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Last seen: Sep 19, 2024
I think that a defrost is likely to cause an increase in reading from the OAT sensor, because not only is hot refrigerant gas being pushed through the...
@iancalderbank A sensor should not suffer from 'wind chill', since it is not a heat source.
@cathoderay One of the problems with correctly analysing the data from your system is that we don't know the true OAT. I think that most correctly...
If you remove the insulation from around the flow rate indicator, you should be able to see details of the make and model. Google these details and se...
Based upon the available information, I would say your assessment looks to be correct. One thing that I learned many years ago is that people can ma...
As CR has stated, those are indeed defrost cycles, though I suspect they are being exacerbated by the two major problems from which his system suffers...
It is always good to see charts from correctly operating heat pump systems.
If my understanding is correct, it may be the temperature to which the refrigerant gas falls within the evaporator before the build-up of ice is suffi...
What is the actual temperature at the radiators and what is the temperature drop across the PHE?
@scrchngwsl If you wish I will post a copy after I have updated for the OHS capability.
Has the controller been correctly optimised?
@scrchngwsl Well done. It looks like you are getting there. If I am understanding your formulas correctly, they should produce somewhat similar re...
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Degrees of Separation
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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 , 13 hours ago
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RE: To re-pipe or not to re-pipe? Moving from oil boiler to air source heat pump.
Sooooo, what did we do in the end? We approached three ...
By Penval , 13 hours 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...
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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 , 20 hours 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 , 20 hours ago
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RE: Cooling with air to water heat pumps
Passive cooling should always be the first call. Keep ...
By JamesPa , 21 hours 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 , 2 days ago
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@Mars Good questions! The downstairs unit did the maj...
By Rob of York , 2 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 , 3 days ago
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@tomtheheatingengineer, thank you, and welcome to the f...
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
@majordennisbloodnok @tomtheheatingengineer For my ...
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RE: Is the "divide by 2900" rule still valid?
Really flow rate is a pipework limitation not a water p...
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