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Last seen: May 25, 2026
Yes, also the higher OAT end is possibly a smidge high too. Also that experiments often need repetition to incorporate discoveries. &n...
Sorry that was less for you and more for others that have suggested that your findings provide a general proof of setbacks saving energy/money. &nbs...
TBH I'm not sure saving energy has been proven yet (see below) but maybe in your data there is proof. As always there is an n=1 aspect to this, it mig...
Hi @cathoderay Thanks for the analysis! This last graph possibly shows the reason for the reduced energy usage at lower OATs. The no setback IAT is...
As the owner of a 8kW Ecodan R290 maybe I can help. While we don't use it, and just use weather compensation, I believe the Auto Adapt mode can do ...
We've had an Ecodan R290 for 18 months and it's been reliable and efficient (SCOP of 4.8+). The Vaillant spec says the Aerotherm Plus is 450mm deep...
I answered that days back, I even provided a summary of my answer (reproduced below). So the two similar days with setbacks would be expect...
I changed the pump power to the actual value to see if the energy consumption estimate improved but it is still woefully inaccurate. As I have an accu...
I posted an image from the FTC6 installer manual that clearly shows per pump power settings (like our FTC7) and a perfectly reasonable assumption of "...
@pauli For the conventional approach, have you considered the 4kW Grant R290 heat pump? The specs say that it can modulate down to 1.25kW output (s...
The answer was in two parts in my reply, the second part that also answered some of your other points was: "If you effectively eliminate the over re...
Can I ask where the 2.8kWh figure comes from? I checked the FTC6 manual and it has the same settings for pump power as the FTC7 (see below from the FT...
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