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G/F-------------------- C/M------------------------ A/C

C-------------------------C--------------------EITHER WIRE FROM A/C
Y--------------------------Y-------------------EITHER WIRE FROM A/C

hum1 to
r right above it
hum2 to solenoid valve
C also to other side
of solenoid valve

out1 and out2
to outdoor sensor

Preferably it would be hooked up differently using a 20va transformer to provide power for the hum. this would ensure that you were not robbing power from the furnace which on some furnaces has caused problems

I have this stat and install this stat all the time, I LOVE IT!!!!

let me know if you need help with the setup functions
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