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Crimson
@crimson
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Joined: Jan 16, 2024
Last seen: Jan 28, 2026
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Topics: 4 / Replies: 300
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RE: Grant 13kW Aerona3 - issues getting zones to temp

New learning. Concept of a heat dump is a good one to get longer cycles and side benefit of heat from towel rads upstairs throughout the day. Howeve...

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

Thanks Toodles! I'll sort this now, as I can see my office temp is climbing (currently 21.3C) and suspect that's because the upper floor is warming ...

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

Thanks @iancalderbank, I can give that a go, perhaps all upstairs rooms bar my office as a first attempt. Just a note - if TRVs were all down to 1/2 ...

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

(apologies for post blitzing yet again - posting as find things etc) Architect responded, heat calc was last one sent over however architect pointed...

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

This AM Iā€™ve had to put the ASHP on the weather curve as itā€™s simply too warm upstairs with the ASHP running at 42C fixed (seems to be get 1.5V-2C low...

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

Thanks Derek, Iā€™ll see if can find an hour to do this tomorrow. With the cycling it might be hard to get this however, perhaps recordings every 10 min...

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

On another note (realise Iā€™m post blitzing but trying to comprehend as much as possible). if currently today Iā€™ve run the system with no weather...

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

Thanks again for all this. Iā€™ve relayed it to architect and also queried things in the Calc doc as some rooms structure dates etc are wrong and a numb...

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

This was the battle I had I think in June last year, they were just useless and I asked if we could get other plumbers but was reassured (incorrectly ...

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

hi Derek, I think the issue was what they suggested in these calcs couldnā€™t fit and they started going on about adding 2 tall rads with shorter ones (...

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

hi Derek those are the ones installed. So essentially they were talking about D20 when really should have been talking about D15? And werenā€™t referrin...

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

Hi Derek, I have the to hand, but not posting here as has address details, happy to DM you directly if useful? I believe the calcs were done based o...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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