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New radiator pipe work - 10mm system. Can I use 15mm for just one room?
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I asked a heating engineer about this a while ago, he said be careful as it could put the pump in the boiler under added pressure0
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531063 said:I asked a heating engineer about this a while ago, he said be careful as *it* could put the pump in the boiler under added pressureWhat exactly?Using 15mm instead of 10mm? Obviously no.Adding an extra 10mm loop? Again, no - obviously.In both cases the pressure can only drop. The flow can slightly rise, but, if needed, it can be adjusted with lockshield valves.
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Microbore systems are commonplace. What's more, with TRVs, a reduce flow/increased resistance is exactly what happens. A pump ain't going to suffer.0
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I think i would just extend the 22mm out if its going to feed the room below one day? And if a heat pump is one day on the cards it would all need to be replaced anyway with 22mm/15mm.0
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