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Can anyone help me here please? I have bought a bungalow with a gravity hotwater system with a Salamander ESP50CPV pump rated at 1.5 bar feeding a single thermostatic shower. I have had problems with lack of termperature at the shower but removing the cartridge, cleaning and refitting cured...

Just for anyone reading this at a later stage I rewired the pumps with a relay so as to be independent, and set the existing controller to match with a wireless stat. I also bit the bullet and had a new hot water tank fitted by a professional - although it was not clogged with limescale he...

Thanks again. I was thinking to do "S plan" control but with the pumps not valves, just to get more control. I can't see that this will be much different from how it works from a plumbing sense now so shouldn't give any problems? There are a couple of old wheel gate valves in each side of...

Thanks to you all for the very helpful and quick replies – Matt1e – I think will go for an “S plan system” eventually and I have seen an old post (I think from you?) on how to do this with a relay. Dan - Would a DHW priority be useful – I can’t see that this boiler has a facility to do...

I have a conventional Warmflow U90HE boiler feeding a common flow manifold with 2 pumps, one via a cylinder stat for the conventional DHW and one for the CH circuit. There is no room stat fitted (some/most rads have thermostatic valves). The time controller is set to a gravity DHW mode – ie HW...