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Cast Iron Radiator Cleaning
Hello, I am restoring an old farm house and I am keeping the cast iron heaters. I am wondering what I should put in the boiler water to clean inside the cast iron radiators / heat lines.
Steam or hot water? If it's steam, there's no need to do anything at all for the radiators and the steam lines. Wet returns might need to be flushed, but that's just a matter of figuring out how to run water through them. If it's hot water, there are a number of cleaners which can be used -- if needed.Br. Jamie, osb
Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England0
It's hot water0
You could install and run a hydronic cleaner, just a strong detergent really.
Then flush with a good flow rate to move out and rust and dirt particles. It is tough to get all the corrosion particles cleaned out of old rads like that.
Best not to over pump them and strip up the crud that will get into circulators, boilers and control valves.
I'd also add a good dirt separator with a magnetic function to help keep any crud that breaks loose out of the components.Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream2
A little crud sitting in the bottom the radiator would have a negligible impact on operation anyway.
Use a good boiler treatment and follow the instructions. They may include a single flushing or just draining off crud from the return.
A mentioned, a good dirt separator is a must have item, especially if a high efficiency boiler is used.
An never drain a system once filled except for repairs. Keep it under pressure and fix any leaks even if minor.1
Thank you everyone for your input0
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