A heat trap apparatus for a water heater is provided. The heat trap apparatus includes a tubular body, a liner disposed within the tubular body, and a heat trap baffle assembly having a tubular housing coaxially disposed within the liner. The liner includes a projection to engage with an inner surface of the tubular body at a first end using an interference fit. The tubular housing includes a first diametric portion to engage with the inner surface of the tubular body at a second end using an interference fit, a second diametric portion extending from the first diametric portion and to engage with an inner surface of the liner using an interference fit, and a third diametric portion extending from the second diametric portion and to movably support one or more heat trap inserts to inhibit convective fluid flow therethrough.

A magnetite level monitoring device for a magnetic filter in a central heating system, the magnetic filter including a separation chamber, an inlet to the chamber and an outlet from the chamber, and a magnetic element disposed within the chamber for attracting magnetic particles and removing the magnetic particles from the system water as it flows through the chamber, and the monitoring device including: a housing for placing adjacent to the outside of the separation chamber; a magnetometer mounted to the housing; a magnetic field guide mounted to the housing, the magnetic field guide being disposed between the magnetometer and the outside of the separation chamber, when the housing is mounted to the separation chamber; and output means adapted to issue a notification when the output from the magnetometer exceeds a predetermined threshold.

Apparatus and method of heating and ventilating an enclosed area comprising a floor arranged as a number of floor zones. The method comprises providing a radiant heater spaced above each floor zone so as in use to direct heat downwards towards the floor; providing a ventilating air inlet spaced above at least part of each floor zone, the air inlet being at the same level as, or closer to, the floor than the radiant heater, the air inlet being arranged in use to draw-in a controllable quantity of air from outside of the enclosed area; providing a ventilating air outlet spaced above at least part of each floor zone, the air outlet being spaced further from the floor than the radiant heater and air inlet, the air outlet being arranged in use to extract a controllable quantity of air from inside of the enclosed area, wherein the method further comprises, for each floor zone, independently controlling the quantity of air being drawn in and extracted from said floor zone based on the sensed temperature inside and outside the enclosed space.

A testing device (10) for testing the level of a selected chemical in central heating system water in a central heating system circuit comprises: a sample chamber (14) for holding a sample of central heating system water to be tested, the sample chamber (14) being connectable (12) to the central heating system circuit to allow fluid to pass between the central heating system circuit and the sample chamber (14); means (16) for controlling filling of the sample chamber (14) with central heating system water from the central heating system circuit, and emptying of the sample chamber (14); at least one valve (18) for isolating the sample of central heating system water from the heating circuit during testing; and optical testing apparatus including a light source (20) and a detector (22), for measuring an optical property of the sample of central heating system water isolated within the sample chamber (14) and thereby making a determination as to whether or not the level of the selected chemical in the water is greater than a predetermined threshold level.

Refilling device for a hydronic heating system, having a monolithic housing providing an inlet port, an outlet port, a middle section providing a flow channel for water extending between the inlet port and the outlet port and a connection socket for a softening and/or demineralization cartridge, having an inlet shut-off-valve accommodated within said monolithic housing downstream of said inlet port, having an automatically actuated outlet shut-off-valve accommodated within said monolithic housing upstream of said outlet port, having a system separator with backflow preventers, a conductivity or TDS sensor and a flow meter accommodated within said monolithic housing, and having a controller mounted to said monolithic housing, wherein the controller receives signals from the conductivity or TDS sensor and from the flow meter, wherein the controller processes said signals received from said sensors to automatically control the operation of the refilling device.

An in-line fitment for connection of a filter to a pipe includes first and second fluid-carrying portions and a non-fluid-carrying spacer. Each fluid-carrying portion includes a socket for receiving an open end of a pipe and a connector for connection of the filter. A screw compression fitting is provided on each of the sockets of the first and second fluid-carrying portions for forming a sealed connection with the open ends of the pipe. The socket of the first fluid-carrying portion has a pipe receiving depth greater than that of the socket of the second fluid-carrying portion for enabling movement of the fitment parallel to the pipe when engaged with one of the open ends of the pipe. The sockets of the first and second fluid-carrying portions are positioned on a common axis and facing away from each other when the fluid-carrying portions are linked by the spacer.

A user interface for a thermostat that controls a radiator valve can include a user input member that is movable from a home position to a set point increase or decrease position to increase or decrease a set point temperature of the thermostat. In some embodiments, a return mechanism returns the user input member to the home position after being released from one of the set point increase and decrease positions. The user interface can include an indicator panel and controller that controls the indicator panel to provide an indication of when the set point temperature of the thermostat is being adjusted. The user interface can also include a lockout controller that prevents further set point temperature adjustments using the user interface when the set point temperature differs from the environmental temperature by a specified amount.

The present invention provides an electric boiler having a heating element surrounded by a thermally conductive inner container to define an inner passage about the heating element, the inner container having an inlet 13, 14 and an outlet for a flow of water and is arranged such as to cause water received at the inner container inlet to flow along the inner passage in close proximity to a surface of the heating element, the boiler further comprising an outer container in which the inner container is substantially located, the outer container defining an outer passage about at least part of the inner container, the outer container having an outlet into the inner container wherein the outer container is arranged such as to cause water to flow along the outer passage in close proximity to a surface of the inner container, such that water received in the boiler makes at least a double pass through the boiler to increase the potential heat transfer to the water.

A non-contact actuation assembly configured to operate a communication line of an infrastructure system through a panel having an external face configured to be directed into an interior of a building structure, and an opposite internal face, said assembly comprising; an actuator configured to be positioned adjacent said external face by a user during operation, said actuator comprising an actuating member constituted by at least one of a magnetic member and a magnetizable member; and an operator configured to be disposed adjacent said internal face during operation, and control communication at said communication line, said operator comprising an operating member constituted by a matching one of said magnetic member and said magnetizable member; wherein upon said positioning of said actuator adjacent said external face, in register with said operator, said actuating member and said operating member are configured to be magnetically coupled such that said operator is switchable, upon disposition of said actuator member with respect to said external face, at least between a first state in which communication in said communication line is established and a second state n which communication in said communication line is obstructed.

Provided is an exterior case for a hot water unit which can be produced in a simple operational process with high productivity and with low costs without environmental pollution even if a complex pattern or the like is formed, in which the overall design properties are favorable. There is provided an exterior case used for accommodating a hot water device for hot water production or hot water storage therein, and an ink jet printing layer representing at least one of letters, symbols, figures, and patterns is provided on a paint layer of a metal plate constituting the exterior case.