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JamesPa
@jamespa
Moderator
Illustrious Member
Joined: Apr 3, 2023
Last seen: Nov 10, 2025
Topics: 18 / Replies: 3326
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RE: Big Changes Coming to Our Heat Pump System

As a mere consumer I wholeheartedly agree with both of these. The question is how? What, if anything, is being done and by who? What, if anyth...

2 months ago
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RE: Big Changes Coming to Our Heat Pump System

Not a clue quite frankly, other that to disguise problems which otherwise might lead to call outs. It seems still to be endemic sadly. @editor has...

2 months ago
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RE: MCS certificate SCOP vs real-world performance

MCS:3.65 Reported by Vaillant: 3.96 (heating only); 3.89 (heating plus DHW). Vaillant 7kW, radiators, FT 44@-2, room temp ~20.5, open loop, no buffe...

2 months ago
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RE: delta T = 10 (Daikin)

I think, based on what others have said here, that the Daikin adjusts its water pump to get the required DT. Others have said that you are asked some...

2 months ago
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RE: Big Changes Coming to Our Heat Pump System

I'm intrigued by this exercise, so far you haven't reported that it was necessary to do anything other than the obvious. If thats the case then its y...

2 months ago
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RE: Help me keep the faith with my air source heat pump installation

Water pump will certainly make a hum (which could conceivably be carried by the pipes) but the description does sound more like the compressor. It's ...

2 months ago
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RE: Help me keep the faith with my air source heat pump installation

Yes thats the whole point of the flexis as regards transmission of externally generated vibration to the indoors. however its possible, I suppose, t...

2 months ago
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RE: Help me keep the faith with my air source heat pump installation

The answer contractually is whoever you contracted with for the the work which included the fitting of the breakers (normally whoever you paid for sam...

2 months ago
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RE: delta T = 10 (Daikin)

So far as I can tell designing for DT5, which is 'the norm', is a convention not an absolute. I have seen people argue that a higher DT is preferable...

2 months ago
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RE: External stat issue

WC curve best discovered by experiment anyway as any loss calculation (on which a theoretical determination of the WC curve would be based) is at best...

2 months ago
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