How many cups of coffee a day to stop thermostat going to Eco mode?

Discussion in 'Electrics UK' started by ericmark, 22 Oct 2021.

  1. ericmark

    ericmark

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    OK know it sounds daft, but it seems walking past my wall thermostat it senses I am home so keeps house warm, and every time I make coffee I walk past it, I don't remember my Nest Gen 3 going into Eco mode last year, I thought if my phone was at home then it worked?

    But this year it has auto turned down while still in the house, has Google changed something?
     
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  3. JohnW2

    JohnW2

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    Hmmm. If one is going to utilise these new-fangled 'intelligent' systems to take control of one's house, I think one probably should wait until they become 'intelligent enough' to do things at least as well as a human could.

    In the meantime, I'm happy to retain essentially 'manual' control (albeit with the help of some time switches and thermostats) of what goes on in my house.

    I would be very interested to know what is the (financial {outlay and running} and environmental) cost of the vast number of these 'intelligent'/'smart' (or daft :) ) thingies that are being purchased!

    Kind Regards, John
     
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  4. ericmark

    ericmark

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    I have a feeling it is to do with Google taking over Nest?

    When I moved in I had a problem, in the Utility room there was a programmer, which said I could select DHW or CH+DHW but only two wires between it and the boiler so realised it could not do what it said, found a wire sticking out of wall in hall which connected to programmer, but no thermostat, down in the flat under the house where the boiler is, found a wireless thermostat receiver but nothing to connect to it, and a second thermostat which connected to boiler and one pump so it would heat flat, but to get main house warm needed to go down into flat and plug in second pump. Also three FCU's and a CU plus fuse box all connected to central heating, and even when pump not running radiators got warm, but not hot, and only some radiators.

    So my main problem was how to control the heating when only two wires, and also since it started as red, yellow, blue but ended as brown, black, grey would be better if extra low voltage as no idea where the cable was joined.

    I looked at Nest Gen 3 and two wires between wall thermostat and heat link would keep thermostat battery charged and also send data to heat link to control both CH and DHW so it seemed an easy way around the problem.

    I also added a couple of motorised valves so flat and main house independent from each other, and 9 electronic TRV heads, it was claimed 4 of these worked with Nest which was another reason to get Nest as already had the TRV heads from last house.

    The DHW is still a small problem, as no tank thermostat, but ½ hour every other day in Summer seems to work reasonable. And advised better for boiler which has no cool down system that thermo-syphon remains with no motorised valve for domestic hot water.

    Earlier this year lost connection with Phone and PC and it seems I was forced to migrate to Google from Nest. But prior to that been working well.

    It did work with GeoFencing, but to be frank, with an 18 kW boiler and a house with three floors only way to reheat fast is to select which radiators heat first, so simply times work better, 4 of the TRV head also can have GeoFencing, but again used simply timed changes. As to savings since never worked without Nest and programmable TRV heads can't say, more worried about comfort.

    I prefer it cool when sleeping, so switches down over night, then in the day it increases at 0.5°C every two hours which ensures there is hot water circulating for the TRV heads to control. Jumping direct to evening temperature it tended to over shoot.

    But as said worked OK last year, but this year seems to be auto changing to Eco Mode read that as cold room mode.
     
  5. JohnW2

    JohnW2

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    I think the issue is probabsly far wider and more general than that.

    Whilst we undoubtedly now have the technological ability to produce pretty 'intelligent' buildings, to achieve that in a really effective way is probably beyond the (practical and financial) realistic possibilities for most domestic dwellings - a situation which presumably will evolve and improve over the years and decades to come.

    Consider yourself. Quite apart from all you have spent on the various bits of technology, you seem to have also spent ('wasted'?) quite a lot of time playing with and 'investigating' the various systems and, indeed, spend ('waste'?) quite lot of time writing at length about them here (and maybe also elsewhere). There are therefore things other than financial (or even environmental) cost to consider, particularly given that 'life is short'.

    Kind Regards, John
     
  6. bernardgreen

    bernardgreen

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    control of the house or control of the people living in the house.........?
     
  7. ericmark

    ericmark

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    I know in hind sight Hive would have been better than Nest, but not going to swap now, I think likely there is a way to disable, but as yet don't know how.
     
  8. JohnW2

    JohnW2

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    Probably both.

    I have no problem (quite the contrary) with technological advances that assist me with achieving things that I (as a human being) want to achieve, but I certainly don't want systems which attempt to tell me what they think I want to achieve!

    Kind Regards, John
     
  9. SUNRAY

    SUNRAY

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    I could have written that!

    When I think of heating questions in this sub forum, the vast majority of them are based around these 'inteligent' systems and the associated problems...

    Questions about a simple timeclock and thermostat are uncommon.
    I feel I must say our installation of that ilk (including a mechanical time switch - by choice) has been fault less since we moved in in 1994 despite the boiler/pump/cylinder being replaced about 2010ish.

    And to add I've spent the last 15 years building/modifying control panels for heating/ventilation etc with electronic building management systems (BMS).
     
    Last edited: 22 Oct 2021
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  11. conny

    conny

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    We use a BMS in work and it is a pain in the ar5e! It covers things like heat control, heat recovery and Air Con systems. All rooms are set at 18* and the CO2 limit is at 600ppm for an air change. You can go in two adjacent rooms, both the same size, both with very similar equipment in them, both with no students in that day etc etc and the difference in temperature, CO2 is ridiculous. For example; 2 adjacent science labs have not been used for the past 3 days. Today the readings in one were 28.9C, 749ppm and next door was 22.1C and 440ppm So there were no extenuating circumstances to cause these to be so different. We have now isolated all systems from the BMS over the weekend to see what the readings will be on Monday. My money is on them being quite similar with no electronic interference.
    I jokingly suggested we go back to the old system of cast iron radiators, sash windows and a little man in the basement shovelling coal into a furnace. The college principal said they certainly seemed to have less problems in those days! :LOL::LOL:
     
  12. Harry Bloomfield

    Harry Bloomfield

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    Don't exclude the effect of solar heating - the sun streaming in through windows.
     
  13. conny

    conny

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    Unfortunately it hasn't been sunny this week but if it had they should have both received the same amount as they are side by side.
     
  14. JohnW2

    JohnW2

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    Quite - and not just 'heating questions', since 'lighting questions' are moving much into the same league!

    Kind Regards, John
     
  15. Vicario

    Vicario

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    I was sceptical about my new wireless thermostat as it is not easy to programme. Binding it to the control module is very fiddly too. But now we have got over those issues it is great. Combining this newish technology with common sense we have learnt to close the door of the living room when it is 'live' and by setting it a bit high we have a warm house and a stat that we can set to go off at 8.30 pm. It is usually off by then anyway. Same procedure in daytime means that the stat is only programmed to 'on' for a few hours in the morning. My point is that new developments in technology still require user intervention to make them truly useful. My heating engineer said that lots of his clients leave the stat on 'manual' all day and switch off at night or when the house gets too hot. The stat is too clever for them and they just want a switch!
     
  16. ericmark

    ericmark

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    As said the thermostat was fitted as being non wireless and able to be powered and control both CH and DHW with two wires. Nothing new really that is how ASii worked turn of the century.

    Yes I have a couple of spare PLC's and a HMI or two so could have done it all that way, but my thoughts was 70 now, I will reach a point when I can't repair them, don't want some thing a heating engineer can't repair.

    But it seems since fitting all I have been doing is disabling features, it started with the anti legionnaires where it wanted to ensure my DHW is hot enough once a week, how it thinks it can do this I don't know, I have no tank thermostat?
     
  17. Vicario

    Vicario

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    Eric...what stops your tank from reaching the temp of the boiler water?
     
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