OAT and SRTN are for the Outdoor air temperature sensor. The Ecobee and Nest WiFI thermostats use weather stations so it's unnecessary. Not sure how the Honeywell uses that, probably the same way.
[QUOTE=Bilyclub;1859093]
Quote:
Originally Posted by EdFNJ
It seems that's because they basically install the "thermostat guts" at the blower unit and just "remote" the display box/temp sensor with 2-wires. The rest of the wires should be there in the wall unattached.
You need to bypass the control module and get rid of it. Then simply connect the Nest's Rh,Y1,W1,C,G connectors to the RYWCG terminals on the furnace.
Installing Nest thermostat - replacing Carrier Edge with Carrier Comfort 95 (compatible?) : Nest
Great! to make sure I understand. Do I remove the current wiring from the furnace, and take the wires that are currently plugged into the control module and plug them into the furnace?
level 2
AStuf
Nest Thermostat Generation 33 points ·
2 years ago
Correct. Remove the current wires between the control module and furnace. Then move the cable currently connecting the thermostat (old red/black) and use 5 of the wires to connect to the furnace. Keep the other cable with two wires (red/white) on Y and C connected as that feeds the outside a/c compressor.
level 3
n1876x
1 point ·
2 years ago
It looks like there are more than 7 wires in my edge, besides the jumper wire. |