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HydroS
@hydros
Member
Estimable Member
326 kWhs
Joined: Dec 17, 2021
Last seen: Nov 30, 2023
Profile Activity
Topics: 2 / Replies: 57
AllTopicsReplies
Reply
RE: DHW contributing to space heating?

@kev-m I think that’s a fair challenge and has been bought up on that site too, I didn’t write the content, just contributed my experience with the in...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: DHW contributing to space heating?

@greekgoddj @transparent was referring to a thermal storage to hold energy, this is different to the basic DHW cylinder. Check out this article where ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 12kW Vaillant aroTHERM plus in the Scottish Borders: please help cure my COP envy

@jonathans good spot. I did contribute to that post over on the OVO forum. I was initially a causality of a poor installer but after a lot of to and f...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Installation standards

@peterr I’m part of a trial looking at retrofitting ASHP to properties and my system was audited. The external insulation on the flow/return was picke...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: General advice on ASHP please

@toml1981 I have a four bed house, obviously could be lots of other differences, but I’ve been running my system as Derek describes for the last two w...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Say hello and introduce yourself

@alec-morrow welcome to the forum, I’ve only been here a few weeks. As a casualty of an underperforming ASHP controlled by a dodgy thermostat it’s goo...

2 years ago
Forum
Introductions, Forum Rules & Updates
Reply
RE: ASHP Cycling On/Off - Is it an issue?

Thanks Derek Ive used your numbers, I don’t think they are far off my pump, the Daikin is smaller but isn’t quite as efficient, so close enough for ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP Cycling On/Off - Is it an issue?

Not sure it makes much difference but the total emitter output at deltaT50C is 21500w, another thing incorrect on the original installers heat loss re...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP Cycling On/Off - Is it an issue?

@derek-m I've put my numbers in to your modelling sheet. Not entirely sure I understand what is that's going on, but if I'm reading it correctly I ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP Cycling On/Off - Is it an issue?

Hi Derek I balanced the system about a month ago but it's not been done by a professional. I've watched some YouTube videos and have a IR thermomete...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP Cycling On/Off - Is it an issue?

@saenergy My controller is set to a 7C differential but I'm definitely not seeing that differential at the lower leaving temperature, though the ho...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP Cycling On/Off - Is it an issue?

@derek-m Hi Derek I would be good to try some different numbers in a modelling tool. Are you able to send me a copy please? COP still hovering ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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