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cathodeRay
cathodeRay
@cathoderay
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Joined: Feb 28, 2022
Last seen: Nov 11, 2025
Profile Activity
Topics: 17 / Replies: 2343
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RE: Midea ASHP – how to set weather compensation

Yes, I see that now, but I wonder what its internal diameter is? A very short length may not matter that much, but longer lengths may impede flow. My ...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Midea ASHP – how to set weather compensation

Agreed. The WC and thermostat settings only become relevant when the system is running, which can't that far away now, but we haven't got there yet. ...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Midea ASHP – how to set weather compensation

I very much doubt that! I am talking about the primary pipework to and from the heat pump, inside the inadequate black insulation. In a 'normal' insta...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Midea ASHP – how to set weather compensation

@pash44pump - thanks for the photos and 'scope' document. Both the installation and the 'scope' document appear somewhat chaotic, and, so far as I can...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Midea ASHP – how to set weather compensation

@tim441 - an excellent succinct summary. @pash44pump - re-routing the pipework may well make sense, a one off cost vs a never-ending drip drip drip ...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Midea ASHP – how to set weather compensation

@pash44pump - good, we're on the same page (screen) on the wired controller. As you can see from the chart I posted earlier, the LWT/RWT often vary a ...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Midea ASHP – how to set weather compensation

If it were me, I would start with everything on/open, running on weather compensation, and take it from there (once the weather is cold enough to need...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Midea ASHP – how to set weather compensation

This suggests that the heat pump was not running on weather compensation (WC) at the time you recorded these values. With WC you don't set the (flow) ...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: The good, the bad and the not that great – my heat pump installation

Sorry to resurrect this thread, but it is sort of relevant so on balance putting this here. But how do you actually adjust the pressure? I have exac...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Getting the best out of a heat pump - is Homely a possible answer?

I missed your 22nd June post on this. I am sure it can be done in HA as well, but I use a standalone script that runs once an hour, checks the IAT and...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Midea ASHP – how to set weather compensation

@pash44pump - the installers heat loss calculations appear to indicate a total heat loss of just under 9kW, which seems rather on the low side for the...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Midea ASHP – how to set weather compensation

They look decidedly skimpy to me. A proper heat loss estimation (which is all they are - see many posts passim) uses a survey of all surface areas and...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Page 22 / 197
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