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Air Source Heat Pumps (ASHPs)
Last Post by batalto 4 years ago
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 Brendon Uys
(@heacol)
Noble Member Contributor
Joined: 4 years ago
Posts: 408
07/11/2021 6:34 pm  

@morgan It may be eaier if you resd the manual section on adjusting the compensation curve. From memory, I cannot remember how to do it. I deal with too mamy manufaturers units to remember all.

Director at Heacol | Expert Heat Pump Consultant | Book a one-to-one consultation for pre- and post-installation advice, troubleshooting and system optimisation.


   
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Morgan
 Morgan
(@morgan)
Noble Member Member
Joined: 4 years ago
Posts: 623
07/11/2021 6:37 pm  

@heacol 

Thanks Brendon.  Really appreciate the support here.  I’ll get there……. eventually.

Retrofitted 11.2kw Mitsubishi Ecodan to new radiators commissioned November 2021.
14 x 500w Monocrystalline solar panels.

2 ESS Smile G3 10.1 batteries.
ESS Smile G3 5kw inverter.


   
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 Kev M
(@kev-m)
Famed Member Member
Joined: 4 years ago
Posts: 1276
07/11/2021 7:03 pm  

@morgan,

I just used this to set mine. It tells you how to set the baseline and move up and down.  


   
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Morgan
 Morgan
(@morgan)
Noble Member Member
Joined: 4 years ago
Posts: 623
07/11/2021 7:05 pm  

@kev-m 

Kev this is the video I’ve been looking at.  Thank you.

Retrofitted 11.2kw Mitsubishi Ecodan to new radiators commissioned November 2021.
14 x 500w Monocrystalline solar panels.

2 ESS Smile G3 10.1 batteries.
ESS Smile G3 5kw inverter.


   
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 Brendon Uys
(@heacol)
Noble Member Contributor
Joined: 4 years ago
Posts: 408
07/11/2021 7:21 pm  

@morgan It is a pleasure, every person I help, regains faith in heat pumps, they tell others and I will benifit at some stage. As they say, what goes arround comes arround. I do a lot of this for little or no direct benifit.

Director at Heacol | Expert Heat Pump Consultant | Book a one-to-one consultation for pre- and post-installation advice, troubleshooting and system optimisation.


   
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Morgan
 Morgan
(@morgan)
Noble Member Member
Joined: 4 years ago
Posts: 623
07/11/2021 7:23 pm  

@heacol  You’re a star fella.  Thank you.

Retrofitted 11.2kw Mitsubishi Ecodan to new radiators commissioned November 2021.
14 x 500w Monocrystalline solar panels.

2 ESS Smile G3 10.1 batteries.
ESS Smile G3 5kw inverter.


   
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 Kev M
(@kev-m)
Famed Member Member
Joined: 4 years ago
Posts: 1276
07/11/2021 7:23 pm  

Right, it's done.  I went a bit lower than I was going to.      

45C water flow temp. @ -3C outside air temperature.

20C water flow temp. @ 18C outside air temperature.

Both thermostats on manual and set to 30C.  

The ASHP has fired up so let's see what happens.  I have about 6 weeks data with it running as-was so will have plenty to compare. 

 

This post was modified 4 years ago by Kev M

   
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 Brendon Uys
(@heacol)
Noble Member Contributor
Joined: 4 years ago
Posts: 408
07/11/2021 7:49 pm  

@kev-m Great, it may take a few days to get your internal temperature right, it will react very slowly.

Director at Heacol | Expert Heat Pump Consultant | Book a one-to-one consultation for pre- and post-installation advice, troubleshooting and system optimisation.


   
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 batalto
(@batalto)
Famed Member Member
Joined: 4 years ago
Posts: 1091
07/11/2021 7:57 pm  

@kev-m maybe you want to set your thermostats to 22°. That way you won't suddenly wake up sweating and you'll be able to see what conditions your heating is working in. I was thinking of doing what you're doing, but our heating barely comes on at the moment in the day as the room is 21 or above. No don't really want to set it up 30 and swealter

12kW Midea ASHP - 8.4kw solar - 29kWh batteries
262m2 house in Hampshire
Current weather compensation: 47@-2 and 31@17
My current performance can be found - HERE
Heat pump calculator spreadsheet - HERE


   
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 Derek M
(@derek-m)
Illustrious Member Member
Joined: 4 years ago
Posts: 4427
07/11/2021 8:03 pm  
Posted by: @batalto

@kev-m maybe you want to set your thermostats to 22°. That way you won't suddenly wake up sweating and you'll be able to see what conditions your heating is working in. I was thinking of doing what you're doing, but our heating barely comes on at the moment in the day as the room is 21 or above. No don't really want to set it up 30 and swealter

A wise move Batalto.


   
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 Derek M
(@derek-m)
Illustrious Member Member
Joined: 4 years ago
Posts: 4427
07/11/2021 8:42 pm  

@kev-m 

When you had your MMSP installed, did they not test and prove that it was functioning correctly before they dashed off into the sunset?


   
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 Derek M
(@derek-m)
Illustrious Member Member
Joined: 4 years ago
Posts: 4427
07/11/2021 9:11 pm  

Now that many of you have switched to weather compensation. Well done.

It will be interesting to see how the weather compensation systems supplied by the different manufacturers perform, and how they cope with variations in heat demand caused by solar gain, wind chill and the effects of rain.


   
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