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Bramshot
@bramshot
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Joined: Nov 29, 2022
Last seen: Apr 12, 2024
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Topics: 1 / Replies: 16
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RE: Problems with Daikin 18 kW High Temp ASHP

@haggistrap I have no idea what the COP is mine does not tell me anywhere. The HP is effectively on most of the time. I only use Heat on Demand for ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Problems with Daikin 18 kW High Temp ASHP

@hcas I use schedules both with the wall stat and TRVs.

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Problems with Daikin 18 kW High Temp ASHP

@haggistrap Mine is ok until ambient gets down nearer freezing, say sub 4 degrees. Be interesting to hear how yours performs with a full charge of ref...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Problems with Daikin 18 kW High Temp ASHP

@toodles Hive is working fine for me after the mods I did. However, I agree it would have been useless without it. Hive do not actually recommend its ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Problems with Daikin 18 kW High Temp ASHP

@haggistrap Those are porky pies. It will not give those outlet temps. I will look through the data sheets I have but I am petty sure they say differe...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Problems with Daikin 18 kW High Temp

@haggistrap Terry, our HP do not run at 70C. 55 is about the max. It will run cooler . Mine is weather dependent and runs between 35 and 50 normally f...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Problems with Daikin 18 kW High Temp ASHP

@oswiu have you model before, External unit is EPRA18DAV3, supposedly a 18 kW High Temp Altherma unit. If is installed as per instructions , no stru...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Problems with Daikin 18 kW High Temp ASHP

@batalto Thank you, I am well aware of the physics , but you have to make enough heat to warm the house adequately. My present weather compensation is...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Problems with Daikin 18 kW High Temp ASHP

@batalto It will not make any difference unless it stops continuous defrosting, or at least significantly extends the interval between defrosts. I can...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Problems with Daikin 18 kW High Temp ASHP

@batalto I know and understand what you mean. I am trying to work out what temp I should set for the current ambient, based on what it is reaching on ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Problems with Daikin 18 kW High Temp ASHP

@batalto will reduce further tomorrow, just trying to work out what the mean temperature ( with the HP cycling on and off), is at the moment that is m...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Problems with Daikin 18 kW High Temp ASHP

@derek-m yes weather compensated. Will try lower temperatures tomorrow.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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