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Last seen: Sep 23, 2026
It uses all the one minute data positive and negative except if the diverter is set to dhw.. Energy for defrost comes from the house so should be and...
If I understand the graph correctly the 60min average energy out seems to be around 8kW. Is this right?
Thanks for the data. I have taken this and plotted various adjustments. Here are the key results. Each point is one noon-noon measurement. I ...
yes it has thanks. I was apparently logged in, but I logged out and logged back in and this magically appeared
Clearly its either undersized (which is unusual but possible) or badly set up. Installer needs to take responsibility unless someone else did the cal...
Are you sure that the problem with defrost cycling is not caused by the LLH? Two reasons: 1. The LLH will in all probability reduce the FT to t...
Its unlikely to help unless you have a specific problem which extra system volume is likely to fix (eg short cycling). And if you have got a problem ...
Sorry but that sort of says it all. On another forum that I dip into the Grant/Chofu unit gets a generally good review, although most seem to recomme...
The setup is design specific and a starting point should be the design flow temp at the desing min temp, but I guess you dont have these (or they were...
Sounds to me like an instant 10% penalty in efficiency, or more, for little tangible gain. Unless its properly controlled there will be mixing, which...
OK step by step. The bad news us that your installer is that clearly either ignorant about heat pumps or a cowboy or both. The good news is that you...
There have been some cold days recently so on those you would expect low cop. However operating at a fixed flow temp of 60C is sheer madness and will...
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Degrees of Separation
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