boiler [2]

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.

heat exchanger

Set of pipes transferring the heat produced by combustion to the water.

heating element

Conduit in which the water is heated.

air tube

Cylindrical part covering the nozzle and the ignition electrodes; it joins the burner to the fire pot.

fire pot

Part of the boiler where the combustion of air and heating oil takes place after they pass through the burner.

draft hole

Peephole for viewing the inside of the fire pot.

insulation

Material covering the sides of the boiler to reduce heat loss.