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Last seen: Aug 16, 2026
@toodles Thanks, very helpful.
I have a 7kW Vaillant and it definitely has a PWM pump. The 12kW may differ of course. This water pump can, if you wish, be turned up or down manual...
I suppose it achieves what it is designed to achieve, namely to protect installers. Just like everything MCS so far as I can tell. He who pays the ...
@toodles Thanks for this. I was working on a 'how to fix an LLH/buffer tank without removing it' script and more or less got, in my thought process...
@declan90 Be aware that this might impact COP negatively as you are aiming to increase the emitter DT. In principle higher emitter DT = lower av...
I note 21 degrees specifies a 25l buffer tank. I would check, if you haven't already, that this is 2 port not 4 port. I would not accept the proposa...
Radiator manufacturers publish the volume of water in their radiators. For any given height and type its proportional to length so they often just gi...
Re the Ebac heat pumps The heading on the table is presumably meant to be kW not kWh! - the 9kW one will be cycling almost continuously with a min...
Thanks, thats helpful And painting the outside black... The UI for many makes has not, IMHO, been designed or developed with the user in mind. ...
OK so assuming a base temperature of 15.5, -2 will be 17.5 degree days. So your heat loss at -2 is roughly 3.5*17.5/24=2.6kW which is consistent with...
OK, further to the above (which please do read as its about a different and possibly equally important topic) this plot is a bit of a goldmine! ...
Thats good data. I will compare heating COP (which doesnt seem too bad) with mine later today and make some observations, but I think its worth takin...
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Degrees of Separation
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