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Kev M
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Kev M
@kev-m
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Joined: Mar 5, 2021
Last seen: Jan 8, 2025
Profile Activity
Topics: 10 / Replies: 1266
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RE: Vaillant Arotherm yeild and COP readings

@yogabob I edited your post to split into paragraphs. A lot of people wouldn't bother reading it as it was (I nearly didn't!), which would be a sh...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Keystone COPs? I'm not getting the efficiencies I expected on my Ecodan.

@cathoderay, That particular graph displays a minimum of 24 hours and is presumably designed to show a long term picture, where it may be useful to ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Some big changes are coming to heat pump installation training

Just to be clear, the above comment refers to "The industry did try to do exactly what you are asking and came up with the buffer tank, system separat...

2 years ago
Forum
Safety, Regulations, Tools, Plumbing & DIY Installations
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RE: COP Less than 1 !!!

@pipcart When the ASHP COP is tested it's not done in a real house but on some sort of test rig. On the test rig, even though the flow is only 20 d...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: COP Less than 1 !!!

Hi @pipcart, Your ASHP is barely ticking over and is almost certainly starting and stopping a lot. It has a baseline power consumption just to keep...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Some big changes are coming to heat pump installation training

@heacol fair enough, although that sounds like an attempt at a one size fits all model, which isn't right. Good luck with what you're doing; the ...

2 years ago
Forum
Safety, Regulations, Tools, Plumbing & DIY Installations
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RE: Ecodan Melcloud temperature control with compensation curve

This is much harder now! A few questions: Are you letting WC control room temperature or are you using thermostats; either Mitsubishi or 3rd party? ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan Melcloud temperature control with compensation curve

I was fed up of Derek getting all the plaudits, this is just the start for me!! 😆

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Some big changes are coming to heat pump installation training

@Derek-M understood what I meant. I wasn't referring to heat losses, I was referring to standard system designs for different situations that could b...

2 years ago
Forum
Safety, Regulations, Tools, Plumbing & DIY Installations
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RE: Ecodan Melcloud temperature control with compensation curve

I assume you have tried tapping on the greyed out options? If they are available, doing this un-greys them.

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Some big changes are coming to heat pump installation training

The housing stock is indeed very different. There are extremes; houses that will always need a bespoke approach with individual, expert input. But t...

2 years ago
Forum
Safety, Regulations, Tools, Plumbing & DIY Installations
Reply
RE: Mitsubishi Ecodan & MEL Cloud

@Leftbacks, it's hard to say but most ufh systems seem to work around 35-40 degrees. Maybe others with ufh can comment. My house was built in 1990 an...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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