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: Feb 13, 2024
@derek-m mostly because that is what the documentation that came with the heat pump says, and I quote "... and 30l/min on the 12 and 16kW unit." ...
I am going to say that my maths is probably not correct here [earlier post that said 30x]. Will come back following some more thought. A quick look ...
Here is one spec sheet I found. They are not for my valves, but the below are two different sizes of the V8043. You can see the impact at my target ...
@scrchngwsl That is a good question, one I am trying to work out for myself. Ideally you need to know your target flow rate to start. This simple nu...
@heacol What I am learning is how to understand the numbers. There is a big difference between getting 8.6 m3per hour with a 1 bar pressure drop (whi...
@heacol Thanks for the link. I already have a Grundfos Magna 3 [25-100]. I think I have a dodgy manual flow meter as well (seems to go down to 22mm ...
@heacol I am trying to fix my flow rate. I can get 30 litres per second but with the [single] pump running @95% of capacity and using 106w and making...
@iancalderbank - you might be able to get a really quick and cheap solution up and running with a couple of $5 esp32's, some 1 wire sensors and toit. ...
@cathoderay Excellent thread and great start, thank you. Given the many different circumstances I would suggest anyone heading down this journey t...
@iancalderbank Hi Ian I would not follow my route unless you also want to also add a PWM to 0-10v converter since I was not aware of the PWM option du...
@derek-m I think I got this info from one of your other posts and will rectify this shortly, though will be a bit convoluted as I need a PWM to 0-10v ...
@cathoderay You are 100% correct, and I apologise for the concise nature of my post, did not want to get into too much detail in this thread and was t...
Latest Posts
-
RE: Vaillant arotherm plus heat pump frost protection
@jamespa Just watching a video on You Tube of a heating...
By seoras , 2 minutes ago
-
RE: Renewables & Heat Pumps in the News
The real question is, was there ever a committed intent...
By JamesPa , 50 minutes ago
-
RE: Brown Oily Residue Blocking Air Vent and Weeping Relief Valve... Anyone Seen This?
Difficult to comment further without being there. If...
By JamesPa , 4 hours ago
-
@andrewj A ‘DIY’ job suggests you may clean up quite we...
By Toodles , 6 hours ago
-
RE: Our 10 year old Grant heat pump failed
Back in the 70’s and through the eighties, one of my re...
By Toodles , 6 hours ago
-
RE: Indevolt Batteries UK Support & Info Thread
@indevolt-uk Keen to know more about the pricing and wh...
By ChandyKris , 9 hours ago
-
RE: Share Your Experiences with Heat Pump Manufacturer Support
@seoras Sorry to hear that. I found Vaillant very help...
By JamesPa , 23 hours ago
-
The Watchdog That Watched and Waited
On 9 January 2026, Consumer Energy Solutions collapsed ...
By Mars , 1 day ago
-
RE: GSHP Kaput After 16 Years: New Compressor or Switch to ASHP? Advice Welcome
Cool Energy in Grimsby sell ground source heat pumps an...
By DerekDeLeon , 1 day ago
-
RE: Valliant Heat Pump Settings
Thats arguably a sign of a good installer - they unders...
By JamesPa , 1 day ago
-
RE: Electricity price predictions
Well, we have so many cases where rain water mixes with...
By Batpred , 1 day ago
-
RE: Two heating zones to one zone
@profzarkov They arent obviously wrong, but the only...
By JamesPa , 1 day ago
-
RE: Towns water feed to air source heat pump system
The DHW circuit cant be separated (well it could, you c...
By JamesPa , 1 day ago
-
Solis AC-coupled 3kW storage inverter
Solis AC-coupled 3kW storage inverterPylontech batterie...
By MartinRobinson , 2 days ago
-
RE: My NIBE ASHP Nightmare: No Commissioning, High Bills and a Hostile Installer
As @transparent has observed above, this is not bad, an...
By cathodeRay , 2 days ago
-
As I was reading this article Mars, I was thinking that...
By Toodles , 2 days ago
-
RE: Tell us about your Solar (PV) setup
Installed in May 2011: 16*Sharp 245 W monocrystalline p...
By txmartyn , 2 days ago
-
-
RE: Say hello and introduce yourself
That doesn't sound 'right' to me. The national Smart ...
By Transparent , 3 days ago
-
RE: Growatt battery disconnected
I doubt this will happen, but I will try and suggest it...
By Eliuccio , 3 days ago
-
Understood. That's why I decided from the outset on a ...
By JamesPa , 4 days ago
-
RE: My experience with 3 heat pump surveys: Heat Geek, British Gas & Octopus
On the litigation, I would not go there and definitely ...
By Batpred , 4 days ago
-
RE: Recommended home battery inverters + regulatory matters - help requested
I suppose if your pv inverter packs up, you have a plan...
By Batpred , 4 days ago
