Tag: Lennox 49M55

Lennox 49M55 Deluxe Programmable Thermostat IMPORTANT SAFETY INFORMATION WARNING: Always turn off power at the main power source by unscrewing fuse or switching circuit breaker to the off position before installing, removing, or cleaning this thermostat. Read all of the information in this manual before programming this thermostat. This is a 24V AC low-voltage thermostat.…