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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Aug 16, 2025
Profile Activity
Topics: 17 / Replies: 2694
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?

There is absolutely nothing wrong with buffer tanks in principle. The problem lies with the execution which all too frequently, it seems, involves poo...

5 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Replacing knackered oil boiler with ASHP - Perthshire

On the basis that 1l oil = 10kWh and 1cu m wood = 2500kWh, the total is between 25+10=35 and 40+10=50 MWh per annum. That's definitely in the same ge...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Newbie: utterly confused with my Mitsubishi Zubadan air source heat pump running on 55C set flow temperature

That's really scary, of all the settings it's the probably most important one, and one which the installers cannot possibly get right because they don...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Replacing knackered oil boiler with ASHP - Perthshire

Totally agree and I would be suspicious of the high loss estimates. Even if you did use the wood burners and know how much wood you burned you could ...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Adjusting 6kW Daikin's Weather Compensation Curve

If you get outdoor temperatures outside the range where the curve has a slope then yes. So if your oat goes below -2 with any frequency I would adjus...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Anyone able to provide some feedback before I make my finale decision? Samsung vs Baxi vs Vaillant

I think you are covering two points, namely water pump modulation and control strategy (weather compensation and/or room thermostats. I will deal wit...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Volumisers in Heat Pump Systems: Does Placement Matter?

Firstly thank you for the feedback, its always good to get. The only way I can see you could balance the temperatures would be to throttle the UFH. ...

5 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Setback savings - fact or fiction?

In fairness I would expect the COP to change, because you are working the heat pump harder in setback (which is the whole basis of the argument that s...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is it KISS or constant – weather compensation vs. set flow temperature?

@cliffhanger suggest you reread my post above, I edited it after you looked at it. I found a video which helps a bit, but Grant do seem to have come ...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is it KISS or constant – weather compensation vs. set flow temperature?

@cliffhanger I have a pump with the 'factor' curves and, once you understand them they are easy to operate, easier in fact than the '4 point' system...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Newbie: utterly confused with my Mitsubishi Zubadan air source heat pump running on 55C set flow temperature

As others have implied, the latter (this is the most important thing to understand about heat pumps). In short the procedure is: Set all your...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Setback savings - fact or fiction?

Definitely - I didnt realise that they had a stake in the house in warehouse. Octopus also have access to 'big data' from their installed heat pumps...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
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