might have air in the pipes
2007-01-23 03:40:54
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answer #1
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answered by a_k 4
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If you check the pipe you may find that it has not been secured properly so when the hot /steam passes through, the pipe wobbles and bangs against the skirting or wood work. Pipe clips are very cheap and simple to instal. First however, when the system is up and running check the temperature at the top of the radiator. If it is cooler than the bottom, then the rad needs to be bled. Buy a bleeding key (50p) and holding a cloth insert the key into the valve which is is always at the top of the radiator on the right outside edge. (some rads have a valve hidden behind a plastic cap which can be removed with your thumbnail) Insert the key and turn anti clockwise very slowly. If there is air in the system, you'll hear a hiss. leave the key open until water appears then turn the key clockwise immediately to shut it off. If, when you turn the key anti clockwise there is a drip of water, there is no air in the system.
2007-01-19 13:56:15
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answer #2
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answered by Anonymous
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it sound like there is a clearance issue and the pipe is rubbing against some framing. as the pipes get hot and expand they are binding on something. a plumber can fix this, but the contractor that installed the radiator should do it as he didn't do it correctly. good luck.
2007-01-19 14:11:27
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answer #3
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answered by car dude 5
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More than likely all that it is is that the new radiator needs to burp for a little while. That is what they call it. It is not actually knocking, just trying to bleed itself. Kinda like your radiator when you go and fill it back up after losing alot of fluid or changing it out, you know how it BURPS??? Same thing.
2007-01-19 13:35:37
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answer #4
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answered by protruckdriver71 3
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Sounds as if the plumber needs to bleed the system. No big deal.
2007-01-19 13:37:18
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answer #5
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answered by MT C 6
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nothing major sounds like loose pipe or incorrect steam trap
2007-01-19 13:38:56
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answer #6
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answered by little ragu 2
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There should a valve located on the system to bleed the air.
2007-01-19 13:39:40
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answer #7
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answered by ZEBUCORE 5
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