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I believe the system is fully pumped already but I agree the manual 3 port will have to be changed. Glad to hear there's no technical reason stopping me going ahead though.

I have a Potterton Prima 50B conventional boiler, which is at least 15 years old but working perfectly, and a vented hot water cylinder with loft tanks. The boiler has a Danfoss 102 timer and there is a manual 3 port zone valve next to the boiler. There is no room thermostat, no TRVs, and...

Good to know, thanks Ian

Thanks for your replies. I had assumed (you know what they say about assumptions) that it was a gravity cold feed off the loft tank but now you've pointed it out it's clear that they've taken a mains supply and put a pressure reducing valve on it. Even bodgier than I realised. The pressure...

Hello all I have no water (or the tiniest dribble) from my bath cold tap or my shower. Both are fed by a shower pump fed from the same branch off a T. The sink tap is fed off the other side of the T and there is plenty flow and pressure there. The section of pipe from the T through the...