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Dunlorn
Dunlorn
@dunlorn
Member
Estimable Member
Joined: Dec 14, 2022
Last seen: Aug 28, 2025
Profile Activity
Topics: 7 / Replies: 72
AllTopicsReplies
Reply
RE: Cosy Octopus and heat pump settings

Hi Jo. I've been on Cosy a few weeks now and, like you, have been wondering about this. I've got 10kWh worth of batteries so that is really helping me...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grundfos Secondary Pump Flow Rate

Thanks @iancalderbank. Yep, the calc is, er, somewhat sensitive as you say but as an approximation it's OK for now. I'll look into the metering you de...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grundfos Secondary Pump Flow Rate

Hi @iancalderbank, and sorry for the delay. Turns out there are more important things to do than fettle the heat pump 😂. The primary side pumps are ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grundfos Secondary Pump Flow Rate

Hi @iancalderbank, and thanks for that. I'll have a look at my pump situation when I've got a bit of time later. Just to answer your point about the...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grundfos Secondary Pump Flow Rate

Hi @iancalderbank. I've done some (crude) monitoring today with the system stable, looking at heat being generated and measuring secondary side flow a...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Keeping External CYG Skyline Batteries Warm

Thankyou @toodles, I am feeling quite pleased with myself I must admit. 50mm Kingspan all round but they are still fixed to a cold stone wall sucking ...

2 years ago
Forum
Energy Storage
Reply
RE: Keeping External CYG Skyline Batteries Warm

Hello @alanb. Wee heated lean-to enclosure now built and in operation. I've a wireless thermometer that's telling me it's 2.1°C inside (it's about -...

2 years ago
Forum
Energy Storage
Reply
RE: Grundfos Secondary Pump Flow Rate

@iancalderbank Thanks, that's really helpful!

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grundfos Secondary Pump Flow Rate

@iancalderbank Joule Samsung have just told me it's not possible to alter the 'slave' to remain on whilst the master goes into defrost. I thought thou...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grundfos Secondary Pump Flow Rate

@iancalderbank Yep, they both have separate controllers (currently linked) but can be reconfigured to run individually, controlled from a single run s...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grundfos Secondary Pump Flow Rate

Thanks @iancalderbank. You're not wrong about the hard work. We clearly don't need 24kW but have made some improvements to the house since the system ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grundfos Secondary Pump Flow Rate

Thanks @iancalderbank, that's helpful and good shout re the bigger pump. I'll look into that. I might need to start lifting a few floorboards as well!...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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