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Terry Nolan
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Terry Nolan
@haggistrap
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Eminent Member
Joined: Jan 29, 2024
Last seen: Apr 12, 2024
Profile Activity
Topics: 0 / Replies: 15
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RE: Problems with Daikin 18 kW High Temp ASHP

Just curious on COP. Mine is sitting around 3.3 -3.5 with outside temp 8 to 10c. Don’t want to get in to mine is better than yours but I think that’...

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

Update on my Daikin HP. so, apparently a number of these Daikin HT ASHPs were sent to the UK with insufficient refrigerant gas. Today, My Daikin en...

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

@hughf totally agree and I’m likely to do this in the summer. however, Daikin installer and Daikin specs of my HP tell me this is not required for t...

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

@bramshot thanks for the reply and PM my HT can operate up to 70c for LWT, according to the below manufacturer info. In the real world, in Scotl...

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

@derek-m thanks again! we agree! The outside temp hasn’t got above 5c, hence why I have set it to the absolute lowest min flow temp at 55c over win...

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

@derek-m thanks. however the house needs a min 55c flow temp to effectively heat it. I’ve done this to lower the temp from higher temperatures, to ...

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

It’s a high temp heat pump. Marketed and sold as a retro fit for gas boiler, designed to run up to 70c it’s set to fixed 55c temp.

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

Some graphs if anyone can suggest why my HP seems to not maintain a constant “leaving water” temp more constantly. In the examples below there are th...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Refrigerant in Daikin Altherma HHT taking hours to heatup

Not got the answer but sounds like it could be similar to one of my posts. Have a look? My HT Daikin freezes far too often when cold, then struggles...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Battery system for cheaper heat pump running

I did my own g99, region SW Scotland so Scottish power. My understanding, if you stay under 16amp and can only export from one inverter, g98 is fine....

2 years ago
Forum
Energy Storage
Reply
RE: Problems with Daikin 18 kW High Temp ASHP

@derek-m I get the principal of how HPs operate. But these HT ones specifically state they run up to 70c. my house on the OP’s are not set up to op...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Battery system for cheaper heat pump running

I have a solax system, I actually have x6 of the 5.8kw batteries. does it work, yes, very well. I charge at night I’m on eon drive, fixed tariff....

2 years ago
Forum
Energy Storage
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