Original message
| aussie78
 |  "powering thermostat"
, posted Tue 11 Nov 12:58  
Hi everyone, i recently purchased and installed a Globe 59005 programmable thermostat. Everything works great, except one thing bothers me - i need to run it off batteries. It has the option of 24v powering but my old thermostat (the round mercury type) didnt have power to it.
When I installed the new thermostat i also removed a humidifier control box next to it (the humidifier has long since been removed also). my question is can i use the two wires to my advantage and power my thermostat with it?
i followed the diagram in the install manual and hooked up these wires:
OB/W2 ----> nothing
R ----> red
W1 ----> white
C ----> nothing
G ----> green
Y ----> yellow
I'm guessing that i can just hook up the common (c) to one of the old humidifier wires and consequently hook that wire to the common on the furnaces transformer. Am I correct in assuming this or am i going to blow my transformer or thermostat? I did check the common and 24v lines off the transformer and showed just over 28v if i remember right.
The problem is like i stated - i dont want to run this off batteries alone because when i replace them i'll need to totally reprogram the thermostat (not a huge problem, but an unneeded inconvenience).
Any help would be greatly appreciated,
thank you
Aussie
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Replies:
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| wingnut_2u
| "Re(1):powering thermostat" , posted Tue 11 Nov 17:35
yes.
Make sure you have a direct C ---> C connection with the wire.
Masters Heating & Cooling
Caldwell/Boise Idaho
Always call a certified HVAC Professional when you are unsure on how to do it yourself.
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