Abstract: A monitoring system (10) for monitoring parameters of a fluid heater. The heater (30) comprises a storage vessel (32) for storing heated fluid therein. The monitoring system (10) includes a first sensor (12) and associated first electrical metering circuitry (14), a second sensor (16) and associated second electrical metering circuitry (18), and a control switch (22). The control switch (22) is operable so as to be able to adopt a first mode of operation in which the first electrical metering circuitry (14) is activated, and, a second mode of operation in which the second electrical metering circuitry is activated. The monitoring system (10) also includes a controller (24) for causing periodic operation of the control switch so that it switches between the first and second modes of operation.

Abstract: A controller for an electric booster element in a water heater is described. The electric booster element is powered from mains power and the controller comprises a control module and a capacitive module adapted to store power and supply stored power to the control module. The control module produces a control signal for controlling a relay to supply or restrict mains power supply to said booster element, said control signal depending at least in part on time of use data.

Abstract: A controller for an electric booster element in a water heater is described. The electric booster element is powered from mains power and the controller comprises a control module and a capacitive module adapted to store power and supply stored power to the control module. The control module produces a control signal for controlling a relay to supply or restrict mains power supply to said booster element, said control signal depending at least in part on time of use data.

Abstract: A water heater tank anode support and or locator device for an anode provided in a water heater tank, the support device having an anode engaging portion to engage said anode, and a tank engaging formation for operatively engaging a base of the tank.

Abstract: An electric water heater tank adapted for connection to a controller, the tank including one or more electrical heating elements temperature sensing means mounted on the exterior of the tank wall and adapted to obtain a measurement of the temperature of the water in the tank, the temperature sensing means and each heating element being connected to an externally accessible connection means. The tank can include one or more heating element control means each connected to a corresponding one of the heating elements. The element control means can be connected to the externally accessible connection means.

Abstract: A water heater tank anode support and or locator device for an anode provided in a water heater tank, the support device having an anode engaging portion to engage said anode, and a tank engaging formation for operatively engaging a base of the tank.

Abstract: A controller for an electric booster element in a water heater is described. The electric booster element is powered from mains power and the controller comprises a control module and a capacitive module adapted to store power and supply stored power to the control module. The control module produces a control signal for controlling a relay to supply or restrict mains power supply to said booster element, said control signal depending at least in part on time of use data.