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Last seen: Aug 18, 2026
It has cavity wall insulation, and reasonable loft insulation over most of the rooms. All widows are double-glazed. Windows are quite large, but we ha...
Thanks for confirming that what I'm seeing is just "how it is" with the design of the Ecodan. It puts my mind a rest to a degree - not perfect, but...
The graphs I posted yesterday were with all the smart TRVs permanently set to 30 degrees, so the rads were all "open" from about 09:00. This did red...
Outside temperature as reported by the ASHP sensor during the period of the graphs, 8 or 9 degrees. Yes, 900watts is the consumption. Measured ...
I've had it running with all the smart TRVs set to 30 degrees since 08:45 this morning, and it's still cycling. Lockshields are set pretty much rig...
OK, I've set all the TRVs to 30 degrees, permanent, and will see what happens. If it starts getting too hot, I'll reduce the weather curve "offset" ...
I put all the lockshields back to where they were, and refitted all the TRVs. I had the weather curve set 3 degrees higher to see what happened when i...
Yes, I meant dT25 as flow temp of 45, room temp of 20 degrees. I appreciate that I've been trying to run at a lower flow temp than that, it was just t...
It's the PUZ-WM60, R32 model. I have 10 radiators. I did add up all the radiators, corrected for deltaT 25, and it was very close to the desig...
OK, removing all the smart TRVs, opening the wheels fully, opening all the lockshields, and making sure the Evohome controller stays on all the time h...
That does seem to fit with what is happening - the peak flow temp gets to one and a bit degrees above what I'd expect it to from looking at the WC gra...
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Latest Posts
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RE: Where heat loss surveys seem to go against practical reality
I am amazed that there is not something out there to me...
By JamesPa , 3 hours ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
@bobflux The hydraulic simulator is very interesting...
By Rob of York , 8 hours ago
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RE: 7kW EV Charger Options Advice
Thanks. Yes, we have patchy 4G. The only option we had ...
By Rusty , 13 hours ago
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RE: Being screwed over by Volkswagen Audi Group
Thanks, @batpred. That integration is the one I have in...
By Majordennisbloodnok , 1 day ago
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RE: How Accurate Is My DIY Heat Loss Calculation?
@batpred I suspect it will be more this year. I had 9 ...
By AndrewJ , 1 day ago
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RE: Surface mount or bury primaries for heat pump installation?
@jamespa It's rusting 🙂
By tomasmcguinness , 1 day ago
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RE: Glass lined Cylinder for private water supply
Thank you, once again, for your replies. Yes...
By ian33a , 1 day ago
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It’s been out a few days and Amazon has already attache...
By Mars , 1 day ago
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RE: Missing flow temperature in Heat Geek proposal
Yes, and this is another point I agree. We did find a f...
By Batpred , 2 days ago
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RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
A very good point. In effect, the DHW pipework is an em...
By cathodeRay , 2 days ago
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RE: Solar Power Output – Let’s Compare Generation Figures
@tim441 Here are those same three month periods for 202...
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RE: Adding additional Solar Panels to a DC coupled battery system
@transparent thank you for your reply above. As alway...
By Old_Scientist , 5 days ago
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RE: Adventures in heat loss calculations
@rob-of-york — thanks for posting this, all very useful...
By cathodeRay , 6 days ago
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