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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Aug 15, 2025
Profile Activity
Topics: 17 / Replies: 2692
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RE: Newbie: utterly confused with my Mitsubishi Zubadan air source heat pump running on 55C set flow temperature

Sensible. After you have done that perhaps consider what is triggering reheat. It looks like its DHW tank temperature alone not a timer plus DHW t...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Noise problems with newly installed Samsung 8kW ASHP

Unfortunately the UK is a small market, we are essentially reliant on the EU (where of course we no longer have a seat) to implement the manufacturing...

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

It looks like Eco mode may have tamed the DHW curve a bit (see below), but a COP of .87 is less than 1 and you would be better off heating on the imme...

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

Indeed. Its weird at first but you get used to it and actually it is more comfortable because the temperature gradients are less. There is a school...

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

So I have been thinking about this and trying to rationalise it with three other things namely (a) the Carnot equation which means that COP reduces ...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Noise problems with newly installed Samsung 8kW ASHP

This sounds like a problem that might be fixed, or certainly improved, with a bit of optimisation of the set up if you are prepared to provide some mo...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: help with new bathroom and towel radiator

Yes it is. Steel narrowboats have zinc anodes for the same reason, but the steel still rusts, just less slowly. I have not personally heard of...

5 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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RE: New Heat Pump - mixer shower pressure

He may well be right. I have 9 bar which, on one occasion, burst open a steel radiator (with a bit of help from my stupidity).

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: help with new bathroom and towel radiator

Except that water is a conductor. Galvanic corrosion is a well known process problem with steel narrowboats, with the conductor being the water, s...

5 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Servicing of an ASHP above a flat roof

Yes it can be a problem. When we put our solar panels on a flat roof one very serious consideration was access to clean the windows! The window cle...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Say hello and introduce yourself

@stevehsp Can I suggest you read the introduction to ASHPs here as it will help understand the technology. In terms of quote time choices don...

5 months ago
Forum
Introductions, Forum Rules & Updates
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RE: Servicing of an ASHP above a flat roof

Possibly you could have movable barriers available. The principal risk I think is forgetting you are on a flat roof, stepping back and... barriers p...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
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