Abstract: A sensor in a building HVAC system includes a transducer configured to measure a variable in the building HVAC system and to generate a sensor reading indicating a value of the measured variable. The sensor includes a communications interface configured to provide the sensor reading to a control device in the building HVAC system and a near field communication (NFC) circuit separate from the communications interface. The NFC circuit is configured to facilitate bidirectional NFC data communications between the sensor and a mobile device. The sensor includes a processing circuit having a processor and memory. The processing circuit is configured to wirelessly transmit data stored in the memory of the sensor to the mobile device via the NFC circuit, wirelessly receive data from the mobile device via the NFC circuit, and store the data received from the mobile device in the memory of the sensor.

Abstract: A heating, ventilation, and/or air conditioning (HVAC) packaged unit includes a first refrigerant circuit component configured to change a temperature or a pressure of a refrigerant flowing through the first refrigerant circuit component and a second refrigerant circuit component configured to change a temperature or a pressure of the refrigerant flowing through the second refrigerant circuit component. The first and the second refrigerant circuit components are within a common refrigerant circuit that is disposed within a common support structure. The HVAC packaged unit also includes an interconnection conduit having a length formed from aluminum, a first end segment coupled to a first end of the length, and a second end segment coupled to a second end of the length. The first end segment and the second end segment are each formed from copper, and the interconnection conduit extends between the first refrigerant circuit component and the second refrigerant circuit component.

Abstract: Embodiments of the present disclosure relate to a refrigeration system that includes a compressor configured to circulate refrigerant along a refrigerant loop, a motor configured to drive the compressor, and a variable speed drive coupled to the motor and configured to supply power to the motor. The variable speed drive includes a primary winding of a step down transformer coupled to an alternating current (AC) power source, a first secondary winding of the step down transformer, where the first secondary winding is configured to supply power at a variable supplied voltage to the motor when the motor operates below a threshold voltage, and a second secondary winding of the step down transformer, where the second secondary winding is configured to supply power at a fixed supplied voltage when the motor operates at or above the threshold voltage.

Abstract: An actuator in an HVAC system is provided. The actuator includes a motor and a drive device. The drive device is driven by the motor and coupled to an HVAC component for driving the HVAC component between multiple positions. The actuator further includes a processing circuit. The processing circuit is coupled to the motor and configured to transmit control signals to operate the motor to drive the HVAC component between a first position and a second position, monitor temperature data received from one or more temperature sensors, determine that the temperature data does not meet an expected performance criterion and transmit an alarm signal.

Abstract: A method for generating paths in a building space, the method including retrieving, by a processing circuit, a heatmap for the building space, generating, by the processing circuit, a plurality of vectors, the vectors defined by a first grid location and a second grid location of a plurality of grid locations, determining, by the processing circuit, a subset of vectors from the plurality of vectors based on a proximity of the plurality of vectors to a selected vector in the plurality of vectors, and combining, by the processing circuit, the subset of vectors to generate a merge location, wherein the merge location is used to adjust at least one of the first grid location or second grid location of at least one vector in the subset of vectors.

Abstract: The present disclosure relates to a centering system for a heating, ventilation, and/or air conditioning (HVAC) unit to be mounted to a curb. The centering system includes a centering wedge configured to couple to a base rail of the HVAC unit, the base rail having a lateral surface and a base surface along a length of the HVAC unit. The centering wedge includes an angled surface configured to extend between the lateral surface of the base rail and the base surface of the base rail. The angled surface is configured to contact the curb during installation of the HVAC unit to guide the HVAC unit toward a centered position on the curb.

Abstract: A tangible, non-transitory, machine-readable medium includes instructions that, when executed by a processor, cause the processor to determine an active operating condition of the heating, ventilation, and/or air conditioning (HVAC) system based on the active operating data related to the HVAC system, retrieve an existing service log having a maintenance procedure corresponding to the active operating condition of the HVAC system, and record an entry service log. The entry service log includes the active operating data, the active operating condition, and an updated version of the maintenance procedure corresponding to the active operating condition.

Abstract: A building management system (BMS) includes building equipment configured to provide raw data samples of one or more data points in the BMS. The BMS further includes a data collector configured to collect raw data samples from the building equipment and generate one or more raw data timeseries comprising a plurality of the raw data samples. The BMS also includes a timeseries processing engine. The timeseries processing engine is configured to identify one or more timeseries processing workflows that apply to the raw data timeseries, each of the workflows comprising a predefined sequence of timeseries processing operation. The timeseries processing engine is further configured to process the raw data timeseries using the identified timeseries processing workflows to generate one or more derived data timeseries. The BMS further includes a timeseries storage interface configured to store the raw data timeseries and the derived data timeseries in a timeseries database.

Abstract: A method of operating a chiller to avoid future surge events, the method comprises applying chiller operating data associated with a chiller as an input to one or more machine learning models; and generating a threshold for a controllable chiller variable to prevent a future chiller surge event from occurring based on an output of the one or more machine learning models, further comprising affecting operation of the chiller based on the threshold to prevent the future chiller surge event from occurring. The method enables automatic control of a chiller to avoid future chiller surge events.

Abstract: A building management system includes a processing circuit configured to clone the configuration of a first device to one or more devices in a network. The building management system may be configured to determine the source device and the one or more destination devices, retrieve the configuration data from the source device, determine a configuration of the second device, determine a mapping of the source device configuration to the destination device configuration, and send one or more commands to the destination devices to configure the destination devices with properties from the source device configuration. The cloning method may thus be used to clone devices remotely, where the devices can be from different vendors or be different models and located at different locations.

Abstract: A heating, ventilation, or air conditioning (HVAC) system for a building includes one or more processing circuits having one or more processors and one or more non-transitory computer-readable media containing program instructions. When executed by the one or more processors, the instructions cause the one or more processors to perform operations including providing an optimization function for operating HVAC equipment over a future time period including a plurality of time steps and using the optimization function to generate a time series of temperature setpoints for the plurality of time steps in the future time period. The time series of temperature setpoints achieve a target value of the optimization function over the future time period. The operations include operating the HVAC equipment to drive indoor air temperature toward a first temperature setpoint of the time series of temperature setpoints for a first time step of the plurality of time steps.

Abstract: A system for controlling heating, ventilation, and/or air conditioning equipment includes a thermostat unit configured control the HVAC equipment and operate in at least one of a first operational state or a second, power-saving state, and a server comprising one or more processors. The processors are configured to receive one or more messages indicating changes to parameters of the thermostat unit, store the one or more messages in a storage table, receive a query from the thermostat unit responsive to the thermostat unit transitioning to the second state, the query indicating parameters of the thermostat unit and a state of the thermostat unit, retrieve, responsive to the query, a first one of the one or more message from the storage table, generate a first message based on the first one of the one or more messages and the query, and transmit the first message to the thermostat unit.

Abstract: An enterprise management system includes a first subsystem located at a first geographic location and including a first building device, a second subsystem located at a second geographic location and including a second building device, and one or more memory devices having instructions stored thereon that, when executed by one or more processors, cause the one or more processors to perform operations including receiving first alarm data from the first subsystem, the first alarm data indicating an alarm condition for the first building device, receiving second alarm data from the second subsystem, the second alarm data indicating an alarm condition for the second building device, and providing aggregate alarm data on a user interface based on the first alarm data and the second alarm data, the aggregate alarm data indicating a total number of alarms for the system.

Abstract: A system for updating a device in a building management system (BMS). The system includes a third-party device and a device manager of a control network. The device manager updates the third-party device and includes a processing circuit that determines that the third-party device has been discovered on the control network. The processing circuit further populates a template with a set of received data from the third-party device and maps the third-party device with control network based on the populated template of received data. The processing circuit further configures the third-party device to operate in the control network, wherein configuring the third-party device comprises transforming a data exchange format of the third-party device.

Abstract: A building security system of a building including one or more memory devices configured to store instructions causing one or more processors to receive door lock data collected from one or more sensors for one or more doors within the building indicating operation of the one or more doors, select a period for which the door lock data was collected, select a first door from the one or more doors of the building for which data is collected, and identify segments of the data indicating activity of the door. The instructions also apply a model to segments of the data indicating activity of the first door, compute a probability metric for each segment of the data, compute a combined probability score for the first door based on the computed probability metrics, and classify the first door as normally functioning or malfunctioning by comparing the combined probability score to a threshold.

Abstract: A vehicle exhaust system includes an injector assembly having a cone positioned adjacent to an injector mount and which extends from an upstream inlet end to a downstream outlet end. Engine exhaust gas and injected spray enter the inlet end of the cone to mix with each other prior to exiting the cone via the outlet end. The cone has a narrowing body portion located downstream of the inlet end to accelerate flow during mixing. A vehicle exhaust component assembly comprising a mixer with the injector assembly and a method for injecting a fluid into an exhaust component using the injector assembly are also disclosed.

Abstract: An exhaust component assembly includes a housing defining an internal passage for engine exhaust gas, at least one exhaust gas aftertreatment component within the internal passage, and at least one heater to heat the engine exhaust gas. The heater comprises a helical-shaped element with a surface that spirals about an axis for a predetermined length.

Abstract: A panel assembly for a heating, ventilation, and/or air conditioning (HVAC) system includes a base panel having a sheet and a flange formed around a perimeter of the sheet, where the flange includes a plurality of openings, a stiffener bracket configured to couple to the flange and reinforce the base panel, and a liner panel configured to couple to the flange and reinforce the base panel, where the plurality of openings is configured to interchangeably couple to the stiffener bracket and the liner panel.

Abstract: A display device includes a front portion, a rear portion, a halo, and sides extending between the front portion and the rear portion. The front portion, the rear portion, and the sides form an enclosure. The halo includes a rim and an internal structure. The rim is positioned between the front portion and the rear portion. The internal structure is at least partially within the enclosure and includes a sweep portion and a receiving post. The receiving post and the sweep portion are configured to receive light emitted by one or more light emitting devices and at least one of guide, direct, diffuse, focus, and scatter light emitted by the one or more light emitting devices out of the display device.

Abstract: The present disclosure relates to a heating ventilation and air conditioning (HVAC) system. The system includes a primary heat transfer loop configured to be disposed at least partially outside of a building, and the primary heat transfer loop includes a heat exchanger, a compressor configured to compress a refrigerant, where the refrigerant is reactive, a condenser configured to receive and condense the refrigerant, and an expansion device configured to reduce a temperature of the refrigerant. The system further includes a secondary heat transfer loop configured to circulate a two-phase fluid at least partially inside the building, wherein the two-phase fluid is less reactive than the refrigerant.