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Derek M

@derek-m

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Illustrious Member

Joined: Mar 4, 2021
Last seen: Sep 19, 2024

Topics: 7 / Replies: 4403

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RE: Do setbacks save energy without compromising comfort?

@cathoderay Minute by minute actual OAT data is required so as to compare this to your Midea OAT data, averaged data is of no use. The reason I am...

2 years ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Do setbacks save energy without compromising comfort?

@cathoderay If you still wish to have an independent OAT sensor, you could consider coating an MD02 with circuit board lacquer and then putting it w...

2 years ago

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Air Source Heat Pumps (ASHPs)

RE: Do setbacks save energy without compromising comfort?

I may have suggested trying a fixed LWT for a period of time to stabilse the system, in a similar manner to switching a swinging industrial control sy...

2 years ago

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Air Source Heat Pumps (ASHPs)

RE: Do setbacks save energy without compromising comfort?

What I am suggesting is to not have a setback, but keep your AA system, since this should automatically request the lowest LWT that meets demand whils...

2 years ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Do setbacks save energy without compromising comfort?

Running the heat pump constantly at lower LWT, should help reduce the cycling and defrosting, until you can do something to alleviate the 'cold well' ...

2 years ago

Forum

Air Source Heat Pumps (ASHPs)

RE: EcoDan Cold Radiators

Have you resolved your problem? Feedback is always welcome.

2 years ago

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Air Source Heat Pumps (ASHPs)

RE: Flow temperature up and down like a yo-yo

Have you resolved your problem? Feedback is always welcome.

2 years ago

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Air Source Heat Pumps (ASHPs)

RE: Do setbacks save energy without compromising comfort?

@cathoderay I think that you will find that the cycling is most likely due to the 'cold well' effect, which appears to be shown by the raw data. W...

2 years ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Do setbacks save energy without compromising comfort?

Excellent data once more. It would be interesting to see how the OAT value on the chart compares with OAT readings from local weather stations.

2 years ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Ecodan Room Temperature Mode

I'm afraid that I don't have details concerning the AA algorithms, but a normal industrial type control system would probably react in the same manner...

2 years ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Do setbacks save energy without compromising comfort?

Thanks Kev, no rush. Could you also please add the RWT values so that I can ascertain when the compressor is running.

2 years ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Do setbacks save energy without compromising comfort?

@kev-m Hi Kev. I'm going to run the raw data that you kindly supplied, but I need to set the initial conditions for your system. Could you please ...

2 years ago

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