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forced hot-water system click to hear : forced hot-water system

Water heated in a boiler flows up to the radiators, where it releases its heat to the ambient air; the water then returns to the boiler to be reheated.
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See forced hot-water system in : french | spanish
main return pipe boiler circulating pump expansion tank main supply pipe branch supply pipe radiator branch return pipe

main return pipe click to hear : main return pipe

Pipe carrying cooled water to the boiler.

boiler click to hear : boiler

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

circulating pump click to hear : circulating pump

Device moving water throughout the network of pipes and radiators.

expansion tank click to hear : expansion tank

Reservoir for absorbing water expansion; it keeps the water pressure in the system steady.

main supply pipe click to hear : main supply pipe

Pipe carrying the hot water to the radiators.

branch supply pipe click to hear : branch supply pipe

Pipe carrying the hot water to the radiators one floor above.

radiator click to hear : radiator

Device transferring heat obtained from the passage of hot water to the ambient air.

branch return pipe click to hear : branch return pipe

Pipe carrying the cooled water to the main return pipe one floor below.