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cathodeRay
cathodeRay
@cathoderay
Moderator
Illustrious Member
Joined: Feb 28, 2022
Last seen: Nov 14, 2025
Topics: 17 / Replies: 2346
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RE: Installing a heat pump in a Grade II listed property

@jamespa - first to deal with the point I raised in @bontwoody's thread - the flow rate drops to zero at the start of the setback and stays that way u...

1 year ago
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RE: My horrific Samsung heat pump installation and experience

@iantelescope - I'm sorry, but this is gobbledygook to me. You need to use plainer English, and explain your methods in enough details to allow others...

1 year ago
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RE: Is my setback/preheat doing any good?

I see what you mean, interesting. It is amazing what we can learn from detailed charts.

1 year ago
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RE: Is my setback/preheat doing any good?

It's the initial precipitous fall in LWT that I'm curious about, blue arrow points to it here: The rest of the decline over time is what I would ...

1 year ago
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RE: Installing a heat pump in a Grade II listed property

This is why I mentioned epidemiological observational studies, you have no control over the variables whatsoever. The main way you deal with that nowa...

1 year ago
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RE: Is my setback/preheat doing any good?

@bontwoody - thanks for the replies. Inline probes should be accurate, but at the same time such a precipitous drop seems most unlikely, given the...

1 year ago
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RE: Installing a heat pump in a Grade II listed property

@jamespa - I suspected all along the answer might be 42. Now we have the answer, we can now work out the question, and I think you have phrased it w...

1 year ago
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RE: Is my setback/preheat doing any good?

I think there is at least one thing that isn't right in that chart, the sudden precipitous drop in flow temp when the heat pump turns off. That doesn'...

1 year ago
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RE: Midea ASHP – how to set weather compensation

@iwolf - on my installation there are two flexible connectors connecting the heat pump flow and return to the fixed pipework where it passes through t...

1 year ago
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RE: Installing a heat pump in a Grade II listed property

It does correlate well already, at least the OAT/energy out are well correlated, that's the basis of the empirical method of determining heat loss. It...

1 year ago
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RE: Midea ASHP – how to set weather compensation

@paul436 - thanks, that would appear to confirm what i thought.

1 year ago
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RE: Midea ASHP – how to set weather compensation

Not sure, but I think that may be the inline filter by the heat pump is blocked. Mine has a quarter turn valve to close of the pipework, and then you ...

1 year ago
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