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Last seen: Aug 16, 2026
I apologise if this has been covered already but have you got any way to sense check loss calculations eg from past usage. The two, three hour full p...
@heatgeek I feel this may all be heading towards a conclusion that there are a set of trade offs in compressor modulation range and cycling. Without ...
Thanks for that. The ecoforest graph of cop Vs compressor speed explains a lot. Perhaps it even explains how Daikin appear to do a single compressor...
1.8kW is at 7C, the more interesting figure I think is the min at say 12-15C. That doesn't appear to be specified for the Hitachi, but for the heat p...
@heatgeek @robs I was going to say exactly what @robs has said. The interesting metric is the ratio between min output at high OAT/low FT and max ou...
2 port buffer/volumiser is fine, will help with defrost/system volume and no downsides. 2 ports good, 4 ports bad! The general rule for rads is to ...
The full sentence was "larger radiators = lower flow temperature and larger system volume. The latter certainly would be expected to reduce cycling...
Thank you for pointing that out, I should have commented on this also (but as you say there is a lot here). I did note this comment, am not disputing...
Further to the above I discovered a bit more/had an additional thought about Daikin compressors. Firstly Daikin do make their own compressors so its ...
I must say Im also coming to the conclusion that there is a problem of this nature. OP has optimised the initially high flow temperature and its now ...
Very much agree. I think OP is over-concerned about this because, as you say, cycling is 'designed in'. Also very much agree We may be spli...
'and thus its capacity' assumes that output is a linear function of modulation frequency. But I dont think thats the key point so lets not argue over ...
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