Jargon Buster - R
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Transfers the heat from the water in the central heating system to the rooms.
A decorative or protective surround for a radiator.
Used to control and isolate the water flow and return on a radiator.
An electrical component, often found on the 'PCB' used to switch secondary equipment such as water pumps, gas valves, and flue fans.
Controls the temperature by means of simple on-off switching of the boiler (or the pump, if the boiler has to run constantly in order to provide hot water).
A common term for corrosion of iron and its alloys, such as steel, formed by the reaction of the metal with oxygen in the presence of water.