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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

oh dear oh dear. 22mm plastic is not a big enough pipe for a distribution trunk for a floor's worth of radiators in a system at ASHP flow rates. if it...

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

@crimson you could try increasing the pump power on the secondary side, that will increase head and flow rate thus increase your chances of getting a ...

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

hmm. I'm not liking what I see in picture pipes 2. You can there's a junction between a larger pipe and a smaller. That tells me that probably the...

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

@crimson pipes acting as radiators can be the issue accounting for temperature drop, but also flow rate. That plastic pipe in your picture, hard to ...

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

@crimson basically - exactly what toodles said! set all TRV's to max (or better, take them off) whilst doing lockshield balancing. The lockshield se...

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

@crimson have you tried (with all zones and all trv's open) pinching the lockshields down somewhat on the rooms that do heat up well, so as to force m...

1 year ago
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Air Source Heat Pumps (ASHPs)
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RE: Stiebel WPL 25 heat pump in South Wales with no insulation

@transparent @shaeney I'm impressed by the use of a Spirotech Spirotrap high flow rate low head resistance dirt filter. Its only the second one I've e...

1 year ago
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Air Source Heat Pumps (ASHPs)
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RE: Grant 10kW versus Samsung 12kW - sizing dilemma with ECO4 installation

@tobyg sounds good to me. much more likely your house is under 10kw heat loss than over and the lower modulation capability of the grant will help yo...

1 year ago
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Air Source Heat Pumps (ASHPs)
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RE: Grant 10kW versus Samsung 12kW - sizing dilemma with ECO4 installation

we're talking about the same thing. If you want to allow your room temps to vary by +-2c you'll need a 3rd party thermostat (thats a 4C swing). Not su...

1 year ago
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Air Source Heat Pumps (ASHPs)
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RE: Samsung Gen6 12KW heat pump and pasteurisation cycle - only uses the booster

@peterrsaltings not quite sure why you @'d me into here, I don't run legionella via my controller at all. I heat the whole tank to 55C every day with ...

1 year ago
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Air Source Heat Pumps (ASHPs)
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RE: Grant 10kW versus Samsung 12kW - sizing dilemma with ECO4 installation

@tobyg the 1C swing between on and off is native to the samsung controller when used as thermostat. if you want a different window to that, you need t...

1 year ago
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Air Source Heat Pumps (ASHPs)
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RE: Grant 10kW versus Samsung 12kW - sizing dilemma with ECO4 installation

you can of course adjust the flow temperature that it runs at post install. But, if you adjust it to lower than what your radiators have been sized fo...

1 year ago
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Air Source Heat Pumps (ASHPs)
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