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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: Heat pumps and on/off working - starting to quantify it

I'm afraid your figures just don't add up. To supply 12kW of thermal energy at a LWT of 28C, you would require heat emitters with a total capacity o...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Noise/ Planning Expert

@ericdo I suggest that you also ask the local authority if these, what would appear to be very stringent, noise restrictions apply equally to all yo...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan appears to be ignoring Temperature Compensation

@mcwatson1974 TH1 is the remote room temperature sensor (hardwired or wireless), which is an optional extra. I suspect that you do not have this ins...

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

Maybe you should complain to your MP to do something about those pesky clouds. I thought that is why they keep installing all those 'big fans', to blo...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Noise/ Planning Expert

@ericdo I am not an acoustics expert, but I do try to apply the laws of physics and common sense to try to resolve problems. What we as humans und...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan appears to be ignoring Temperature Compensation

I would suggest as a check, that you set your system into fixed Leaving Water Temperature (LWT) mode, with an approximate setting for the weather cond...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pumps and on/off working - starting to quantify it

This is one of the problems, since as the LWT is reduced, the quantity of thermal energy that can be transferred to the heat emitters is also reduced,...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pumps and on/off working - starting to quantify it

There are often additional screens available under the installer login, which you may be able to access. Maybe some Daikin owners can guide you?

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pumps and on/off working - starting to quantify it

I remember Hydros, but not the details. What was the outcome?

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pumps and on/off working - starting to quantify it

Yes, when I say heat pump starting and stopping that would indeed include the compressor, and may or may not include the water pump. A heat pump sho...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pumps and on/off working - starting to quantify it

@newhouse87 If your heat pump is starting and stopping 6 times or more each hour then it is deemed to be short cycling, which should be avoided. Sta...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pumps and on/off working - starting to quantify it

If the heat pump has stopped, but the water pump is still running, then the LWT and RWT should be approximately the same. Some thermal energy will sti...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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