FAN COIL THERMOSTAT WITH ACTIVITY SENSING

摘要

Fan coil thermostats can provide energy savings by, for example, not unnecessarily heating and/or cooling an unoccupied room or other space. Fan coil systems employing such a fan coil thermostat may be more energy efficient. A fan coil system may include a fan coil that is configured for fluid communication with a source of heated fluid and/or a source of cooled fluid, a valve that controls fluid flow through the fan coil, a fan that blows air across the fan coil and a fan coil thermostat. The fan coil thermostat may include a controller that implements a control algorithm that may include an unoccupied temperature setting. The controller may be programmed to permit a user to enter a user-chosen temperature setting. In response, the controller may initiate a timer, and may automatically return to the unoccupied temperature setting once the timer has expired.

主权项

1. A fan coil thermostat for use with a fan coil system, the fan coil thermostat comprising:
a controller without a programmable schedule, the controller implementing a control algorithm that is configured to at least partially control one or more components of the fan coil system, the control algorithm defaults to controlling to an unoccupied temperature setting; a timer controlled by the controller; a user interface comprising one or more temperature adjustment buttons for increasing or decreasing a user-chosen temperature setting, the user interface configured to provide a signal to the controller when one or more of the one or more temperature adjustment buttons are operated by a user, the signal providing the controller with the user-chosen temperature setting and also providing the controller with an indication of current occupancy; and wherein, in response to the indication of current occupancy, the controller temporarily controls to the user-chosen temperature setting rather than the unoccupied temperature setting and initiates the timer, the controller returning to controlling to the unoccupied temperature setting once the timer expires.