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Last seen: Jan 29, 2026
I found this schematic in the Midea engineering data document. The basics design can viewed as consists of four parts: 1. A compressor, condenser, f...
When the heat pump starts from cold the LWT and RWT are both low, therefore it does not have to produce very high temperature output. I’ve included th...
I would have thought that in the context posted it was obviously the power shown on the graphs rather than the surrounding summary data that I was dis...
Well, I beg to differ. The important thing is to understand how code is designed. It seems to me the COP is irrelevant once the compressor stops but t...
There is a setting for how long after the DHW reaches the required temperature to run the pump (defaults to 5 minutes but can be read). The DHW temper...
I posted some photos of the minute by minute ASHP circuit power readings during the startup of the heating a few days ago. I doubt it is very helpful ...
One day we won’t be able to have electric motors, transformers or anything that causes a problem. We will probably have to have our own storage and on...
@transparent Using the billing information of 1.32kWh this morning when the 5kW inverter switches to battery charging at 00:45 and with an assumed b...
Yesterday the electrician completed the distribution board (consumer unit) upgrade started by having solar+batteries and Zappi EV charger installed at...
I had all my 22 rads replaced with mostly triples and a few double. I see P1 rads listed above. My Midea 12kW ASHP mostly runs at 40c leaving as the t...
@transparent, I agreed the time of GO with the installer and we then inset it 15 minutes. I know from billing that the timing is accurate. I have a...
@transparent My installer has set the system to charge during a window from 00:45 to 4:15. Everything runs from the grid in that period even if the ba...
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Degrees of Separation
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 , 1 hour 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 , 7 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 , 12 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...
By Toodles , 4 days ago
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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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