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JamesPa
@jamespa
Moderator
Illustrious Member
Joined: Apr 3, 2023
Last seen: Nov 7, 2025
Topics: 18 / Replies: 3302
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RE: Midea ASHP – how to set weather compensation

Unless the rooms are very cold they are still being heated somehow (ie by heat transference) so I wouldnt make this extrapolation however.... Abs...

1 week ago
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RE: New build installation query

Unfortunately not. Maybe the website interprets any jpg as an image and renders it as such, reducing resolution in the process. Perhaps if you add t...

1 week ago
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RE: New build installation query

Thats a blessing, at least its in the middle. If you can post the files as opposed to pasting the images I will take a look at them, it should be eas...

1 week ago
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RE: Daikin Octopus installation update - I saw my first defrost. 😍😂

Thats encouraging. As I say normal motion in pipework should be inaudible, its valves and bends that cause noise. Swept bends are better than elbows...

1 week ago
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RE: Mitsubishi Ecodan R290 10kW performance

@ecoste In that case there is something very wrong. 2.4kW consumption would normally require the heat pump to be running nearly flat out. If its ...

1 week ago
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RE: New build installation query

They are better but still difficult to read. Can you please upload the image files rather than pasting them as images, then they can be downloaded at...

1 week ago
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RE: New build installation query

Nice neat plumbing job! I cant see the plant room on the rather low resolution plan. Where is it? Also the key drawing 12327-1000030975 is too lo...

1 week ago
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RE: Daikin Octopus installation update - I saw my first defrost. 😍😂

ah - not the greatest routing. Is it possible to insulate and/or isolate the pumps from the structure?

1 week ago
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RE: Mitsubishi Ecodan R290 10kW performance

Not sure I agree with that. Thermodynamically lower deltaT=higher average emitter temperature for any given flow temperature = lower FT needed at t...

1 week ago
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RE: Mitsubishi Ecodan R290 10kW performance

This looks odd: Heat transferred = F*DT*.0633=18*3*.0633=3.4kWPower consumed = 2.4kW   3.4kW delivered to the house is not unreasonable at ...

1 week ago
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RE: Help me keep the faith with my air source heat pump installation

I think there may be some oddities about the COP reported by the app at present and possibly going forward. My app (v3.31 build 24435) no longer se...

1 week ago
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RE: Help me keep the faith with my air source heat pump installation

Is it still cycling, at what FT/OAT? Mine appears currently to be at the 'sour spot'. OAT about 11C, still just cycling, COP 3.9, target FT ~32. I...

2 weeks ago
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