Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!
Last seen: Apr 2, 2026
@toodles thanks Toodles. I do have 4 probes for when I was balancing radiators 2 at a time. Maybe I should leave it and do what u did as I feel my i...
@toodles This is the dial on the pump below . So the left side is Variable differential pressure (Δp-v): . The top has a fixed I, II, III. I b...
@toodles yes I think ur right. Any thoughts on my volumiser diagram?
What stiff baffles me.... How the loft flow setter which is the flow in is 28 and the return is 33. No matter what speed I use on the 2nd pump it st...
Hi @bobflux and @jamespa tagging you as you both have been giving me advice which is invaluable and helpful. I have done the pipe trace and everything...
Thanks Bob. I'm willing to give this a go. So I open all the TRV's, what about the Lock shields? What is the exact process on how to really figure thi...
Thanks James, Yes I saw that post and read it last night and tried to make sense of it 🤣 Is there any other way the buffer could be plumbed in...
So these are fairly equal to each other. a bit of sway with the 21.4 I'm open to any advice which would be the best way to have it plumbed in as a...
I don't know pretty sure it displays m3h but not sure on the rest. I can only imagine it would be powerful enough as it's a 13kw unit and normally has...
Thank you Bob. Do you think Option 1 or 2 is best from the pictures? I'm thinking Option one just for ease of flow direction plus easier for how mine ...
So do you mean like this? Excuse the terrible paint mock up 1 or 2
The arrow is pointing down on the pump itself so at least that seems correct
- 26 Forums
- 2,590 Topics
- 60.3 K Posts
- 241 Online
- 6,922 Members
Join Us!
Worth Watching
Latest Posts
-
RE: Air-to-air heat pumps - best models and installers
@ashp-bobba, do I remember correctly that you install A...
By Mars , 8 hours ago
-
RE: A2A vs A2W: Which Heat Pump Would You Pick?
There isn’t as far as I know, @djh, but you’re welcome ...
By Majordennisbloodnok , 12 hours ago
-
RE: Can anyone explain the following behaviour with a Grant Aerona 3 R30 / Smart Controller?
Final Update. Yesterday, I was going through the moti...
By Unsure , 13 hours ago
-
RE: How much can an east/west solar solar system be oversized?
Best performance occurs with PV string near inverter no...
By bobflux , 13 hours ago
-
RE: Forum updates, announcements & issues
Thank you Mars for all your dedication to improvements;...
By Toodles , 16 hours ago
-
RE: Who do I complain to about a poor ECO4 installation, can anyone advise?
Take it one step at a time. If you can get the dhw and...
By JamesPa , 23 hours ago
-
RE: Selling 2 x Kensa Shoebox 7kw GSHP (New)
Hi Jain, we’ve got an ashp so I’m afraid we won’t be yo...
By Judith , 23 hours ago
-
No buffer or low loss header Grant controller in sens...
By JamesPa , 1 day ago
-
RE: Are We Sleepwalking Into Another Race to the Bottom?
That's an amazing job to get all that in there! A truly...
By Batpred , 1 day ago
-
RE: Anyone concerned about GivEnergy?
Thanks for your advice - I'll keep trying with the inst...
By JohnDwyer , 2 days ago
-
RE: Plug and play solar. Thoughts?
I am also yet to find a case where an installation that...
By Batpred , 2 days ago
-
RE: British Gas vs Octopus Energy vs Heat Geek vs EDF vs Aira vs OVO vs EON.Next vs Boxt
This is what I got from OVO. At least it was quick.. ...
By Batpred , 2 days ago
-
RE: IVT greenline HT Plus E - Circulation Pump Constantly On
Welcome to the forums. Irrespective of which brand yo...
By Mars , 2 days ago
-
RE: 7.5kW Heat Loss, But Quoted a 10kW Midea. No Re-Pipe, No Buffer Tank. Does This Add Up?
Oh, how I love these old scientists!I'm in with your 5 ...
By LeJamaisContent , 2 days ago
-
RE: Jokes and fun posts about heat pumps and renewables
@jamespa Someone who is not easily phased I suppose.
By Toodles , 3 days ago
-
@downfield Once OE had removed our gas meter and capped...
By Toodles , 3 days ago
-
Living with a Low Loss Header (Or Measure For Measure, it’s All About the Pump)
I know, low loss headers (LLHs) aren’t necessarily ‘low...
By Toodles , 3 days ago
-
RE: What is the main ‘dictator’ of Agile’s unit price?
After seeing umpteen negative price slots again today, ...
By ChandyKris , 3 days ago
-
RE: The Reality Behind a Failed Heat Pump Installation – and an IWA Insurance Rejection
@ian-w Getting back to the problem in hand, what do yo...
By JamesPa , 3 days ago
-
RE: Solar Power Output – Let’s Compare Generation Figures
@papahuhu Generally, I leave Homely to take care of mat...
By Toodles , 4 days ago
-
@judith, glad you found the story interesting. On eff...
By Mars , 4 days ago
-
RE: New Vaillant aroTherm Plus in black - When will it come to the UK?
The vaillant controller and app do all of that (and mor...
By JamesPa , 4 days ago


