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Riser Size
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Riser Size (5 Posts)
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Riser Size
I just purchased The Lost Art of Steam Heat. After going through a few chapters, I went to have a look at my boiler. It is a Weil McLain SGO-3 and the specs call for a 2 1/2" riser. When this unit was installed, it was down sized to 2" due to the rest of the pipes being 2". My question is should this be replumbed with 2 1/2"? If the answer is yes, at what point can it go back to the 2" to meet the rest of the supply piping. I really appreciate any assistance. This is my second house with steam heat and I am trying to make this as efficient a system as possible.
John -
riser replacement
depending on how old your boiler is, the riser, and bushing may be time-consuming to remove for this time of the year.
how is the boiler performing?--nbc -
riser sizes
http://www.weil-mclain.com/en/multimedia-library/pdf/weil-mclain-pdf/products/boilers/oil-boilers/sgo/sgo-boiler-manual.pdf.pdf
See page 14 and 15.
Near boiler piping needs to match manufacturer specs. You can go back to 2" at the output of the header. -
Riser Size
I just had the oil company do a service on the boiler for the first time. The main filter was rusted out, the filter at the burner was nearly completely plugged, and I guess it needed some TLC. After the cleaning, it seems to be using more fuel! It might just be my imagination though. I won't touch the piping now because we can't be without heat. So if I read the reply correctly, after I get to at least 24" above the water line and make the 90 deg to the mains, I can go back to the 2". Also there is currently only 1 main vent on the return, but that will be for another time. Thanks again -
when to vent
do the main venting improvements now so you can save money this season, and not have to wait until next winter.--nbc



