A hydronic system separator has an air separator with a vent release mechanism to remove air from the fluid within a hydronic system. The separator includes a magnetic assembly for collecting ferrous particles from the fluid. One or more screens are used to remove other particles from the fluid. The separator housing includes a removable debris collection receptacle that has a drain assembly.

A freeze protection system is provided that includes a first valve configured to be coupled with an inlet of a water heater, such as a tankless water heater; a second valve configured to be coupled with an outlet of the water heater; and a valve actuator configured to automatically actuate the first valve and the second valve to permit water to drain from the water heater when (1) electric power is lost to the water heater, and (2) a temperature of a fluid in or around the water heater is less than or equal to a predetermined low temperature threshold.

A process for chemical cleaning and corrosion inhibition of pipework, typically in closed loop systems, that avoids or significantly minimises the requirement for wastewater discharge where the system is first acidified using a mixture of cleaning agents capable of dissolving metal oxides. The method then precipitates any dissolved contaminants and separates the precipitate from the carrying fluid. Further elements of a combined corrosion inhibitor package are then added to any cleaning agent ions that remain in solution to develop a fully functional corrosion inhibition package to protect the metals of the system.

An onboard system for winterizing vessels includes an antifreeze storage system. The onboard system includes a control system capable of determining one or more of the one or more system components to be winterized, an antifreeze storage system, and one or more pumps capable of pumping antifreeze from the antifreeze storage system. The antifreeze flows through the determined one or more system components to be winterized.

A heating body, having multiple heat tubes filled with a working medium and run in parallel, and which have a first end and a second end, and having a heat source, which is thermally coupled to the first and/or second end of the heat tubes. To improve efficiency, reduce heating time, and achieve a homogeneous heat distribution, the first ends of the heat tubes are open and are fluidically connected to a first transverse connection tube and/or the second ends of the heat tubes are open and are fluidically connected to a second transverse connection tube, the heat tubes and the transverse connection tubes form a common cavity filled with the working medium, and the first or second transverse connection tube is thermally coupled to the heat source in order to absorb heat from the heat source.

A chemical-agent dosing apparatus for dosing a heating system with chemical agent. The apparatus comprises a chemical-agent storage chamber which stores a chemical agent and a dosing device which has a dosing chamber and a driving means. The dosing chamber is fluidly connected with the storage chamber and defines a dosing volume for receiving a dose of chemical agent. The driving means drives fluid from the dosing chamber via the dose outlet.

An insulating cover for a central heating system filter is provided in two parts. The insulating cover may be made from, for example, expanded polypropylene foam. The cover may include magnets for attracting and retaining magnetic debris within the filter. The cover may include a leadscrew arrangement to assist with removal of the cover from the filter for servicing.

An insulating cover for a central heating system filter is provided in two parts. The insulating cover may be made from, for example, expanded polypropylene foam. The cover may include magnets for attracting and retaining magnetic debris within the filter. The cover may include a leadscrew arrangement to assist with removal of the cover from the filter for servicing.

A magnetic filter for a central heating system is disclosed, the filter including a separation chamber, a magnet for capturing magnetic particles within the separation chamber, an inlet for fluidly connecting to a central heating system circuit, an outlet for fluidly connecting to a central heating system circuit, and a single valve operable to select between at least two positions, the valve in a first position fluidly connecting the inlet to the separation chamber and fluidly connecting the outlet to the separation chamber and the valve in a second position isolating both the inlet and the outlet from the separation chamber.

A novel method of deicing utilizing a fins-on-tubes type evaporator/heat exchanger system that is optimized for energy-saving inductive heating thereof, by configuring it to increase its resistance to a value at which the system's reactance at its working frequency is comparable to its electrical resistance. The system includes a set of tubes configured for flow of cooling material therethrough, and also includes a set of fins positioned and disposed perpendicular to, and along, the tubes, in such a way that at least a portion of the fins comprises longitudinal excisions therein.