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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: Grant ASHP not reaching target temperatures

Please post some photo's of the equipment within your system, so that the forum can get some idea of how your system has been installed.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Any Grant Aerona owners using their Low Loss Header immersion heater?

This cold damp weather is certainly sorting 'the men from the boys' as far as heat pumps are concerned.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Poor COP with an Ecodan

You should not worry too much about the DT, if your heat pump is keeping your home warm in an efficient manner. If you have a low flowrate and low DT,...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is the Grant controller a thermostat?

I'm afraid that it is the Laws of Physics to blame, as just like a wife, they insist upon being obeyed. 🙄 (sorry Amanda, or whoever it was complained ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Poor COP with an Ecodan

You need to reduce the pump speed to increase the DT.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Poor COP with an Ecodan

Sorry Adam, my comment wasn't directed at you, I was being facetious as usual. In other threads we have recently been discussing how much upgrading ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Optimising ecodan ASHP

It is surprising how many problem heat pump installations are by installers who are no longer trading (or at least not under the original company name...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Poor COP with an Ecodan

@adam_colwell Let me see now, if everyone had a smaller, well insulated home, would we need all these wind and solar farms, and the vast amount of g...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do setbacks save energy without compromising comfort?

@jamespa The baseline was 0C, with the estimated value being at an IAT of 20C, so that would give 13kWh/C. Note that this was based upon the fall ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do setbacks save energy without compromising comfort?

@jamespa You need to remember that although comprehensive, the raw data does have certain weaknesses specific to CathodeRay's system. There is sti...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Mitsubishi Ecodan 8.5kW Monobloc (FTC5) Defrost Mode

I would suggest that you start by posting a photo of the main screen display, since it should then be possible to identify the present mode of operati...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is the Grant controller a thermostat?

You would need to provide the full details of your system for a correct appraisal to be made. It could be that your system has not been correctly desi...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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