Last seen: Jan 26, 2023
I opened the valves on the actuators (white valves in the picture). This was to have an open system for the pump to heat the whole house at once. Orig...
Is there any reason to believe changing the delta T to 3 when it's milder outside is detrimental? I guess the trade off is possibly a circulation pump...
Yes it might be this asas I have never seen the pump go below 10l/min, which for a delta T of 5 that means 3.5kW. But then I do not understand why I c...
Does this mean that a smaller, 9kW heat pump can avoid cycling simply because it is "allowed" to have lower flow rates? If mine cannot go, say, below ...
Thank you for your explanation, I will need to think about this. Because I am still struggling to understand this point. Why would an oversized heat p...
Ah, that's what I feared. Why did they have a clearly oversized heat pump installed? That sounds counterintuitive as more costly to run. But wha...
@derek-m 3-bed semi detached, about 100 square metres. The MCS document says something like "Room specific heat loss 40-60W/m2" which I have no idea w...
Latest Posts
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RE: Powerwall 3 or Myenergi or something else?
Many of those tariffs are simple time of use tariffs, w...
By Temperature_Gradient , 5 hours ago
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RE: Help me keep the faith with my air source heat pump installation
Yes thats the whole point of the flexis as regards tran...
By JamesPa , 6 hours ago
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So far as I can tell designing for DT5, which is 'the n...
By JamesPa , 6 hours ago
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Mitsu PAR-WT60R Wireless Controller - options
I hope I have satisfactorily installed the above wirele...
By DavidAlgarve , 8 hours ago
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WC curve best discovered by experiment anyway as any lo...
By JamesPa , 13 hours ago
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RE: Big Changes Coming to Our Heat Pump System
@editor your engineer's attitude is truly horrifying. ...
By GrahamF , 1 day ago
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RE: How to choose Towel Rails for an ASHP
@rob-nezard yes absolutely. Here is the link and a pho...
By GrahamF , 1 day ago
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@mixergy Thanks for the update, I would appreciate some...
By bontwoody , 1 day ago
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RE: Is Your Broadband Router the Weak Link in Your High-Tech Home?
Unfortunately I'm not that well connected 😂 ...
By Scalextrix , 2 days ago
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RE: A Customer's Lessons Learnt from a Heat Pump Installation in a Large House
It is interesting to see what our new Grant Aerona 290 ...
By GrahamF , 2 days ago
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RE: Testing new controls/monitoring for Midea Clone ASHP
I've never physically seen it, but I seem to recall som...
By cathodeRay , 2 days ago
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RE: Midea ASHP – how to set weather compensation
I noticed that too and thought the same thing, but then...
By cathodeRay , 2 days ago
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RE: Ya can’t win! It is S*d’s Law!
@old_scientist If IOF is still running next late spring...
By Toodles , 2 days ago
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RE: Electricity price predictions
Those of you on Agile will do well tomorrow; there are ...
By Toodles , 2 days ago
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RE: Who’s Caved and Switched the Heating On Already?
We've been running our Ecodan system, installed in June...
By Sheriff Fatman , 3 days ago
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Ok. Two schools of thought. The first is to run the ...
By JamesPa , 3 days ago
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@drei Willing as I am to help, I don't think I'm yet ...
By JamesPa , 3 days ago
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Selling 5 year old ASHP & Gas Combi Boiler - £590
Selling a 5-year-old Daikin Altherma Hybrid Air Source ...
By Paul G , 3 days ago
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RE: Is a Valliant Inline 6kW heater a BUS buster?
Much of that is true in principle, but its not likely t...
By JamesPa , 5 days ago
