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SUNandAIR
SUNandAIR
@sunandair
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Noble Member
Joined: Dec 30, 2022
Last seen: Nov 2, 2025
Profile Activity
Topics: 5 / Replies: 499
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Reply
RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

My original post was as follows….

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

Thanks for the nod James Hopefully my hand drawn “spreadsheets” are working now…. and the more detailed spreadsheet….. I hope the numbers are ...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

Thanks for the official documentation info @transparent . I hadn’t read the most recent offering…. Is it me or does it really avoid tying anything dow...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

not sure I agree… most of the sizing issues can be done at the design stage as a calc exercise. And as you and I have discussed previously… the design...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

With due regard for the title of this topic… This debate has been brewing for quite a few weeks now. It certainly asks some questions of the standar...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan 6kW - is it "cycling", or normal operation?

@clockworks while your sorting your wireless controller I have time to write a post on your rad capacity and the correct maths for sizing. So maybe l...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan 6kW - is it "cycling", or normal operation?

Hi @clockworks Yes I sent you the charts which showed 3kw minimum output. I was very impressed when you managed to create the same hourly chart a...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan 6kW - is it "cycling", or normal operation?

Hi @clockworks. I was just suggesting the one hour MELCloud graph so it’s more detailed. I think @gary could see what I was driving at.... the actua...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan 6kW - is it "cycling", or normal operation?

Thanks for the description @clockworks, that gives a better picture of your setup. I’m not sure if I’m interpreting your graphs properly but it appe...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan 6kW - is it "cycling", or normal operation?

@clockworks The wireless controller will modulate the HP and reduce output as the HP approaches the target room temp- but only when in Auto Adapt m...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan 6kW - is it "cycling", or normal operation?

The first thing I have seen in your graphs is that opening the TRVs has allowed the emitters to offload more heat, making your home somewhat warmer. I...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan 6kW - is it "cycling", or normal operation?

@clockworks can you confirm is the 900w you refer to consumption or is it output? If it’s consumption then that’s about right… assuming a cop of 3 whi...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
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