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Old_Scientist
@old_scientist
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Joined: Jun 16, 2024
Last seen: Aug 18, 2025
Profile Activity
Topics: 5 / Replies: 199
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RE: Solar for heating DHW

Similar situation here, although slightly lower numbers as I have a 12kW ASHP and a 3kW solar inverter. In the summer*, I try to limit the power dra...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat Pump starting current

I have seen mentioned two things that may help alleviate the effects of defrost cycles. The first is having sufficiently large thermal mass within t...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Investment or not Solar/Battery instllation

I'm not sure I follow. I have a 12kW Samsung ASHP, and starting from cold, which we do most mornings as we often switch off overnight, the system norm...

6 months ago
Forum
Solar Photovoltaic (PV)
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...

6 months 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...

7 months 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-...

9 months 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...

9 months 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...

9 months 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...

11 months 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...

11 months 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...

11 months 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...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
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