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JamesPa
JamesPa
@jamespa
Moderator
Illustrious Member
Joined: Apr 3, 2023
Last seen: Aug 18, 2026
Topics: 27 / Replies: 5245
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RE: Fujitsu Waterstage WOYG160LJL Air Source Heat Pump

This is indeed ambiguous!. One would expect, since this is in a section called 'room influence' that it means ambient in, but it is unclear. the ba...

2 years ago
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RE: Twin 10kw Grant Aerona Volumiser Tanks using lots of power

Honestly, my first call would be to disable them. As I say above the main point of the volumisers is simply to add water volume (ie its a tank). The...

2 years ago
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RE: New to world of ASHPs: Ideal Logic Air Monobloc heat pump 8kW questions

In fairness sometimes it's the only viable location. So long as gge pipes and tank are well insulated it may be the best that an be done. My cylin...

2 years ago
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RE: Twin 10kw Grant Aerona Volumiser Tanks using lots of power

Sorry I misunderstood 55 to be the dhw temp not the flow temp for dhw. That being the case I wouldn't change it. It sounds like everything is basic...

2 years ago
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RE: Twin 10kw Grant Aerona Volumiser Tanks using lots of power

Is there a setting allowing you to increase the differential between flow temperature and target dhw temperature. Then it would heat up quickly to a...

2 years ago
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RE: Twin 10kw Grant Aerona Volumiser Tanks using lots of power

Thanks. I know a fair bit about heat pumps but not grant specifically, and I certainly dont know about their master slave setup. However i suspect t...

2 years ago
Reply
RE: Fujitsu Waterstage WOYG160LJL Air Source Heat Pump

You clearly have 'got' it. You dont really need me! The only thing Im not sure about is this "then reduce the temp set point on the ASHP down fro...

2 years ago
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RE: Twin 10kw Grant Aerona Volumiser Tanks using lots of power

I apologies for my reaction. I was initially shocked that anyone would do this and then shocked that anyone makes it into a product. I still am TBH...

2 years ago
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RE: Twin 10kw Grant Aerona Volumiser Tanks using lots of power

Am I correct in interpreting the photo as showing the volumisers outside and uninsulated. If so that's dreadful, to the point that this needs to be f...

2 years ago
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RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

Of course I know that. I am making the implicit assumption that the objective is that this equals the loss from the house. If it doesn't then the ...

2 years ago
Reply
RE: Controversial opinions - pure weather compensation, buffer tank, heat loss, oversized heat pumps

I completely understand and agree with most of that. The only point I would clarify is your statement 'So there are other reasons for getting capacit...

2 years ago
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