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I have just ahd a new boiler installed by a freind.. The wiring i have to do myself.. I have an open vented system with a standard boiler. The boiler wiring diagram shows where the external pump is connected to on the boiler electrica input etc. but i have 2 motorised valves and a honeywell 7...

I have a microbore system, The boiler fires up ok and the main large pipes all get hot etc The small microbore pipes and rads remain stone cold. I believe the main large pipes flow into a manifold and then seperate out into microbore pipe. Could i remove these manifolds and the microbore pipes...

Hi can any one help ,, i have a Chaffoteaux et maury, Corcev 28BF central heating boiler. The pilot light , lights up ok with no problems apart from the fact that if fluctuates from a big flame down to nothing and then back up again but does not go out. If i turn the thermostat up i can hear the...