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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

Oh and the lower 4 port mystery black valve. That’s connected to a water softener

3 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 this obviously not accurate but top right much hotter than top left to touch. At one point top right was very cold to touch v top left. Currently b...

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

Looks like I have same brand LLH as this one:

3 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 both, picture attached (apologies if I'm not addressing all queries, perodically looking at this whilst working so not my full attention today....

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

@allyfish Afraid don't have more details, will ask plumber about the black 4 port valve. That flow rate, seems to be same atm and it's definitely ru...

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

It's a good point about pipe insulation, will raise that (it is lovely and warm in there lol). Outside is insulated after randomly a decorator on sit...

3 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've messaged plumber the temps of the zones (19.5 kitchen/diner, 17.5c downstairs, 18c up stairs) and he's saying he probably needs to put in a warra...

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

Here are some more photos attached. C doesn't look like it's a Grant part

3 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 Mike, I'll get back to you on all this later today when get home. For the heat requirement looking at the heat calc doc it states: When...

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

@gary no problem I’m only getting my head round this. I did do the rad sizing with them back in June I think so am having to warm up some old cells. ...

3 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'll raise this with the plumber (heating installers), thanks Gary. Not sure why everything was indicated then to use DT 20, that would be a huge mi...

3 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 Mike, sorry wasn't clear. Whole house project was a full renovation/extension project with the heating system done as part of it. It's all brand...

3 years ago
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Air Source Heat Pumps (ASHPs)
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