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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: 4405
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RE: How are Ecodan CoP quotes from MelCloud setups?

I have just been looking at the Ecodan manual for a different reason and remembered your post. So taking your figures of 630kWh last year, that gives ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Secondary pump speed - how much slower should it be?

Thank you for the very kind offer, but it was my feeble attempt at a joke. If my wife and I were to visit Portugal in the not too distant future, whic...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Secondary pump speed - how much slower should it be?

@davidalgarve Oh, I forgot to add, that we will all need to come and stay with you for a couple of weeks this Summer, to check that any modification...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

Having measuring equipment can be highly useful, though sometimes the results have to be interpreted carefully. Measuring the temperature of a pipe do...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

The bottom right temperature is probably high because the primary flowrate is now much higher than necessary. You could try dropping the pump speed. ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Heat pump size advice – is 16kW overkill for this property?

I suppose your neighbour could conveniently forget to pay the bill until the warmer weather comes along and the systems operation can be assessed. I...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

I'm pleased to hear that your problems appear to have been resolved. So the plumber was correct, the problem was the LLH. Was he the one who installed...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Secondary pump speed - how much slower should it be?

It is always difficult knowing what to do for the best, particularly when the advice being provided may differ slightly. It is equally difficult try...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pump size advice – is 16kW overkill for this property?

I may be interested, let me know your ideas.

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

So it would appear the the moron, sorry plumber, who originally installed the buffer tank, must have been absent from the training course when the tra...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

Did you try the test that I suggested, stopping the secondary water pump and seeing how long it takes for the heat pump return temperature to increase...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

Yes that appears to be a bypass valve. Check the the temperature of the pipes either side to try to ascertain if there is flow going through it. It lo...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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