From: burrynulnulfour@ppllaanneett.nnll   
      
   On 16.02.21 21:55, Olden wrote:   
   > Best to ask here or ?   
   >   
   > My gas furnace is a Holly.   
   > It has an old mercury two wire thermostat.   
   >   
   > I want to change the thermostat so that I can set the same two   
   > temperature ranges, day / night, for every day.   
   >   
   > I do not understand thermostats.   
   >   
   > The local store does not know how to advise me.   
   >   
   > Thermostat suggestions please and maybe a little tutorial.   
   >   
   It would be nice to know the open voltage and the switch current when   
   closed.   
   Around 24 volts any ordinary programmable thermostat unit might do.   
      
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