Tag: S1-THEU21P7S

Source1 S1-THEU21P7S Programmable Thermostat  INSTRUCTION Turn off the power to the Heating/Air Conditioning system at the main fuse panel. Most residential systems have a separate breaker for disconnecting power to the furnace. Remove the cover of the old thermostat and loosen the screws holding the thermostat base or subbase to the wall to lift away.…

Source1 S1-THEU21P7S Programable Thermostat  Instruction Turn off the power to the Heating/Air Conditioning system at the main fuse panel. Most residential systems have a separate breaker for disconnecting power to the furnace. Remove the cover of the old thermostat and loosen the screws holding the thermostat base or subbase to the wall to lift away.…