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Crimson
@crimson
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Joined: Jan 16, 2024
Last seen: Nov 25, 2025
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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
Forum
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
Forum
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
Forum
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
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

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

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

Thanks Derek, I’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
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

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

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

Thanks again for all this. I’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
Forum
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 couldn’t fit and they started going on about adding 2 tall rads with shorter ones (...

2 years ago
Forum
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 weren’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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