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Last seen: Apr 8, 2025
I've just checked the heat loss calculation for my system (7kW Arotherm+) and it estimated 8.3kW at -2.8C. I reckoned that was high compared with the ...
You should also be able to set an outside air temperature at which the system will turn off.
According the the Vaillant app, my 7kW Arotherm+ produced 7.6kW when the outside temperature was -7C.
My 7kW Arotherm+ normally runs at 1200 litres/hour but I've seen it show 1800 litres/hour when doing the DHW. It may also use the latter speed when ge...
Some points arising from comments above: 1. The heat pump can't defrost and produce heat at the same time. It's the process of extracting heat from ...
That looks good. I note the best practice of first fitting the pipe insulation and then clamping the insulated pipe to the wall - something that my in...
Winter is a bad time for solar generation. This past winter has been gloomier than normal and if your panels aren't facing south or are vulnerable to ...
I've also got some potentially relevant data because I bought a pair of Elitech recording temperature sensors and fixed them to the flow and return pi...
Definitely not A or G which are in the DHW circuit as that creates a lot more water to heat up to DHW temperature when heating the DHW. My buffer tank...
50 litres/p> But a flow temperature of less than 35C must be a major contributor to the good COP.
I think you should be aiming for lower (<40C) flow temperatures and an SCOP nearer 5. You might need some bigger radiators than currently proposed ...
I'll rock the boat as I've got a buffer tank as part of an installation of similar size to what is proposed and reckon that it's one factor in getting...
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Current metrics - DHW target set to 47c
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