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JamesPa
@jamespa
Moderator
Illustrious Member
Joined: Apr 3, 2023
Last seen: Aug 21, 2025
Topics: 17 / Replies: 2698
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RE: Rate the quality of your heat pump design and installation

@stopbar thanks for your contribution and I am pleased you are now sorted. When I read it I immediately thought - this is so typical. Installers le...

6 months ago
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RE: Grant Aerona3 13kW Noisy pipes after balancing

If water is flowing through the radiators quickly then DT will be small for any given heat transferred to the room, and vice versa. The heat transf...

6 months ago
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RE: Fujitsu Waterstage WOYG160LJL Air Source Heat Pump

I think thats expected with the way this particular model works, see page 49 of the manual. Adjusting the room temperature 'set point' shifts the WC ...

6 months ago
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RE: Totally bewildered with my ECO4 heat pump installation

@jaynieq Thanks for the feedback, its always good to hear what happens as it helps us do better next time. You may find you need to fine-tune the we...

6 months ago
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RE: Fujitsu Waterstage WOYG160LJL Air Source Heat Pump

I would agree with your conclusion on the last point. When you say 'target temp', thats set on the fujitsu controller in the plant room? Hopeful...

6 months ago
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RE: Tomato Energy

... Our posts crossed. The 'physics' problem for any invention (although per the above Im not sure its needed) is the desire for 20l/min showers...

6 months ago
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RE: Tomato Energy

Not really that much wasted. In winter, assuming your DHW tank is within the heated envelope of the house, it offsets the space heating, so no actu...

6 months ago
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RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide

The second one avoids the possibility that all the hot water collects at the top and is bypassed by the returning flow. Not a lot really, but perhap...

6 months ago
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RE: Tomato Energy

I think the physics is your enemy here. Water has an enormous heat capacity compared to more or less anything else. So it needs a lot of energy to he...

6 months ago
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RE: Solar inverters - where does the energy go when clipping?

It's a good question and one which I have asked myself. We really need a solar panel physicist to answer, I am a lapsed physicist but never really st...

6 months ago
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RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide

The volumiser provides extra system volume which may reduce cycling or may be necessary for defrost if your system doesn't otherwise have sufficient w...

6 months ago
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