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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

Safe to say I don’t think upstairs is undersized rads. Hearing off over night and a number of windows open. Most rooms sitting at 18.5-19C. Landing 19...

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

@derek-m pipes connected seem same size. Honeywell valve detailed label was on bottom didn’t realise - attached. its a V4043H1056 I...

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

Photos of the downstairs valves. Note tonight I’ve actually turned off upstairs at the heatmiser as we’re just too hot upstairs. In morning going 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

Thanks Derek Longer runs to downstairs from trunk line - yes however - upstairs will have longer main tund total as the rear of downstairs is underfl...

1 year ago
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RE: Grant 13kW Aerona3 - issues getting zones to temp

Was surprised by them saying it was 22mm, this photo was the one that made me think the size differential between the main and branch to rads looked b...

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

Thanks @iancalderbank , we’re obviously past point of upping the pipes, am very frustrated they made such an error. however the upstairs uses same 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

Hi @iancalderbank , Swapped over probes looked like a similar diff initially, but now since running speed 3 on secondary pump these temps seem to ha...

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

Other photos seem to show a size diff that would indicate 28mm main or more, then 22mm, then 15mm copper at the end. The 22mm branches seem to be for...

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

Thanks @iancalderbank - waiting for the plumber to confirm the sizing as that was just the builder's guess

1 year ago
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RE: Grant 13kW Aerona3 - issues getting zones to temp

@iancalderbank - builder believes it's a standard 22mm flow and return into a 15mm drop for the rads. But is confirming with the plumbers

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

So all in all I see: Top right of LLH versus pipe in plant room leading to heating zone: 1C drop Total drops with drop from zone pipe to r...

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

Thanks Ian, I'll ask this with the plumbers. I think upstairs looks to be running of this also, as I know that's approx where a rad is above this ro...

1 year ago
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Air Source Heat Pumps (ASHPs)
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