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Old_Scientist
@old_scientist
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Joined: Jun 16, 2024
Last seen: May 21, 2025
Profile Activity
Topics: 5 / Replies: 152
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RE: Solar Power Output – Let’s Compare Generation Figures

@transparent I have an Emlite ECA2 MID-approved meter fitted which records solar generation (available for around £40). The meter records slightly hig...

1 month ago
Forum
Solar Photovoltaic (PV)
Reply
RE: Performance of Heat Pumps in Mild Weather

Agree with the above. Without knowing what the modulation curve of any given heat pump/compressor looks like, about all we can do is assume the manufa...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Performance of Heat Pumps in Mild Weather

@heatgeek I have a very over-sized Samsung (12kW gen6, with a heat loss of maybe 4-5kW). We suffer with poor dT which struggles to get above 3C. Are y...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: What happens when the outside temperature exceeds the upper WC point?

Yes, that's the default value, but can be set between 10C to 35C.

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: What happens when the outside temperature exceeds the upper WC point?

@bontwoody on my gen6 Samsung it's FSV #4013 Heating Off Temp, and by default is set to OAT of 35C (I have reduced mine to 25C). Like @ashp-bobba says...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: What happens when the outside temperature exceeds the upper WC point?

I cannot speak for other manufacturers, but I know Samsung's WC 'curves' are very simplistic with just two set points with a straight line between, an...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: The gas supply that was!

Not an issue for us as there is no mains gas in our village despite an LNG terminal just down the road and a major 1m diameter gas main for the LNG pa...

2 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Solar Power Output – Let’s Compare Generation Figures

Our March generation was 133% of our PVGIS prediction at 400kWh generated versus 300kWh predicted from our south facing 3.645kWp array. Now winter i...

2 months ago
Forum
Solar Photovoltaic (PV)
Reply
RE: Help me keep the faith with my air source heat pump installation

As @bontwoody says, if they are inside the heated envelope of the house then it becomes a question of whether it is more beneficial for more of the he...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is it worth siting panels on an East facing roof?

Gutted for you. We are waiting to hear on our application to increase our solar array to 7.2kWp and add a Tesla PW3 battery (max 11.04kW export), but ...

2 months ago
Forum
Solar Photovoltaic (PV)
Reply
RE: Is it worth siting panels on an East facing roof?

General wisdom is to oversize the array slightly, so if your export limit is 5kW (and you have or can add a 5kW inverter), then being able to generate...

2 months ago
Forum
Solar Photovoltaic (PV)
Reply
RE: Is it KISS or constant – weather compensation vs. set flow temperature?

We ran our radiations at anywhere between 30-35C over winter. At 30C I struggle to tell they are on. If I place my face over the top of the radiator, ...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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