More information on the furnace. Model and control part numbers would be a big help.
So we can point you to the C terminal on its end.
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First Time Install Insteon Remote Control Thermostat 2441TH
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Thank you for the reply. The picture is the thermostat I have installed now and the wiring. I do have the 2441TH not pictured. I am just not sure where to install the blue wire on my furnace side of the system?
Originally posted by SeanM View PostThis looks like a 2441ZTH which is the wireless companion to the 2441TH and would not have the proper connections for your HVAC system. You need to get the 2441TH before moving forward.
http://cache.insteon.com/documentation/2732-xx2-en.pdf
PG. 12 for wiring diagramLast edited by D-$; 02-14-2018, 01:35 PM.
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This looks like a 2441ZTH which is the wireless companion to the 2441TH and would not have the proper connections for your HVAC system. You need to get the 2441TH before moving forward.
http://cache.insteon.com/documentation/2732-xx2-en.pdf
PG. 12 for wiring diagram
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First Time Install Insteon Remote Control Thermostat 2441TH
If you are taking the time to read this thank you. I just recently bought a Insteon Remote Control Thermostat 2441TH. My current thermostat only has four wires however there is a blue unused wire on both ends. I am attaching pictures from the panel on both sides of the wire. What I am unsure about is which port would be the 24v common. I don't think I need the add a wire kit based on having the additional wire that is unused but I was hoping someone who knew more might help.
Thermostat:
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