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Last seen: Sep 19, 2024
The values you calculated are the quantity of thermal energy that the heat emitters can supply to the rooms. To keep the IAT reasonably constant, it i...
Hi Chillybot, welcome to the forum. Don't despair, there are quite a number of very helpful people on the forum, who will hopefully guide you throug...
I have attached a radiator output calculator in a spreadsheet. The yellow highlighted cells are the ones that can be varied. If you know the flow an...
Sorry I should have made it clear. Most forum members now use the abbreviation IAT to denote Indoor Air Temperature. Bet you can't guess what OAT mean...
Yes, many of us prefer the IAT slightly warmer. One of the pleasures of growing older. 🙄 Of course increasing the IAT, increases the heat loss, whi...
What happened to the IAT when you raised the WC curve?
It is possibly electrical interference on the cable rather than affecting the thermistor. The controller will be measuring the OAT by passing an elect...
@walkers-heatpump I can't remember how many industrial control systems I have fine tuned over my 50+ years career, but when possible the first thing...
One thing that I would suggest is that you switch off AA mode for a while and optimise the WC curve, since my understanding is that in AA mode the con...
@fazel Thanks fazel, much appreciated. I suspect that the training manual is for industrial type units, since the smallest compressor of a twin co...
@ggw In addition to the suggestions by AllyFish, another reason could be electrical pickup from a nearby power cable, that is only live when the hea...
Welcome to the forum and thank you for the detailed report. I must admit that I was not aware of the Compressor On Guard Strategy, which I don't belie...
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Degrees of Separation
Latest Posts
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RE: Switch suitable to change between two inverter CT's
It depends An unloaded current transformer can output...
By bobflux , 45 minutes ago
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
@batpred They offered both, I went with Pro. As an amat...
By baroquebank , 12 hours ago
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RE: To re-pipe or not to re-pipe? Moving from oil boiler to air source heat pump.
@penval, really useful update. After all the discussion...
By Mars , 1 day ago
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RE: Who's your electricity provider and what's your tariff?
@papahuhu I prefer to look at it simplistically. We d...
By Old_Scientist , 2 days ago
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RE: How Accurate Is My DIY Heat Loss Calculation?
D'oh - of course. I shouldn't post before my brain is f...
By Old_Scientist , 2 days ago
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RE: Questions about A2A for heating as well as cooling
@rob-of-york I would concur with the underfloor insulat...
By Toodles , 2 days ago
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RE: New Vaillant Arotherm controls link to existing thermostats ; wired vs wireless
Nothing attached! I have rads but UFH makes the case ...
By JamesPa , 3 days ago
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RE: Cooling with air to water heat pumps
Passive cooling should always be the first call. Keep ...
By JamesPa , 3 days ago
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RE: Do I add Air Con or MVHR to existing A2W ASHP?
@rob-of-york Thank you, I’m thinking along these same l...
By Toodles , 3 days ago
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@Mars Good questions! The downstairs unit did the maj...
By Rob of York , 3 days ago
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?
@dave, I think @jamespa has probably identified the mos...
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RE: Plug and play solar. Thoughts?
My thought is simple. Bring it on and bring on plug in...
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RE: Heat Geek mini store vs pump size
Yes I agree, that’s why Heat Geek have most likely sele...
By Tomtheheatingengineer , 5 days ago
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@tomtheheatingengineer, thank you, and welcome to the f...
By Mars , 5 days ago
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