2 stats 1 furnace........


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Old 10-16-11, 08:25 PM
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Unhappy 2 stats 1 furnace........

late to the party, but can someone please give an example of how to wire two tstats in series? I have one programmable and one manual one I'd like to add, but if I need to get rid of programmable that's no problem.

thanks
 
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Old 10-16-11, 09:13 PM
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this can not be done.....................Both stats would have to be calling for heat in order for the furnace to run.
 
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Old 10-16-11, 10:45 PM
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According to the other posts - it can be done. You are correct that both would have to be calling for heat, but that condition can exist. I'm looking for the series wiring help.

thanks!
 
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Old 10-16-11, 11:08 PM
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What are you trying to accomplish?
 
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Old 10-17-11, 05:11 AM
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strange, I tried to hit reply to this thread: http://www.doityourself.com/forum/ga...1-furnace.html

but somehow it created a new thread. Sorry for the missing info, this is what I want to do:

"you wire the two t-stats in series with one another should achieve what you are looking to do. Since a t-stat is nothing more than a switch that completes a circuit, (sending 24 volts back to the board) both t-stats will need to be calling for heat for the furnace to run. If one is set for 75 and the other only 70, 70 it is."

I'm just looking for the series help.

thanks
 
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Old 10-17-11, 03:17 PM
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From Furnace R to thermostat #1 R. From thermostat #1 W to thermostat #2 R. From thermostat #2 W to Furnace W
 
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Old 10-17-11, 04:16 PM
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I still want to know what you are trying to accomplish. Wiring two thermostats in series will NOT necessarily give control to the lower set thermostat such that the temperature in the area of the higher set thermostat will follow the lower set thermostat.
 
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Old 10-17-11, 06:49 PM
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agreed Furd, but he asked and with no questions I answered, let him figure it out from there. I already told him it would not work properly, but he didn't want to listen.
 
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Old 10-18-11, 05:19 AM
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thx guys! Works great Nice temporary stop measure until I can zone it next year.
 
 

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