Progammable 220V thermostat battery backup

dougstove Posted By dougstove, Oct 13, 2012 at 9:23 PM

  1. dougstove

    dougstove
    Feeling the Heat 2.
    NULL
    

    Aug 7, 2009
    322
    37
    Loc:
    New Brunswick, Canada
    Hello;
    My father-in-law has a winterized cottage with electric back up heat.
    The area suffers frequent power outages and his progammable thermostat loses track of time.

    Does anyone have a lead on a progammable 220V thermostat with battery backup?
    When his current thermostat loses time, it throws off his use of off-peak low price power.
    cheers, Doug
     
  2. raybonz

    raybonz
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    Feb 5, 2008
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    http://www.amazon.com/Intermatic-ET8015C-Electronic-Astronomic-Switch/dp/B0039QB182 tie output from T-stat through battery back-up time switch..

    Ray
     
  3. Highbeam

    Highbeam
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    Dec 28, 2006
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    Since they got rid of the mercury swtiches, all of the line voltage stats are now battery powered. Just go to the hardware store and buy one. I put programmable, battery powered, 220 volt stats in each of the bedrooms. Nothing special anymore.
     
  4. dougstove

    dougstove
    Feeling the Heat 2.
    NULL
    

    Aug 7, 2009
    322
    37
    Loc:
    New Brunswick, Canada
    Thanks.
    Highbeam: Do you know of any manufacturers? My father-in-law specifically contacted Honeywell, and they do not make units with battery backup.
    cheers, Doug
     
  5. Highbeam

    Highbeam
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    Dec 28, 2006
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    I'll have to look at the stat when I get home. They aren't battery backup anymore, they use a battery to provide power to the unit and to switch the line voltage on and off. You probably confused Honeywell with the battery backup thing.
     
  6. Highbeam

    Highbeam
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    Dec 28, 2006
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  7. raybonz

    raybonz
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    Feb 5, 2008
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    That's a nice t-stat! Not much more than a regular set-back t-stat but each room you will use will need one..According to the specs there is no battery in those T-stats so no back up. I wasn't aware they made those!

    Ray
     
  8. Highbeam

    Highbeam
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    Dec 28, 2006
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    That's weird, it stores the programming indefinitely even in a power outage and without a battery. Weird. I would expect most of these to have batteries.
     
  9. raybonz

    raybonz
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    Feb 5, 2008
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    Quoted from manual:
    "Data backup: In the event of a power outage, most settings are saved. Only the
    time must be re-adjusted if the power outage lasts more than 2 hours. The thermo-
    stat will return to the mode that was active prior to the power outage."

    Link to manual here:
    http://tinyurl.com/9q9qcs7

    Ray
     
  10. woodgeek

    woodgeek
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    non volatile memory and a super cap for the clock.
     

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