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Derek M
@derek-m
Member
Illustrious Member
Joined: Mar 4, 2021
Last seen: Sep 19, 2024
Topics: 7 / Replies: 4403
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RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

Having looked at the two articles, I think that the author seems to be arriving at conclusions on very limited data. I also note with interest that ...

3 years ago
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RE: Real world advice on ASHP installation - 2 18kW ASHP's recommended

I fully agree with all the previous poster's comments. The starting point should be to insulate as much as possible to the highest standard, since i...

3 years ago
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RE: Grade-A boiler manufacturer with an interesting brief

This unfortunately is the World in which we live. Not all manufacturers design and produce goods of good quality, since it is not necessary if they ca...

3 years ago
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RE: Grant 13kW Aerona3 - issues getting zones to temp

Hi Crimson. Looking at the photo above, the downstairs valve would appear to be in the closed position. I would suggest that you raise and then lowe...

3 years ago
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RE: Grant 13kW Aerona3 - issues getting zones to temp

I suspect that you may be getting the DT's confused. The standard thermal output of radiators is normally specified at DT50, which means the average...

3 years ago
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RE: Performance in the current cold snap…

I suspect that it will not be possible to accurately control the LWT during milder weather conditions, simply due to the fact that the heat pump will ...

3 years ago
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RE: Performance in the current cold snap…

What kind of control system are you using, is it a single loop or a cascade (master - slave)?

3 years ago
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RE: Performance in the current cold snap…

To be quite honest, if it was my system I would make a complaint to MCS and any other body responsible, that Freedom Heat Pumps have designed and inst...

3 years ago
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RE: Performance in the current cold snap…

The frequency of measurement is indeed an important factor in obtaining accurate and precise values. Temperature is one of the variables that can cope...

3 years ago
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RE: Performance in the current cold snap…

@cathoderay I forgot to ask. Did the OAT actually increase by something like 9C over a 3 hour period?

3 years ago
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RE: Performance in the current cold snap…

@cathoderay If I may offer a little advice from observations about your system and those of others. It is my considered opinion (and I think that ...

3 years ago
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RE: Performance in the current cold snap…

You, as a warm blooded human, will feel the effect of wind chill, so if air is flowing around you it will feel chilly. The actual sensors are relati...

3 years ago
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