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How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide

 
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Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Last Post by JamesPa 3 months ago
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 Alfapat
(@alfapat)
Reputable Member Member
Joined: 3 years ago
Posts: 182
07/05/2025 4:08 pm  

At long last , I found a decent plumber and boiler expert locally to take the buffer out of the system(his advice) and change the piping the short distance that I had from the buffer from 22 to 28mm . Also down to one pump on the flow side directly into the CH and returning to HP . DHW remains as it was . A week into the modified system running and seems to be fine , there has been some frosty nights and cold airstream throughout the last two weeks, and that’s reflected with the heating on in the evening . I have brought the water law back to 38c from 40 , OK so far . Is Homely beneficial at  this time of year? 

c


   
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 JamesPa
(@jamespa)
Illustrious Member Moderator
Joined: 2 years ago
Posts: 2660
07/05/2025 4:43 pm  

Really delighted to hear that.  I can't comment on homely but if you don't have it then you will likely want to readjust your weather compensation curve having removed the buffer.  At this time of year it's probably nigh on impossible to get it right, most likely you will need to wait until the new heating season to get to final values.  If you need any help please just ask!

This post was modified 3 months ago by JamesPa

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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 Alfapat
(@alfapat)
Reputable Member Member
Joined: 3 years ago
Posts: 182
07/05/2025 7:07 pm  

@jamespa So settings to date are as follows for now.

- **2011:** -10°C
- **2012:** 15°C
- **2021:** 40°C
- **2022:** 25°C

I have put 2022 to 38c

Will see how it goes thanks £2900 later !


   
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 JamesPa
(@jamespa)
Illustrious Member Moderator
Joined: 2 years ago
Posts: 2660
08/05/2025 2:41 pm  

Good luck, I hope it all works out!

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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