Abstract: A wall plate for a wall thermostat blocks intrusion air from the thermostat. The wall plate has a wire passage aligned with the wall penetration through which the thermostat wires emerge. The wall plate member directs any intrusion air that flows out the penetration away from the cavity of said thermostat. An insulating layer, e.g., a closed-cell foam sheet, in the wall plate insulates the thermostat from direct thermal contact with the wall. The closed-cell material closes around the thermostat wires. Bosses or feet on the thermostat back plate create a standoff between the wall plate and the thermostat.

Abstract: A programmable thermostat can be programmed and configured using a set up selector keys or pushbuttons to enter set up modes and to move from screen to screen on the thermostat display, and using up and down selector keys to change the time and temperature settings within each screen or mode. The thermostat can be set into a master mode be depressing two of the selector keys simultaneously, and then the programmed settings of the thermostat can be electronically transferred to each of a batch of similar thermostats using a thermostat conductor in a multi-conductor thermostat wire such as the fan conductor. The thermostat can be toggled back to a normal or target mode for thermostat operation.

Abstract: A plug or grommet fits into the opening in the back plate of a thermostat and blocks or diverts intrusion air from entering the interior of the thermostat housing from the wall penetration for the thermostat wires. The thermostat wires are fed through the grommet, which is a soft rubbery material that closes over the wires and blocks the intrusion air. Alternatively, a wall plate can be used between the back plate of the thermostat and the wall where the thermostat is mounted.

Abstract: A plug or grommet fits into the opening in the back plate of a thermostat and blocks or diverts intrusion air from entering the interior of the thermostat housing from the wall penetration for the thermostat wires. The thermostat wires are fed through the grommet, which is a soft rubbery material that closes over the wires and blocks the intrusion air. Alternatively, a wall plate can be used between the back plate of the thermostat and the wall where the thermostat is mounted.