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Crimson
@crimson
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Joined: Jan 16, 2024
Last seen: Dec 9, 2024
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Topics: 4 / Replies: 210
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RE: Grant 13kW Aerona3 - issues getting zones to temp

Heat specialist came yesterday. Initial impression was downstairs rads seemed physically small. And by comparison felt upstairs was oversized. Ov...

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

Starting to see that even though downstairs calls for heat, when other zones don’t the ASHP turns off due to equal temp in and out. Soon as I upped un...

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

I'm going with: 2102 - 40C 2103 - 35C That's around 38C at 7C outside. This morning, combined with a bit too much of a drop for upstairs aft...

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

Oh definately. The house proportionally the said downstairs zone is also the largest, with 2 rooms equal to underfloor zone. I think the hall and land...

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

Changing the secondary pump to speed 1/3 seems to have had quite an impact. Downstairs can hit 21c consistently. However effectively almost running 24...

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

Yeah, I've set it back to 45C to see how it goes today/overnight. It's 3C outside. Downstairs zone is showing 20.2C. Probe in living room 19.4C. I...

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

Plumber clarified his changes (he never mentioned he’d upped 2102 to 53.5C) ASHP pump speed changed to 1 At manifold - each loop set to 1 litre a ...

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

I’d forgot to change the leave temp to 21c downstairs. Heatmiser showed 19.8c first thing. That’s after 2 hours of 21.5c temp call for. House was ve...

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

Yeah, I'm hoping between the lagging and some balancing done today that won't keep happening. Removing 2 of the hot water cycles helped as well. Wi...

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

I had it at 22c on and 21c 'off'. So technically it just never reached 21C at all - the zone always calls for heat. I'd not seen 21c in the room its...

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

Thanks Mike, I'll give 3-4pm a go tomorrow to compare against today on our usage.

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

Yeah, I had actually changed 2102 from 50 to 45C for a few days and didn't notice any difference in the downstairs temp before (maybe .1-.2C temp when...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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