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cathodeRay
cathodeRay
@cathoderay
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Joined: Feb 28, 2022
Last seen: May 8, 2025
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Topics: 17 / Replies: 2033
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Reply
RE: Grant Aerona Setback

@allyfish - I posted my first overnight setback plus recovery boost data earlier today and it shows pretty convincingly that in my house in last night...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
Do setbacks save energy without compromising comfort?
2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 842
Views: 80244
Reply
RE: Grant Aerona Setback

That's fine, it is just it would have been interesting to see the data if it was available. Given my modbus setup, I should now be able to get minute ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona Setback

I think this is an interesting question. In both cases, the intention is to lower output, though the reasons are slightly - but are they materially? -...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona Setback

I've just read the Grant link above ("Blog | How to control your heat pump") and it seems the terminology is somewhat confused as to what a setback is...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona Setback

Isn't this possibly over-complicating things, as I pointed out earlier, using a room stat setback acts in effect as a timer (at least it does in my ho...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona Setback

@derek-m I didn't quote you (no quotation marks, and my wording is 'appear to be firmly of the opinion', not X said Y), I paraphrased you, or you mi...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona Setback

Just to add an observation on this: I did in fact manage to do this, in the cold snap last December, by using the room stat: normal target IAT is 19 d...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pumps and on/off working - starting to quantify it

That sounds very plausible, except for the fact the LWT rise appears to start just before the RWT rise, see at around 0703h. The four phase pattern is...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pumps and on/off working - starting to quantify it

Here are the minute by minute energy values alongside the minute by minute temp values I posted earlier. Note they are Wh, not kWh, and, as a sanity c...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pumps and on/off working - starting to quantify it

@rod - I do have a separate third party kWh meter that supplies only the heat pump but maddeningly it is not modbus enabled, meaning I can only get re...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pumps and on/off working - starting to quantify it

Anatomy of a cycle: here is a single cycle from my heat pump, from around 0640 to 0720 this morning. This has been the pattern for the last few days, ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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