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Title: Great thermostat--lousy installation directions
Review: I installed this thermostat to control a gas furnace, following the wiring instructions. The instructions said to remove the jumper wire in the connection terminal if you had a two-wire control circuit. I did as instructed; the furnace came on but would not quit. After I played with the unit for several hours, my wife checked the Honeywell website, and finally found that the instructions there said that the jumper was mandatory for proper operation if you had a single transformer and a two wire system. I put the jumper back on and the thermostat has worked flawlessly since. The thermostat works really well, but the directions stink.
