Transcription: Warung wasse Heitsung mit zwanks umlauf, vorlauf, stieglaetung ruglauf, stieglaetung vorlauf, ruglauf, kessel, aus denungsgefess, umweltzpumpe, heitskerper, forced hot water system, main supply pipe, branch return pipe, branch supply pipe, main return pipe, boiler, expansion tank, circulating pump, radiator, Installation at the house. Canalization of the cement, colon, descendant, colon, descendant. Canalization of the house. Show the air. Vase of expansion, pump of circulation, radiator.
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