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Last seen: Sep 19, 2024
I think that you will find that the 'soft' start for an electric induction motor is only over a period of seconds, to limit the current inrush. The ...
Just a note of caution. Correctly optimising the WC curve can literally take weeks to achieve dependent upon variations in weather conditions. Only ...
It is interesting to see how the compressor appears to go up to maximum speed when the actually LWT is quite low when compared to the target value, wh...
If I am understanding correctly, your WC curve is set to LWT of 35C @ OAT of -4C and LWT of 30C @ OAT of 20C. So at an OAT of 0C, the LWT should be in...
@cathoderay So on your particular system, when in setback mode, the whole system appears to be disabled, including the water pump or pumps. When cyc...
It may have been adequate a few days ago, when the OAT was higher, but now 35.5C could be inadequate. Your system cannot be operating in WC mode if ...
@cathoderay The data that you are providing is extremely useful, because it not only provides a better insight into how heat pump controllers appear...
If you run your heat pump on a fixed LWT, the IAT will likely vary with changes in OAT. Applying a 1C setback may have just made matters worse. If y...
That would be the case if the water pump keeps running for the whole compressor off period. I believe that some heat pump controllers can be set to ru...
I would suggest that you check the location of the temperature sensor on your hot water cylinder, since if it is fitted too high up the cylinder you m...
@jamespa Hi James, I would welcome your thoughts on the following. Calculating the thermal energy output from heat emitters is fairly straightfo...
@guthrie I know that some controllers can be removed from their main housing and relocated using a suitable extension cable, but I'm not certain if ...
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Degrees of Separation
Latest Posts
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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 , 2 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 , 22 hours 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 , 2 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 , 2 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...
By Mars , 4 days ago
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RE: Plug and play solar. Thoughts?
My thought is simple. Bring it on and bring on plug in...
By JamesPa , 4 days ago
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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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RE: Is the "divide by 2900" rule still valid?
Really flow rate is a pipework limitation not a water p...
By JamesPa , 6 days ago
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