I have seen some posts on this subject, but would just like to confirm some things. I want to be able to shut down my p35i around 10 at night, and then have it go on about 5 in the morning. It sounds simple enough to do this with a programable thermostat, by just cutting into the harmon external thermostat. This will put it into 4 blink mode, when the circuit is open, and regular mode when the circuit is closed. I want the stove to control everything just have the extra thermostat stop and start the stove. Just some reassurance from others that have done this, that it will not screw up my stove. It sounds innocent enough, just don't want to break anything. I love the stove, but would like it to be warm in the house when I get up in the morning. Any thoughts or suggestions would be appreciated... Thanks.