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Hi, I am replacing our 11 year old boiler (due to H.Ex. leak) with a new one. This is in a "sealed" system with red expansion vessel in airig cupboard & a megaflo (no tank in loft). However the exisiting boiler is Vaillant ecoTEC 4xx boiler - which is satated by vaillant as an "open vent" boiler...
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… praying to the plumbing God, Bob Pictures and layout details attached, so be patient. 21 year old oil fired system in pretty good nick. I noticed some minor pumping over from the vent (occasional burst of water, and the odd dribble). Didn’t think much of it as I was about to replace the...
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Hi All, Hope somebody can help :) I have a vented HW system with a pressurised Ch system but got bit of a annoying issue, when the hot water comes on all seems ok then after about 15/20 mins i started to hear a trickling noise from hw cylinder which i can also hear in the boiler. The central...
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Hi, I have just had my central heating system "upgraded" for a four bed-roomed detached house. The heating company recommended going from the open vented system to sealed / pressurized system, new pump ( UPS3 Grundfos ) all new plastic pipework ( extending ) the 22mm feed and return pipes so no...
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Hello, my Mothers heating failed in the recent UK cold snap. I found the pump was stuck. I have a question about pump orientation. The existing pump flows downwards. The manual for the proposed replacement recommends that it should pump upwards. This would involve rearranging the flow &...
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