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RobS
@robs
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Joined: Oct 15, 2024
Last seen: Nov 4, 2026
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Topics: 0 / Replies: 138
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RE: Next steps on my ASHP journey: Radiators and Pipework

@jamespa @rob-of-york is intending to put 3.7kW down some old 15mm copper and needing to use a dT of 7C to do it, so there isn't any headroom. TBH ...

2 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Next steps on my ASHP journey: Radiators and Pipework

Heating pipes don't usually run around the perimeter of a house but forward and back (or side-to-side) from a central airing cupboard, with T-junction...

2 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Next steps on my ASHP journey: Radiators and Pipework

Is the pipework the original, like the radiators? If so then it will be 3/4 inch and 1/2 inch and not 22mm and 15mm. They are narrower internally, 1/2...

2 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Mitsubishi Ecodan FTC6 settings

While @F1p's dongles are great, the FTC can do this itself. It's called Summer Mode and can be found in the Service settings (default password is 0000...

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

Yes, also the higher OAT end is possibly a smidge high too.   Also that experiments often need repetition to incorporate discoveries. &n...

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

Sorry that was less for you and more for others that have suggested that your findings provide a general proof of setbacks saving energy/money. &nbs...

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

TBH I'm not sure saving energy has been proven yet (see below) but maybe in your data there is proof. As always there is an n=1 aspect to this, it mig...

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

Hi @cathoderay Thanks for the analysis! This last graph possibly shows the reason for the reduced energy usage at lower OATs. The no setback IAT is...

6 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Mitsubishi ecodan settings

As the owner of a 8kW Ecodan R290 maybe I can help. While we don't use it, and just use weather compensation, I believe the Auto Adapt mode can do ...

6 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Mitsubishi Ecodan not good enough ?

We've had an Ecodan R290 for 18 months and it's been reliable and efficient (SCOP of 4.8+). The Vaillant spec says the Aerotherm Plus is 450mm deep...

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

I answered that days back, I even provided a summary of my answer (reproduced below).   So the two similar days with setbacks would be expect...

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

I changed the pump power to the actual value to see if the energy consumption estimate improved but it is still woefully inaccurate. As I have an accu...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
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