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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Aug 25, 2025
Profile Activity
Topics: 17 / Replies: 2699
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RE: Grant Aerona3 - Home Assistant control via Modbus

I find it faintly amusing that nobody ever worries about a heat pump cycling more or less continuously when it's their fridge, but gets extremely conc...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona3 - Home Assistant control via Modbus

You are right that the lag from when the heating controller responds to when the house responds is of course the same whether the controller responds ...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona3 - Home Assistant control via Modbus

This is how I would set it up Firstly a WC curve tuned to house. Start at 20 Deg outside and min flow temp of heat pump 20 or 25. End point at your...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona3 - Home Assistant control via Modbus

That's fair enough, I did say that there are exceptions (I think the only significant ones may be wind and solar gain) and there is no perfect solutio...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona3 - Home Assistant control via Modbus

Because of the lag in response. Simple as that. Look to control theory to explain why this is a problem. If your house has the thermal characterist...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona3 - Home Assistant control via Modbus

I'm answer to all of that, my house is much more stable run on pure WC than it ever was on a temperature sensor (with a boiler or a heat pump). This ...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona3 - Home Assistant control via Modbus

On what do you base that assertion please? There are plenty of people on this forum running on pure wc achieving comfortable and stable house temper...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat Pump Manufacturers Recommending Buffer Tanks

I'm curious who you think are the reluctant ears. Certainly not me, and if you do think i am one of the people you refer to, then you are misundersta...

3 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Commencing on an ASHP Installation Process

If that is the case then I would add to my earlier post: I would try to avoid getting a heat pump now that will be significantly oversized once the...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Commencing on an ASHP Installation Process

I'm not sure expecting consensus is realistic as the solution, given the conservatory situation, depends as much on your preferences and use patterns ...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat Pump Manufacturers Recommending Buffer Tanks

Thanks for that thoughtful reply. Unfortunately we get far too many reports here where 50l 4 port buffers have been installed 'because that's what ...

4 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Heat Pump Manufacturers Recommending Buffer Tanks

@damon thank you for posting. Would you care to tell us in what circumstances you fit a buffer tank, why, and how you set it up to avoid a cop penal...

4 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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