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Old_Scientist
@old_scientist
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Honorable Member
Joined: Jun 16, 2024
Last seen: Apr 26, 2026
Profile Activity
Topics: 6 / Replies: 399
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Reply
RE: My 2.5kW array is only putting out 1kWh in an entire day

I generated 6.4kWh on Saturday 2.8kWh on Sunday and 7.4kWh yesterday from my south facing 3.65kWp array - Saturday and yesterday were very good days w...

1 year ago
Forum
Solar Photovoltaic (PV)
Reply
RE: Samsung ASHP owners what have you set your weather compensation to?

I'm running a 'flat' WL curve of 32C (32C @ 15C OAT; 32C @ -2C OAT), and I then manually adjust LWT up and down on the controller heating screen. At t...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Samsung weather compensation oddities

I don't know how having two zones may complicate/affect things, especially as presumably the two zones may require different flow temps? With #2091-...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Samsung weather compensation oddities

@cloudclear sounds like a good plan. I do not have any monitoring, so am simply collecting data and recording through studious observations. FSV #20...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Samsung weather compensation oddities

I believe the guys above have nailed it. I have a similar 12kW Gen6 Samsung and observe exactly the same. The heat that the ASHP is producing has to...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Determining correct flow rate?

That would be the more logical place to fit them, but ours is installed on the main return pipe back to the heat pump, so affects both DHW and heating...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Determining correct flow rate?

@rhh2348 My system has a 50L volumiser fitted in the main 28mm return pipework, which at the end of the DWH cycle will also contain 50L of hot (55C) w...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Determining correct flow rate?

This is exactly what I observe with my oversized Samsung when I run it in always on mode via the room stat calling for heat. If I set the WC curve t...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Determining correct flow rate?

Optimising flow rate for DHW heating is something I'd been thinking about over the summer, as we are only heating DHW at that time. My simplistic th...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Determining correct flow rate?

I don't I'm afraid - you could try looking up the specs of the Grundfos pumps online. My own system uses fixed flow rate Wilo pumps, with 3 differen...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Determining correct flow rate?

Have a look at John Cantor's excellent online calculators here (specifically the flow rate calculator): Heat (kW) = Flowrate (Litres/sec.) x 4.2 ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pump monitoring - what are you using?

@njt As the Cosy peak rate (4-7pm) immediately follows a cheap slot, your battery should be fully charged and at least should avoid importing during t...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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