Totaline p274-1200 installation

[fordnbudman]

I'm trying to upgrade to programmable t-stat. I read the other forum reguarding the same unit, however it still wouldn't power up. Need info on wiring connections. only four wire set up at present tstat, with the red jumping from R to 4
any help would be awesome!


Thanks
Charlie

[TECH X]

Battery-less operation with 72 hour clock backup and a "NeverlostTM" program

You need a 5th wire.  It will go from the C terminal on the stat, to the C terminal at the furnace.