Abstract: The present disclosure includes a control board including a switchable input/output port. The switchable I/O port may provide a switchable communication bus capable of selectively supporting one of multiple different communication protocols and may provide a switchable power bus capable of selectively conducting electrical power from one of multiple different power supplies. As such, the control board may communicatively and/or electrically couple to a wide range of devices. To that end, the control board may support the dynamic interchange and reconfiguration of devices coupled to the control board, allowing a control system including the control board greater operational flexibility.

Abstract: An outdoor unit for a building HVAC system includes one or more sensors configured to measure temperature and pressure values. The unit also includes a user interface coupled to the outdoor unit. The user interface is configured to display information to a user. The unit includes a controller including a processing circuit. The processing circuit configured to record the temperature values and the pressure values via the sensors and cause the user interface to display temperature values and pressure values.

Abstract: The present disclosure presents techniques for improving operational efficiency of climate control systems. A climate control system may include climate control equipment, a sensor that measures temperature in a building, and a control system that controls operation of the equipment using a first temperature schedule, which associates each time step with a temperature setpoint, when the building is occupied.

Abstract: The present disclosure relates to a zoning system for climate control including a controller configured to operate the zoning system to supply conditioned air to a first zone of a plurality of zones through a first supply air damper to thermally charge the first zone. The controller is also configured to close the first supply air damper of the first zone and open a second supply air damper of a second zone of the plurality of zones after the first zone is thermally charged. The controller is further configured to operate the zoning system to draw the conditioned air from the first zone and supply the conditioned air to the second zone through the second supply air damper.

Abstract: A control system for an HVAC system. The control system includes a user interface configured to present information to a user and receive inputs from the user. A processor is configured to cause the processor to receive one or more system parameters associated with HVAC system components. The processor is further configured to determine if a maintenance operation is required in response to receiving the one or more system parameters, and to display to the user via the user interface an indication that a maintenance operation is required. The processor is also configured to receive an instruction from the user to initiate the maintenance operation, and to display one or more operational conditions required to be satisfied prior to the maintenance operations being performed. The HVAC components are monitored to determine if the operational conditions are completed, and maintenance instructions are displayed in response to the operational conditions being completed.

Abstract: Systems and methods to control an electronic expansion valve (EEV) of a vapor compression system are described. A heating ventilation, and air conditioning (HVAC) system includes control circuitry having a sensor. The control circuitry sets a control setpoint of a vapor compression system such that an electronic expansion valve operates across a first operating range. The control circuitry receives a signal from the sensor indicative of an operating condition of the vapor compression system. The control circuitry adjusts the control setpoint based at least in part on the operating condition. The control circuitry controls operation of the electronic expansion valve based at least in part on the adjusted control setpoint, wherein the electronic expansion valve operates across a second operating range, different from the first operating range, at the adjusted control setpoint.

Abstract: A thermostat for a building space includes an electronic display, a frame, a touch sensitive interface, and a processing circuit. The touch-sensitive interface has a first portion that overlays the electronic display and a second portion that overlays the frame. The touch-sensitive interface is configured to receive touch-based input via both the first portion and the second portion. The processing circuit is configured to define one or more locations within the second portion that correspond to touch-sensitive buttons. The locations of the touch-sensitive buttons are customizable and can be changed by a user. The thermostat further including at least one of a sticker and a skin that covers at least part of the second portion and visually marks the locations of the touch-sensitive buttons.

Abstract: A heat exchanger assembly includes a first heat exchanger plate and a second heat exchanger plate each include an outer boundary edge. The heat exchanger assembly also includes a service plate configured to be coupled to the outer boundary edge of each of the first and second heat exchanger plates. The service plate includes multiple sections coupled together to form a single plate, wherein each section of the multiple sections is configured to be individually removed to provide access to a space between the first and second exchanger plates.

Abstract: The present disclosure describes techniques concerning a fan assembly. The fan assembly may include a fan, having multiple blades to rotate about an axis, and a housing in which the fan is disposed. Additionally, the fan assembly may include an air inlet formed in a wall of the housing that is transverse to the axis. The air inlet may define an orifice and includes multiple air guides that each extend into the housing from a perimeter of the air inlet.

Abstract: The present disclosure relates to a heating, ventilation, and/or air conditioning (HVAC) system including a thermal light detector configured to detect a heat indication within a conditioned space. The HVAC system further includes a controller configured to receive feedback indicative of the heat indication from the thermal light detector and, based on the feedback, correlate the heat indication with a categorized event of a plurality of categorized events. The controller is further configured to adjust operation of the HVAC system based on the categorized event.

Abstract: A heating, ventilation, and air conditioning (HVAC) system may include a HVAC unit that may control air flow, a first control system that may directly control operation of equipment in the HVAC unit, and a second control system communicatively coupled to the first control system. The second control system may be located in a different zone of a building as compared to the first control system, such that the second control system may receive a request to adjust the air flow output by the HVAC unit and send a command to the first control system based on the request. The command may cause the first control system to adjust the operation of the equipment in the HVAC unit to cause the air flow output by the HVAC unit to be adjusted according to the request.

Abstract: In an embodiment of the present disclosure, a control system for a heating, ventilation, and/or air conditioning (HVAC) system includes a user interface configured to display a zone management screen having a first selectable representation of a first zone of the HVAC system including a first temperature set point and a first operating mode of the first zone, and a second selectable representation of a second zone of the HVAC system having a second temperature set point and a second operating mode of the second zone. The control system further includes a controller configured to receive a first input via the zone management screen to adjust the first temperature set point or to adjust the second temperature set point, and receive a second input via the zone management screen to adjust the first operating mode or to adjust the second operating mode.

Abstract: The present disclosure is directed to a system for a heating, ventilating, and air conditioning (HVAC) system includes a control system of the HVAC system, a user device configured to be communicatively coupled to the control system and receive feedback indicative of a lock out event of the HVAC system, where the lock out event is configured to effectuate at least a partial shutdown of the HVAC system, and a dealer device configured to receive authorization from the user device to remotely clear the lock out event of the HVAC system, where the dealer device is configured to remotely clear the lock out event upon receiving the authorization from the user device.

Abstract: The present disclosure includes a heating, ventilation, and air conditioning (HVAC) system having a control system suitable to control operation of a device in the HVAC system. The control system may include a zone control panel that may control operation of the device using power-line communication. Accordingly, the zone control panel and the device may be both communicatively and electrically coupled via one or more power lines. To that end, the zone control panel may determine a primary address identifying the device and/or a secondary address indicating the one or more power lines electrically coupled to the device. Further, the zone control panel may communicate with and/or coordinate operation of the device by transmitting data messages to the device via the one or more power lines based on the primary address and/or the secondary address.

Abstract: The present disclosure relates to a heating, ventilation, and/or air conditioning (HVAC) system including a controller configured to detect a presence of an occupant in a zone of a plurality of zones. The controller is also configured to determine a priority level of the occupant and control operation of the HVAC system to prioritize supply of conditioned air to the zone of the plurality of zones over remaining zones of the plurality of zones based on the priority level of the occupant.

Abstract: The present disclosure relates to a zoning system for climate control including a controller configured to operate the zoning system to supply conditioned air to a first zone of a plurality of zones through a first supply air damper to thermally charge the first zone. The controller is also configured to close the first supply air damper of the first zone and open a second supply air damper of a second zone of the plurality of zones after the first zone is thermally charged. The controller is further configured to operate the zoning system to draw the conditioned air from the first zone and supply the conditioned air to the second zone through the second supply air damper.

Abstract: An HVAC system includes, an electronic expansion valve (EEV), and a controller in communication with the EEV. The controller determines a minimum EEV setpoint position value based on a comparison of a superheat error value to a setpoint error threshold. The controller determines a maximum EEV setpoint position value based on a comparison of a second superheat error value to a second setpoint error threshold. The controller calculates an average setpoint value based on the maximum EEV setpoint position value and the minimum EEV setpoint position value. The controller configures the EEV to a position corresponding to the average setpoint value and operate the EEV for a predetermined amount of time. The controller operates the EEV according to a PID algorithm.

Abstract: In one embodiment of the present disclosure, a heating, ventilating, and air conditioning (HVAC) system includes a refrigerant circuit configured to flow a refrigerant. The refrigerant circuit includes a compressor configured to compress the refrigerant, a condenser configured to receive the refrigerant from the compressor and to condense the refrigerant, a valve configured to receive a first portion of the refrigerant from the condenser and to decrease a pressure of the first portion of the refrigerant, and an evaporator configured to receive the first portion of the refrigerant from the condenser and configured to evaporate the first portion of the refrigerant. The refrigerant circuit also includes a refrigerant sub-circuit configured to receive a second portion of the refrigerant from the condenser and to convert thermal energy of the second portion of the refrigerant to electrical energy.

Abstract: A thermostat for a building space includes a communications interface, an electronic display, and a processing circuit. The communications interface is configured to receive service provider information via a network connection. The electronic display includes a user interface configured to display the service provider information. The processing circuit is configured to determine when to display the service provider information on the electronic display by monitoring thermostat events.

Abstract: A system for heating a building via refrigerant includes a coil temperature sensor, an ambient temperature sensor, and a controller. The controller includes a processing circuit configured to record a system operating parameter and a control step of a control process before performing a sacrificial defrost cycle. The processing circuit is configured to cause the system to perform the sacrificial defrost cycle and operate the system at predefined system operating parameters other than the recorded system operating parameters. The system is configured to cause the system to operate at the recorded system operating parameters and generate calibration data in response to the sacrificial defrost cycle ending. The processing circuit is configured to cause the control process to operate at the recorded control step and cause the system to perform a defrost cycle based on the calibration data, the coil temperature, and the ambient temperature.