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Uk_pete_2000
@uk_pete_2000
Member
Estimable Member
387 kWhs
Joined: Nov 11, 2024
Last seen: Feb 16, 2025
Profile Activity
Topics: 1 / Replies: 68
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Reply
RE: Grant Aerona3 R32 HPIDI17 performance in low temperatures

Hi, ours is a 13kw system. Are you talking about heating the home or DHW when you say 10c ? Or is that outside temps

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Balancing a low loss header/buffer tank on a Grant Aerona 2 13kw r32 system

@jamespa sorry my bad. Yes it's the middle readings that have a temp probe. The are ordered as ABCD I've just turned on all the pumps and set them t...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Balancing a low loss header/buffer tank on a Grant Aerona 2 13kw r32 system

@jamespa We can ignore the house heating load. Yes it's low on the ch side, it only needs 23° - 25° in the ufh to get to 19° in the room. Grant a...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Balancing a low loss header/buffer tank on a Grant Aerona 2 13kw r32 system

Yes we now know it is oversized, but at the time we didn't so did not question the maths / sizing etc. Only after we have run it and found we did not ...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Balancing a low loss header/buffer tank on a Grant Aerona 2 13kw r32 system

Happy to answer any and all question but i have no idea of the various acromns used, or what each one means I just read the meter that's attached to t...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Balancing a low loss header/buffer tank on a Grant Aerona 2 13kw r32 system

That's fine. We use 1300kw of electricity. No idea what heat this produces as installed said we lost nearlly 30,000kw which work out we needed 10kw of...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Balancing a low loss header/buffer tank on a Grant Aerona 2 13kw r32 system

We have 24 loops as the house is 500m2. Due to the size, we would not get any decent loops if all run from one spot of the house. Hence 3 manifolds an...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Balancing a low loss header/buffer tank on a Grant Aerona 2 13kw r32 system

@jamespa the problems is two fold - 1/ I have to run the ashp much higher than required to get the right amount of heat in the ufh. ( ie the ashp ha...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
Balancing a low loss header/buffer tank on a Grant Aerona 2 13kw r32 system
4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 14
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