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Adjusting 6kW Daikin's Weather Compensation Curve

 
Air Source Heat Pumps (ASHPs)
Last Post by Ubert767 1 month ago
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 Ubert767
(@ubert767)
Eminent Member Member
Joined: 6 months ago
Posts: 10
Topic starter 13/03/2025 3:20 pm  

How best to fine tuning the weather compensation curve to reduce the buildings indoor temperature?

WD Curve 27Oct

I'm familiar with accessing the adjustments of the weather curve on my Daikin 6kW hydrobox and have gradually trimmed the settings on the x-axis down from 40°C to 35°C but would like to reduce the indoor temperature slightly further.

Does the y-axis setting ever need attention?

Is it wise to make adjustments during the shoulder months?

Thanks


   
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 JamesPa
(@jamespa)
Illustrious Member Moderator
Joined: 2 years ago
Posts: 2350
13/03/2025 5:41 pm  

Posted by: @ubert767
↑

Does the y-axis setting ever need attention?

If you get outdoor temperatures outside the range where the curve has a slope then yes.  So if your oat goes below -2 with any frequency I would adjust the x and y at this point to extend the line.

 

Posted by: @ubert767
↑

Is it wise to make adjustments during the shoulder months

It's easier to do it in the coldest months but sometimes you don't have a choice.  You can always revert next season

Hope that helps

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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 Ubert767
(@ubert767)
Eminent Member Member
Joined: 6 months ago
Posts: 10
Topic starter 13/03/2025 5:46 pm  

@jamespa 

I'm grateful for your advice.

 


   
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