Last seen: Jul 14, 2025
I have been trying to work that out from the photos. Still not sure, but like you I suspect that there may be one and it might account for a 10%+ eff...
How odd. Or maybe they have now realised that they are in a competition!
... Isn't great advertising! Or is that too cynical?
Honestly no idea. The simple thermodynamics say that lower DT is always better. I have not heard a coherent explanation why we design for DT 5 not...
Good I guess these operate the actuators on each loop but maybe one on each manifold operates the zone valve? If tyhere is nothing else to set high ...
No, that wouldn't account for the flow temp being lower than the return temp. This shows that the water pump continues to operate and as a result the...
I think what will actually happen is that the deltaT from flow to return will decrease. There may be a slight increase in energy to the house (becaus...
If they arent permanently open then yes they would cause a problem (unless they are all wired to close simultaneously when the DHW comes on - instead ...
Sofaik all others do the same, ie they operate the refrigerant circuit in cooling mode to effect defrost. They thus cool the house and warm the heat ...
Are you sure. Where does the defrost energy come from on that case? Most stop the fan but leave the primary pump going thus extracting the defrost ...
Personally I would want them inside the heated envelope if possible. Then the heat loss is useful during the heating season. Obviously its a bit sit...
I persuaded my installer that heat loss from the adjacent hallway plus steam when you actually take a bath/shower was sufficient (in order that we did...
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