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Marvinator80
@marvinator80
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Joined: Nov 29, 2022
Last seen: May 19, 2025
Profile Activity
Topics: 9 / Replies: 186
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RE: Our Grant Aerona R32 13kW ASHP installation

Have also ordered a digital room thermometer to make sure my Wunda UFH display temps are accurate. Upstairs is on Hive, I do think that is accurate. S...

2 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Our Grant Aerona R32 13kW ASHP installation

@mikefl the installer say the will service for Grant as G1 installers. Have messaged them to see if I can bring it forward as we are going on 11 month...

2 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Any Grant Aerona owners using their Low Loss Header immersion heater?

@jamespa it’s a 13KW with 250 litre Grant tank. It serves hot water and our downstairs UFC and 8 upstairs radiators. the house is 294 sqm, built by...

2 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Any Grant Aerona owners using their Low Loss Header immersion heater?

thanks James. Woke to 18.1 today which is not ideal after another frosty night. When the temp is above zero and no frost cycles we don’t have these...

2 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Our Grant Aerona R32 13kW ASHP installation

Another frosty night. Woke to an average downstairs temp of 18.1 upstairs 18.0. it needs to do better than that. If it can’t do better than that b...

2 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Any Grant Aerona owners using their Low Loss Header immersion heater?

There is no obvious space for the LLH in our utility room. Perhaps that is why it wasn’t installed. I wonder if adding an external volumiser would be ...

2 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Our Grant Aerona R32 13kW ASHP installation

Hello. So this will be our first full winter with the ASHP. It was installed around the 20th of January last winter and has been fine. One slight issu...

2 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Any Grant Aerona owners using their Low Loss Header immersion heater?

I think it’s safe to say it isn’t connected up. I’ve just looked at what the LLH itself should look like and seemingly I don’t have one. I’m pretty su...

2 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Any Grant Aerona owners using their Low Loss Header immersion heater?

Just went into the LLH parameters from Mike’s link. Mine was completely off. Now set to 3 and it also allowed for the LWT during defrost to be adjuste...

2 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Any Grant Aerona owners using their Low Loss Header immersion heater?

@mikefl hi Mike. Is this meaured in the same settings as you told me about the other day to measure the LWT and return temperature? Or configurable vi...

2 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Grant Aerona 13KW - can I boost it?

Woke to 17.5 to 18.5 throughout the house. Low of -6 overnight. have identified an issue though as the utility room was freezing and no feeling of ...

2 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Grant Aerona 13KW - can I boost it?

-3.5 outside now and indoor temps slowly rising, despite the defrost cycles every 45 mins.

2 years ago
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Air Source Heat Pumps (ASHPs)
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