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cathodeRay
cathodeRay
@cathoderay
Moderator
Illustrious Member
Joined: Feb 28, 2022
Last seen: Nov 15, 2025
Profile Activity
Topics: 17 / Replies: 2348
AllTopicsReplies
Reply
RE: Forum updates, announcements & issues

@editor - sorry to be the bearer of bad news, but I am still not getting email notifications for many of the posts made to threads I am subscribed to....

2 years ago
Forum
Introductions, Forum Rules & Updates
Reply
RE: Performance in the current cold snap…

Putting aside the toothless qualities of MCS, it is complicated by other factors. If it had been a privately funded installation, my contract would be...

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

@jamespa I think I am right in saying is of this view, and I do get this point: the heat pump responds to the feedback contained in the RWT. Indeed i ...

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

I know GH has been around for a long time, and generally knows his stuff, though sometimes he does make typo type errors. That said, I am personally g...

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

That sounds in the right range, for a very rough COP at that ambient, perhaps a bit high, see 1200 to 1500 in the second chart I posted above. When th...

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

Unfortunately, neither provides any way to control their speed externally, beyond the push button control on the secondary pump. The primary one has i...

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

@iancalderbank - an update on the PHE inlet and outlet temps after setting the secondary pump to CC3. Took ten readings from each pipe then averaged t...

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

@dons - no, you are not going mad, it is just Midea playing language games! On the wired controller screen, you have POWER CONSUM, which is the total ...

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

In an ideal world, it wouldn't switch itself off. It runs continuously, adjusting the LWT, based on the WCC, to deliver the right amount of heat to ke...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
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)
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