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Gary
@gary
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Joined: Feb 8, 2023
Last seen: Aug 13, 2025
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Topics: 2 / Replies: 348
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RE: Ecodan ASHP - How to optimise my set up?

@skd That is a good point but it is only on FTC 6 it’s not on FTC5 or at least I don’t have it on my FTC5

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan ASHP - How to optimise my set up?

@derek-m At current mild OAT its all run from battery charged off-peak supplemented with solar if required, I run house/heatpump/charge battery from t...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan ASHP - How to optimise my set up?

@derek-m turns on at 21C off at 22C, its came on at 1.30pm today will probably hit 22C around 6.30 so 5 hours run time no cycling at 1kwh. Once its ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan ASHP - How to optimise my set up?

@rich I have an 8.5kw ecodan to keep cycling to 1 per hour at any temp below 10C I need to run at 32C, anything less leads to a lot of cycling. That...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan help with efficiency setup and design - removing manifold mixers, LLH and pumps

Nice work - my system is almost identical to yours, I look forward to seeing if you get any efficiency benefits.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan ASHP - How to optimise my set up?

That will be because it was warmer outside more heat in the outside air means the heat pump has to work less and therefore more cycling.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Daikin Altherma 3 R Low Temperature Split ASHP cycling and flow rate issues

Welcome it sounds like your heatpump is too big for your property and as you have found out over zoned. It sounds like you have it running as good a...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan ASHP - How to optimise my set up?

@jaket The heat pump can only either heat hot water or supply the central heating, it cannot do both at the same time. It looks like your hot water ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan ASHP - How to optimise my set up?

@sunandair could you post a link to the databook please

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan ASHP - How to optimise my set up?

@sunandair I agree, I remembered this yesterday then forgot again, thanks for posting

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan ASHP - How to optimise my set up?

@jaket as the unit is cycling so much you wont get a stable dT from the brief periods its stable it looks like it would be 35C flow 32 return so a dT ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan ASHP - How to optimise my set up?

@jaket Hi- your getting there its cycling less than it was, increase the temp further and see if you can get rid of it.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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