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Joined: Jan 20, 2022
Last seen: Sep 9, 2025
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Topics: 16 / Replies: 2454
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RE: Twin 10kw Grant Aerona Volumiser Tanks using lots of power

I'm puzzled by that. The Sig Energy datasheet indicates that there are two separate 240v power outputs.The one marked "Backup" suggests that it shou...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Baxi Air Source Heat Pump tips and tricks please

Thanks for the photos. That's in the top 10% of external HP installations which I've seen. 🙂 But it still looks like rain could enter thr...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Tomato Energy

Some of them even get elected and then decide energy policy 😥 That depends on whether the decisions are being made on the basis of M...

7 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
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RE: Tomato Energy

How does their software collect that data? From Smart meters? ... being polled each hour to obtain 'live' data? It's an odd decision to buil...

7 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Heat loss calculators and spread sheets

Yes, most meters (including all Smart Meters) record gas consumption in cubic metres (m³) To convert to kWh... Cubic meters (m³) used x calorific ...

7 months ago
Forum
Safety, Regulations, Tools, Plumbing & DIY Installations
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RE: Twin 10kw Grant Aerona Volumiser Tanks using lots of power

I haven't (yet) done any research on the Sigenstor inverter,but I'm posting a block diagram which is an approximation of your electrics as I've unders...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Twin 10kw Grant Aerona Volumiser Tanks using lots of power

Erm... you mustn't do that! The configuration of the inverter must limit export to the 27A which the DNO Consent states. May I explain why... ...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Twin 10kw Grant Aerona Volumiser Tanks using lots of power

That's going to depend on the nature of your contract with the architect. For a new-build, it's usually the case that it is given an Architect's Cer...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Twin 10kw Grant Aerona Volumiser Tanks using lots of power

Good morning @amiddlemass I realise that @jamespa and I are discussing different subjects with you simultaneously.Let us know if this is getting t...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Twin 10kw Grant Aerona Volumiser Tanks using lots of power

A few comments from me on what I've understood thus far on your installation of Grant ASHPs: A: There is another new topic here on a Grant 17kW...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: High electricity use – 17kW Grant Aerona 3

The upgrade to 3-phase was most likely initiated by your DNO. It's possible that they did stipulate the need for this as a result of communications ...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

For our more technically-savvy members here, and prompted by @robsI've done a bit of background research on Compound Compressor Heat Pumps. There's ...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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