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8mm microbore rad not getting hot
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<blockquote data-quote="Rob_the_rich" data-source="post: 454303" data-attributes="member: 8419"><p>Good advice from the Doc as usual. Only thing I can add is to isolate the boiler first by turning off the flow and return valves, also isolate every working radiator, and turn off the other valve to the dodgy rad and keep the drain point open with hose attached. So the blockage has somewhere to go.</p><p></p><p>From the boiler there are usually 22mm flow and return pipes, these sometimes go to a manifold (spider) under the floorboards somewhere. The legs of the spider go to each rad. I have seen blockages at the last leg.</p><p></p><p>Could also be a crushed pipe somewhere.</p><p></p><p>Good luck.</p></blockquote><p></p>
[QUOTE="Rob_the_rich, post: 454303, member: 8419"] Good advice from the Doc as usual. Only thing I can add is to isolate the boiler first by turning off the flow and return valves, also isolate every working radiator, and turn off the other valve to the dodgy rad and keep the drain point open with hose attached. So the blockage has somewhere to go. From the boiler there are usually 22mm flow and return pipes, these sometimes go to a manifold (spider) under the floorboards somewhere. The legs of the spider go to each rad. I have seen blockages at the last leg. Could also be a crushed pipe somewhere. Good luck. [/QUOTE]
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8mm microbore rad not getting hot
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