Thanks in advance for your help.
I have an old mechanical thermostat that I'd like to replace with a programmable CM907.
My current thermostat has three wires. These are terminals 1) Red wire. 3) Yellow wire and 4) Blue wire. I attach the accompanying diagram.
The CM907 only requires two wires. I understand the neutral wire should be capped off. Can you confirm, from the wiring diagram, which wire is neutral, and should be capped off, and which I should connect to my CM907, and where?
CM907 diagram:
Thanks.
I have an old mechanical thermostat that I'd like to replace with a programmable CM907.
My current thermostat has three wires. These are terminals 1) Red wire. 3) Yellow wire and 4) Blue wire. I attach the accompanying diagram.
![209000_208134_66213_45230347_thumb.jpg](http://media.diynot.com/209000_208134_66213_45230347_thumb.jpg)
The CM907 only requires two wires. I understand the neutral wire should be capped off. Can you confirm, from the wiring diagram, which wire is neutral, and should be capped off, and which I should connect to my CM907, and where?
CM907 diagram:
![209000_208134_66215_63261787_thumb.jpg](http://media.diynot.com/209000_208134_66215_63261787_thumb.jpg)
Thanks.