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Posted by Jason Ruiter on November 16, 2005 at 23:09:43:
I have a 1 pipe steam system with cast iron radiators. Single floor home, 6 radiators total.
The first two radiators in the loop work fine. The others don't get any heat. Even the supply pipe is cold about 1/2 way around the steam loop.
I've checked the vents on all the radiators. There're set to "fast" at the beginning of the loop and gradually go slower near the end.
I had the main vent replaced last year.
How can I troubleshoot this? I know that bad venting can cause a radiator to stay cold, but it seems strange to me that the supply pipe is cold near the middle of the loop.
Any help appreciated.
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