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cathodeRay
cathodeRay
@cathoderay
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Joined: Feb 28, 2022
Last seen: Oct 21, 2026
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Topics: 18 / Replies: 3075
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RE: Do setbacks save energy without compromising comfort?

@harriup - thanks, especially for posting the charts. We now have data from three installations, yours mine and @kev-m's, and they all show some form ...

3 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

I wasn't suggesting it doesn't match demand in that quote, it fact the opposite, it does match demand in the conditions I was talking about. However, ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

Here it is 24 hours from noon yesterday to noon today:

3 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

Will post the data after I have had some lunch.

3 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

My point is we are not in these conditions, warm house in mild conditions, where we know about and expect cycling as the only way further to modulate ...

3 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

It's not on a graph, it's in the raw data, which appear to suggest my heat pump spends most of it's time running at the 'min' capacity level, even whe...

3 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

Certainly, or it could just be my Midea unit. The problem is that unless and until we have more data, we just don't know. I'm hoping others who coll...

3 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

I can't actually find any of these settings in the Midea Engineering Data manual. There is something called dT1SH, which 'sets the temperature differe...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

Last night it was on Weather Compensation, no setback.

3 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

Well, I will have one last attempt. Most of your theory doesn't fit the data. In the most recent chart I posted, which clearly shows cycling, the OAT ...

3 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

But how does it measure, and respond to, the demand? And why is it currently (if my above assessment of what the data represents) choosing to run at '...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

This is the point that I failed to get across to @derek-m, whether we like it or not, as far as the heat pump is concerned the OAT, is what it is wher...

3 years ago
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Air Source Heat Pumps (ASHPs)
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