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Joined: Jan 20, 2022
Last seen: Sep 22, 2025
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Topics: 16 / Replies: 2473
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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)
Reply
RE: High electricity use – 17kW Grant Aerona 3

Can I suggest that you send an email to SP Energy Networks? customercare@spenergynetworks.com "Attention Distribution Area Manager for Ruthin:...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Green Homes Scheme - PV Upgrade

Whatever is the legal situation with FIT payments, the problem is that it remains unenforced. There are lots of people who have added panels to the ...

7 months ago
Forum
Solar Photovoltaic (PV)
Reply
RE: High electricity use – 17kW Grant Aerona 3

@jgtukpd - There are a number of different issues in what I've seen from your photos. I'm going to assume that what I write here will be shared with...

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

Annotations added to your photos: (external view on left) external pipe run should be completely sealed against rain. Should be in pipe ...

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

Pipe insulation is inexpensive.It's a very important part of your heat pump installation, and needs doing well. Here's Class-O Nitrile-rubber pipe i...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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