May 23, 20206 yr Author Another very basic question or two since no one has recoiled in horror so far! 1) "External immersion heaters are designed to directly heat domestic hot water (DHW) in a vented system." My rad circuit is not vented so far as I understand it, but there is an expension vessel there and an emergency pressure relief value, so I am assuming that this would be OK. But please say if not. 2) "Because the Willis Immersion is such a rapid water heater, it is not recommended for use in hard water areas." Hardness is not going to be an issue as new mains water is not getting in as a source of calcium except for top-ups. But are there other corrosion or similar issues that I should think about? Rgds Damon
March 16, 20224 yr Author Just for the record on this thread: the Sunamp Thermino 150 ePV and myenergi eddi are in and running, though we're not getting enough sun to give them a good workout yet! A reminder of the full write-up link: https://www.earth.org.uk/note-on-solar-DHW-for-16WW-UniQ-and-PV-diversion.html And here is a live chart to keep you all on the edge of your seats: https://www.earth.org.uk/_heat-battery-target.html Thank you all for your advice along the way! Rgds Damon Edited March 16, 20224 yr by DamonHD
Create an account or sign in to comment