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Optimising LG Therma V R32 using AI

 
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Air Source Heat Pumps (ASHPs)
Last Post by Tim441 6 months ago
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 Tim441
(@tim441)
Honorable Member Contributor
2233 kWhs
Joined: 2 years ago
Posts: 265
07/01/2024 4:20 pm  

My Grid import for last week:

1 Jan 41.5kwh

2 Jan 25.21kwh

3 Jan 30.1kwh

4 Jan 37.1kwh

5 Jan 39.55kwh

6 Jan 44.2kwh

we wfh so in all day. 

Grid import:

2022: 10158 not using weather comp/AI

2023: 8225 using wc/AI

Also note:
we used a hot tub quite a lot in 2022 but used less in 2023. Impacted grid import and solar export.
we have an elec car since June 2023 so actual comparative for 2023 will be under 8000 

Its complex making exact comparisons even though i try and keep a spreadsheet. so many variables! e.g. We sometimes import from grid to fill batteries and sell back to Octopus for profit in Saving Sessions and also in 2022 when prices were all over the place.
hot tub usage
e/v 

Overall I'm absolutely certain our usage is reduced by WC/AI

Listed Grade 2 building with large modern extension.
LG Therma V 16kw ASHP
Underfloor heating + Rads
8kw pv solar
3 x 8.2kw GivEnergy batteries
1 x GivEnergy Gen1 hybrid 5.0kw inverter
Manual changeover EPS
MG4 EV


   
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 Tim441
(@tim441)
Honorable Member Contributor
2233 kWhs
Joined: 2 years ago
Posts: 265
07/01/2024 4:28 pm  

with regard to tariffs etc.... I do not have any Home Automation and have not looked into it a lot. Can the LG be integrated easily?

My tariffs are:

Import: Octopus Tracker (daily tracker not Agile)

Export: Octopus Fixed (15p)

I use Tracker for a number of reasons:
1. My inverter is only 2.6kw so I can't fill batteries very fast during cheap periods and can't draw from batteries very fast. So i need to use grid at all times.
2. With maximising WC/AI I prefer to keep constant running and not be having to control for tariff reasons

Listed Grade 2 building with large modern extension.
LG Therma V 16kw ASHP
Underfloor heating + Rads
8kw pv solar
3 x 8.2kw GivEnergy batteries
1 x GivEnergy Gen1 hybrid 5.0kw inverter
Manual changeover EPS
MG4 EV


   
ReplyQuote
 Tim441
(@tim441)
Honorable Member Contributor
2233 kWhs
Joined: 2 years ago
Posts: 265
07/01/2024 4:39 pm  

On solar...

I have 2 systems:

Original 7 panels 2kw. Pitched roof - south facing
on FIT but now transferred to actual export payment instead of assumed. Produces circa 1500kw pa

New system: 20 panels 6kw. 6deg/flat roof - east facing. Good sun until mid afternoon
Produces circa 5000kw pa

New system includes 3 x 8.2kw GivEnergy batteries
1 x GivEnergy Gen1 hybrid 5.0kw inverter 

newer kit has advantage of ability to import/export at higher rates than mine

recommend looking at utilising emergency power supply - preferably with a gateway such as Tesla, Solaredge or Givenergy All in one so that it auto changes over.

Many installers don't bother to point you at EPS options!

Listed Grade 2 building with large modern extension.
LG Therma V 16kw ASHP
Underfloor heating + Rads
8kw pv solar
3 x 8.2kw GivEnergy batteries
1 x GivEnergy Gen1 hybrid 5.0kw inverter
Manual changeover EPS
MG4 EV


   
ReplyQuote



 IanS
(@ians)
New Member Member
21 kWhs
Joined: 1 year ago
Posts: 1
10/01/2024 11:41 am  

@derek-m If you navigate to the UK LG Therma V heat pump owners group on facebook you will find a complete setup doc for AI I pulled together after my own struggles to get this right. Look in files section V2.


   
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 Derek M
(@derek-m)
Illustrious Member Member
15283 kWhs
Veteran Expert
Joined: 4 years ago
Posts: 4429
10/01/2024 5:03 pm  

Posted by: @ians
↑

@derek-m If you navigate to the UK LG Therma V heat pump owners group on facebook you will find a complete setup doc for AI I pulled together after my own struggles to get this right. Look in files section V2.

Hi Ian,

Thanks for the link but I am not a facebook user, have never been and doubt that I ever will be. Just a friendly old dinosaur. 😋 

 


   
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1
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 AndyJ
(@andyj)
Active Member Member
52 kWhs
Joined: 1 year ago
Posts: 5
Topic starter 10/01/2024 6:08 pm  

@ians Thank you - sounds like that will be a greatr help. Now just waiting for my request to join the group to be accepted.

 


   
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 Tim441
(@tim441)
Honorable Member Contributor
2233 kWhs
Joined: 2 years ago
Posts: 265
29/08/2024 8:37 am  

Excellent document in the Facebook user group. Step by step guide on AI setup

LG Therma V Weather compensation v4.docx

https://www.facebook.com/share/g/HTnrvUAd5v6MwUV7/

This post was modified 6 months ago by Tim441

Listed Grade 2 building with large modern extension.
LG Therma V 16kw ASHP
Underfloor heating + Rads
8kw pv solar
3 x 8.2kw GivEnergy batteries
1 x GivEnergy Gen1 hybrid 5.0kw inverter
Manual changeover EPS
MG4 EV


   
ReplyQuote
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