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SUNandAIR
SUNandAIR
@sunandair
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Noble Member
Joined: Dec 30, 2022
Last seen: Jul 9, 2025
Profile Activity
Topics: 5 / Replies: 495
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?

That’s a really good question. Ive been trying to find a clearer explanation of what specifically is the purpose or effect of increased volume in the ...

4 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?

@editor I have been persuaded by the argument that you have been stating that the correct placement for the volumiser should indeed be on the flow sid...

4 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Setback savings - fact or fiction?

@cathoderay I see you are continuing to misquote from the thread below. What you are repeatedly failing to see is that my thread is about making ...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Setback savings - fact or fiction?

@cathoderay Im just not sure what you are trying to find out beyond what already is showing as realistic savings. Also I do disagree with a statement ...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Setback savings - fact or fiction?

I thought we’ve been here…. It’s fact isn’t it?

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Auto adapt and the curve

I ought to make a correction - I said it shuts down when it passes the set temp. What I meant to say it modulates as it reaches the set temp. And as @...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Auto adapt and the curve

I think your current room temp chart confirms that you need to be much higher than 30c flow temp. It is reaching your target room temp. And as is ofte...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Auto adapt and the curve

@westkent it’s defrosting when the flow temp line (in blue) drops below the return temp line. (In black) The flow temp rapidly drops because the de...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Auto adapt and the curve

@westkent hi i can see now that at zero OAT these charts are showing defrosting. There seems to be a consistent deltaT. Does you house get up to the...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Auto adapt and the curve

Was this chart taken when the house was cold? I think it would help others to interpret this if you can give OAT outside ambient temperature and insi...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pump's integral circulator pump

From an experience point of view I have been watching our fixed flow rate Ecodan operate for a few years now and have seen how versatile its modulatio...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: buffer/volumizer cupboard space eater, do i need one?

Here might be a case in point James. Here are 2 hourly charts showing flow and return. These are supposed to be operating at fixed flow 34C and...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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