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iancalderbank
@iancalderbank
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Joined: Oct 17, 2022
Last seen: Jan 14, 2025
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Topics: 0 / Replies: 643
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RE: Grant 13kW Aerona3 - issues getting zones to temp

google translate polish to english: "hydraulic clutch" or "hydraulic coupling". a.k.a low loss header. That is the generic name for what it is, not th...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

typical experience here is that LLH's are just a dumb box with 4 holes. I've seen documents about complex ones with internal baffles to direct flow, b...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: No-code, plug-and-play monitoring for your heat pump

@mars interesting you picked up on this too. I read up on it a few weeks back. so far as I can tell, its method of connecting to the HP is fundamental...

2 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Secondary pump speed - how much slower should it be?

so I get that with a good control and a tall stratified buffer, mixing could be avoided. however : If the sides are still not at the same flow rate : ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Is the Samsung Gen 6 12kW AE120RXYDEG ASHP right for me?

@tobyg multiply by 0.85 for boiler efficiency then divide by 24 for a very simplistic heat loss figure.

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

if they'd fitted a proper quality unit instead of the Mag One, they wouldn't need both. Spirotech Spirotraps do non-magnetic dirt as well. get one o...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

@crimson that 2 port bypass valve that you've identified for derek-m is another piece of stupidity in this install, but its not the first order proble...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

@crimson insulation looks mostly ok. what you have not got is a huge long uninsulated length (that was worrying me with the temp diffs). so hopefully ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

there is, but if you read up on pump curve hydraulics as I've been doing the last few weeks, the maths is painfully non linear. you need rapidly incre...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

ok lets hope the insulation over the probes brings these closer otherwise its just another indicator of an issue. following the pipes all the way fr...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Need ASHP advice for old (1882) stable development in SW Scotland - where do I begin?

half a dozen heat geeks in scotland now. improving all the time. Start with one of them.

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

except its not, according to the LLH temp probes. Something very odd is going on here.

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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