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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Aug 19, 2025
Profile Activity
Topics: 17 / Replies: 2696
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Reply
RE: Fujitsu Waterstage WOYG160LJL Air Source Heat Pump

I think that's very likely. Thus if you set all external controls to be permanently on you should be able to optimise the wc curve to the lowest poss...

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

Please post back on how you get on. You need to give some thought to those ufh loops, they can't be allowed to suck energy out during dhw cycle. Re...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat loss calculators and spread sheets

They will run without a fan but output is then less than a radiator of same size. I thought you were struggling to fit a passive radiator in hence w...

6 months ago
Forum
Safety, Regulations, Tools, Plumbing & DIY Installations
Reply
RE: Heat loss calculators and spread sheets

Could a fan coil be suitable. I had a similar problem which was solved with a fan coil.

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

Ok that's clearer. It's a pity about the manifold pumps, they effectively stop the ashp having the control it needs to make sure everything works pr...

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

Thanks, thats helpful. There seems to be a circular path around the upper volumiser, is this correct (it could be, perhaps the upper heat pump is the...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New to world of ASHPs: Ideal Logic Air Monobloc heat pump 8kW questions

Only to the extent that the heat has been produced at a lower COP than your space heating. But as you are probably talking 1-2kWh max per day, who ca...

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

I hope and think so. this stuff is quite complex to describe!

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
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...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
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...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
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...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
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...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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