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Last seen: Sep 13, 2026
Erm... what's the return water temperature for your boiler in its present situation? If it's above 45degC, then your HP won't be able to add anythin...
These look to me like they are 5kWh rack-mount boxes.So they'll probably have 100Ah cells inside. I wonder why they've decided to start from a relat...
Hi @jvs197 and welcome! My first observation is that your 8.5kW ASHP is already oversized for your sumptuously-insulated house.So your system design...
Your meter falls within the responsibility of your Energy Supplier, whereas the 100A Service Fuse belongs to your DNO.So you'll need to seek advice on...
Not a photo which screams out "well insulated pipework" @gc61 🤔 Equally, whilst Viessmann could use your third photo for advertising purposes, on...
Yes. That's where we're in agreement. Simply having the units talking to each other isn't reassuring me that they'll arrive a sensible answers - esp...
I don't think you need be concerned about that point. The reason we top balance is to create an even charge in each cell. It means that the balancin...
That's the response I expected from a Viessmann customer.They've established a niche market at the high quality end of the spectrum. I doubt that Vi...
Well @chickenbig - it seems that you're experiencing similar issues with BMS units in parallel, to those I've found with Growatt inverters in parallel...
@gc61 - Does the installation of a high quality (expensive) Viessmann HP mean that you get an equally high quality installation from a Viessmann-train...
Aagh! The first time I read this, I assumed you were talking about export to the grid! The term "export limit(ation)" needs to be reserved by us h...
That's a shame. I don't which DNO you have, but it should be the case that their RIIO-ED2 'agreement' with Ofgem requires them to become DSO in natu...
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Degrees of Separation
Latest Posts
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RE: Recommendations in Ely (Cambs) area for Full setup checks on Nibe HP setup for House.
@jamespa yes it was costing them a lot to run in the la...
By StuChi , 39 minutes ago
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RE: Siting of the external sensor on a heatpump
@bobflux My Daikin ASHP is SSW facing and the wall behi...
By Toodles , 1 hour ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
You should (almost) always reject having a buffer, by w...
By JamesPa , 23 hours ago
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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
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RE: Is it the house or the equipment?
@majordennisbloodnok I do sympathise. On the original...
By springswood , 1 day ago
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No, but the heat pump must be capable of delivering a S...
By JamesPa , 1 day ago
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Sorry to hear about the problems, its going to be somet...
By JamesPa , 1 day ago
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RE: Daikin ESPAltherma and Home Assistant installation
It's laziness lol The PV system is very chatty, meter...
By bobflux , 2 days ago
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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
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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
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RE: Adventures in heat loss calculations
I have seen it stated that the declared calorific value...
By JamesPa , 2 days ago
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RE: Two heating zones to one zone
@transparent Many thanks. The garage is fairly well ...
By Profzarkov , 3 days ago
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RE: Vaillant Aurotherm - Heater Wire Position
Ah, good point. I need to check if this was installed i...
By Batpred , 3 days ago
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@batpred thanks for getting a copy. Appreciate the supp...
By Mars , 4 days ago
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