A heating, ventilation, and air conditioning system includes a plurality of sensors including a first sensor configured to measure an outside air temperature of outside air, a second sensor configured to measure a return air temperature of return air, and a third sensor configured to measure a mixed air temperature of mixed air. The system also includes a controller communicatively coupled to the plurality of sensors. The controller is configured to determine that data from one of the plurality of sensors is unavailable and estimate the data from the one of the plurality of sensors based on data from other sensors of the plurality of sensors.

A method of operating and controlling a grill includes the steps of activating a master control to connect a heat control system of the grill with an external source of energy, and determining whether an element or burner control is an “on” position. If the determination confirms that an element or burner control is in an “on” position, a visual indication is provided to identify the particular element or burner control that is in the “on” position. If the determination confirms that an element or burner control is in an “on” position, activation of an associated heating element or burner is prohibited.

The disclosed technology includes a controller for a cascade boiler system having both condensing and non-condensing boilers. The controller can receive supply water temperature data and return water temperature data to determine a current temperature differential in the system. The controller can determine a current load demand value using the current temperature differential and a set point temperature. If the current load demand value is less than or equal to a first load demand threshold, the controller can output a control signal for a condensing boiler to transition to a heating mode. If the current load demand value is greater than a second load demand threshold, the controller can output a control signal for a non-condensing boiler to transition to a heating mode.

There is provided a configuration installed on a mount provided with an opening, that includes a main body connected to the mount to penetrate the opening while providing a micro space; a first positioner attached to a side of a leading end portion of the main body with respect to the mount; and a second positioner attached to a side of a tail end portion of the main body with respect to the mount, wherein the main body is movable within a range determined by the micro space, the first positioner, and the second positioner.

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.

Apparatuses of an energy efficient water heater and methods for controlling the same are disclosed. In one embodiment, a water heater may include a water inlet configured to receive input water, an input water temperature sensor configured to detect a temperature of the input water, a user interface unit configured to receive an output water temperature setting selected by a user, a controller configured to determine a flow rate of an output water based on the input water temperature and the output water temperature setting, a heating unit configured to heat the input water to produce the output water, the controller is further configured to control the heating unit and a proportional flow restrictor to produce the flow rate of the output water, and a water outlet configured to transfer the output water at the flow rate of the output water.

The water heater may be configured to execute a normal operation in which a heating means is continuously operated in an ON state in a case where a required heat quantity is greater than or equal to a minimum heat quantity. The water heater may be configured to execute an intermittent operation in which the heating means is alternately and repeatedly operated in the ON state and an OFF state repeatedly in a case where the required heat quantity is less than the minimum heat quantity. The water heater may be configured to change a distribution ratio of a flow control mechanism in the normal operation and in the intermittent operation. An operating speed of the flow control mechanism in the intermittent operation may be faster than an operating speed of the flow control mechanism in the normal operation.

A control system for one or more ablutionary devices includes a mixer valve having a first inlet and a second inlet configured to receive a supply of hot and cold water, and an outlet configured to output cold water, hot water or a mixture thereof as an output stream for suppling water to the one or more ablutionary devices downstream of the mixer valve; and a controller in communication with the mixer valve. The controller is configured to obtain a supply coupling setting that indicates which of the first and second inlets is to receive, or is receiving, hot water during operation of the control system and which of the first and second inlets is to receive, or is receiving, cold water during operation of the control system; and control the mixer valve according to one or more target output water properties and the supply coupling setting.

The present invention relates to a method for determining a set of optimized control parameters (Θ.sub.k) of a closed-loop controller (3) or an open-loop controller for an HVACR (heating, ventilation, air conditioning and refrigeration) system (2). In a first method step, an outside temperature (T.sub.A), an actual room temperature (T.sub.R) of a room (9), a supply temperature (T.sub.VL), a predefined target room temperature (T.sub.R,W), and a predefined target supply temperature (T.sub.VL,W) are detected. From the detected measured values (T.sub.A, T.sub.R, T.sub.R,W, T.sub.VL, T.sub.VL,W) and a time (t.sub.k) of detection data packet (D.sub.k) is generated, which is transmitted via an internet connection to a server (8) where the data packet (D.sub.k) is stored in a storage medium (6, 7) connected to the server (8). In the next method step, a set of optimized control parameters (Θ.sub.k) is calculated on the basis of the measured values (T.sub.A, T.sub.R, T.sub.R,W, T.sub.VL, T.sub.VL,W) of the transmitted and stored data packet (D.sub.k) and on the basis of measured values (T.sub.A, T.sub.R, T.sub.R,W, T.sub.VL, T.sub.VL,W) of a plurality of further data packets (D.sub.0 . . . k) generated at an earlier time (t.sub.. . . k) of a specified period (Δt) and/or at least one of a plurality of previously determined sets of optimized control parameters (Θ.sub.k-1) by executing a calculation algorithm on the server (8). In the following method step, the calculated set of optimized control parameters (Θ.sub.k) is stored in the storage medium (6, 7) connected to the server (8) and is transmitted via the internet connection to the closed-loop controller (3) or the open-loop controller of the HVACR system (2) or to a user (B) of the HVACR system (2).

A heater control system is disclosed. In an embodiment, the heater control system includes a fluid heater that includes a heating element. The heating element controlled by a switch. The heater control system also includes a controller that can operate the switch. The controller is configured to determine whether a temperature associated with the fluid heater is below a predetermined temperature threshold. The controller causes the switch to transition to an operational state when the temperature is below the predetermined temperature threshold allowing current to flow through the at least one heating element.