An air handler unit (AHU) in communication with a building automation system (BAS) or through direct programming of one or more smart valves within the AHU operates to meter an amount of water that flows through a coil in the AHU. In one embodiment, the BAS transmits a temperature setpoint signal to the smart valve and allows the smart valve to control its valve position without additional input from the BAS. In another embodiment, the AHU includes a master smart valve and a second valve. The BAS provides the temperature setpoint signal to the master smart valve, which in turn provides another temperature setpoint signal to the second valve. The second valve may take the form of a slave smart valve or a slave non-smart valve.

A local heating system is presented. The local heating system comprising: a first heat source (10) connectable to a heating grid (110) and arranged to extract heat from the heating grid (110); a second heat source (20) connectable to an electrical energy grid (120) and to transform electricity feed through the electrical energy grid (120) into heat; a heat emitting device (30); a distribution system (40) for circulating heat transfer fluid between the heat emitting device (30) and the first and second heat sources (10, 20); and a controller (50) configured to control the first and second heat source's (10, 20) relative outtake of heat from the heating grid (110) and the electrical energy grid (120), respectively.

A heating and hot-water supply apparatus performs a heating operation by heating a heating medium with a heater and circulating the heating medium through a heating terminal, a hot-water supply operation by circulating the common heating medium through a hot-water supply heat exchanger, heating service water through heat exchange with the heating medium, and supplying hot water, and a simultaneous operation of the heating operation and the hot-water supply operation, and controls a distribution ratio of the heating medium between the heating terminal and the hot-water supply heat exchanger. The apparatus determines whether the heating terminal proceeding in the heating operation is a suspendible terminal to suspend the heating operation or an unsuspendible terminal not to suspend the heating operation in response to a request for the hot-water supply operation.

Automated systems, methods, techniques, processes, products and product components are provided to implement an advanced and energy efficient hot water heating system control scheme that incorporates an advanced hot water reset for the boilers, including condensing boilers in hydronic systems. The advanced controls are provided to substantially enhance combustion (heating) efficiency for the boilers. The disclosed schemes replace conventional linear hot water reset with a device which can stand alone or integrate with boiler control technology or an existing building automation system to create a unique (non-linear) boiler reset curve based on various inputs. The schemes allow boiler control systems to learn and adapt over time maximizing the efficiency of a condensing boiler plant, by providing an independent, intelligent, economical, monitorable and manipulable solution eliminating the need of a head end BAS control system.

An air handler unit (AHU) in communication with a building automation system (BAS) or through direct programming of one or more smart valves within the AHU operates to meter an amount of water that flows through a coil in the AHU. In one embodiment, the BAS transmits a temperature setpoint signal to the smart valve and allows the smart valve to control its valve position without additional input from the BAS. In another embodiment, the AHU includes a master smart valve and a second valve. The BAS provides the temperature setpoint signal to the master smart valve, which in turn provides another temperature setpoint signal to the second valve. The second valve may take the form of a slave smart valve or a slave non-smart valve.

A heating system retrofitted to be operable through multiple heat stages at a constant fuel-air mixture includes a tube heat exchanger having a plurality of burners, a combustion air blower (CAB) having an exhaust vent connected with the plurality of burners, the CAB operable at a first speed and a second speed, a first valve connecting a fuel source to a first subset of the plurality of burners, and a second valve connecting a fuel source to a second subset of the plurality of burners.

The present disclosure provides a method for controlling a fan heater, including: sampling an indoor temperature at a preset interval (S100); comparing the sampled indoor temperature with a preset temperature to obtain a temperature control signal (S200); and adjusting a power of a heater and a rotate speed of a fan according to the temperature control signal (S300). The present disclosure further provides a fan heater, a device for controlling a fan heater, and a storage medium.

To curb deterioration of user convenience due to software update of a water warmer in a communication system between a management server and the water warmer through a relay device. A communication adaptor executes first communication for inquiring of the water warmer whether or not software update accompanying writing of an update program is capable of being started. The water warmer gives a notification for obtaining a user's consent to occurrence of an unavailable period of the water warmer due to the software update in response to the first communication, and executes second communication on the communication adaptor in a case in which the user's consent is obtained with respect to the notification. The communication adaptor transmits the update program received from a server to the water warmer in response to the second communication, and the water warmer executes the software update using the received update program.

A water heater including a tank having a wall with an external surface and an internal surface defining an interior, and a circuit board mounted to the external surface of the tank. The circuit board including a thermal path for conducting heat through the circuit board, where the thermal path of the circuit board is thermally coupled to the external surface of the tank. An electronic switch is mounted to the circuit board and electronically coupled to a heating element, where the electronic switch is thermally coupled to the thermal path of the circuit board so that heat generated by the electronic switch is transferred along the thermal path. A temperature sensor is thermally coupled to the circuit board to sense a temperature of the thermal path relating to a temperature of the electronic switch and relating to a temperature of water stored in the tank.

A water heater including a tank having a wall with an external surface and an internal surface defining an interior, and a circuit board mounted to the external surface of the tank. The circuit board including a thermal path for conducting heat through the circuit board, where the thermal path of the circuit board is thermally coupled to the external surface of the tank. An electronic switch is mounted to the circuit board and electronically coupled to a heating element, where the electronic switch is thermally coupled to the thermal path of the circuit board so that heat generated by the electronic switch is transferred along the thermal path. A temperature sensor is thermally coupled to the circuit board to sense a temperature of the thermal path relating to a temperature of the electronic switch and relating to a temperature of water stored in the tank.