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Grant 13kW Aerona3 - issues getting zones to temp

 
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Air Source Heat Pumps (ASHPs)
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Toodles
 Toodles
(@toodles)
Illustrious Member Contributor
Joined: 3 years ago
Posts: 2247
10/11/2025 10:57 am  

@jamespa A High Loss Head?!😉


Toodles, heats his home with cold draughts and cooks food with magnets.


   
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 Crimson
(@crimson)
Honorable Member Member
Joined: 2 years ago
Posts: 280
Topic starter 10/11/2025 11:11 am  

I'm honestly crossing my fingers, my toes, everything.

That the specialist comes, caps the top 2 ports, runs the flow pipe to the pipe to the heating direct around the top of the 50L buffer, removes the secondary pump.  Changes some settings.

Installs a new Grant panel, that's smart, not some 80s-90s style keycombo driven installer settings nonsense with code lookup to change settings.

Installs a digital flow setter.

Turns it all on.

And I see 21C in the white living room.  And going forward there's some easy way to see what is an issue, or I can simply make changes to the WC, check the COP, and get the system running as cheap and efficiently as possible.

And I never talk, nor think about heating ever again!



   
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 JamesPa
(@jamespa)
Illustrious Member Moderator
Joined: 3 years ago
Posts: 3351
10/11/2025 12:32 pm  

Posted by: @crimson
↑

I'm honestly crossing my fingers, my toes, everything.

That the specialist comes, caps the top 2 ports, runs the flow pipe to the pipe to the heating direct around the top of the 50L buffer, removes the secondary pump.  Changes some settings.

Installs a new Grant panel, that's smart, not some 80s-90s style keycombo driven installer settings nonsense with code lookup to change settings.

Installs a digital flow setter.

Turns it all on.

And I see 21C in the white living room.  And going forward there's some easy way to see what is an issue, or I can simply make changes to the WC, check the COP, and get the system running as cheap and efficiently as possible.

And I never talk, nor think about heating ever again!

I think you stand a good chance of this happening, other than  the never talking about heating again bit, once the interest takes hold its very difficult to shake off.

... and if it doesn't happen at least it should be obvious why

 


4kW peak of solar PV since 2011; EV and a 1930s house which has been partially renovated to improve its efficiency. 7kW Vaillant heat pump.


   
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 Crimson
(@crimson)
Honorable Member Member
Joined: 2 years ago
Posts: 280
Topic starter 10/11/2025 12:35 pm  

Posted by: @jamespa
↑

Posted by: @crimson
↑

I'm honestly crossing my fingers, my toes, everything.

That the specialist comes, caps the top 2 ports, runs the flow pipe to the pipe to the heating direct around the top of the 50L buffer, removes the secondary pump.  Changes some settings.

Installs a new Grant panel, that's smart, not some 80s-90s style keycombo driven installer settings nonsense with code lookup to change settings.

Installs a digital flow setter.

Turns it all on.

And I see 21C in the white living room.  And going forward there's some easy way to see what is an issue, or I can simply make changes to the WC, check the COP, and get the system running as cheap and efficiently as possible.

And I never talk, nor think about heating ever again!

I think you stand a good chance of this happening, other than  the never talking about heating again bit, once the interest takes hold its very difficult to shake off.

... and if it doesn't happen at least it should be obvious why

 

 

Thanks James, hope it comes to fruition.

I'll no doubt be back on here in 2026 winter time, asking about WC manipulation and balancing again, chasing lower electricity bills lol.

All I can say to everyone here is thanks for all the advice, hopefully getting to end of the journey.

Will report back how things go.

 



   
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