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cathodeRay
cathodeRay
@cathoderay
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Joined: Feb 28, 2022
Last seen: Aug 15, 2025
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Topics: 17 / Replies: 2075
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RE: Midea ASHP Install & Potential Changes

Ideally, you want the room stat set high enough to ensure the heat pump is always on, and all the other emitter controls fully open, to ensure the sys...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Performance in the current cold snap…

Sorry, but I want to be clear about this in my own mind. I think it may be all about what happens during the defrost, and how you account for it (in a...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Performance in the current cold snap…

Yes, I am sure as can be. It is down to simple numbers. The calculated heat loss at -2 is 12.4 kW, a figure that I think is as good an estimate as can...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Performance in the current cold snap…

Sorry, forgot to include this bit. Yes, will try CC3. I'm also going to put the left had WCC baseline back up to 56, at least for the next 12 hours or...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Performance in the current cold snap…

Yes, that is the right document. I absolutely get this, but my hands are tied by the design constraints: small area for rads, fitted the largest we co...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Midea ASHP Install & Potential Changes

I appreciate that, and no harm in doing it, but it helps to have something to focus on, as you have now done. Freedom, who also supplied my Midea he...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Midea ASHP Install & Potential Changes

@dons - the is quite a lot of info there, but not so much in the way of clear specific questions. It might help if you summarised your key questions, ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Performance in the current cold snap…

@iancalderbank - The manual the tables comes from is available online, and can be found using google (midea m thermal mono engineering data pdf). A li...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Performance in the current cold snap…

Looks interesting, thanks for posting, will watch it when I have a chance. The installation meets (exceeds) the airflow requirements in the insta...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Performance in the current cold snap…

@derek-m - I do wonder if it is time to drop the cold well seriously compromises my heat pump hypothesis, on the grounds that it seems increasingly li...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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