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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Aug 26, 2025
Profile Activity
Topics: 17 / Replies: 2703
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RE: Vaillant 7kw vs Samsung 8kw gen7

75C for the Vaillant. This is principally a function of the refrigerant and most if not all R290 heat pumps will do 70-75. You wouldn't want to oper...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Digital Showers and lower temperature hot water

Coil probably not large enough, although this can be overcome by 'plate loading' ie fitting a phe and pump to replace or supplement the coil. I deba...

6 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Vaillant 7kw vs Samsung 8kw gen7

I have the Vaillant. Pros: Compact Excellent and very flexible controller, much more so than Samsung appears to offer. Definitely no need for e...

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

I agree. I agree (how could I disagree!) and its the basis of any of my arguments and the occasional attempt at simulation.

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: advice on excessive shortcycling and overall efficiency

If it is in series (ie both ports connected to the flow not one to the flow and one to the return) I cant see why not. Its not really like another em...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: advice on excessive shortcycling and overall efficiency

Some further thinking on where to connect the buffer is emerging on this thread/p> The key take away is to put it beyond the DHW/Space heating diver...

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

I think the argument for the return is to avoid any chance that it reduces flow temperature and thus compromises efficiency. But it shouldn't if well...

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

SOFAIK it doesn't have to. My understanding is that there is nothing magic about 5C, its just a sensible design value in most domestic situations so ...

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

I cant believe I didnt do something similar at some time with your data. Looking back I did, this is 19/9/23-3/12/23, the units will be degree-minute...

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

Potentially a significant finding though since the expectation from the physics is that energy use is proportional to the difference. However are the...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Page 66 / 228
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