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: Sep 9, 2026
@johnr I think I may have missread something somewhere as I now understand that the secondary pump flow rate should be equal to or greater than the pr...
@johnr Hi. I think I may have missled you in that my buffer is configured in exactly the same way as you describe. Whats a little bit concerning for...
@toodles Thanks. I haven't forgotten you. Due to the low outside temperatures, my ecodan is going into anti-freeze at night when the set back means ...
@johnr Thank you for explaining how your buffer is connected and the details of the temperature at each of the four ports. Both &toodles and I h...
@toodles Of course the difference between the Daikin and Mitsubishi is that the Daikin has a built in primary circulating pump, controlled by the Daik...
@grumpidoc Please remember I am just a new heat pump user and not a heating engineer but I have picked up a few things on my journey! None of the belo...
@grumpidoc You may be interested in what I have done to reduce my system noise. My system is Ecodan 11.2kw > Primary Pump (Grundfos UPS2 25-80) &...
@boycey Yes, the thermostat on my Ecodan is on the back in the top corner. When the engineer replaced the thermostat, I suggested that it could perh...
@boycey Legionairres taking too long: Mitsubishi diagnosed a defective immersion heater. Installer is coming next week to replace it. Outside temp...
@trbob I went down the Mitsi Engineer route unfortunately with the fee. Report has just come in to say that the immersion had "irregular figures whe...
@trbob Very interesting. It took round about an hour for your immersion to get from 49.5 to 59.5. Probably acceptable It looks like the Mitsi soft...
@toodles I guess you are trying to create a bit of shade. Not sure if the wife will agree to blocking the kitchen window and to be honest, unless it...
SPONSORS
Degrees of Separation
Latest Posts
-
RE: Next steps on my ASHP journey: Radiators and Pipework
If you are considering phasing the project, then I woul...
By GrahamF , 2 hours ago
-
RE: Siting of the external sensor on a heatpump
Of course had the heat source been a heat pump it would...
By JamesPa , 4 hours ago
-
Never assume, it makes an ass of u and me! OK, tha...
By JamesPa , 4 hours ago
-
RE: Recommendations in Ely (Cambs) area for Full setup checks on Nibe HP setup for House.
In fairness all heating has cost a lot to run in recent...
By JamesPa , 6 hours ago
-
RE: Is it the house or the equipment?
@springswood We have two Daikin single split A2A syst...
By Rob of York , 7 hours ago
-
RE: Navigating the World of Refrigerants In Heat Pumps: A Guide for Homeowners
Indeed we are invvestigating AC at present and are havi...
By Toodles , 1 day ago
-
No, but the heat pump must be capable of delivering a S...
By JamesPa , 2 days ago
-
RE: Daikin ESPAltherma and Home Assistant installation
It's laziness lol The PV system is very chatty, meter...
By bobflux , 2 days ago
-
RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
R (The R Project for Statistical Computing, I use it wi...
By cathodeRay , 2 days ago
-
RE: Vaillant Arotherm Plus 7KW need a service on it
booked it with Vaillant. will use them until i can find...
By AdamK , 2 days ago
-
RE: Adventures in heat loss calculations
I have seen it stated that the declared calorific value...
By JamesPa , 3 days ago
-
RE: Two heating zones to one zone
@transparent Many thanks. The garage is fairly well ...
By Profzarkov , 3 days ago
-
RE: Vaillant Aurotherm - Heater Wire Position
Ah, good point. I need to check if this was installed i...
By Batpred , 4 days ago
-
@batpred thanks for getting a copy. Appreciate the supp...
By Mars , 4 days ago
SPONSORS
