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: Aug 10, 2026
Doubtless its possible but Im not currently sure its necessary or even desirable. You have plenty of kit much of which is unnecessary and unhelpful, ...
That doesn't make much sense as it should alter the flow temp, that's what WC is. 0 and 15 are presumably the outside temps, what are the correspond...
It does but it almost all applies to boiler systems and I wish I had understood when I had a boiler as much as I understand now. Just before I replac...
Seriously? So 'our heat pumps just work, we don't know how, but trust us they do'. That sounds like a red flag of the highest order! No sorry tha...
Some data is definitely useful. I ordered the internet connection for my Vaillant heat pump and use Home assistant to pick up some basic data because...
So theres a problem for starters. This means that the FT flatlines at -2 which means that, when its <-2 it isnt high enough to deliver the energy ...
That seems high. Do you know what your WC settings are (even if you cant change them and even roughly?)
Very much agree with this! Sometimes the way to get things to operate in pure WC mode is to set the curve on the controller, then just turn all the ...
Thats sensible then Most heat pumps seem to limit adjustment of the WC settings to installer mode, although some do expose something to ...
Fair enough and Im not trying to circumvent regulation, I was just checking that I understood the underlying cause for your comment and that I hadn't ...
Assuming your house was heated previously your oil consumption indicates a loss of more like 4-7kW, so an 8kW unit would probably have been perfect as...
So thats a regulatory matter not technical? The Sunnyboy has no CT. If the CT for the battery inverter is on the incoming main then it does know th...
SPONSORS
Degrees of Separation
Latest Posts
-
I agree with your analysis from the physics standpoint....
By JamesPa , 31 minutes ago
-
How can they stop anybody from signing up to a heat pum...
By L8Again , 59 minutes ago
-
RE: Indevolt Batteries UK Support & Info Thread
@indevolt-tech When you say 'dedicated switched fused ...
By JamesPa , 2 hours ago
-
RE: Electricity price predictions
I'm very much grounded in systems too, so I think we're...
By Majordennisbloodnok , 4 hours ago
-
RE: Do I need to change the control unit when replacing my Ecodan Air Source Heat Pump
Unfortunately the answer is Yes you will need a new FTC...
By F1p , 23 hours ago
-
RE: PV and battery long payback - sense check query
So if it helps I was recently quoted about 8 grand for ...
By EtchedPixels , 24 hours ago
-
RE: HomeTherma Is Live: A New Home-Energy Platform Built Around the Homeowner
Signed up!
By bobflux , 1 day ago
-
RE: Has anyone seen this problem before? Huge anticycling times
Oh dear. Glad it was replaced. I have been mighty imp...
By JamesPa , 2 days ago
-
RE: Can I start an argument about buffer tanks please? 🙂
Dont, just adjust the LSVs to get different temperature...
By JamesPa , 3 days ago
-
RE: Heat pump running costs – what has actually worked for you?
I installed the air source heat pump in January 2026, i...
By bobflux , 3 days ago
-
RE: Grant Aerona Air to Water R290 6.5 kW - Quiet Mark and Silent Running
Thats all interesting. DHW on my Vailant seems to respe...
By JamesPa , 3 days ago
SPONSORS
