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boiler [1]click to hear

Device in which water is heated before being distributed to the radiators.
boiler [1] Aquastat pressure relief valve box chimney burner

Aquastat click to hear

Device regulating the water temperature.

pressure relief valve click to hear

Mechanism for releasing pressure by letting off excess water or steam.

box click to hear

Rigid metal casing for the boiler.

chimney click to hear

Channel through which combustion gases are evacuated.

burner click to hear

Device for mixing a flammable substance with air, and fanning and igniting this mixture in a boiler’s fire pot.