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Last seen: Sep 9, 2026
Actually, we do know the LWT and RWT when the heat pump is off, see my charts, and so can estimate the radiator temp, say an average of the LWT and RW...
@derek-m and @jamespa - it might help if I clarify how I do the calculations. The minute data has amps, volts, LWT, RWT and flow rate. I have assume...
Have a look at my recent postings showing observed energy use with a setback and an assessment of energy saved. There is a small amount of whatiffery ...
@mike-h - the key thing is that standard weather compensation for most heat pumps only takes account of the outside air temperature, and sets the LWT ...
Depends what you mean by cheap, but the short answer for most people is no. Energy in isn't that complicated, but energy out is, as is the monitoring ...
Same here when it gets below to around 5 degrees and below, which is why I am surprised I didn't have any defrost cycles last night. Surely that ...
The coldest night of this heating season so far, briefly got down to 2 degrees outside and 16.4 inside, but by 0712 hours the IAT was back to 18 degre...
I finally found something in the minimalmodbus manual on how to read individual bits from a 16 bit register: Reading individual bits from a 16-bit...
@derek-m - thanks. There are lots of versions of this table around, and they are all slightly different. Here's a scan of the same part of the table f...
@derek-m - I am very wary of writing to any register until I am absolutely sure what I am writing to, hence the attempts to reliably read the data bef...
@derek-m - I agree, see above, the efficiency loss caused by raising the LWT matters, but I still think empirical data is the best way to determine ho...
I have in fact covered this elsewhere, things do get rather scattered all over the place, and @derek-m also covers it above. It is one of the factors ...
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Thank you @trebor12345
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Panasonic Free Multi Z and Etherea Internal units.
My prospective installers have suggested the Panasonic ...
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RE: Next steps on my ASHP journey: Radiators and Pipework
Great. You just need to find a way of cranking up your...
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RE: Heat Pumps Without Grants: Would You Have Installed One & Will You Now?
We had two heat pumps installed without Govt funding. H...
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My Adapt is finally installed and running! Almost a yea...
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RE: Being screwed over by Volkswagen Audi Group
Thanks, @batpred. That integration is the one I have in...
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RE: How Accurate Is My DIY Heat Loss Calculation?
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