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Oswiu
@oswiu
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Joined: Oct 19, 2022
Last seen: Feb 5, 2024
Profile Activity
Topics: 2 / Replies: 119
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Reply
RE: Measuring your COP

Ecodans (and possibly the new Samsung) have the best approach with this in my opinion. They have one rating, and they guarantee that rating down to a ...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Real world COP vs. manufacturer claim

Air-to-Watergate?

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Measuring your COP

I disagree. I think this should be the job of the regulators/MCS. If it's not their job to ensure only high quality systems are installed, then what i...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Does your heat pump calculate and provide you with a COP figure?

@scrchngwsl there is an API. This python repo might be a good starting point/p> There are also integrations for Home Assistant and Node Red that I'v...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Problems with Daikin 18 kW High Temp ASHP

@bramshot What model is your heat pump? It is weird that it can't reach high temps if it is advertised as being able to do so. Also, what's the ve...

4 years ago
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Air Source Heat Pumps (ASHPs)
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RE: How important is flow/return temp and what can we control?

I don't have anything original to contribute, but have you seen this thread with the same problem and a similar if not the same heat pump?/p>

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Old Daikin altherma instructions

It'll be on the side of the heat pump. Daikins seem to normally start with 4 letters, the first of which might well be an E, but don't hold me to that...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Problems with Daikin 18 kW High Temp ASHP

@bramshot I would just try knocking the weather compensation curve down a little bit. It'll cost less to run, probably have to defrost less, and if yo...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Problems with Daikin 18 kW High Temp ASHP

I can't comment on other aspects, but heat pumps do have to work harder at temperatures close to freezing with high relative humidity. This is reflect...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan QUHZ - the only ASHP which thrives on high delta-T?

The details they've sent me include a volumiser, so not hydraulic separation, but some extra volume, but that's assuming they don't actually mean a bu...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan QUHZ - the only ASHP which thrives on high delta-T?

The Daikin system I'm getting installed has a fixed DT of 8C with radiators. That should provide about 1.7kW per radiator assuming the thickness of th...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: How can I get my Daikin Altherma 3R to be more efficient with Economy 7?

Firstly on hot water, obviously just schedule it to come on overnight, perhaps in addition to whatever your current schedule is. Next on using your...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
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