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Derek M
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Derek M
@derek-m
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Illustrious Member
Joined: Mar 4, 2021
Last seen: Sep 19, 2024
Profile Activity
Topics: 7 / Replies: 4403
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Reply
RE: COP for DHW using a heat pump

@technogeek If your hot water cylinder has an immersion heater, you could try the same test using direct electric at a known COP of 1. I can't rem...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My horrific Samsung heat pump installation and experience

@iantelescope When trying to ascertain what is actually happening within a system, I often find it is useful to put values into the equations to see...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My horrific Samsung heat pump installation and experience

@jamespa I think that I remember reading that in much colder climes the preference would be for split systems rather than mono, or possibly GSHP's.

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Rads warm when heating not on but ASHPs heating hot water

How warm are the radiators and do they remain warm? Are the radiators warm before the system changes to DHW heating? What is the temperature setting...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My horrific Samsung heat pump installation and experience

When water is open to the atmosphere the various gases within the atmosphere become dissolved into the water in a ratio of 35:1. Since the normal atmo...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Lg therma 7kw temp sensor help needed

If you don't have a copy of the installation manual, I would suggest that you Google the model number and download a copy.

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My horrific Samsung heat pump installation and experience

I believe the major cause of magnetite (black ink) is as described below:- Magnetite, commonly referred to as sludge, is the black substance compris...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: AC vs DC Coupled Batteries (PV + Battery setup)

Don't worry, I obviously knew what you meant, but I still think it is important that the correct terminology is used so that there is little room for ...

2 years ago
Forum
Solar Photovoltaic (PV)
Reply
RE: Lg therma 7kw temp sensor help needed

Welcome to the forum. According to the wiring diagram shown on page 49 of the attached document, it would appear that the temperature sensor should ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: AC vs DC Coupled Batteries (PV + Battery setup)

Please don't talk about AC Batteries - there is no such thing. The article included concerns a grid size solar PV and Battery Storage system, in a d...

2 years ago
Forum
Solar Photovoltaic (PV)
Reply
RE: ASHP decision: Should I or shouldn't I?

@cookie197 Hi Cookie, welcome to the forum. It would be interesting to know about the grant system in Wales in comparison to the £5000 grant now b...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Very noisy Daikin Altherma

@sobo As I think has already been pointed out, heat pumps are noisier when they are working harder (producing hotter water or during the defrost cyc...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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