boiler [1]

Device in which water is heated before being distributed to the radiators.

Aquastat

Device regulating the water temperature.

pressure relief valve

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

box

Rigid metal casing for the boiler.

chimney

Channel through which combustion gases are evacuated.

burner

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