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Marzipan71
Marzipan71
@marzipan71
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Joined: Nov 12, 2022
Last seen: Nov 26, 2025
Profile Activity
Topics: 4 / Replies: 105
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RE: Air source heat pumps and noise

Very interesting. A neighbour of ours was considering getting an ASHP and her first question was 'But aren't they terribly noisy?'. I'm not sure where...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Air source heat pumps and noise

Hi @editor sent mine over - video from 19/12 with the outdoor unit from our 16kw Daikin Altherma HT struggling to drown out ambient bird song 😀...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Radiator flow and return temps with my ASHP

@toodles I'm definitely going to look into Homely in 2024 for my Daikin Altherma HT. My system always seems to be an outlier for some reason and I'll ...

2 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Radiator flow and return temps with my ASHP

Thanks @hughf - our replies crossed in the post it seems. Yes, I may be spending too much time worrying about the delta t across the radiators as we h...

2 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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RE: Radiator flow and return temps with my ASHP

Hi @derek-m yes I had no idea how that thing worked and I'm glad I now do! Our auxiliary pump (Evosta 2) is set on speed 1 (lowest). Should tightening...

2 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Radiator flow and return temps with my ASHP

Just to add @derek-m I was able to find a diagram (for a Caleffi competitor, but I assume its the same) which shows the flow arrangement for these 'co...

2 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Radiator flow and return temps with my ASHP

Hi @derek-m thanks for reply. I did indeed try using a thermometer - a cheap meat thermometer was all I had to hand that could be inserted between the...

2 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Radiator flow and return temps with my ASHP

Hi @derek-m thanks for reply, apologies for delay – kids football got in the way of me tinkering with the LLH. So – photo attached of the LLH with apo...

2 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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RE: Radiator flow and return temps with my ASHP

Yes I mentioned in the (overlong) intro post that there's an LLH, which I suspect may be important...

2 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Radiator flow and return temps with my ASHP

Hi @derek-m thanks for the pointer. I'm using one of these and one of the use cases they give is for checking heating performance; that said, I checke...

2 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Topic
Radiator flow and return temps with my ASHP
2 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Replies: 17
Views: 4092
Reply
RE: Heat pump delta T too low - 2c

Thanks @heacol that makes sense - we have a LLH so I assume that counts as a buffer tank for the purposes of deciding if this is worthwhile (i.e., pro...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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