uneven, but good. It could be better I'm sure. I would like to know if I'm being penny wise and pound foolish? Thank you!
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Comments
If you find the install manual for your model, in the basement or online, there is a diagram showing the ports in the casting. One of these may be labeled skim or blow off port.
Not having skimmed hasn't hurt the boiler but can make it run inefficiently and erratic.
On your Burnham, the skim port will be sealed with a pipe plug on the other side of the outer jacket where circled. It'll be a square headed plug, with a 1 1/4" (or so) tapping.
Undo the front-half top of the boiler jacket and you can see it. There's barely enough room to reach in, pop out the knockout blank, and stick a big pipe wrench on the square plug head.
Then, thread a 6" nipple with cap in it's place, and you're set for skimming, and you don't have to much around with the pipe-plug anymore.