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JamesPa
JamesPa
@jamespa
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Joined: Apr 3, 2023
Last seen: Aug 14, 2026
Topics: 27 / Replies: 5232
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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 ...

11 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...

11 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...

11 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...

11 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...

11 months ago
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RE: How to choose Towel Rails for an ASHP

Why? To stop them acting as a bypass?

11 months ago
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RE: How to choose Towel Rails for an ASHP

So far as I have been able to establish towel rails are essentially useless for low temperature heating, they simply dont emit sufficient energy. In...

11 months ago
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RE: Testing new controls/monitoring for Midea Clone ASHP

@cathoderay, @old_scientist I think @old_scientist is onto the right idea in terms of explanation. Can you remind us where the sensor is on the Midea...

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

Crazy large and unexplained so far as I know, I had heard Daikin recommend this. 10% efficiency penalty compared to DT of 5 (because average emitter t...

11 months ago
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RE: Testing new controls/monitoring for Midea Clone ASHP

In a way I would like to agree with the final conclusion, but I can't yet. The transitions with switch on and off weren't spikes, they were shifts so...

11 months ago
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